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authorLinus Torvalds <torvalds@linux-foundation.org>2009-09-18 12:45:08 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2009-09-18 12:45:08 -0400
commit81ce31b773226332475f89501b1072bec0c0e241 (patch)
treecd66f3c1caf731cc552ae90af2068aecabaed334 /arch
parent515b696b282f856c3ad1679ccd658120faa387d0 (diff)
parent9973affe9bbcde64041890d8793eb2e74143c298 (diff)
Merge branch 'for-linus' of git://gitserver.sunplusct.com/linux-2.6-score
* 'for-linus' of git://gitserver.sunplusct.com/linux-2.6-score: (22 commits) score: add TIF_NOTIFY_RESUME define in asm/thread_info.h score: make init_thread_union align to THREAD_SIZE score: update files according to review comments. score: add old syscall support score: add MEMORY_START and MEMORY_SIZE define, to make the code clear score: update inconsistent declare after .c was changed score: remove unused code, add include files in .c score: clean up mm/init.c score: make irq.h definitions local score: cleanups: dead code, 0 as pointer, shadowed variables score: fix function prototypes score: add address space annotations score: add missing #includes score: move save arg5 and arg6 instruction in front of enable_irq score: add prototypes for wrapped syscalls score: remove init_mm score: add generic sys_call_table score: remove __{put,get}_user_unknown score: unset __ARCH_WANT_IPC_PARSE_VERSION score: update files according to review comments ...
Diffstat (limited to 'arch')
-rw-r--r--arch/score/Kconfig141
-rw-r--r--arch/score/Kconfig.debug37
-rw-r--r--arch/score/Makefile43
-rw-r--r--arch/score/boot/Makefile15
-rw-r--r--arch/score/configs/spct6600_defconfig717
-rw-r--r--arch/score/include/asm/Kbuild3
-rw-r--r--arch/score/include/asm/asmmacro.h161
-rw-r--r--arch/score/include/asm/atomic.h6
-rw-r--r--arch/score/include/asm/auxvec.h4
-rw-r--r--arch/score/include/asm/bitops.h16
-rw-r--r--arch/score/include/asm/bitsperlong.h6
-rw-r--r--arch/score/include/asm/bug.h6
-rw-r--r--arch/score/include/asm/bugs.h6
-rw-r--r--arch/score/include/asm/byteorder.h6
-rw-r--r--arch/score/include/asm/cache.h7
-rw-r--r--arch/score/include/asm/cacheflush.h45
-rw-r--r--arch/score/include/asm/checksum.h235
-rw-r--r--arch/score/include/asm/cputime.h6
-rw-r--r--arch/score/include/asm/current.h6
-rw-r--r--arch/score/include/asm/delay.h26
-rw-r--r--arch/score/include/asm/device.h6
-rw-r--r--arch/score/include/asm/div64.h6
-rw-r--r--arch/score/include/asm/dma-mapping.h6
-rw-r--r--arch/score/include/asm/dma.h8
-rw-r--r--arch/score/include/asm/elf.h103
-rw-r--r--arch/score/include/asm/emergency-restart.h6
-rw-r--r--arch/score/include/asm/errno.h6
-rw-r--r--arch/score/include/asm/fcntl.h6
-rw-r--r--arch/score/include/asm/fixmap.h82
-rw-r--r--arch/score/include/asm/ftrace.h4
-rw-r--r--arch/score/include/asm/futex.h6
-rw-r--r--arch/score/include/asm/hardirq.h6
-rw-r--r--arch/score/include/asm/hw_irq.h4
-rw-r--r--arch/score/include/asm/io.h9
-rw-r--r--arch/score/include/asm/ioctl.h6
-rw-r--r--arch/score/include/asm/ioctls.h6
-rw-r--r--arch/score/include/asm/ipcbuf.h6
-rw-r--r--arch/score/include/asm/irq.h25
-rw-r--r--arch/score/include/asm/irq_regs.h11
-rw-r--r--arch/score/include/asm/irqflags.h109
-rw-r--r--arch/score/include/asm/kdebug.h6
-rw-r--r--arch/score/include/asm/kmap_types.h6
-rw-r--r--arch/score/include/asm/linkage.h7
-rw-r--r--arch/score/include/asm/local.h6
-rw-r--r--arch/score/include/asm/mman.h6
-rw-r--r--arch/score/include/asm/mmu.h6
-rw-r--r--arch/score/include/asm/mmu_context.h113
-rw-r--r--arch/score/include/asm/module.h39
-rw-r--r--arch/score/include/asm/msgbuf.h6
-rw-r--r--arch/score/include/asm/mutex.h6
-rw-r--r--arch/score/include/asm/page.h92
-rw-r--r--arch/score/include/asm/param.h6
-rw-r--r--arch/score/include/asm/pci.h4
-rw-r--r--arch/score/include/asm/percpu.h6
-rw-r--r--arch/score/include/asm/pgalloc.h83
-rw-r--r--arch/score/include/asm/pgtable-bits.h25
-rw-r--r--arch/score/include/asm/pgtable.h287
-rw-r--r--arch/score/include/asm/poll.h6
-rw-r--r--arch/score/include/asm/posix_types.h6
-rw-r--r--arch/score/include/asm/processor.h106
-rw-r--r--arch/score/include/asm/ptrace.h97
-rw-r--r--arch/score/include/asm/resource.h6
-rw-r--r--arch/score/include/asm/scatterlist.h6
-rw-r--r--arch/score/include/asm/scoreregs.h51
-rw-r--r--arch/score/include/asm/sections.h6
-rw-r--r--arch/score/include/asm/segment.h21
-rw-r--r--arch/score/include/asm/sembuf.h6
-rw-r--r--arch/score/include/asm/setup.h41
-rw-r--r--arch/score/include/asm/shmbuf.h6
-rw-r--r--arch/score/include/asm/shmparam.h6
-rw-r--r--arch/score/include/asm/sigcontext.h22
-rw-r--r--arch/score/include/asm/siginfo.h6
-rw-r--r--arch/score/include/asm/signal.h6
-rw-r--r--arch/score/include/asm/socket.h6
-rw-r--r--arch/score/include/asm/sockios.h6
-rw-r--r--arch/score/include/asm/stat.h6
-rw-r--r--arch/score/include/asm/statfs.h6
-rw-r--r--arch/score/include/asm/string.h8
-rw-r--r--arch/score/include/asm/swab.h6
-rw-r--r--arch/score/include/asm/syscalls.h11
-rw-r--r--arch/score/include/asm/system.h90
-rw-r--r--arch/score/include/asm/termbits.h6
-rw-r--r--arch/score/include/asm/termios.h6
-rw-r--r--arch/score/include/asm/thread_info.h105
-rw-r--r--arch/score/include/asm/timex.h8
-rw-r--r--arch/score/include/asm/tlb.h17
-rw-r--r--arch/score/include/asm/tlbflush.h142
-rw-r--r--arch/score/include/asm/topology.h6
-rw-r--r--arch/score/include/asm/types.h6
-rw-r--r--arch/score/include/asm/uaccess.h424
-rw-r--r--arch/score/include/asm/ucontext.h1
-rw-r--r--arch/score/include/asm/unaligned.h6
-rw-r--r--arch/score/include/asm/unistd.h13
-rw-r--r--arch/score/include/asm/user.h21
-rw-r--r--arch/score/kernel/Makefile11
-rw-r--r--arch/score/kernel/asm-offsets.c216
-rw-r--r--arch/score/kernel/entry.S514
-rw-r--r--arch/score/kernel/head.S70
-rw-r--r--arch/score/kernel/init_task.c47
-rw-r--r--arch/score/kernel/irq.c148
-rw-r--r--arch/score/kernel/module.c165
-rw-r--r--arch/score/kernel/process.c168
-rw-r--r--arch/score/kernel/ptrace.c382
-rw-r--r--arch/score/kernel/setup.c159
-rw-r--r--arch/score/kernel/signal.c361
-rw-r--r--arch/score/kernel/sys_call_table.c12
-rw-r--r--arch/score/kernel/sys_score.c151
-rw-r--r--arch/score/kernel/time.c99
-rw-r--r--arch/score/kernel/traps.c349
-rw-r--r--arch/score/kernel/vmlinux.lds.S148
-rw-r--r--arch/score/lib/Makefile8
-rw-r--r--arch/score/lib/ashldi3.c46
-rw-r--r--arch/score/lib/ashrdi3.c48
-rw-r--r--arch/score/lib/checksum.S255
-rw-r--r--arch/score/lib/checksum_copy.c52
-rw-r--r--arch/score/lib/cmpdi2.c44
-rw-r--r--arch/score/lib/libgcc.h37
-rw-r--r--arch/score/lib/lshrdi3.c47
-rw-r--r--arch/score/lib/string.S184
-rw-r--r--arch/score/lib/ucmpdi2.c38
-rw-r--r--arch/score/mm/Makefile6
-rw-r--r--arch/score/mm/cache.c257
-rw-r--r--arch/score/mm/extable.c38
-rw-r--r--arch/score/mm/fault.c235
-rw-r--r--arch/score/mm/init.c161
-rw-r--r--arch/score/mm/pgtable.c52
-rw-r--r--arch/score/mm/tlb-miss.S199
-rw-r--r--arch/score/mm/tlb-score.c251
128 files changed, 8873 insertions, 0 deletions
diff --git a/arch/score/Kconfig b/arch/score/Kconfig
new file mode 100644
index 000000000000..55d413e6dcf2
--- /dev/null
+++ b/arch/score/Kconfig
@@ -0,0 +1,141 @@
1# For a description of the syntax of this configuration file,
2# see Documentation/kbuild/kconfig-language.txt.
3
4mainmenu "Linux/SCORE Kernel Configuration"
5
6menu "Machine selection"
7
8choice
9 prompt "System type"
10 default MACH_SPCT6600
11
12config ARCH_SCORE7
13 bool "SCORE7 processor"
14 select SYS_SUPPORTS_32BIT_KERNEL
15 select CPU_SCORE7
16 select GENERIC_HAS_IOMAP
17
18config MACH_SPCT6600
19 bool "SPCT6600 series based machines"
20 select SYS_SUPPORTS_32BIT_KERNEL
21 select CPU_SCORE7
22 select GENERIC_HAS_IOMAP
23
24config SCORE_SIM
25 bool "Score simulator"
26 select SYS_SUPPORTS_32BIT_KERNEL
27 select CPU_SCORE7
28 select GENERIC_HAS_IOMAP
29endchoice
30
31endmenu
32
33config CPU_SCORE7
34 bool
35
36config GENERIC_IOMAP
37 def_bool y
38
39config NO_DMA
40 bool
41 default y
42
43config RWSEM_GENERIC_SPINLOCK
44 def_bool y
45
46config GENERIC_FIND_NEXT_BIT
47 def_bool y
48
49config GENERIC_HWEIGHT
50 def_bool y
51
52config GENERIC_CALIBRATE_DELAY
53 def_bool y
54
55config GENERIC_CLOCKEVENTS
56 def_bool y
57
58config GENERIC_TIME
59 def_bool y
60
61config SCHED_NO_NO_OMIT_FRAME_POINTER
62 def_bool y
63
64config GENERIC_HARDIRQS_NO__DO_IRQ
65 def_bool y
66
67config GENERIC_SYSCALL_TABLE
68 def_bool y
69
70config SCORE_L1_CACHE_SHIFT
71 int
72 default "4"
73
74menu "Kernel type"
75
76config 32BIT
77 def_bool y
78
79config GENERIC_HARDIRQS
80 def_bool y
81
82config ARCH_FLATMEM_ENABLE
83 def_bool y
84
85config ARCH_POPULATES_NODE_MAP
86 def_bool y
87
88source "mm/Kconfig"
89
90config MEMORY_START
91 hex
92 default 0xa0000000
93
94source "kernel/time/Kconfig"
95source "kernel/Kconfig.hz"
96source "kernel/Kconfig.preempt"
97
98endmenu
99
100config RWSEM_GENERIC_SPINLOCK
101 def_bool y
102
103config LOCKDEP_SUPPORT
104 def_bool y
105
106config STACKTRACE_SUPPORT
107 def_bool y
108
109source "init/Kconfig"
110
111config PROBE_INITRD_HEADER
112 bool "Probe initrd header created by addinitrd"
113 depends on BLK_DEV_INITRD
114 help
115 Probe initrd header at the last page of kernel image.
116 Say Y here if you are using arch/score/boot/addinitrd.c to
117 add initrd or initramfs image to the kernel image.
118 Otherwise, say N.
119
120config MMU
121 def_bool y
122
123menu "Executable file formats"
124
125source "fs/Kconfig.binfmt"
126
127endmenu
128
129source "net/Kconfig"
130
131source "drivers/Kconfig"
132
133source "fs/Kconfig"
134
135source "arch/score/Kconfig.debug"
136
137source "security/Kconfig"
138
139source "crypto/Kconfig"
140
141source "lib/Kconfig"
diff --git a/arch/score/Kconfig.debug b/arch/score/Kconfig.debug
new file mode 100644
index 000000000000..451ed54ce646
--- /dev/null
+++ b/arch/score/Kconfig.debug
@@ -0,0 +1,37 @@
1menu "Kernel hacking"
2
3config TRACE_IRQFLAGS_SUPPORT
4 bool
5 default y
6
7source "lib/Kconfig.debug"
8
9config CMDLINE
10 string "Default kernel command string"
11 default ""
12 help
13 On some platforms, there is currently no way for the boot loader to
14 pass arguments to the kernel. For these platforms, you can supply
15 some command-line options at build time by entering them here. In
16 other cases you can specify kernel args so that you don't have
17 to set them up in board prom initialization routines.
18
19config DEBUG_STACK_USAGE
20 bool "Enable stack utilization instrumentation"
21 depends on DEBUG_KERNEL
22 help
23 Enables the display of the minimum amount of free stack which each
24 task has ever had available in the sysrq-T and sysrq-P debug output.
25
26 This option will slow down process creation somewhat.
27
28config RUNTIME_DEBUG
29 bool "Enable run-time debugging"
30 depends on DEBUG_KERNEL
31 help
32 If you say Y here, some debugging macros will do run-time checking.
33 If you say N here, those macros will mostly turn to no-ops. See
34 include/asm-score/debug.h for debuging macros.
35 If unsure, say N.
36
37endmenu
diff --git a/arch/score/Makefile b/arch/score/Makefile
new file mode 100644
index 000000000000..68e0cd06d5c9
--- /dev/null
+++ b/arch/score/Makefile
@@ -0,0 +1,43 @@
1#
2# arch/score/Makefile
3#
4# This file is subject to the terms and conditions of the GNU General Public
5# License. See the file "COPYING" in the main directory of this archive
6# for more details.
7#
8
9KBUILD_DEFCONFIG := spct6600_defconfig
10CROSS_COMPILE := score-linux-
11
12#
13# CPU-dependent compiler/assembler options for optimization.
14#
15cflags-y += -G0 -pipe -mel -mnhwloop -D__SCOREEL__ \
16 -D__linux__ -ffunction-sections -ffreestanding
17
18#
19# Board-dependent options and extra files
20#
21KBUILD_AFLAGS += $(cflags-y)
22KBUILD_CFLAGS += $(cflags-y)
23MODFLAGS += -mlong-calls
24LDFLAGS += --oformat elf32-littlescore
25LDFLAGS_vmlinux += -G0 -static -nostdlib
26
27head-y := arch/score/kernel/head.o
28libs-y += arch/score/lib/
29core-y += arch/score/kernel/ arch/score/mm/
30
31boot := arch/score/boot
32
33vmlinux.bin: vmlinux
34 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
35
36archclean:
37 @$(MAKE) $(clean)=$(boot)
38
39define archhelp
40 echo ' vmlinux.bin - Raw binary boot image'
41 echo
42 echo ' These will be default as apropriate for a configured platform.'
43endef
diff --git a/arch/score/boot/Makefile b/arch/score/boot/Makefile
new file mode 100644
index 000000000000..0c5fbd0fb696
--- /dev/null
+++ b/arch/score/boot/Makefile
@@ -0,0 +1,15 @@
1#
2# arch/score/boot/Makefile
3#
4# This file is subject to the terms and conditions of the GNU General Public
5# License. See the file "COPYING" in the main directory of this archive
6# for more details.
7#
8
9targets := vmlinux.bin
10
11$(obj)/vmlinux.bin: vmlinux FORCE
12 $(call if_changed,objcopy)
13 @echo 'Kernel: $@ is ready' ' (#'`cat .version`')'
14
15clean-files += vmlinux.bin
diff --git a/arch/score/configs/spct6600_defconfig b/arch/score/configs/spct6600_defconfig
new file mode 100644
index 000000000000..e064943b13d4
--- /dev/null
+++ b/arch/score/configs/spct6600_defconfig
@@ -0,0 +1,717 @@
1#
2# Automatically generated make config: don't edit
3# Linux kernel version: 2.6.30-rc5
4# Fri Jun 12 18:57:07 2009
5#
6
7#
8# Machine selection
9#
10# CONFIG_ARCH_SCORE7 is not set
11CONFIG_MACH_SPCT6600=y
12# CONFIG_SCORE_SIM is not set
13CONFIG_CPU_SCORE7=y
14CONFIG_GENERIC_IOMAP=y
15CONFIG_NO_DMA=y
16CONFIG_RWSEM_GENERIC_SPINLOCK=y
17CONFIG_GENERIC_FIND_NEXT_BIT=y
18CONFIG_GENERIC_HWEIGHT=y
19CONFIG_GENERIC_CALIBRATE_DELAY=y
20CONFIG_GENERIC_CLOCKEVENTS=y
21CONFIG_GENERIC_TIME=y
22CONFIG_SCHED_NO_NO_OMIT_FRAME_POINTER=y
23CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ=y
24CONFIG_GENERIC_SYSCALL_TABLE=y
25CONFIG_SCORE_L1_CACHE_SHIFT=4
26
27#
28# Kernel type
29#
30CONFIG_32BIT=y
31CONFIG_GENERIC_HARDIRQS=y
32CONFIG_ARCH_FLATMEM_ENABLE=y
33CONFIG_ARCH_POPULATES_NODE_MAP=y
34CONFIG_SELECT_MEMORY_MODEL=y
35CONFIG_FLATMEM_MANUAL=y
36# CONFIG_DISCONTIGMEM_MANUAL is not set
37# CONFIG_SPARSEMEM_MANUAL is not set
38CONFIG_FLATMEM=y
39CONFIG_FLAT_NODE_MEM_MAP=y
40CONFIG_PAGEFLAGS_EXTENDED=y
41CONFIG_SPLIT_PTLOCK_CPUS=4
42# CONFIG_PHYS_ADDR_T_64BIT is not set
43CONFIG_ZONE_DMA_FLAG=0
44CONFIG_VIRT_TO_BUS=y
45CONFIG_UNEVICTABLE_LRU=y
46CONFIG_HAVE_MLOCK=y
47CONFIG_HAVE_MLOCKED_PAGE_BIT=y
48CONFIG_MEMORY_START=0xa0000000
49# CONFIG_NO_HZ is not set
50# CONFIG_HIGH_RES_TIMERS is not set
51CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
52CONFIG_HZ_100=y
53# CONFIG_HZ_250 is not set
54# CONFIG_HZ_300 is not set
55# CONFIG_HZ_1000 is not set
56CONFIG_HZ=100
57# CONFIG_SCHED_HRTICK is not set
58# CONFIG_PREEMPT_NONE is not set
59CONFIG_PREEMPT_VOLUNTARY=y
60# CONFIG_PREEMPT is not set
61CONFIG_LOCKDEP_SUPPORT=y
62CONFIG_STACKTRACE_SUPPORT=y
63CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
64
65#
66# General setup
67#
68CONFIG_EXPERIMENTAL=y
69CONFIG_BROKEN_ON_SMP=y
70CONFIG_INIT_ENV_ARG_LIMIT=32
71CONFIG_LOCALVERSION=""
72# CONFIG_LOCALVERSION_AUTO is not set
73CONFIG_SWAP=y
74CONFIG_SYSVIPC=y
75CONFIG_SYSVIPC_SYSCTL=y
76CONFIG_POSIX_MQUEUE=y
77CONFIG_POSIX_MQUEUE_SYSCTL=y
78CONFIG_BSD_PROCESS_ACCT=y
79# CONFIG_BSD_PROCESS_ACCT_V3 is not set
80# CONFIG_TASKSTATS is not set
81# CONFIG_AUDIT is not set
82
83#
84# RCU Subsystem
85#
86CONFIG_CLASSIC_RCU=y
87# CONFIG_TREE_RCU is not set
88# CONFIG_PREEMPT_RCU is not set
89# CONFIG_TREE_RCU_TRACE is not set
90# CONFIG_PREEMPT_RCU_TRACE is not set
91# CONFIG_IKCONFIG is not set
92CONFIG_LOG_BUF_SHIFT=12
93# CONFIG_GROUP_SCHED is not set
94# CONFIG_CGROUPS is not set
95CONFIG_SYSFS_DEPRECATED=y
96CONFIG_SYSFS_DEPRECATED_V2=y
97# CONFIG_RELAY is not set
98# CONFIG_NAMESPACES is not set
99CONFIG_BLK_DEV_INITRD=y
100CONFIG_INITRAMFS_SOURCE=""
101CONFIG_RD_GZIP=y
102# CONFIG_RD_BZIP2 is not set
103# CONFIG_RD_LZMA is not set
104# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
105CONFIG_SYSCTL=y
106CONFIG_ANON_INODES=y
107CONFIG_EMBEDDED=y
108CONFIG_SYSCTL_SYSCALL=y
109# CONFIG_KALLSYMS is not set
110# CONFIG_STRIP_ASM_SYMS is not set
111# CONFIG_HOTPLUG is not set
112CONFIG_PRINTK=y
113CONFIG_BUG=y
114CONFIG_ELF_CORE=y
115CONFIG_BASE_FULL=y
116CONFIG_FUTEX=y
117CONFIG_EPOLL=y
118CONFIG_SIGNALFD=y
119CONFIG_TIMERFD=y
120CONFIG_EVENTFD=y
121CONFIG_SHMEM=y
122CONFIG_AIO=y
123CONFIG_VM_EVENT_COUNTERS=y
124CONFIG_COMPAT_BRK=y
125CONFIG_SLAB=y
126# CONFIG_SLUB is not set
127# CONFIG_SLOB is not set
128# CONFIG_PROFILING is not set
129# CONFIG_MARKERS is not set
130# CONFIG_SLOW_WORK is not set
131# CONFIG_HAVE_GENERIC_DMA_COHERENT is not set
132CONFIG_SLABINFO=y
133CONFIG_RT_MUTEXES=y
134CONFIG_BASE_SMALL=0
135CONFIG_MODULES=y
136CONFIG_MODULE_FORCE_LOAD=y
137CONFIG_MODULE_UNLOAD=y
138CONFIG_MODULE_FORCE_UNLOAD=y
139# CONFIG_MODVERSIONS is not set
140# CONFIG_MODULE_SRCVERSION_ALL is not set
141CONFIG_BLOCK=y
142CONFIG_LBD=y
143# CONFIG_BLK_DEV_BSG is not set
144# CONFIG_BLK_DEV_INTEGRITY is not set
145
146#
147# IO Schedulers
148#
149CONFIG_IOSCHED_NOOP=y
150CONFIG_IOSCHED_AS=y
151CONFIG_IOSCHED_DEADLINE=y
152CONFIG_IOSCHED_CFQ=y
153# CONFIG_DEFAULT_AS is not set
154# CONFIG_DEFAULT_DEADLINE is not set
155CONFIG_DEFAULT_CFQ=y
156# CONFIG_DEFAULT_NOOP is not set
157CONFIG_DEFAULT_IOSCHED="cfq"
158# CONFIG_PROBE_INITRD_HEADER is not set
159CONFIG_MMU=y
160
161#
162# Executable file formats
163#
164CONFIG_BINFMT_ELF=y
165# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
166# CONFIG_HAVE_AOUT is not set
167CONFIG_BINFMT_MISC=y
168CONFIG_NET=y
169
170#
171# Networking options
172#
173# CONFIG_PACKET is not set
174CONFIG_UNIX=y
175CONFIG_XFRM=y
176# CONFIG_XFRM_USER is not set
177# CONFIG_XFRM_SUB_POLICY is not set
178# CONFIG_XFRM_MIGRATE is not set
179# CONFIG_XFRM_STATISTICS is not set
180CONFIG_NET_KEY=y
181# CONFIG_NET_KEY_MIGRATE is not set
182CONFIG_INET=y
183CONFIG_IP_MULTICAST=y
184# CONFIG_IP_ADVANCED_ROUTER is not set
185CONFIG_IP_FIB_HASH=y
186# CONFIG_IP_PNP is not set
187# CONFIG_NET_IPIP is not set
188# CONFIG_NET_IPGRE is not set
189# CONFIG_IP_MROUTE is not set
190CONFIG_ARPD=y
191# CONFIG_SYN_COOKIES is not set
192# CONFIG_INET_AH is not set
193# CONFIG_INET_ESP is not set
194# CONFIG_INET_IPCOMP is not set
195# CONFIG_INET_XFRM_TUNNEL is not set
196# CONFIG_INET_TUNNEL is not set
197CONFIG_INET_XFRM_MODE_TRANSPORT=y
198CONFIG_INET_XFRM_MODE_TUNNEL=y
199CONFIG_INET_XFRM_MODE_BEET=y
200# CONFIG_INET_LRO is not set
201CONFIG_INET_DIAG=y
202CONFIG_INET_TCP_DIAG=y
203# CONFIG_TCP_CONG_ADVANCED is not set
204CONFIG_TCP_CONG_CUBIC=y
205CONFIG_DEFAULT_TCP_CONG="cubic"
206# CONFIG_TCP_MD5SIG is not set
207# CONFIG_IPV6 is not set
208# CONFIG_NETLABEL is not set
209# CONFIG_NETWORK_SECMARK is not set
210# CONFIG_NETFILTER is not set
211# CONFIG_IP_DCCP is not set
212# CONFIG_IP_SCTP is not set
213# CONFIG_TIPC is not set
214# CONFIG_ATM is not set
215# CONFIG_BRIDGE is not set
216# CONFIG_NET_DSA is not set
217# CONFIG_VLAN_8021Q is not set
218# CONFIG_DECNET is not set
219# CONFIG_LLC2 is not set
220# CONFIG_IPX is not set
221# CONFIG_ATALK is not set
222# CONFIG_X25 is not set
223# CONFIG_LAPB is not set
224# CONFIG_ECONET is not set
225# CONFIG_WAN_ROUTER is not set
226# CONFIG_PHONET is not set
227# CONFIG_NET_SCHED is not set
228# CONFIG_DCB is not set
229
230#
231# Network testing
232#
233# CONFIG_NET_PKTGEN is not set
234# CONFIG_HAMRADIO is not set
235# CONFIG_CAN is not set
236# CONFIG_IRDA is not set
237# CONFIG_BT is not set
238# CONFIG_AF_RXRPC is not set
239# CONFIG_WIRELESS is not set
240# CONFIG_WIMAX is not set
241# CONFIG_RFKILL is not set
242# CONFIG_NET_9P is not set
243
244#
245# Device Drivers
246#
247
248#
249# Generic Driver Options
250#
251# CONFIG_STANDALONE is not set
252# CONFIG_PREVENT_FIRMWARE_BUILD is not set
253# CONFIG_SYS_HYPERVISOR is not set
254# CONFIG_CONNECTOR is not set
255# CONFIG_MTD is not set
256# CONFIG_PARPORT is not set
257CONFIG_BLK_DEV=y
258# CONFIG_BLK_DEV_COW_COMMON is not set
259CONFIG_BLK_DEV_LOOP=y
260CONFIG_BLK_DEV_CRYPTOLOOP=y
261# CONFIG_BLK_DEV_NBD is not set
262CONFIG_BLK_DEV_RAM=y
263CONFIG_BLK_DEV_RAM_COUNT=1
264CONFIG_BLK_DEV_RAM_SIZE=4096
265# CONFIG_BLK_DEV_XIP is not set
266# CONFIG_CDROM_PKTCDVD is not set
267# CONFIG_ATA_OVER_ETH is not set
268# CONFIG_MISC_DEVICES is not set
269
270#
271# SCSI device support
272#
273# CONFIG_RAID_ATTRS is not set
274# CONFIG_SCSI is not set
275# CONFIG_SCSI_DMA is not set
276# CONFIG_SCSI_NETLINK is not set
277# CONFIG_MD is not set
278CONFIG_NETDEVICES=y
279CONFIG_COMPAT_NET_DEV_OPS=y
280# CONFIG_DUMMY is not set
281# CONFIG_BONDING is not set
282# CONFIG_MACVLAN is not set
283# CONFIG_EQUALIZER is not set
284# CONFIG_TUN is not set
285# CONFIG_VETH is not set
286# CONFIG_NET_ETHERNET is not set
287# CONFIG_NETDEV_1000 is not set
288# CONFIG_NETDEV_10000 is not set
289
290#
291# Wireless LAN
292#
293# CONFIG_WLAN_PRE80211 is not set
294# CONFIG_WLAN_80211 is not set
295
296#
297# Enable WiMAX (Networking options) to see the WiMAX drivers
298#
299# CONFIG_WAN is not set
300# CONFIG_PPP is not set
301# CONFIG_SLIP is not set
302# CONFIG_NETCONSOLE is not set
303# CONFIG_NETPOLL is not set
304# CONFIG_NET_POLL_CONTROLLER is not set
305# CONFIG_ISDN is not set
306# CONFIG_PHONE is not set
307
308#
309# Input device support
310#
311CONFIG_INPUT=y
312# CONFIG_INPUT_FF_MEMLESS is not set
313# CONFIG_INPUT_POLLDEV is not set
314
315#
316# Userland interfaces
317#
318# CONFIG_INPUT_MOUSEDEV is not set
319# CONFIG_INPUT_JOYDEV is not set
320# CONFIG_INPUT_EVDEV is not set
321# CONFIG_INPUT_EVBUG is not set
322
323#
324# Input Device Drivers
325#
326# CONFIG_INPUT_KEYBOARD is not set
327# CONFIG_INPUT_MOUSE is not set
328# CONFIG_INPUT_JOYSTICK is not set
329# CONFIG_INPUT_TABLET is not set
330# CONFIG_INPUT_TOUCHSCREEN is not set
331# CONFIG_INPUT_MISC is not set
332
333#
334# Hardware I/O ports
335#
336# CONFIG_SERIO is not set
337# CONFIG_GAMEPORT is not set
338
339#
340# Character devices
341#
342CONFIG_VT=y
343CONFIG_CONSOLE_TRANSLATIONS=y
344CONFIG_VT_CONSOLE=y
345CONFIG_HW_CONSOLE=y
346# CONFIG_VT_HW_CONSOLE_BINDING is not set
347CONFIG_DEVKMEM=y
348CONFIG_SERIAL_NONSTANDARD=y
349# CONFIG_N_HDLC is not set
350# CONFIG_RISCOM8 is not set
351# CONFIG_SPECIALIX is not set
352# CONFIG_RIO is not set
353CONFIG_STALDRV=y
354
355#
356# Serial drivers
357#
358# CONFIG_SERIAL_8250 is not set
359
360#
361# Non-8250 serial port support
362#
363CONFIG_UNIX98_PTYS=y
364# CONFIG_DEVPTS_MULTIPLE_INSTANCES is not set
365CONFIG_LEGACY_PTYS=y
366CONFIG_LEGACY_PTY_COUNT=256
367# CONFIG_IPMI_HANDLER is not set
368# CONFIG_HW_RANDOM is not set
369# CONFIG_RTC is not set
370# CONFIG_GEN_RTC is not set
371# CONFIG_R3964 is not set
372CONFIG_RAW_DRIVER=y
373CONFIG_MAX_RAW_DEVS=8192
374# CONFIG_TCG_TPM is not set
375# CONFIG_I2C is not set
376# CONFIG_SPI is not set
377# CONFIG_W1 is not set
378# CONFIG_POWER_SUPPLY is not set
379# CONFIG_HWMON is not set
380# CONFIG_THERMAL is not set
381# CONFIG_THERMAL_HWMON is not set
382# CONFIG_WATCHDOG is not set
383
384#
385# Multifunction device drivers
386#
387# CONFIG_MFD_CORE is not set
388# CONFIG_MFD_SM501 is not set
389# CONFIG_HTC_PASIC3 is not set
390# CONFIG_MFD_TMIO is not set
391# CONFIG_REGULATOR is not set
392
393#
394# Multimedia devices
395#
396
397#
398# Multimedia core support
399#
400# CONFIG_VIDEO_DEV is not set
401# CONFIG_DVB_CORE is not set
402# CONFIG_VIDEO_MEDIA is not set
403
404#
405# Multimedia drivers
406#
407# CONFIG_DAB is not set
408
409#
410# Graphics support
411#
412# CONFIG_VGASTATE is not set
413# CONFIG_VIDEO_OUTPUT_CONTROL is not set
414# CONFIG_FB is not set
415# CONFIG_BACKLIGHT_LCD_SUPPORT is not set
416
417#
418# Display device support
419#
420# CONFIG_DISPLAY_SUPPORT is not set
421
422#
423# Console display driver support
424#
425# CONFIG_VGA_CONSOLE is not set
426CONFIG_DUMMY_CONSOLE=y
427# CONFIG_SOUND is not set
428# CONFIG_HID_SUPPORT is not set
429# CONFIG_USB_SUPPORT is not set
430# CONFIG_MMC is not set
431# CONFIG_MEMSTICK is not set
432# CONFIG_NEW_LEDS is not set
433# CONFIG_ACCESSIBILITY is not set
434# CONFIG_RTC_CLASS is not set
435# CONFIG_AUXDISPLAY is not set
436# CONFIG_UIO is not set
437# CONFIG_STAGING is not set
438
439#
440# File systems
441#
442CONFIG_EXT2_FS=y
443CONFIG_EXT2_FS_XATTR=y
444CONFIG_EXT2_FS_POSIX_ACL=y
445# CONFIG_EXT2_FS_SECURITY is not set
446# CONFIG_EXT2_FS_XIP is not set
447CONFIG_EXT3_FS=y
448# CONFIG_EXT3_DEFAULTS_TO_ORDERED is not set
449CONFIG_EXT3_FS_XATTR=y
450CONFIG_EXT3_FS_POSIX_ACL=y
451# CONFIG_EXT3_FS_SECURITY is not set
452# CONFIG_EXT4_FS is not set
453CONFIG_JBD=y
454CONFIG_FS_MBCACHE=y
455# CONFIG_REISERFS_FS is not set
456# CONFIG_JFS_FS is not set
457CONFIG_FS_POSIX_ACL=y
458CONFIG_FILE_LOCKING=y
459# CONFIG_XFS_FS is not set
460# CONFIG_GFS2_FS is not set
461# CONFIG_OCFS2_FS is not set
462# CONFIG_BTRFS_FS is not set
463CONFIG_DNOTIFY=y
464CONFIG_INOTIFY=y
465CONFIG_INOTIFY_USER=y
466# CONFIG_QUOTA is not set
467CONFIG_AUTOFS_FS=y
468CONFIG_AUTOFS4_FS=y
469# CONFIG_FUSE_FS is not set
470CONFIG_GENERIC_ACL=y
471
472#
473# Caches
474#
475# CONFIG_FSCACHE is not set
476
477#
478# CD-ROM/DVD Filesystems
479#
480# CONFIG_ISO9660_FS is not set
481# CONFIG_UDF_FS is not set
482
483#
484# DOS/FAT/NT Filesystems
485#
486# CONFIG_MSDOS_FS is not set
487# CONFIG_VFAT_FS is not set
488# CONFIG_NTFS_FS is not set
489
490#
491# Pseudo filesystems
492#
493CONFIG_PROC_FS=y
494CONFIG_PROC_KCORE=y
495CONFIG_PROC_SYSCTL=y
496# CONFIG_PROC_PAGE_MONITOR is not set
497CONFIG_SYSFS=y
498CONFIG_TMPFS=y
499CONFIG_TMPFS_POSIX_ACL=y
500# CONFIG_HUGETLB_PAGE is not set
501# CONFIG_CONFIGFS_FS is not set
502CONFIG_MISC_FILESYSTEMS=y
503# CONFIG_ADFS_FS is not set
504# CONFIG_AFFS_FS is not set
505# CONFIG_ECRYPT_FS is not set
506# CONFIG_HFS_FS is not set
507# CONFIG_HFSPLUS_FS is not set
508# CONFIG_BEFS_FS is not set
509# CONFIG_BFS_FS is not set
510# CONFIG_EFS_FS is not set
511# CONFIG_CRAMFS is not set
512# CONFIG_SQUASHFS is not set
513# CONFIG_VXFS_FS is not set
514# CONFIG_MINIX_FS is not set
515# CONFIG_OMFS_FS is not set
516# CONFIG_HPFS_FS is not set
517# CONFIG_QNX4FS_FS is not set
518# CONFIG_ROMFS_FS is not set
519# CONFIG_SYSV_FS is not set
520# CONFIG_UFS_FS is not set
521# CONFIG_NILFS2_FS is not set
522CONFIG_NETWORK_FILESYSTEMS=y
523CONFIG_NFS_FS=y
524CONFIG_NFS_V3=y
525CONFIG_NFS_V3_ACL=y
526CONFIG_NFS_V4=y
527CONFIG_NFSD=y
528CONFIG_NFSD_V2_ACL=y
529CONFIG_NFSD_V3=y
530CONFIG_NFSD_V3_ACL=y
531CONFIG_NFSD_V4=y
532CONFIG_LOCKD=y
533CONFIG_LOCKD_V4=y
534CONFIG_EXPORTFS=y
535CONFIG_NFS_ACL_SUPPORT=y
536CONFIG_NFS_COMMON=y
537CONFIG_SUNRPC=y
538CONFIG_SUNRPC_GSS=y
539CONFIG_RPCSEC_GSS_KRB5=y
540# CONFIG_RPCSEC_GSS_SPKM3 is not set
541# CONFIG_SMB_FS is not set
542# CONFIG_CIFS is not set
543# CONFIG_NCP_FS is not set
544# CONFIG_CODA_FS is not set
545# CONFIG_AFS_FS is not set
546
547#
548# Partition Types
549#
550# CONFIG_PARTITION_ADVANCED is not set
551CONFIG_MSDOS_PARTITION=y
552# CONFIG_NLS is not set
553# CONFIG_DLM is not set
554
555#
556# Kernel hacking
557#
558CONFIG_TRACE_IRQFLAGS_SUPPORT=y
559# CONFIG_PRINTK_TIME is not set
560CONFIG_ENABLE_WARN_DEPRECATED=y
561CONFIG_ENABLE_MUST_CHECK=y
562CONFIG_FRAME_WARN=1024
563# CONFIG_MAGIC_SYSRQ is not set
564# CONFIG_UNUSED_SYMBOLS is not set
565# CONFIG_DEBUG_FS is not set
566# CONFIG_HEADERS_CHECK is not set
567# CONFIG_DEBUG_KERNEL is not set
568# CONFIG_DEBUG_MEMORY_INIT is not set
569# CONFIG_RCU_CPU_STALL_DETECTOR is not set
570# CONFIG_SYSCTL_SYSCALL_CHECK is not set
571CONFIG_TRACING_SUPPORT=y
572
573#
574# Tracers
575#
576# CONFIG_IRQSOFF_TRACER is not set
577# CONFIG_SCHED_TRACER is not set
578# CONFIG_CONTEXT_SWITCH_TRACER is not set
579# CONFIG_EVENT_TRACER is not set
580# CONFIG_BOOT_TRACER is not set
581# CONFIG_TRACE_BRANCH_PROFILING is not set
582# CONFIG_KMEMTRACE is not set
583# CONFIG_WORKQUEUE_TRACER is not set
584# CONFIG_BLK_DEV_IO_TRACE is not set
585# CONFIG_SAMPLES is not set
586CONFIG_CMDLINE=""
587
588#
589# Security options
590#
591CONFIG_KEYS=y
592CONFIG_KEYS_DEBUG_PROC_KEYS=y
593CONFIG_SECURITY=y
594# CONFIG_SECURITYFS is not set
595CONFIG_SECURITY_NETWORK=y
596# CONFIG_SECURITY_NETWORK_XFRM is not set
597# CONFIG_SECURITY_PATH is not set
598CONFIG_SECURITY_FILE_CAPABILITIES=y
599CONFIG_SECURITY_DEFAULT_MMAP_MIN_ADDR=0
600# CONFIG_SECURITY_TOMOYO is not set
601CONFIG_CRYPTO=y
602
603#
604# Crypto core or helper
605#
606# CONFIG_CRYPTO_FIPS is not set
607CONFIG_CRYPTO_ALGAPI=y
608CONFIG_CRYPTO_ALGAPI2=y
609CONFIG_CRYPTO_AEAD=y
610CONFIG_CRYPTO_AEAD2=y
611CONFIG_CRYPTO_BLKCIPHER=y
612CONFIG_CRYPTO_BLKCIPHER2=y
613CONFIG_CRYPTO_HASH=y
614CONFIG_CRYPTO_HASH2=y
615CONFIG_CRYPTO_RNG=y
616CONFIG_CRYPTO_RNG2=y
617CONFIG_CRYPTO_PCOMP=y
618CONFIG_CRYPTO_MANAGER=y
619CONFIG_CRYPTO_MANAGER2=y
620# CONFIG_CRYPTO_GF128MUL is not set
621CONFIG_CRYPTO_NULL=y
622CONFIG_CRYPTO_WORKQUEUE=y
623CONFIG_CRYPTO_CRYPTD=y
624# CONFIG_CRYPTO_AUTHENC is not set
625# CONFIG_CRYPTO_TEST is not set
626
627#
628# Authenticated Encryption with Associated Data
629#
630# CONFIG_CRYPTO_CCM is not set
631# CONFIG_CRYPTO_GCM is not set
632CONFIG_CRYPTO_SEQIV=y
633
634#
635# Block modes
636#
637CONFIG_CRYPTO_CBC=y
638# CONFIG_CRYPTO_CTR is not set
639# CONFIG_CRYPTO_CTS is not set
640# CONFIG_CRYPTO_ECB is not set
641# CONFIG_CRYPTO_LRW is not set
642# CONFIG_CRYPTO_PCBC is not set
643# CONFIG_CRYPTO_XTS is not set
644
645#
646# Hash modes
647#
648# CONFIG_CRYPTO_HMAC is not set
649# CONFIG_CRYPTO_XCBC is not set
650
651#
652# Digest
653#
654CONFIG_CRYPTO_CRC32C=y
655CONFIG_CRYPTO_MD4=y
656CONFIG_CRYPTO_MD5=y
657CONFIG_CRYPTO_MICHAEL_MIC=y
658# CONFIG_CRYPTO_RMD128 is not set
659# CONFIG_CRYPTO_RMD160 is not set
660# CONFIG_CRYPTO_RMD256 is not set
661# CONFIG_CRYPTO_RMD320 is not set
662# CONFIG_CRYPTO_SHA1 is not set
663# CONFIG_CRYPTO_SHA256 is not set
664# CONFIG_CRYPTO_SHA512 is not set
665# CONFIG_CRYPTO_TGR192 is not set
666# CONFIG_CRYPTO_WP512 is not set
667
668#
669# Ciphers
670#
671# CONFIG_CRYPTO_AES is not set
672# CONFIG_CRYPTO_ANUBIS is not set
673# CONFIG_CRYPTO_ARC4 is not set
674# CONFIG_CRYPTO_BLOWFISH is not set
675# CONFIG_CRYPTO_CAMELLIA is not set
676# CONFIG_CRYPTO_CAST5 is not set
677# CONFIG_CRYPTO_CAST6 is not set
678CONFIG_CRYPTO_DES=y
679# CONFIG_CRYPTO_FCRYPT is not set
680# CONFIG_CRYPTO_KHAZAD is not set
681# CONFIG_CRYPTO_SALSA20 is not set
682# CONFIG_CRYPTO_SEED is not set
683# CONFIG_CRYPTO_SERPENT is not set
684# CONFIG_CRYPTO_TEA is not set
685# CONFIG_CRYPTO_TWOFISH is not set
686
687#
688# Compression
689#
690# CONFIG_CRYPTO_DEFLATE is not set
691# CONFIG_CRYPTO_ZLIB is not set
692# CONFIG_CRYPTO_LZO is not set
693
694#
695# Random Number Generation
696#
697# CONFIG_CRYPTO_ANSI_CPRNG is not set
698# CONFIG_CRYPTO_HW is not set
699# CONFIG_BINARY_PRINTF is not set
700
701#
702# Library routines
703#
704CONFIG_BITREVERSE=y
705CONFIG_GENERIC_FIND_LAST_BIT=y
706CONFIG_CRC_CCITT=y
707CONFIG_CRC16=y
708# CONFIG_CRC_T10DIF is not set
709# CONFIG_CRC_ITU_T is not set
710CONFIG_CRC32=y
711# CONFIG_CRC7 is not set
712CONFIG_LIBCRC32C=y
713CONFIG_ZLIB_INFLATE=y
714CONFIG_DECOMPRESS_GZIP=y
715CONFIG_HAS_IOMEM=y
716CONFIG_HAS_IOPORT=y
717CONFIG_NLATTR=y
diff --git a/arch/score/include/asm/Kbuild b/arch/score/include/asm/Kbuild
new file mode 100644
index 000000000000..b367abd4620f
--- /dev/null
+++ b/arch/score/include/asm/Kbuild
@@ -0,0 +1,3 @@
1include include/asm-generic/Kbuild.asm
2
3header-y +=
diff --git a/arch/score/include/asm/asmmacro.h b/arch/score/include/asm/asmmacro.h
new file mode 100644
index 000000000000..a04a54cea25d
--- /dev/null
+++ b/arch/score/include/asm/asmmacro.h
@@ -0,0 +1,161 @@
1#ifndef _ASM_SCORE_ASMMACRO_H
2#define _ASM_SCORE_ASMMACRO_H
3
4#include <asm/asm-offsets.h>
5
6#ifdef __ASSEMBLY__
7
8.macro SAVE_ALL
9 mfcr r30, cr0
10 mv r31, r0
11 nop
12 /* if UMs == 1, change stack. */
13 slli.c r30, r30, 28
14 bpl 1f
15 la r31, kernelsp
16 lw r31, [r31]
171:
18 mv r30, r0
19 addri r0, r31, -PT_SIZE
20
21 sw r30, [r0, PT_R0]
22 .set r1
23 sw r1, [r0, PT_R1]
24 .set nor1
25 sw r2, [r0, PT_R2]
26 sw r3, [r0, PT_R3]
27 sw r4, [r0, PT_R4]
28 sw r5, [r0, PT_R5]
29 sw r6, [r0, PT_R6]
30 sw r7, [r0, PT_R7]
31
32 sw r8, [r0, PT_R8]
33 sw r9, [r0, PT_R9]
34 sw r10, [r0, PT_R10]
35 sw r11, [r0, PT_R11]
36 sw r12, [r0, PT_R12]
37 sw r13, [r0, PT_R13]
38 sw r14, [r0, PT_R14]
39 sw r15, [r0, PT_R15]
40
41 sw r16, [r0, PT_R16]
42 sw r17, [r0, PT_R17]
43 sw r18, [r0, PT_R18]
44 sw r19, [r0, PT_R19]
45 sw r20, [r0, PT_R20]
46 sw r21, [r0, PT_R21]
47 sw r22, [r0, PT_R22]
48 sw r23, [r0, PT_R23]
49
50 sw r24, [r0, PT_R24]
51 sw r25, [r0, PT_R25]
52 sw r25, [r0, PT_R25]
53 sw r26, [r0, PT_R26]
54 sw r27, [r0, PT_R27]
55
56 sw r28, [r0, PT_R28]
57 sw r29, [r0, PT_R29]
58 orri r28, r0, 0x1fff
59 li r31, 0x00001fff
60 xor r28, r28, r31
61
62 mfcehl r30, r31
63 sw r30, [r0, PT_CEH]
64 sw r31, [r0, PT_CEL]
65
66 mfcr r31, cr0
67 sw r31, [r0, PT_PSR]
68
69 mfcr r31, cr1
70 sw r31, [r0, PT_CONDITION]
71
72 mfcr r31, cr2
73 sw r31, [r0, PT_ECR]
74
75 mfcr r31, cr5
76 srli r31, r31, 1
77 slli r31, r31, 1
78 sw r31, [r0, PT_EPC]
79.endm
80
81.macro RESTORE_ALL_AND_RET
82 mfcr r30, cr0
83 srli r30, r30, 1
84 slli r30, r30, 1
85 mtcr r30, cr0
86 nop
87 nop
88 nop
89 nop
90 nop
91
92 .set r1
93 ldis r1, 0x00ff
94 and r30, r30, r1
95 not r1, r1
96 lw r31, [r0, PT_PSR]
97 and r31, r31, r1
98 .set nor1
99 or r31, r31, r30
100 mtcr r31, cr0
101 nop
102 nop
103 nop
104 nop
105 nop
106
107 lw r30, [r0, PT_CONDITION]
108 mtcr r30, cr1
109 nop
110 nop
111 nop
112 nop
113 nop
114
115 lw r30, [r0, PT_CEH]
116 lw r31, [r0, PT_CEL]
117 mtcehl r30, r31
118
119 .set r1
120 lw r1, [r0, PT_R1]
121 .set nor1
122 lw r2, [r0, PT_R2]
123 lw r3, [r0, PT_R3]
124 lw r4, [r0, PT_R4]
125 lw r5, [r0, PT_R5]
126 lw r6, [r0, PT_R6]
127 lw r7, [r0, PT_R7]
128
129 lw r8, [r0, PT_R8]
130 lw r9, [r0, PT_R9]
131 lw r10, [r0, PT_R10]
132 lw r11, [r0, PT_R11]
133 lw r12, [r0, PT_R12]
134 lw r13, [r0, PT_R13]
135 lw r14, [r0, PT_R14]
136 lw r15, [r0, PT_R15]
137
138 lw r16, [r0, PT_R16]
139 lw r17, [r0, PT_R17]
140 lw r18, [r0, PT_R18]
141 lw r19, [r0, PT_R19]
142 lw r20, [r0, PT_R20]
143 lw r21, [r0, PT_R21]
144 lw r22, [r0, PT_R22]
145 lw r23, [r0, PT_R23]
146
147 lw r24, [r0, PT_R24]
148 lw r25, [r0, PT_R25]
149 lw r26, [r0, PT_R26]
150 lw r27, [r0, PT_R27]
151 lw r28, [r0, PT_R28]
152 lw r29, [r0, PT_R29]
153
154 lw r30, [r0, PT_EPC]
155 lw r0, [r0, PT_R0]
156 mtcr r30, cr5
157 rte
158.endm
159
160#endif /* __ASSEMBLY__ */
161#endif /* _ASM_SCORE_ASMMACRO_H */
diff --git a/arch/score/include/asm/atomic.h b/arch/score/include/asm/atomic.h
new file mode 100644
index 000000000000..84eb8ddf9f3f
--- /dev/null
+++ b/arch/score/include/asm/atomic.h
@@ -0,0 +1,6 @@
1#ifndef _ASM_SCORE_ATOMIC_H
2#define _ASM_SCORE_ATOMIC_H
3
4#include <asm-generic/atomic.h>
5
6#endif /* _ASM_SCORE_ATOMIC_H */
diff --git a/arch/score/include/asm/auxvec.h b/arch/score/include/asm/auxvec.h
new file mode 100644
index 000000000000..f69151565aee
--- /dev/null
+++ b/arch/score/include/asm/auxvec.h
@@ -0,0 +1,4 @@
1#ifndef _ASM_SCORE_AUXVEC_H
2#define _ASM_SCORE_AUXVEC_H
3
4#endif /* _ASM_SCORE_AUXVEC_H */
diff --git a/arch/score/include/asm/bitops.h b/arch/score/include/asm/bitops.h
new file mode 100644
index 000000000000..2763b050fca8
--- /dev/null
+++ b/arch/score/include/asm/bitops.h
@@ -0,0 +1,16 @@
1#ifndef _ASM_SCORE_BITOPS_H
2#define _ASM_SCORE_BITOPS_H
3
4#include <asm/byteorder.h> /* swab32 */
5#include <asm/system.h> /* save_flags */
6
7/*
8 * clear_bit() doesn't provide any barrier for the compiler.
9 */
10#define smp_mb__before_clear_bit() barrier()
11#define smp_mb__after_clear_bit() barrier()
12
13#include <asm-generic/bitops.h>
14#include <asm-generic/bitops/__fls.h>
15
16#endif /* _ASM_SCORE_BITOPS_H */
diff --git a/arch/score/include/asm/bitsperlong.h b/arch/score/include/asm/bitsperlong.h
new file mode 100644
index 000000000000..86ff337aa459
--- /dev/null
+++ b/arch/score/include/asm/bitsperlong.h
@@ -0,0 +1,6 @@
1#ifndef _ASM_SCORE_BITSPERLONG_H
2#define _ASM_SCORE_BITSPERLONG_H
3
4#include <asm-generic/bitsperlong.h>
5
6#endif /* _ASM_SCORE_BITSPERLONG_H */
diff --git a/arch/score/include/asm/bug.h b/arch/score/include/asm/bug.h
new file mode 100644
index 000000000000..bb76a330bcf1
--- /dev/null
+++ b/arch/score/include/asm/bug.h
@@ -0,0 +1,6 @@
1#ifndef _ASM_SCORE_BUG_H
2#define _ASM_SCORE_BUG_H
3
4#include <asm-generic/bug.h>
5
6#endif /* _ASM_SCORE_BUG_H */
diff --git a/arch/score/include/asm/bugs.h b/arch/score/include/asm/bugs.h
new file mode 100644
index 000000000000..a062e1056bb3
--- /dev/null
+++ b/arch/score/include/asm/bugs.h
@@ -0,0 +1,6 @@
1#ifndef _ASM_SCORE_BUGS_H
2#define _ASM_SCORE_BUGS_H
3
4#include <asm-generic/bugs.h>
5
6#endif /* _ASM_SCORE_BUGS_H */
diff --git a/arch/score/include/asm/byteorder.h b/arch/score/include/asm/byteorder.h
new file mode 100644
index 000000000000..88cbebc79212
--- /dev/null
+++ b/arch/score/include/asm/byteorder.h
@@ -0,0 +1,6 @@
1#ifndef _ASM_SCORE_BYTEORDER_H
2#define _ASM_SCORE_BYTEORDER_H
3
4#include <linux/byteorder/little_endian.h>
5
6#endif /* _ASM_SCORE_BYTEORDER_H */
diff --git a/arch/score/include/asm/cache.h b/arch/score/include/asm/cache.h
new file mode 100644
index 000000000000..ae3d59f2d2c4
--- /dev/null
+++ b/arch/score/include/asm/cache.h
@@ -0,0 +1,7 @@
1#ifndef _ASM_SCORE_CACHE_H
2#define _ASM_SCORE_CACHE_H
3
4#define L1_CACHE_SHIFT 4
5#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
6
7#endif /* _ASM_SCORE_CACHE_H */
diff --git a/arch/score/include/asm/cacheflush.h b/arch/score/include/asm/cacheflush.h
new file mode 100644
index 000000000000..07cc8fc457cd
--- /dev/null
+++ b/arch/score/include/asm/cacheflush.h
@@ -0,0 +1,45 @@
1#ifndef _ASM_SCORE_CACHEFLUSH_H
2#define _ASM_SCORE_CACHEFLUSH_H
3
4/* Keep includes the same across arches. */
5#include <linux/mm.h>
6
7extern void flush_cache_all(void);
8extern void flush_cache_mm(struct mm_struct *mm);
9extern void flush_cache_range(struct vm_area_struct *vma,
10 unsigned long start, unsigned long end);
11extern void flush_cache_page(struct vm_area_struct *vma,
12 unsigned long page, unsigned long pfn);
13extern void flush_cache_sigtramp(unsigned long addr);
14extern void flush_icache_all(void);
15extern void flush_icache_range(unsigned long start, unsigned long end);
16extern void flush_dcache_range(unsigned long start, unsigned long end);
17
18#define flush_cache_dup_mm(mm) do {} while (0)
19#define flush_dcache_page(page) do {} while (0)
20#define flush_dcache_mmap_lock(mapping) do {} while (0)
21#define flush_dcache_mmap_unlock(mapping) do {} while (0)
22#define flush_cache_vmap(start, end) do {} while (0)
23#define flush_cache_vunmap(start, end) do {} while (0)
24
25static inline void flush_icache_page(struct vm_area_struct *vma,
26 struct page *page)
27{
28 if (vma->vm_flags & VM_EXEC) {
29 void *v = page_address(page);
30 flush_icache_range((unsigned long) v,
31 (unsigned long) v + PAGE_SIZE);
32 }
33}
34
35#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
36 memcpy(dst, src, len)
37
38#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
39 do { \
40 memcpy(dst, src, len); \
41 if ((vma->vm_flags & VM_EXEC)) \
42 flush_cache_page(vma, vaddr, page_to_pfn(page));\
43 } while (0)
44
45#endif /* _ASM_SCORE_CACHEFLUSH_H */
diff --git a/arch/score/include/asm/checksum.h b/arch/score/include/asm/checksum.h
new file mode 100644
index 000000000000..f909ac3144a4
--- /dev/null
+++ b/arch/score/include/asm/checksum.h
@@ -0,0 +1,235 @@
1#ifndef _ASM_SCORE_CHECKSUM_H
2#define _ASM_SCORE_CHECKSUM_H
3
4#include <linux/in6.h>
5#include <asm/uaccess.h>
6
7/*
8 * computes the checksum of a memory block at buff, length len,
9 * and adds in "sum" (32-bit)
10 *
11 * returns a 32-bit number suitable for feeding into itself
12 * or csum_tcpudp_magic
13 *
14 * this function must be called with even lengths, except
15 * for the last fragment, which may be odd
16 *
17 * it's best to have buff aligned on a 32-bit boundary
18 */
19unsigned int csum_partial(const void *buff, int len, __wsum sum);
20unsigned int csum_partial_copy_from_user(const char *src, char *dst, int len,
21 unsigned int sum, int *csum_err);
22unsigned int csum_partial_copy(const char *src, char *dst,
23 int len, unsigned int sum);
24
25/*
26 * this is a new version of the above that records errors it finds in *errp,
27 * but continues and zeros the rest of the buffer.
28 */
29
30/*
31 * Copy and checksum to user
32 */
33#define HAVE_CSUM_COPY_USER
34static inline
35__wsum csum_and_copy_to_user(const void *src, void __user *dst, int len,
36 __wsum sum, int *err_ptr)
37{
38 sum = csum_partial(src, len, sum);
39 if (copy_to_user(dst, src, len)) {
40 *err_ptr = -EFAULT;
41 return (__force __wsum) -1; /* invalid checksum */
42 }
43 return sum;
44}
45
46
47#define csum_partial_copy_nocheck csum_partial_copy
48/*
49 * Fold a partial checksum without adding pseudo headers
50 */
51
52static inline __sum16 csum_fold(__wsum sum)
53{
54 /* the while loop is unnecessary really, it's always enough with two
55 iterations */
56 __asm__ __volatile__(
57 ".set volatile\n\t"
58 ".set\tr1\n\t"
59 "slli\tr1,%0, 16\n\t"
60 "add\t%0,%0, r1\n\t"
61 "cmp.c\tr1, %0\n\t"
62 "srli\t%0, %0, 16\n\t"
63 "bleu\t1f\n\t"
64 "addi\t%0, 0x1\n\t"
65 "1:ldi\tr30, 0xffff\n\t"
66 "xor\t%0, %0, r30\n\t"
67 "slli\t%0, %0, 16\n\t"
68 "srli\t%0, %0, 16\n\t"
69 ".set\tnor1\n\t"
70 ".set optimize\n\t"
71 : "=r" (sum)
72 : "0" (sum));
73 return sum;
74}
75
76/*
77 * This is a version of ip_compute_csum() optimized for IP headers,
78 * which always checksum on 4 octet boundaries.
79 *
80 * By Jorge Cwik <jorge@laser.satlink.net>, adapted for linux by
81 * Arnt Gulbrandsen.
82 */
83static inline __sum16 ip_fast_csum(const void *iph, unsigned int ihl)
84{
85 unsigned int sum;
86 unsigned long dummy;
87
88 __asm__ __volatile__(
89 ".set volatile\n\t"
90 ".set\tnor1\n\t"
91 "lw\t%0, [%1]\n\t"
92 "subri\t%2, %2, 4\n\t"
93 "slli\t%2, %2, 2\n\t"
94 "lw\t%3, [%1, 4]\n\t"
95 "add\t%2, %2, %1\n\t"
96 "add\t%0, %0, %3\n\t"
97 "cmp.c\t%3, %0\n\t"
98 "lw\t%3, [%1, 8]\n\t"
99 "bleu\t1f\n\t"
100 "addi\t%0, 0x1\n\t"
101 "1:\n\t"
102 "add\t%0, %0, %3\n\t"
103 "cmp.c\t%3, %0\n\t"
104 "lw\t%3, [%1, 12]\n\t"
105 "bleu\t1f\n\t"
106 "addi\t%0, 0x1\n\t"
107 "1:add\t%0, %0, %3\n\t"
108 "cmp.c\t%3, %0\n\t"
109 "bleu\t1f\n\t"
110 "addi\t%0, 0x1\n"
111
112 "1:\tlw\t%3, [%1, 16]\n\t"
113 "addi\t%1, 4\n\t"
114 "add\t%0, %0, %3\n\t"
115 "cmp.c\t%3, %0\n\t"
116 "bleu\t2f\n\t"
117 "addi\t%0, 0x1\n"
118 "2:cmp.c\t%2, %1\n\t"
119 "bne\t1b\n\t"
120
121 ".set\tr1\n\t"
122 ".set optimize\n\t"
123 : "=&r" (sum), "=&r" (iph), "=&r" (ihl), "=&r" (dummy)
124 : "1" (iph), "2" (ihl));
125
126 return csum_fold(sum);
127}
128
129static inline __wsum
130csum_tcpudp_nofold(__be32 saddr, __be32 daddr, unsigned short len,
131 unsigned short proto, __wsum sum)
132{
133 unsigned long tmp = (ntohs(len) << 16) + proto * 256;
134 __asm__ __volatile__(
135 ".set volatile\n\t"
136 "add\t%0, %0, %2\n\t"
137 "cmp.c\t%2, %0\n\t"
138 "bleu\t1f\n\t"
139 "addi\t%0, 0x1\n\t"
140 "1:\n\t"
141 "add\t%0, %0, %3\n\t"
142 "cmp.c\t%3, %0\n\t"
143 "bleu\t1f\n\t"
144 "addi\t%0, 0x1\n\t"
145 "1:\n\t"
146 "add\t%0, %0, %4\n\t"
147 "cmp.c\t%4, %0\n\t"
148 "bleu\t1f\n\t"
149 "addi\t%0, 0x1\n\t"
150 "1:\n\t"
151 ".set optimize\n\t"
152 : "=r" (sum)
153 : "0" (daddr), "r"(saddr),
154 "r" (tmp),
155 "r" (sum));
156 return sum;
157}
158
159/*
160 * computes the checksum of the TCP/UDP pseudo-header
161 * returns a 16-bit checksum, already complemented
162 */
163static inline __sum16
164csum_tcpudp_magic(__be32 saddr, __be32 daddr, unsigned short len,
165 unsigned short proto, __wsum sum)
166{
167 return csum_fold(csum_tcpudp_nofold(saddr, daddr, len, proto, sum));
168}
169
170/*
171 * this routine is used for miscellaneous IP-like checksums, mainly
172 * in icmp.c
173 */
174
175static inline unsigned short ip_compute_csum(const void *buff, int len)
176{
177 return csum_fold(csum_partial(buff, len, 0));
178}
179
180#define _HAVE_ARCH_IPV6_CSUM
181static inline __sum16 csum_ipv6_magic(const struct in6_addr *saddr,
182 const struct in6_addr *daddr,
183 __u32 len, unsigned short proto,
184 __wsum sum)
185{
186 __asm__ __volatile__(
187 ".set\tnoreorder\t\t\t# csum_ipv6_magic\n\t"
188 ".set\tnoat\n\t"
189 "addu\t%0, %5\t\t\t# proto (long in network byte order)\n\t"
190 "sltu\t$1, %0, %5\n\t"
191 "addu\t%0, $1\n\t"
192 "addu\t%0, %6\t\t\t# csum\n\t"
193 "sltu\t$1, %0, %6\n\t"
194 "lw\t%1, 0(%2)\t\t\t# four words source address\n\t"
195 "addu\t%0, $1\n\t"
196 "addu\t%0, %1\n\t"
197 "sltu\t$1, %0, %1\n\t"
198 "lw\t%1, 4(%2)\n\t"
199 "addu\t%0, $1\n\t"
200 "addu\t%0, %1\n\t"
201 "sltu\t$1, %0, %1\n\t"
202 "lw\t%1, 8(%2)\n\t"
203 "addu\t%0, $1\n\t"
204 "addu\t%0, %1\n\t"
205 "sltu\t$1, %0, %1\n\t"
206 "lw\t%1, 12(%2)\n\t"
207 "addu\t%0, $1\n\t"
208 "addu\t%0, %1\n\t"
209 "sltu\t$1, %0, %1\n\t"
210 "lw\t%1, 0(%3)\n\t"
211 "addu\t%0, $1\n\t"
212 "addu\t%0, %1\n\t"
213 "sltu\t$1, %0, %1\n\t"
214 "lw\t%1, 4(%3)\n\t"
215 "addu\t%0, $1\n\t"
216 "addu\t%0, %1\n\t"
217 "sltu\t$1, %0, %1\n\t"
218 "lw\t%1, 8(%3)\n\t"
219 "addu\t%0, $1\n\t"
220 "addu\t%0, %1\n\t"
221 "sltu\t$1, %0, %1\n\t"
222 "lw\t%1, 12(%3)\n\t"
223 "addu\t%0, $1\n\t"
224 "addu\t%0, %1\n\t"
225 "sltu\t$1, %0, %1\n\t"
226 "addu\t%0, $1\t\t\t# Add final carry\n\t"
227 ".set\tnoat\n\t"
228 ".set\tnoreorder"
229 : "=r" (sum), "=r" (proto)
230 : "r" (saddr), "r" (daddr),
231 "0" (htonl(len)), "1" (htonl(proto)), "r" (sum));
232
233 return csum_fold(sum);
234}
235#endif /* _ASM_SCORE_CHECKSUM_H */
diff --git a/arch/score/include/asm/cputime.h b/arch/score/include/asm/cputime.h
new file mode 100644
index 000000000000..1fced99f0d67
--- /dev/null
+++ b/arch/score/include/asm/cputime.h
@@ -0,0 +1,6 @@
1#ifndef _ASM_SCORE_CPUTIME_H
2#define _ASM_SCORE_CPUTIME_H
3
4#include <asm-generic/cputime.h>
5
6#endif /* _ASM_SCORE_CPUTIME_H */
diff --git a/arch/score/include/asm/current.h b/arch/score/include/asm/current.h
new file mode 100644
index 000000000000..16eae9cbaf1a
--- /dev/null
+++ b/arch/score/include/asm/current.h
@@ -0,0 +1,6 @@
1#ifndef _ASM_SCORE_CURRENT_H
2#define _ASM_SCORE_CURRENT_H
3
4#include <asm-generic/current.h>
5
6#endif /* _ASM_SCORE_CURRENT_H */
diff --git a/arch/score/include/asm/delay.h b/arch/score/include/asm/delay.h
new file mode 100644
index 000000000000..6726ec199dc0
--- /dev/null
+++ b/arch/score/include/asm/delay.h
@@ -0,0 +1,26 @@
1#ifndef _ASM_SCORE_DELAY_H
2#define _ASM_SCORE_DELAY_H
3
4static inline void __delay(unsigned long loops)
5{
6 /* 3 cycles per loop. */
7 __asm__ __volatile__ (
8 "1:\tsubi\t%0, 3\n\t"
9 "cmpz.c\t%0\n\t"
10 "ble\t1b\n\t"
11 : "=r" (loops)
12 : "0" (loops));
13}
14
15static inline void __udelay(unsigned long usecs)
16{
17 unsigned long loops_per_usec;
18
19 loops_per_usec = (loops_per_jiffy * HZ) / 1000000;
20
21 __delay(usecs * loops_per_usec);
22}
23
24#define udelay(usecs) __udelay(usecs)
25
26#endif /* _ASM_SCORE_DELAY_H */
diff --git a/arch/score/include/asm/device.h b/arch/score/include/asm/device.h
new file mode 100644
index 000000000000..2dc7cc5d5ef9
--- /dev/null
+++ b/arch/score/include/asm/device.h
@@ -0,0 +1,6 @@
1#ifndef _ASM_SCORE_DEVICE_H
2#define _ASM_SCORE_DEVICE_H
3
4#include <asm-generic/device.h>
5
6#endif /* _ASM_SCORE_DEVICE_H */
diff --git a/arch/score/include/asm/div64.h b/arch/score/include/asm/div64.h
new file mode 100644
index 000000000000..75fae19824eb
--- /dev/null
+++ b/arch/score/include/asm/div64.h
@@ -0,0 +1,6 @@
1#ifndef _ASM_SCORE_DIV64_H
2#define _ASM_SCORE_DIV64_H
3
4#include <asm-generic/div64.h>
5
6#endif /* _ASM_SCORE_DIV64_H */
diff --git a/arch/score/include/asm/dma-mapping.h b/arch/score/include/asm/dma-mapping.h
new file mode 100644
index 000000000000..f9c0193c7a53
--- /dev/null
+++ b/arch/score/include/asm/dma-mapping.h
@@ -0,0 +1,6 @@
1#ifndef _ASM_SCORE_DMA_MAPPING_H
2#define _ASM_SCORE_DMA_MAPPING_H
3
4#include <asm-generic/dma-mapping-broken.h>
5
6#endif /* _ASM_SCORE_DMA_MAPPING_H */
diff --git a/arch/score/include/asm/dma.h b/arch/score/include/asm/dma.h
new file mode 100644
index 000000000000..9f44185298bf
--- /dev/null
+++ b/arch/score/include/asm/dma.h
@@ -0,0 +1,8 @@
1#ifndef _ASM_SCORE_DMA_H
2#define _ASM_SCORE_DMA_H
3
4#include <asm/io.h>
5
6#define MAX_DMA_ADDRESS (0)
7
8#endif /* _ASM_SCORE_DMA_H */
diff --git a/arch/score/include/asm/elf.h b/arch/score/include/asm/elf.h
new file mode 100644
index 000000000000..43526d9fda93
--- /dev/null
+++ b/arch/score/include/asm/elf.h
@@ -0,0 +1,103 @@
1#ifndef _ASM_SCORE_ELF_H
2#define _ASM_SCORE_ELF_H
3
4#include <linux/ptrace.h>
5
6#define EM_SCORE7 135
7
8/* Relocation types. */
9#define R_SCORE_NONE 0
10#define R_SCORE_HI16 1
11#define R_SCORE_LO16 2
12#define R_SCORE_BCMP 3
13#define R_SCORE_24 4
14#define R_SCORE_PC19 5
15#define R_SCORE16_11 6
16#define R_SCORE16_PC8 7
17#define R_SCORE_ABS32 8
18#define R_SCORE_ABS16 9
19#define R_SCORE_DUMMY2 10
20#define R_SCORE_GP15 11
21#define R_SCORE_GNU_VTINHERIT 12
22#define R_SCORE_GNU_VTENTRY 13
23#define R_SCORE_GOT15 14
24#define R_SCORE_GOT_LO16 15
25#define R_SCORE_CALL15 16
26#define R_SCORE_GPREL32 17
27#define R_SCORE_REL32 18
28#define R_SCORE_DUMMY_HI16 19
29#define R_SCORE_IMM30 20
30#define R_SCORE_IMM32 21
31
32/* ELF register definitions */
33typedef unsigned long elf_greg_t;
34
35#define ELF_NGREG (sizeof(struct pt_regs) / sizeof(elf_greg_t))
36typedef elf_greg_t elf_gregset_t[ELF_NGREG];
37
38/* Score does not have fp regs. */
39typedef double elf_fpreg_t;
40typedef elf_fpreg_t elf_fpregset_t;
41
42#define elf_check_arch(x) ((x)->e_machine == EM_SCORE7)
43
44/*
45 * These are used to set parameters in the core dumps.
46 */
47#define ELF_CLASS ELFCLASS32
48
49/*
50 * These are used to set parameters in the core dumps.
51 */
52#define ELF_DATA ELFDATA2LSB
53#define ELF_ARCH EM_SCORE7
54
55#define SET_PERSONALITY(ex) \
56do { \
57 set_personality(PER_LINUX); \
58} while (0)
59
60struct task_struct;
61struct pt_regs;
62
63#define CORE_DUMP_USE_REGSET
64#define USE_ELF_CORE_DUMP
65#define ELF_EXEC_PAGESIZE PAGE_SIZE
66
67/* This yields a mask that user programs can use to figure out what
68 instruction set this cpu supports. This could be done in userspace,
69 but it's not easy, and we've already done it here. */
70
71#define ELF_HWCAP (0)
72
73/* This yields a string that ld.so will use to load implementation
74 specific libraries for optimization. This is more specific in
75 intent than poking at uname or /proc/cpuinfo.
76
77 For the moment, we have only optimizations for the Intel generations,
78 but that could change... */
79
80#define ELF_PLATFORM (NULL)
81
82#define ELF_PLAT_INIT(_r, load_addr) \
83do { \
84 _r->regs[1] = _r->regs[2] = _r->regs[3] = _r->regs[4] = 0; \
85 _r->regs[5] = _r->regs[6] = _r->regs[7] = _r->regs[8] = 0; \
86 _r->regs[9] = _r->regs[10] = _r->regs[11] = _r->regs[12] = 0; \
87 _r->regs[13] = _r->regs[14] = _r->regs[15] = _r->regs[16] = 0; \
88 _r->regs[17] = _r->regs[18] = _r->regs[19] = _r->regs[20] = 0; \
89 _r->regs[21] = _r->regs[22] = _r->regs[23] = _r->regs[24] = 0; \
90 _r->regs[25] = _r->regs[26] = _r->regs[27] = _r->regs[28] = 0; \
91 _r->regs[30] = _r->regs[31] = 0; \
92} while (0)
93
94/* This is the location that an ET_DYN program is loaded if exec'ed. Typical
95 use of this is to invoke "./ld.so someprog" to test out a new version of
96 the loader. We need to make sure that it is out of the way of the program
97 that it will "exec", and that there is sufficient room for the brk. */
98
99#ifndef ELF_ET_DYN_BASE
100#define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2)
101#endif
102
103#endif /* _ASM_SCORE_ELF_H */
diff --git a/arch/score/include/asm/emergency-restart.h b/arch/score/include/asm/emergency-restart.h
new file mode 100644
index 000000000000..ca31e9803a8a
--- /dev/null
+++ b/arch/score/include/asm/emergency-restart.h
@@ -0,0 +1,6 @@
1#ifndef _ASM_SCORE_EMERGENCY_RESTART_H
2#define _ASM_SCORE_EMERGENCY_RESTART_H
3
4#include <asm-generic/emergency-restart.h>
5
6#endif /* _ASM_SCORE_EMERGENCY_RESTART_H */
diff --git a/arch/score/include/asm/errno.h b/arch/score/include/asm/errno.h
new file mode 100644
index 000000000000..29ff39d5ab47
--- /dev/null
+++ b/arch/score/include/asm/errno.h
@@ -0,0 +1,6 @@
1#ifndef _ASM_SCORE_ERRNO_H
2#define _ASM_SCORE_ERRNO_H
3
4#include <asm-generic/errno.h>
5
6#endif /* _ASM_SCORE_ERRNO_H */
diff --git a/arch/score/include/asm/fcntl.h b/arch/score/include/asm/fcntl.h
new file mode 100644
index 000000000000..03968a3103a4
--- /dev/null
+++ b/arch/score/include/asm/fcntl.h
@@ -0,0 +1,6 @@
1#ifndef _ASM_SCORE_FCNTL_H
2#define _ASM_SCORE_FCNTL_H
3
4#include <asm-generic/fcntl.h>
5
6#endif /* _ASM_SCORE_FCNTL_H */
diff --git a/arch/score/include/asm/fixmap.h b/arch/score/include/asm/fixmap.h
new file mode 100644
index 000000000000..ee1676694024
--- /dev/null
+++ b/arch/score/include/asm/fixmap.h
@@ -0,0 +1,82 @@
1#ifndef _ASM_SCORE_FIXMAP_H
2#define _ASM_SCORE_FIXMAP_H
3
4#include <asm/page.h>
5
6#define PHY_RAM_BASE 0x00000000
7#define PHY_IO_BASE 0x10000000
8
9#define VIRTUAL_RAM_BASE 0xa0000000
10#define VIRTUAL_IO_BASE 0xb0000000
11
12#define RAM_SPACE_SIZE 0x10000000
13#define IO_SPACE_SIZE 0x10000000
14
15/* Kernel unmapped, cached 512MB */
16#define KSEG1 0xa0000000
17
18/*
19 * Here we define all the compile-time 'special' virtual
20 * addresses. The point is to have a constant address at
21 * compile time, but to set the physical address only
22 * in the boot process. We allocate these special addresses
23 * from the end of virtual memory (0xfffff000) backwards.
24 * Also this lets us do fail-safe vmalloc(), we
25 * can guarantee that these special addresses and
26 * vmalloc()-ed addresses never overlap.
27 *
28 * these 'compile-time allocated' memory buffers are
29 * fixed-size 4k pages. (or larger if used with an increment
30 * highger than 1) use fixmap_set(idx,phys) to associate
31 * physical memory with fixmap indices.
32 *
33 * TLB entries of such buffers will not be flushed across
34 * task switches.
35 */
36
37/*
38 * on UP currently we will have no trace of the fixmap mechanizm,
39 * no page table allocations, etc. This might change in the
40 * future, say framebuffers for the console driver(s) could be
41 * fix-mapped?
42 */
43enum fixed_addresses {
44#define FIX_N_COLOURS 8
45 FIX_CMAP_BEGIN,
46 FIX_CMAP_END = FIX_CMAP_BEGIN + FIX_N_COLOURS,
47 __end_of_fixed_addresses
48};
49
50/*
51 * used by vmalloc.c.
52 *
53 * Leave one empty page between vmalloc'ed areas and
54 * the start of the fixmap, and leave one page empty
55 * at the top of mem..
56 */
57#define FIXADDR_TOP ((unsigned long)(long)(int)0xfefe0000)
58#define FIXADDR_SIZE (__end_of_fixed_addresses << PAGE_SHIFT)
59#define FIXADDR_START (FIXADDR_TOP - FIXADDR_SIZE)
60
61#define __fix_to_virt(x) (FIXADDR_TOP - ((x) << PAGE_SHIFT))
62#define __virt_to_fix(x) \
63 ((FIXADDR_TOP - ((x) & PAGE_MASK)) >> PAGE_SHIFT)
64
65extern void __this_fixmap_does_not_exist(void);
66
67/*
68 * 'index to address' translation. If anyone tries to use the idx
69 * directly without tranlation, we catch the bug with a NULL-deference
70 * kernel oops. Illegal ranges of incoming indices are caught too.
71 */
72static inline unsigned long fix_to_virt(const unsigned int idx)
73{
74 return __fix_to_virt(idx);
75}
76
77static inline unsigned long virt_to_fix(const unsigned long vaddr)
78{
79 return __virt_to_fix(vaddr);
80}
81
82#endif /* _ASM_SCORE_FIXMAP_H */
diff --git a/arch/score/include/asm/ftrace.h b/arch/score/include/asm/ftrace.h
new file mode 100644
index 000000000000..79d6f10e1f5b
--- /dev/null
+++ b/arch/score/include/asm/ftrace.h
@@ -0,0 +1,4 @@
1#ifndef _ASM_SCORE_FTRACE_H
2#define _ASM_SCORE_FTRACE_H
3
4#endif /* _ASM_SCORE_FTRACE_H */
diff --git a/arch/score/include/asm/futex.h b/arch/score/include/asm/futex.h
new file mode 100644
index 000000000000..1dca2420f8db
--- /dev/null
+++ b/arch/score/include/asm/futex.h
@@ -0,0 +1,6 @@
1#ifndef _ASM_SCORE_FUTEX_H
2#define _ASM_SCORE_FUTEX_H
3
4#include <asm-generic/futex.h>
5
6#endif /* _ASM_SCORE_FUTEX_H */
diff --git a/arch/score/include/asm/hardirq.h b/arch/score/include/asm/hardirq.h
new file mode 100644
index 000000000000..dc932c50d3ee
--- /dev/null
+++ b/arch/score/include/asm/hardirq.h
@@ -0,0 +1,6 @@
1#ifndef _ASM_SCORE_HARDIRQ_H
2#define _ASM_SCORE_HARDIRQ_H
3
4#include <asm-generic/hardirq.h>
5
6#endif /* _ASM_SCORE_HARDIRQ_H */
diff --git a/arch/score/include/asm/hw_irq.h b/arch/score/include/asm/hw_irq.h
new file mode 100644
index 000000000000..4caafb2b509a
--- /dev/null
+++ b/arch/score/include/asm/hw_irq.h
@@ -0,0 +1,4 @@
1#ifndef _ASM_SCORE_HW_IRQ_H
2#define _ASM_SCORE_HW_IRQ_H
3
4#endif /* _ASM_SCORE_HW_IRQ_H */
diff --git a/arch/score/include/asm/io.h b/arch/score/include/asm/io.h
new file mode 100644
index 000000000000..fbbfd7132e3b
--- /dev/null
+++ b/arch/score/include/asm/io.h
@@ -0,0 +1,9 @@
1#ifndef _ASM_SCORE_IO_H
2#define _ASM_SCORE_IO_H
3
4#include <asm-generic/io.h>
5
6#define virt_to_bus virt_to_phys
7#define bus_to_virt phys_to_virt
8
9#endif /* _ASM_SCORE_IO_H */
diff --git a/arch/score/include/asm/ioctl.h b/arch/score/include/asm/ioctl.h
new file mode 100644
index 000000000000..a351d2194bfd
--- /dev/null
+++ b/arch/score/include/asm/ioctl.h
@@ -0,0 +1,6 @@
1#ifndef _ASM_SCORE_IOCTL_H
2#define _ASM_SCORE_IOCTL_H
3
4#include <asm-generic/ioctl.h>
5
6#endif /* _ASM_SCORE_IOCTL_H */
diff --git a/arch/score/include/asm/ioctls.h b/arch/score/include/asm/ioctls.h
new file mode 100644
index 000000000000..ed01d2b9aeab
--- /dev/null
+++ b/arch/score/include/asm/ioctls.h
@@ -0,0 +1,6 @@
1#ifndef _ASM_SCORE_IOCTLS_H
2#define _ASM_SCORE_IOCTLS_H
3
4#include <asm-generic/ioctls.h>
5
6#endif /* _ASM_SCORE_IOCTLS_H */
diff --git a/arch/score/include/asm/ipcbuf.h b/arch/score/include/asm/ipcbuf.h
new file mode 100644
index 000000000000..e082ceff1818
--- /dev/null
+++ b/arch/score/include/asm/ipcbuf.h
@@ -0,0 +1,6 @@
1#ifndef _ASM_SCORE_IPCBUF_H
2#define _ASM_SCORE_IPCBUF_H
3
4#include <asm-generic/ipcbuf.h>
5
6#endif /* _ASM_SCORE_IPCBUF_H */
diff --git a/arch/score/include/asm/irq.h b/arch/score/include/asm/irq.h
new file mode 100644
index 000000000000..c883f3df33fa
--- /dev/null
+++ b/arch/score/include/asm/irq.h
@@ -0,0 +1,25 @@
1#ifndef _ASM_SCORE_IRQ_H
2#define _ASM_SCORE_IRQ_H
3
4#define EXCEPTION_VECTOR_BASE_ADDR 0xa0000000
5#define VECTOR_ADDRESS_OFFSET_MODE4 0
6#define VECTOR_ADDRESS_OFFSET_MODE16 1
7
8#define DEBUG_VECTOR_SIZE (0x4)
9#define DEBUG_VECTOR_BASE_ADDR ((EXCEPTION_VECTOR_BASE_ADDR) + 0x1fc)
10
11#define GENERAL_VECTOR_SIZE (0x10)
12#define GENERAL_VECTOR_BASE_ADDR ((EXCEPTION_VECTOR_BASE_ADDR) + 0x200)
13
14#define NR_IRQS 64
15#define IRQ_VECTOR_SIZE (0x10)
16#define IRQ_VECTOR_BASE_ADDR ((EXCEPTION_VECTOR_BASE_ADDR) + 0x210)
17#define IRQ_VECTOR_END_ADDR ((EXCEPTION_VECTOR_BASE_ADDR) + 0x5f0)
18
19#define irq_canonicalize(irq) (irq)
20
21#define IRQ_TIMER (7) /* Timer IRQ number of SPCT6600 */
22
23extern void interrupt_exception_vector(void);
24
25#endif /* _ASM_SCORE_IRQ_H */
diff --git a/arch/score/include/asm/irq_regs.h b/arch/score/include/asm/irq_regs.h
new file mode 100644
index 000000000000..b8e881c9a69f
--- /dev/null
+++ b/arch/score/include/asm/irq_regs.h
@@ -0,0 +1,11 @@
1#ifndef _ASM_SCORE_IRQ_REGS_H
2#define _ASM_SCORE_IRQ_REGS_H
3
4#include <linux/thread_info.h>
5
6static inline struct pt_regs *get_irq_regs(void)
7{
8 return current_thread_info()->regs;
9}
10
11#endif /* _ASM_SCORE_IRQ_REGS_H */
diff --git a/arch/score/include/asm/irqflags.h b/arch/score/include/asm/irqflags.h
new file mode 100644
index 000000000000..690a6cae7294
--- /dev/null
+++ b/arch/score/include/asm/irqflags.h
@@ -0,0 +1,109 @@
1#ifndef _ASM_SCORE_IRQFLAGS_H
2#define _ASM_SCORE_IRQFLAGS_H
3
4#ifndef __ASSEMBLY__
5
6#define raw_local_irq_save(x) \
7{ \
8 __asm__ __volatile__( \
9 "mfcr r8, cr0;" \
10 "li r9, 0xfffffffe;" \
11 "nop;" \
12 "mv %0, r8;" \
13 "and r8, r8, r9;" \
14 "mtcr r8, cr0;" \
15 "nop;" \
16 "nop;" \
17 "nop;" \
18 "nop;" \
19 "nop;" \
20 : "=r" (x) \
21 : \
22 : "r8", "r9" \
23 ); \
24}
25
26#define raw_local_irq_restore(x) \
27{ \
28 __asm__ __volatile__( \
29 "mfcr r8, cr0;" \
30 "ldi r9, 0x1;" \
31 "and %0, %0, r9;" \
32 "or r8, r8, %0;" \
33 "mtcr r8, cr0;" \
34 "nop;" \
35 "nop;" \
36 "nop;" \
37 "nop;" \
38 "nop;" \
39 : \
40 : "r"(x) \
41 : "r8", "r9" \
42 ); \
43}
44
45#define raw_local_irq_enable(void) \
46{ \
47 __asm__ __volatile__( \
48 "mfcr\tr8,cr0;" \
49 "nop;" \
50 "nop;" \
51 "ori\tr8,0x1;" \
52 "mtcr\tr8,cr0;" \
53 "nop;" \
54 "nop;" \
55 "nop;" \
56 "nop;" \
57 "nop;" \
58 : \
59 : \
60 : "r8"); \
61}
62
63#define raw_local_irq_disable(void) \
64{ \
65 __asm__ __volatile__( \
66 "mfcr\tr8,cr0;" \
67 "nop;" \
68 "nop;" \
69 "srli\tr8,r8,1;" \
70 "slli\tr8,r8,1;" \
71 "mtcr\tr8,cr0;" \
72 "nop;" \
73 "nop;" \
74 "nop;" \
75 "nop;" \
76 "nop;" \
77 : \
78 : \
79 : "r8"); \
80}
81
82#define raw_local_save_flags(x) \
83{ \
84 __asm__ __volatile__( \
85 "mfcr r8, cr0;" \
86 "nop;" \
87 "nop;" \
88 "mv %0, r8;" \
89 "nop;" \
90 "nop;" \
91 "nop;" \
92 "nop;" \
93 "nop;" \
94 "ldi r9, 0x1;" \
95 "and %0, %0, r9;" \
96 : "=r" (x) \
97 : \
98 : "r8", "r9" \
99 ); \
100}
101
102static inline int raw_irqs_disabled_flags(unsigned long flags)
103{
104 return !(flags & 1);
105}
106
107#endif
108
109#endif /* _ASM_SCORE_IRQFLAGS_H */
diff --git a/arch/score/include/asm/kdebug.h b/arch/score/include/asm/kdebug.h
new file mode 100644
index 000000000000..a666e513f747
--- /dev/null
+++ b/arch/score/include/asm/kdebug.h
@@ -0,0 +1,6 @@
1#ifndef _ASM_SCORE_KDEBUG_H
2#define _ASM_SCORE_KDEBUG_H
3
4#include <asm-generic/kdebug.h>
5
6#endif /* _ASM_SCORE_KDEBUG_H */
diff --git a/arch/score/include/asm/kmap_types.h b/arch/score/include/asm/kmap_types.h
new file mode 100644
index 000000000000..6c46eb5077d3
--- /dev/null
+++ b/arch/score/include/asm/kmap_types.h
@@ -0,0 +1,6 @@
1#ifndef _ASM_SCORE_KMAP_TYPES_H
2#define _ASM_SCORE_KMAP_TYPES_H
3
4#include <asm-generic/kmap_types.h>
5
6#endif /* _ASM_SCORE_KMAP_TYPES_H */
diff --git a/arch/score/include/asm/linkage.h b/arch/score/include/asm/linkage.h
new file mode 100644
index 000000000000..2323a8ecf445
--- /dev/null
+++ b/arch/score/include/asm/linkage.h
@@ -0,0 +1,7 @@
1#ifndef _ASM_SCORE_LINKAGE_H
2#define _ASM_SCORE_LINKAGE_H
3
4#define __ALIGN .align 2
5#define __ALIGN_STR ".align 2"
6
7#endif /* _ASM_SCORE_LINKAGE_H */
diff --git a/arch/score/include/asm/local.h b/arch/score/include/asm/local.h
new file mode 100644
index 000000000000..7e02f13dbba8
--- /dev/null
+++ b/arch/score/include/asm/local.h
@@ -0,0 +1,6 @@
1#ifndef _ASM_SCORE_LOCAL_H
2#define _ASM_SCORE_LOCAL_H
3
4#include <asm-generic/local.h>
5
6#endif /* _ASM_SCORE_LOCAL_H */
diff --git a/arch/score/include/asm/mman.h b/arch/score/include/asm/mman.h
new file mode 100644
index 000000000000..84d85ddfed8d
--- /dev/null
+++ b/arch/score/include/asm/mman.h
@@ -0,0 +1,6 @@
1#ifndef _ASM_SCORE_MMAN_H
2#define _ASM_SCORE_MMAN_H
3
4#include <asm-generic/mman.h>
5
6#endif /* _ASM_SCORE_MMAN_H */
diff --git a/arch/score/include/asm/mmu.h b/arch/score/include/asm/mmu.h
new file mode 100644
index 000000000000..676828e4c10a
--- /dev/null
+++ b/arch/score/include/asm/mmu.h
@@ -0,0 +1,6 @@
1#ifndef _ASM_SCORE_MMU_H
2#define _ASM_SCORE_MMU_H
3
4typedef unsigned long mm_context_t;
5
6#endif /* _ASM_SCORE_MMU_H */
diff --git a/arch/score/include/asm/mmu_context.h b/arch/score/include/asm/mmu_context.h
new file mode 100644
index 000000000000..2644577c96e8
--- /dev/null
+++ b/arch/score/include/asm/mmu_context.h
@@ -0,0 +1,113 @@
1#ifndef _ASM_SCORE_MMU_CONTEXT_H
2#define _ASM_SCORE_MMU_CONTEXT_H
3
4#include <linux/errno.h>
5#include <linux/sched.h>
6#include <linux/slab.h>
7#include <asm-generic/mm_hooks.h>
8
9#include <asm/cacheflush.h>
10#include <asm/tlbflush.h>
11#include <asm/scoreregs.h>
12
13/*
14 * For the fast tlb miss handlers, we keep a per cpu array of pointers
15 * to the current pgd for each processor. Also, the proc. id is stuffed
16 * into the context register.
17 */
18extern unsigned long asid_cache;
19extern unsigned long pgd_current;
20
21#define TLBMISS_HANDLER_SETUP_PGD(pgd) (pgd_current = (unsigned long)(pgd))
22
23#define TLBMISS_HANDLER_SETUP() \
24do { \
25 write_c0_context(0); \
26 TLBMISS_HANDLER_SETUP_PGD(swapper_pg_dir) \
27} while (0)
28
29/*
30 * All unused by hardware upper bits will be considered
31 * as a software asid extension.
32 */
33#define ASID_VERSION_MASK 0xfffff000
34#define ASID_FIRST_VERSION 0x1000
35
36/* PEVN --------- VPN ---------- --ASID--- -NA- */
37/* binary: 0000 0000 0000 0000 0000 0000 0001 0000 */
38/* binary: 0000 0000 0000 0000 0000 1111 1111 0000 */
39#define ASID_INC 0x10
40#define ASID_MASK 0xff0
41
42static inline void enter_lazy_tlb(struct mm_struct *mm,
43 struct task_struct *tsk)
44{}
45
46static inline void
47get_new_mmu_context(struct mm_struct *mm)
48{
49 unsigned long asid = asid_cache + ASID_INC;
50
51 if (!(asid & ASID_MASK)) {
52 local_flush_tlb_all(); /* start new asid cycle */
53 if (!asid) /* fix version if needed */
54 asid = ASID_FIRST_VERSION;
55 }
56
57 mm->context = asid;
58 asid_cache = asid;
59}
60
61/*
62 * Initialize the context related info for a new mm_struct
63 * instance.
64 */
65static inline int
66init_new_context(struct task_struct *tsk, struct mm_struct *mm)
67{
68 mm->context = 0;
69 return 0;
70}
71
72static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
73 struct task_struct *tsk)
74{
75 unsigned long flags;
76
77 local_irq_save(flags);
78 if ((next->context ^ asid_cache) & ASID_VERSION_MASK)
79 get_new_mmu_context(next);
80
81 pevn_set(next->context);
82 TLBMISS_HANDLER_SETUP_PGD(next->pgd);
83 local_irq_restore(flags);
84}
85
86/*
87 * Destroy context related info for an mm_struct that is about
88 * to be put to rest.
89 */
90static inline void destroy_context(struct mm_struct *mm)
91{}
92
93static inline void
94deactivate_mm(struct task_struct *task, struct mm_struct *mm)
95{}
96
97/*
98 * After we have set current->mm to a new value, this activates
99 * the context for the new mm so we see the new mappings.
100 */
101static inline void
102activate_mm(struct mm_struct *prev, struct mm_struct *next)
103{
104 unsigned long flags;
105
106 local_irq_save(flags);
107 get_new_mmu_context(next);
108 pevn_set(next->context);
109 TLBMISS_HANDLER_SETUP_PGD(next->pgd);
110 local_irq_restore(flags);
111}
112
113#endif /* _ASM_SCORE_MMU_CONTEXT_H */
diff --git a/arch/score/include/asm/module.h b/arch/score/include/asm/module.h
new file mode 100644
index 000000000000..f0b5dc0bd023
--- /dev/null
+++ b/arch/score/include/asm/module.h
@@ -0,0 +1,39 @@
1#ifndef _ASM_SCORE_MODULE_H
2#define _ASM_SCORE_MODULE_H
3
4#include <linux/list.h>
5#include <asm/uaccess.h>
6
7struct mod_arch_specific {
8 /* Data Bus Error exception tables */
9 struct list_head dbe_list;
10 const struct exception_table_entry *dbe_start;
11 const struct exception_table_entry *dbe_end;
12};
13
14typedef uint8_t Elf64_Byte; /* Type for a 8-bit quantity. */
15
16#define Elf_Shdr Elf32_Shdr
17#define Elf_Sym Elf32_Sym
18#define Elf_Ehdr Elf32_Ehdr
19#define Elf_Addr Elf32_Addr
20
21/* Given an address, look for it in the exception tables. */
22#ifdef CONFIG_MODULES
23const struct exception_table_entry *search_module_dbetables(unsigned long addr);
24#else
25static inline const struct exception_table_entry
26*search_module_dbetables(unsigned long addr)
27{
28 return NULL;
29}
30#endif
31
32#define MODULE_PROC_FAMILY "SCORE7"
33#define MODULE_KERNEL_TYPE "32BIT "
34#define MODULE_KERNEL_SMTC ""
35
36#define MODULE_ARCH_VERMAGIC \
37 MODULE_PROC_FAMILY MODULE_KERNEL_TYPE MODULE_KERNEL_SMTC
38
39#endif /* _ASM_SCORE_MODULE_H */
diff --git a/arch/score/include/asm/msgbuf.h b/arch/score/include/asm/msgbuf.h
new file mode 100644
index 000000000000..7506721e29fa
--- /dev/null
+++ b/arch/score/include/asm/msgbuf.h
@@ -0,0 +1,6 @@
1#ifndef _ASM_SCORE_MSGBUF_H
2#define _ASM_SCORE_MSGBUF_H
3
4#include <asm-generic/msgbuf.h>
5
6#endif /* _ASM_SCORE_MSGBUF_H */
diff --git a/arch/score/include/asm/mutex.h b/arch/score/include/asm/mutex.h
new file mode 100644
index 000000000000..10d48fe4db97
--- /dev/null
+++ b/arch/score/include/asm/mutex.h
@@ -0,0 +1,6 @@
1#ifndef _ASM_SCORE_MUTEX_H
2#define _ASM_SCORE_MUTEX_H
3
4#include <asm-generic/mutex-dec.h>
5
6#endif /* _ASM_SCORE_MUTEX_H */
diff --git a/arch/score/include/asm/page.h b/arch/score/include/asm/page.h
new file mode 100644
index 000000000000..ee5821042fcc
--- /dev/null
+++ b/arch/score/include/asm/page.h
@@ -0,0 +1,92 @@
1#ifndef _ASM_SCORE_PAGE_H
2#define _ASM_SCORE_PAGE_H
3
4#include <linux/pfn.h>
5
6/* PAGE_SHIFT determines the page size */
7#define PAGE_SHIFT (12)
8#define PAGE_SIZE (1UL << PAGE_SHIFT)
9#define PAGE_MASK (~(PAGE_SIZE-1))
10
11#ifdef __KERNEL__
12
13#ifndef __ASSEMBLY__
14
15#define PAGE_UP(addr) (((addr)+((PAGE_SIZE)-1))&(~((PAGE_SIZE)-1)))
16#define PAGE_DOWN(addr) ((addr)&(~((PAGE_SIZE)-1)))
17
18/* align addr on a size boundary - adjust address up/down if needed */
19#define _ALIGN_UP(addr, size) (((addr)+((size)-1))&(~((size)-1)))
20#define _ALIGN_DOWN(addr, size) ((addr)&(~((size)-1)))
21
22/* align addr on a size boundary - adjust address up if needed */
23#define _ALIGN(addr, size) _ALIGN_UP(addr, size)
24
25/*
26 * PAGE_OFFSET -- the first address of the first page of memory. When not
27 * using MMU this corresponds to the first free page in physical memory (aligned
28 * on a page boundary).
29 */
30#define PAGE_OFFSET (0xA0000000UL)
31
32#define clear_page(pgaddr) memset((pgaddr), 0, PAGE_SIZE)
33#define copy_page(to, from) memcpy((to), (from), PAGE_SIZE)
34
35#define clear_user_page(pgaddr, vaddr, page) memset((pgaddr), 0, PAGE_SIZE)
36#define copy_user_page(vto, vfrom, vaddr, topg) \
37 memcpy((vto), (vfrom), PAGE_SIZE)
38
39/*
40 * These are used to make use of C type-checking..
41 */
42
43typedef struct { unsigned long pte; } pte_t; /* page table entry */
44typedef struct { unsigned long pgd; } pgd_t; /* PGD table entry */
45typedef struct { unsigned long pgprot; } pgprot_t;
46typedef struct page *pgtable_t;
47
48#define pte_val(x) ((x).pte)
49#define pgd_val(x) ((x).pgd)
50#define pgprot_val(x) ((x).pgprot)
51
52#define __pte(x) ((pte_t) { (x) })
53#define __pgd(x) ((pgd_t) { (x) })
54#define __pgprot(x) ((pgprot_t) { (x) })
55
56extern unsigned long max_low_pfn;
57extern unsigned long min_low_pfn;
58extern unsigned long max_pfn;
59
60#define __pa(x) ((unsigned long)(x) - PAGE_OFFSET)
61#define __va(x) ((void *)((unsigned long) (x) + PAGE_OFFSET))
62
63#define phys_to_pfn(phys) (PFN_DOWN(phys))
64#define pfn_to_phys(pfn) (PFN_PHYS(pfn))
65
66#define virt_to_pfn(vaddr) (phys_to_pfn((__pa(vaddr))))
67#define pfn_to_virt(pfn) __va(pfn_to_phys((pfn)))
68
69#define virt_to_page(vaddr) (pfn_to_page(virt_to_pfn(vaddr)))
70#define page_to_virt(page) (pfn_to_virt(page_to_pfn(page)))
71
72#define page_to_phys(page) (pfn_to_phys(page_to_pfn(page)))
73#define page_to_bus(page) (page_to_phys(page))
74#define phys_to_page(paddr) (pfn_to_page(phys_to_pfn(paddr)))
75
76#define pfn_valid(pfn) ((pfn) >= min_low_pfn && (pfn) < max_mapnr)
77
78#define ARCH_PFN_OFFSET (PAGE_OFFSET >> PAGE_SHIFT)
79
80#endif /* __ASSEMBLY__ */
81
82#define virt_addr_valid(vaddr) (pfn_valid(virt_to_pfn(vaddr)))
83
84#endif /* __KERNEL__ */
85
86#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
87 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
88
89#include <asm-generic/memory_model.h>
90#include <asm-generic/getorder.h>
91
92#endif /* _ASM_SCORE_PAGE_H */
diff --git a/arch/score/include/asm/param.h b/arch/score/include/asm/param.h
new file mode 100644
index 000000000000..916b8690b6aa
--- /dev/null
+++ b/arch/score/include/asm/param.h
@@ -0,0 +1,6 @@
1#ifndef _ASM_SCORE_PARAM_H
2#define _ASM_SCORE_PARAM_H
3
4#include <asm-generic/param.h>
5
6#endif /* _ASM_SCORE_PARAM_H */
diff --git a/arch/score/include/asm/pci.h b/arch/score/include/asm/pci.h
new file mode 100644
index 000000000000..3f3cfd82549c
--- /dev/null
+++ b/arch/score/include/asm/pci.h
@@ -0,0 +1,4 @@
1#ifndef _ASM_SCORE_PCI_H
2#define _ASM_SCORE_PCI_H
3
4#endif /* _ASM_SCORE_PCI_H */
diff --git a/arch/score/include/asm/percpu.h b/arch/score/include/asm/percpu.h
new file mode 100644
index 000000000000..e7bd4e05b475
--- /dev/null
+++ b/arch/score/include/asm/percpu.h
@@ -0,0 +1,6 @@
1#ifndef _ASM_SCORE_PERCPU_H
2#define _ASM_SCORE_PERCPU_H
3
4#include <asm-generic/percpu.h>
5
6#endif /* _ASM_SCORE_PERCPU_H */
diff --git a/arch/score/include/asm/pgalloc.h b/arch/score/include/asm/pgalloc.h
new file mode 100644
index 000000000000..059a61b7071b
--- /dev/null
+++ b/arch/score/include/asm/pgalloc.h
@@ -0,0 +1,83 @@
1#ifndef _ASM_SCORE_PGALLOC_H
2#define _ASM_SCORE_PGALLOC_H
3
4#include <linux/mm.h>
5
6static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd,
7 pte_t *pte)
8{
9 set_pmd(pmd, __pmd((unsigned long)pte));
10}
11
12static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
13 pgtable_t pte)
14{
15 set_pmd(pmd, __pmd((unsigned long)page_address(pte)));
16}
17
18#define pmd_pgtable(pmd) pmd_page(pmd)
19
20static inline pgd_t *pgd_alloc(struct mm_struct *mm)
21{
22 pgd_t *ret, *init;
23
24 ret = (pgd_t *) __get_free_pages(GFP_KERNEL, PGD_ORDER);
25 if (ret) {
26 init = pgd_offset(&init_mm, 0UL);
27 pgd_init((unsigned long)ret);
28 memcpy(ret + USER_PTRS_PER_PGD, init + USER_PTRS_PER_PGD,
29 (PTRS_PER_PGD - USER_PTRS_PER_PGD) * sizeof(pgd_t));
30 }
31
32 return ret;
33}
34
35static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
36{
37 free_pages((unsigned long)pgd, PGD_ORDER);
38}
39
40static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
41 unsigned long address)
42{
43 pte_t *pte;
44
45 pte = (pte_t *) __get_free_pages(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO,
46 PTE_ORDER);
47
48 return pte;
49}
50
51static inline struct page *pte_alloc_one(struct mm_struct *mm,
52 unsigned long address)
53{
54 struct page *pte;
55
56 pte = alloc_pages(GFP_KERNEL | __GFP_REPEAT, PTE_ORDER);
57 if (pte) {
58 clear_highpage(pte);
59 pgtable_page_ctor(pte);
60 }
61 return pte;
62}
63
64static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
65{
66 free_pages((unsigned long)pte, PTE_ORDER);
67}
68
69static inline void pte_free(struct mm_struct *mm, pgtable_t pte)
70{
71 pgtable_page_dtor(pte);
72 __free_pages(pte, PTE_ORDER);
73}
74
75#define __pte_free_tlb(tlb, pte, buf) \
76do { \
77 pgtable_page_dtor(pte); \
78 tlb_remove_page((tlb), pte); \
79} while (0)
80
81#define check_pgt_cache() do {} while (0)
82
83#endif /* _ASM_SCORE_PGALLOC_H */
diff --git a/arch/score/include/asm/pgtable-bits.h b/arch/score/include/asm/pgtable-bits.h
new file mode 100644
index 000000000000..7d65a96a82e5
--- /dev/null
+++ b/arch/score/include/asm/pgtable-bits.h
@@ -0,0 +1,25 @@
1#ifndef _ASM_SCORE_PGTABLE_BITS_H
2#define _ASM_SCORE_PGTABLE_BITS_H
3
4#define _PAGE_ACCESSED (1<<5) /* implemented in software */
5#define _PAGE_READ (1<<6) /* implemented in software */
6#define _PAGE_WRITE (1<<7) /* implemented in software */
7#define _PAGE_PRESENT (1<<9) /* implemented in software */
8#define _PAGE_MODIFIED (1<<10) /* implemented in software */
9#define _PAGE_FILE (1<<10)
10
11#define _PAGE_GLOBAL (1<<0)
12#define _PAGE_VALID (1<<1)
13#define _PAGE_SILENT_READ (1<<1) /* synonym */
14#define _PAGE_DIRTY (1<<2) /* Write bit */
15#define _PAGE_SILENT_WRITE (1<<2)
16#define _PAGE_CACHE (1<<3) /* cache */
17#define _CACHE_MASK (1<<3)
18#define _PAGE_BUFFERABLE (1<<4) /*Fallow Spec. */
19
20#define __READABLE (_PAGE_READ | _PAGE_SILENT_READ | _PAGE_ACCESSED)
21#define __WRITEABLE (_PAGE_WRITE | _PAGE_SILENT_WRITE | _PAGE_MODIFIED)
22#define _PAGE_CHG_MASK \
23 (PAGE_MASK | _PAGE_ACCESSED | _PAGE_MODIFIED | _PAGE_CACHE)
24
25#endif /* _ASM_SCORE_PGTABLE_BITS_H */
diff --git a/arch/score/include/asm/pgtable.h b/arch/score/include/asm/pgtable.h
new file mode 100644
index 000000000000..674934b40170
--- /dev/null
+++ b/arch/score/include/asm/pgtable.h
@@ -0,0 +1,287 @@
1#ifndef _ASM_SCORE_PGTABLE_H
2#define _ASM_SCORE_PGTABLE_H
3
4#include <linux/const.h>
5#include <asm-generic/pgtable-nopmd.h>
6
7#include <asm/fixmap.h>
8#include <asm/setup.h>
9#include <asm/pgtable-bits.h>
10
11extern void load_pgd(unsigned long pg_dir);
12extern pte_t invalid_pte_table[PAGE_SIZE/sizeof(pte_t)];
13
14/* PGDIR_SHIFT determines what a third-level page table entry can map */
15#define PGDIR_SHIFT 22
16#define PGDIR_SIZE (_AC(1, UL) << PGDIR_SHIFT)
17#define PGDIR_MASK (~(PGDIR_SIZE - 1))
18
19/*
20 * Entries per page directory level: we use two-level, so
21 * we don't really have any PUD/PMD directory physically.
22 */
23#define PGD_ORDER 0
24#define PTE_ORDER 0
25
26#define PTRS_PER_PGD 1024
27#define PTRS_PER_PTE 1024
28
29#define USER_PTRS_PER_PGD (0x80000000UL/PGDIR_SIZE)
30#define FIRST_USER_ADDRESS 0
31
32#define VMALLOC_START (0xc0000000UL)
33
34#define PKMAP_BASE (0xfd000000UL)
35
36#define VMALLOC_END (FIXADDR_START - 2*PAGE_SIZE)
37
38#define pte_ERROR(e) \
39 printk(KERN_ERR "%s:%d: bad pte %08lx.\n", \
40 __FILE__, __LINE__, pte_val(e))
41#define pgd_ERROR(e) \
42 printk(KERN_ERR "%s:%d: bad pgd %08lx.\n", \
43 __FILE__, __LINE__, pgd_val(e))
44
45/*
46 * Empty pgd/pmd entries point to the invalid_pte_table.
47 */
48static inline int pmd_none(pmd_t pmd)
49{
50 return pmd_val(pmd) == (unsigned long) invalid_pte_table;
51}
52
53#define pmd_bad(pmd) (pmd_val(pmd) & ~PAGE_MASK)
54
55static inline int pmd_present(pmd_t pmd)
56{
57 return pmd_val(pmd) != (unsigned long) invalid_pte_table;
58}
59
60static inline void pmd_clear(pmd_t *pmdp)
61{
62 pmd_val(*pmdp) = ((unsigned long) invalid_pte_table);
63}
64
65#define pte_page(x) pfn_to_page(pte_pfn(x))
66#define pte_pfn(x) ((unsigned long)((x).pte >> PAGE_SHIFT))
67#define pfn_pte(pfn, prot) \
68 __pte(((unsigned long long)(pfn) << PAGE_SHIFT) | pgprot_val(prot))
69
70#define __pgd_offset(address) pgd_index(address)
71#define __pud_offset(address) (((address) >> PUD_SHIFT) & (PTRS_PER_PUD-1))
72#define __pmd_offset(address) (((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1))
73
74/* to find an entry in a kernel page-table-directory */
75#define pgd_offset_k(address) pgd_offset(&init_mm, address)
76#define pgd_index(address) (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD-1))
77
78/* to find an entry in a page-table-directory */
79#define pgd_offset(mm, addr) ((mm)->pgd + pgd_index(addr))
80
81/* Find an entry in the third-level page table.. */
82#define __pte_offset(address) \
83 (((address) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
84#define pte_offset(dir, address) \
85 ((pte_t *) pmd_page_vaddr(*(dir)) + __pte_offset(address))
86#define pte_offset_kernel(dir, address) \
87 ((pte_t *) pmd_page_vaddr(*(dir)) + __pte_offset(address))
88
89#define pte_offset_map(dir, address) \
90 ((pte_t *)page_address(pmd_page(*(dir))) + __pte_offset(address))
91#define pte_offset_map_nested(dir, address) \
92 ((pte_t *)page_address(pmd_page(*(dir))) + __pte_offset(address))
93#define pte_unmap(pte) ((void)(pte))
94#define pte_unmap_nested(pte) ((void)(pte))
95
96/*
97 * Bits 9(_PAGE_PRESENT) and 10(_PAGE_FILE)are taken,
98 * split up 30 bits of offset into this range:
99 */
100#define PTE_FILE_MAX_BITS 30
101#define pte_to_pgoff(_pte) \
102 (((_pte).pte & 0x1ff) | (((_pte).pte >> 11) << 9))
103#define pgoff_to_pte(off) \
104 ((pte_t) {((off) & 0x1ff) | (((off) >> 9) << 11) | _PAGE_FILE})
105#define __pte_to_swp_entry(pte) \
106 ((swp_entry_t) { pte_val(pte)})
107#define __swp_entry_to_pte(x) ((pte_t) {(x).val})
108
109#define pmd_phys(pmd) __pa((void *)pmd_val(pmd))
110#define pmd_page(pmd) (pfn_to_page(pmd_phys(pmd) >> PAGE_SHIFT))
111#define mk_pte(page, prot) pfn_pte(page_to_pfn(page), prot)
112static inline pte_t pte_mkspecial(pte_t pte) { return pte; }
113
114#define set_pte(pteptr, pteval) (*(pteptr) = pteval)
115#define set_pte_at(mm, addr, ptep, pteval) set_pte(ptep, pteval)
116#define pte_clear(mm, addr, xp) \
117 do { set_pte_at(mm, addr, xp, __pte(0)); } while (0)
118
119#define io_remap_pfn_range(vma, vaddr, pfn, size, prot) \
120 remap_pfn_range(vma, vaddr, pfn, size, prot)
121
122/*
123 * The "pgd_xxx()" functions here are trivial for a folded two-level
124 * setup: the pgd is never bad, and a pmd always exists (as it's folded
125 * into the pgd entry)
126 */
127#define pgd_present(pgd) (1)
128#define pgd_none(pgd) (0)
129#define pgd_bad(pgd) (0)
130#define pgd_clear(pgdp) do { } while (0)
131
132#define kern_addr_valid(addr) (1)
133#define pmd_page_vaddr(pmd) pmd_val(pmd)
134
135#define pte_none(pte) (!(pte_val(pte) & ~_PAGE_GLOBAL))
136#define pte_present(pte) (pte_val(pte) & _PAGE_PRESENT)
137
138#define PAGE_NONE __pgprot(_PAGE_PRESENT | _PAGE_CACHE)
139#define PAGE_SHARED __pgprot(_PAGE_PRESENT | _PAGE_READ | _PAGE_WRITE | \
140 _PAGE_CACHE)
141#define PAGE_COPY __pgprot(_PAGE_PRESENT | _PAGE_READ | _PAGE_CACHE)
142#define PAGE_READONLY __pgprot(_PAGE_PRESENT | _PAGE_READ | _PAGE_CACHE)
143#define PAGE_KERNEL __pgprot(_PAGE_PRESENT | __READABLE | __WRITEABLE | \
144 _PAGE_GLOBAL | _PAGE_CACHE)
145#define PAGE_KERNEL_UNCACHED __pgprot(_PAGE_PRESENT | __READABLE | \
146 __WRITEABLE | _PAGE_GLOBAL & ~_PAGE_CACHE)
147
148#define __P000 PAGE_NONE
149#define __P001 PAGE_READONLY
150#define __P010 PAGE_COPY
151#define __P011 PAGE_COPY
152#define __P100 PAGE_READONLY
153#define __P101 PAGE_READONLY
154#define __P110 PAGE_COPY
155#define __P111 PAGE_COPY
156
157#define __S000 PAGE_NONE
158#define __S001 PAGE_READONLY
159#define __S010 PAGE_SHARED
160#define __S011 PAGE_SHARED
161#define __S100 PAGE_READONLY
162#define __S101 PAGE_READONLY
163#define __S110 PAGE_SHARED
164#define __S111 PAGE_SHARED
165
166#define pgprot_noncached pgprot_noncached
167
168static inline pgprot_t pgprot_noncached(pgprot_t _prot)
169{
170 unsigned long prot = pgprot_val(_prot);
171
172 prot = (prot & ~_CACHE_MASK);
173
174 return __pgprot(prot);
175}
176
177#define __swp_type(x) ((x).val & 0x1f)
178#define __swp_offset(x) ((x).val >> 11)
179#define __swp_entry(type, offset) ((swp_entry_t){(type) | ((offset) << 11)})
180
181extern unsigned long empty_zero_page;
182extern unsigned long zero_page_mask;
183
184#define ZERO_PAGE(vaddr) \
185 (virt_to_page((void *)(empty_zero_page + \
186 (((unsigned long)(vaddr)) & zero_page_mask))))
187
188#define pgtable_cache_init() do {} while (0)
189
190#define arch_enter_lazy_cpu_mode() do {} while (0)
191
192static inline int pte_write(pte_t pte)
193{
194 return pte_val(pte) & _PAGE_WRITE;
195}
196
197static inline int pte_dirty(pte_t pte)
198{
199 return pte_val(pte) & _PAGE_MODIFIED;
200}
201
202static inline int pte_young(pte_t pte)
203{
204 return pte_val(pte) & _PAGE_ACCESSED;
205}
206
207static inline int pte_file(pte_t pte)
208{
209 return pte_val(pte) & _PAGE_FILE;
210}
211
212#define pte_special(pte) (0)
213
214static inline pte_t pte_wrprotect(pte_t pte)
215{
216 pte_val(pte) &= ~(_PAGE_WRITE | _PAGE_SILENT_WRITE);
217 return pte;
218}
219
220static inline pte_t pte_mkclean(pte_t pte)
221{
222 pte_val(pte) &= ~(_PAGE_MODIFIED|_PAGE_SILENT_WRITE);
223 return pte;
224}
225
226static inline pte_t pte_mkold(pte_t pte)
227{
228 pte_val(pte) &= ~(_PAGE_ACCESSED|_PAGE_SILENT_READ);
229 return pte;
230}
231
232static inline pte_t pte_mkwrite(pte_t pte)
233{
234 pte_val(pte) |= _PAGE_WRITE;
235 if (pte_val(pte) & _PAGE_MODIFIED)
236 pte_val(pte) |= _PAGE_SILENT_WRITE;
237 return pte;
238}
239
240static inline pte_t pte_mkdirty(pte_t pte)
241{
242 pte_val(pte) |= _PAGE_MODIFIED;
243 if (pte_val(pte) & _PAGE_WRITE)
244 pte_val(pte) |= _PAGE_SILENT_WRITE;
245 return pte;
246}
247
248static inline pte_t pte_mkyoung(pte_t pte)
249{
250 pte_val(pte) |= _PAGE_ACCESSED;
251 if (pte_val(pte) & _PAGE_READ)
252 pte_val(pte) |= _PAGE_SILENT_READ;
253 return pte;
254}
255
256#define set_pmd(pmdptr, pmdval) \
257 do { *(pmdptr) = (pmdval); } while (0)
258#define pte_present(pte) (pte_val(pte) & _PAGE_PRESENT)
259
260extern unsigned long pgd_current;
261extern pgd_t swapper_pg_dir[PTRS_PER_PGD];
262extern void paging_init(void);
263
264static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
265{
266 return __pte((pte_val(pte) & _PAGE_CHG_MASK) | pgprot_val(newprot));
267}
268
269extern void __update_tlb(struct vm_area_struct *vma,
270 unsigned long address, pte_t pte);
271extern void __update_cache(struct vm_area_struct *vma,
272 unsigned long address, pte_t pte);
273
274static inline void update_mmu_cache(struct vm_area_struct *vma,
275 unsigned long address, pte_t pte)
276{
277 __update_tlb(vma, address, pte);
278 __update_cache(vma, address, pte);
279}
280
281#ifndef __ASSEMBLY__
282#include <asm-generic/pgtable.h>
283
284void setup_memory(void);
285#endif /* __ASSEMBLY__ */
286
287#endif /* _ASM_SCORE_PGTABLE_H */
diff --git a/arch/score/include/asm/poll.h b/arch/score/include/asm/poll.h
new file mode 100644
index 000000000000..18532db02861
--- /dev/null
+++ b/arch/score/include/asm/poll.h
@@ -0,0 +1,6 @@
1#ifndef _ASM_SCORE_POLL_H
2#define _ASM_SCORE_POLL_H
3
4#include <asm-generic/poll.h>
5
6#endif /* _ASM_SCORE_POLL_H */
diff --git a/arch/score/include/asm/posix_types.h b/arch/score/include/asm/posix_types.h
new file mode 100644
index 000000000000..b88acf80048a
--- /dev/null
+++ b/arch/score/include/asm/posix_types.h
@@ -0,0 +1,6 @@
1#ifndef _ASM_SCORE_POSIX_TYPES_H
2#define _ASM_SCORE_POSIX_TYPES_H
3
4#include <asm-generic/posix_types.h>
5
6#endif /* _ASM_SCORE_POSIX_TYPES_H */
diff --git a/arch/score/include/asm/processor.h b/arch/score/include/asm/processor.h
new file mode 100644
index 000000000000..7e22f216d771
--- /dev/null
+++ b/arch/score/include/asm/processor.h
@@ -0,0 +1,106 @@
1#ifndef _ASM_SCORE_PROCESSOR_H
2#define _ASM_SCORE_PROCESSOR_H
3
4#include <linux/cpumask.h>
5#include <linux/threads.h>
6
7#include <asm/segment.h>
8
9struct task_struct;
10
11/*
12 * System setup and hardware flags..
13 */
14extern void (*cpu_wait)(void);
15
16extern long kernel_thread(int (*fn)(void *), void *arg, unsigned long flags);
17extern unsigned long thread_saved_pc(struct task_struct *tsk);
18extern void start_thread(struct pt_regs *regs,
19 unsigned long pc, unsigned long sp);
20extern unsigned long get_wchan(struct task_struct *p);
21
22/*
23 * Return current * instruction pointer ("program counter").
24 */
25#define current_text_addr() ({ __label__ _l; _l: &&_l; })
26
27#define cpu_relax() barrier()
28#define release_thread(thread) do {} while (0)
29#define prepare_to_copy(tsk) do {} while (0)
30
31/*
32 * User space process size: 2GB. This is hardcoded into a few places,
33 * so don't change it unless you know what you are doing.
34 */
35#define TASK_SIZE 0x7fff8000UL
36
37/*
38 * This decides where the kernel will search for a free chunk of vm
39 * space during mmap's.
40 */
41#define TASK_UNMAPPED_BASE ((TASK_SIZE / 3) & ~(PAGE_SIZE))
42
43#ifdef __KERNEL__
44#define STACK_TOP TASK_SIZE
45#define STACK_TOP_MAX TASK_SIZE
46#endif
47
48/*
49 * If you change thread_struct remember to change the #defines below too!
50 */
51struct thread_struct {
52 unsigned long reg0, reg2, reg3;
53 unsigned long reg12, reg13, reg14, reg15, reg16;
54 unsigned long reg17, reg18, reg19, reg20, reg21;
55
56 unsigned long cp0_psr;
57 unsigned long cp0_ema; /* Last user fault */
58 unsigned long cp0_badvaddr; /* Last user fault */
59 unsigned long cp0_baduaddr; /* Last kernel fault accessing USEG */
60 unsigned long error_code;
61 unsigned long trap_no;
62
63 unsigned long mflags;
64 unsigned long reg29;
65
66 unsigned long single_step;
67 unsigned long ss_nextcnt;
68
69 unsigned long insn1_type;
70 unsigned long addr1;
71 unsigned long insn1;
72
73 unsigned long insn2_type;
74 unsigned long addr2;
75 unsigned long insn2;
76
77 mm_segment_t current_ds;
78};
79
80#define INIT_THREAD { \
81 .reg0 = 0, \
82 .reg2 = 0, \
83 .reg3 = 0, \
84 .reg12 = 0, \
85 .reg13 = 0, \
86 .reg14 = 0, \
87 .reg15 = 0, \
88 .reg16 = 0, \
89 .reg17 = 0, \
90 .reg18 = 0, \
91 .reg19 = 0, \
92 .reg20 = 0, \
93 .reg21 = 0, \
94 .cp0_psr = 0, \
95 .error_code = 0, \
96 .trap_no = 0, \
97}
98
99#define kstk_tos(tsk) \
100 ((unsigned long)task_stack_page(tsk) + THREAD_SIZE - 32)
101#define task_pt_regs(tsk) ((struct pt_regs *)kstk_tos(tsk) - 1)
102
103#define KSTK_EIP(tsk) (task_pt_regs(tsk)->cp0_epc)
104#define KSTK_ESP(tsk) (task_pt_regs(tsk)->regs[29])
105
106#endif /* _ASM_SCORE_PROCESSOR_H */
diff --git a/arch/score/include/asm/ptrace.h b/arch/score/include/asm/ptrace.h
new file mode 100644
index 000000000000..d40e691f23e2
--- /dev/null
+++ b/arch/score/include/asm/ptrace.h
@@ -0,0 +1,97 @@
1#ifndef _ASM_SCORE_PTRACE_H
2#define _ASM_SCORE_PTRACE_H
3
4#define PTRACE_GETREGS 12
5#define PTRACE_SETREGS 13
6
7#define PC 32
8#define CONDITION 33
9#define ECR 34
10#define EMA 35
11#define CEH 36
12#define CEL 37
13#define COUNTER 38
14#define LDCR 39
15#define STCR 40
16#define PSR 41
17
18#define SINGLESTEP16_INSN 0x7006
19#define SINGLESTEP32_INSN 0x840C8000
20#define BREAKPOINT16_INSN 0x7002 /* work on SPG300 */
21#define BREAKPOINT32_INSN 0x84048000 /* work on SPG300 */
22
23/* Define instruction mask */
24#define INSN32_MASK 0x80008000
25
26#define J32 0x88008000 /* 1_00010_0000000000_1_000000000000000 */
27#define J32M 0xFC008000 /* 1_11111_0000000000_1_000000000000000 */
28
29#define B32 0x90008000 /* 1_00100_0000000000_1_000000000000000 */
30#define B32M 0xFC008000
31#define BL32 0x90008001 /* 1_00100_0000000000_1_000000000000001 */
32#define BL32M B32
33#define BR32 0x80008008 /* 1_00000_0000000000_1_00000000_000100_0 */
34#define BR32M 0xFFE0807E
35#define BRL32 0x80008009 /* 1_00000_0000000000_1_00000000_000100_1 */
36#define BRL32M BR32M
37
38#define B32_SET (J32 | B32 | BL32 | BR32 | BRL32)
39
40#define J16 0x3000 /* 0_011_....... */
41#define J16M 0xF000
42#define B16 0x4000 /* 0_100_....... */
43#define B16M 0xF000
44#define BR16 0x0004 /* 0_000.......0100 */
45#define BR16M 0xF00F
46#define B16_SET (J16 | B16 | BR16)
47
48
49/*
50 * This struct defines the way the registers are stored on the stack during a
51 * system call/exception. As usual the registers k0/k1 aren't being saved.
52 */
53struct pt_regs {
54 unsigned long pad0[6]; /* stack arguments */
55 unsigned long orig_r4;
56 unsigned long orig_r7;
57 long is_syscall;
58
59 unsigned long regs[32];
60
61 unsigned long cel;
62 unsigned long ceh;
63
64 unsigned long sr0; /* cnt */
65 unsigned long sr1; /* lcr */
66 unsigned long sr2; /* scr */
67
68 unsigned long cp0_epc;
69 unsigned long cp0_ema;
70 unsigned long cp0_psr;
71 unsigned long cp0_ecr;
72 unsigned long cp0_condition;
73};
74
75#ifdef __KERNEL__
76
77struct task_struct;
78
79/*
80 * Does the process account for user or for system time?
81 */
82#define user_mode(regs) ((regs->cp0_psr & 8) == 8)
83
84#define instruction_pointer(regs) ((unsigned long)(regs)->cp0_epc)
85#define profile_pc(regs) instruction_pointer(regs)
86
87extern void do_syscall_trace(struct pt_regs *regs, int entryexit);
88extern int read_tsk_long(struct task_struct *, unsigned long, unsigned long *);
89extern int read_tsk_short(struct task_struct *, unsigned long,
90 unsigned short *);
91
92#define arch_has_single_step() (1)
93extern void user_enable_single_step(struct task_struct *);
94extern void user_disable_single_step(struct task_struct *);
95#endif /* __KERNEL__ */
96
97#endif /* _ASM_SCORE_PTRACE_H */
diff --git a/arch/score/include/asm/resource.h b/arch/score/include/asm/resource.h
new file mode 100644
index 000000000000..9ce22bc7b475
--- /dev/null
+++ b/arch/score/include/asm/resource.h
@@ -0,0 +1,6 @@
1#ifndef _ASM_SCORE_RESOURCE_H
2#define _ASM_SCORE_RESOURCE_H
3
4#include <asm-generic/resource.h>
5
6#endif /* _ASM_SCORE_RESOURCE_H */
diff --git a/arch/score/include/asm/scatterlist.h b/arch/score/include/asm/scatterlist.h
new file mode 100644
index 000000000000..9f533b8362c7
--- /dev/null
+++ b/arch/score/include/asm/scatterlist.h
@@ -0,0 +1,6 @@
1#ifndef _ASM_SCORE_SCATTERLIST_H
2#define _ASM_SCORE_SCATTERLIST_H
3
4#include <asm-generic/scatterlist.h>
5
6#endif /* _ASM_SCORE_SCATTERLIST_H */
diff --git a/arch/score/include/asm/scoreregs.h b/arch/score/include/asm/scoreregs.h
new file mode 100644
index 000000000000..d0ad29204518
--- /dev/null
+++ b/arch/score/include/asm/scoreregs.h
@@ -0,0 +1,51 @@
1#ifndef _ASM_SCORE_SCOREREGS_H
2#define _ASM_SCORE_SCOREREGS_H
3
4#include <linux/linkage.h>
5
6/* TIMER register */
7#define TIME0BASE 0x96080000
8#define P_TIMER0_CTRL (TIME0BASE + 0x00)
9#define P_TIMER0_CPP_CTRL (TIME0BASE + 0x04)
10#define P_TIMER0_PRELOAD (TIME0BASE + 0x08)
11#define P_TIMER0_CPP_REG (TIME0BASE + 0x0C)
12#define P_TIMER0_UPCNT (TIME0BASE + 0x10)
13
14/* Timer Controller Register */
15/* bit 0 Timer enable */
16#define TMR_DISABLE 0x0000
17#define TMR_ENABLE 0x0001
18
19/* bit 1 Interrupt enable */
20#define TMR_IE_DISABLE 0x0000
21#define TMR_IE_ENABLE 0x0002
22
23/* bit 2 Output enable */
24#define TMR_OE_DISABLE 0x0004
25#define TMR_OE_ENABLE 0x0000
26
27/* bit4 Up/Down counting selection */
28#define TMR_UD_DOWN 0x0000
29#define TMR_UD_UP 0x0010
30
31/* bit5 Up/Down counting control selection */
32#define TMR_UDS_UD 0x0000
33#define TMR_UDS_EXTUD 0x0020
34
35/* bit6 Time output mode */
36#define TMR_OM_TOGGLE 0x0000
37#define TMR_OM_PILSE 0x0040
38
39/* bit 8..9 External input active edge selection */
40#define TMR_ES_PE 0x0000
41#define TMR_ES_NE 0x0100
42#define TMR_ES_BOTH 0x0200
43
44/* bit 10..11 Operating mode */
45#define TMR_M_FREE 0x0000 /* free running timer mode */
46#define TMR_M_PERIODIC 0x0400 /* periodic timer mode */
47#define TMR_M_FC 0x0800 /* free running counter mode */
48#define TMR_M_PC 0x0c00 /* periodic counter mode */
49
50#define SYSTEM_CLOCK (27*1000000/4) /* 27 MHz */
51#endif /* _ASM_SCORE_SCOREREGS_H */
diff --git a/arch/score/include/asm/sections.h b/arch/score/include/asm/sections.h
new file mode 100644
index 000000000000..9441d23af005
--- /dev/null
+++ b/arch/score/include/asm/sections.h
@@ -0,0 +1,6 @@
1#ifndef _ASM_SCORE_SECTIONS_H
2#define _ASM_SCORE_SECTIONS_H
3
4#include <asm-generic/sections.h>
5
6#endif /* _ASM_SCORE_SECTIONS_H */
diff --git a/arch/score/include/asm/segment.h b/arch/score/include/asm/segment.h
new file mode 100644
index 000000000000..e16cf6afb495
--- /dev/null
+++ b/arch/score/include/asm/segment.h
@@ -0,0 +1,21 @@
1#ifndef _ASM_SCORE_SEGMENT_H
2#define _ASM_SCORE_SEGMENT_H
3
4#ifndef __ASSEMBLY__
5
6typedef struct {
7 unsigned long seg;
8} mm_segment_t;
9
10#define KERNEL_DS ((mm_segment_t){0})
11#define USER_DS KERNEL_DS
12
13# define get_ds() (KERNEL_DS)
14# define get_fs() (current_thread_info()->addr_limit)
15# define set_fs(x) \
16 do { current_thread_info()->addr_limit = (x); } while (0)
17
18# define segment_eq(a, b) ((a).seg == (b).seg)
19
20# endif /* __ASSEMBLY__ */
21#endif /* _ASM_SCORE_SEGMENT_H */
diff --git a/arch/score/include/asm/sembuf.h b/arch/score/include/asm/sembuf.h
new file mode 100644
index 000000000000..dae5e835ce9e
--- /dev/null
+++ b/arch/score/include/asm/sembuf.h
@@ -0,0 +1,6 @@
1#ifndef _ASM_SCORE_SEMBUF_H
2#define _ASM_SCORE_SEMBUF_H
3
4#include <asm-generic/sembuf.h>
5
6#endif /* _ASM_SCORE_SEMBUF_H */
diff --git a/arch/score/include/asm/setup.h b/arch/score/include/asm/setup.h
new file mode 100644
index 000000000000..3cb944dc68dc
--- /dev/null
+++ b/arch/score/include/asm/setup.h
@@ -0,0 +1,41 @@
1#ifndef _ASM_SCORE_SETUP_H
2#define _ASM_SCORE_SETUP_H
3
4#define COMMAND_LINE_SIZE 256
5#define MEMORY_START 0
6#define MEMORY_SIZE 0x2000000
7
8#ifdef __KERNEL__
9
10extern void pagetable_init(void);
11extern void pgd_init(unsigned long page);
12
13extern void setup_early_printk(void);
14extern void cpu_cache_init(void);
15extern void tlb_init(void);
16
17extern void handle_nmi(void);
18extern void handle_adelinsn(void);
19extern void handle_adedata(void);
20extern void handle_ibe(void);
21extern void handle_pel(void);
22extern void handle_sys(void);
23extern void handle_ccu(void);
24extern void handle_ri(void);
25extern void handle_tr(void);
26extern void handle_ades(void);
27extern void handle_cee(void);
28extern void handle_cpe(void);
29extern void handle_dve(void);
30extern void handle_dbe(void);
31extern void handle_reserved(void);
32extern void handle_tlb_refill(void);
33extern void handle_tlb_invaild(void);
34extern void handle_mod(void);
35extern void debug_exception_vector(void);
36extern void general_exception_vector(void);
37extern void interrupt_exception_vector(void);
38
39#endif /* __KERNEL__ */
40
41#endif /* _ASM_SCORE_SETUP_H */
diff --git a/arch/score/include/asm/shmbuf.h b/arch/score/include/asm/shmbuf.h
new file mode 100644
index 000000000000..c85b2429ba21
--- /dev/null
+++ b/arch/score/include/asm/shmbuf.h
@@ -0,0 +1,6 @@
1#ifndef _ASM_SCORE_SHMBUF_H
2#define _ASM_SCORE_SHMBUF_H
3
4#include <asm-generic/shmbuf.h>
5
6#endif /* _ASM_SCORE_SHMBUF_H */
diff --git a/arch/score/include/asm/shmparam.h b/arch/score/include/asm/shmparam.h
new file mode 100644
index 000000000000..1d60813141b6
--- /dev/null
+++ b/arch/score/include/asm/shmparam.h
@@ -0,0 +1,6 @@
1#ifndef _ASM_SCORE_SHMPARAM_H
2#define _ASM_SCORE_SHMPARAM_H
3
4#include <asm-generic/shmparam.h>
5
6#endif /* _ASM_SCORE_SHMPARAM_H */
diff --git a/arch/score/include/asm/sigcontext.h b/arch/score/include/asm/sigcontext.h
new file mode 100644
index 000000000000..5ffda39ddb90
--- /dev/null
+++ b/arch/score/include/asm/sigcontext.h
@@ -0,0 +1,22 @@
1#ifndef _ASM_SCORE_SIGCONTEXT_H
2#define _ASM_SCORE_SIGCONTEXT_H
3
4/*
5 * Keep this struct definition in sync with the sigcontext fragment
6 * in arch/score/tools/offset.c
7 */
8struct sigcontext {
9 unsigned int sc_regmask;
10 unsigned int sc_psr;
11 unsigned int sc_condition;
12 unsigned long sc_pc;
13 unsigned long sc_regs[32];
14 unsigned int sc_ssflags;
15 unsigned int sc_mdceh;
16 unsigned int sc_mdcel;
17 unsigned int sc_ecr;
18 unsigned long sc_ema;
19 unsigned long sc_sigset[4];
20};
21
22#endif /* _ASM_SCORE_SIGCONTEXT_H */
diff --git a/arch/score/include/asm/siginfo.h b/arch/score/include/asm/siginfo.h
new file mode 100644
index 000000000000..87ca35607a28
--- /dev/null
+++ b/arch/score/include/asm/siginfo.h
@@ -0,0 +1,6 @@
1#ifndef _ASM_SCORE_SIGINFO_H
2#define _ASM_SCORE_SIGINFO_H
3
4#include <asm-generic/siginfo.h>
5
6#endif /* _ASM_SCORE_SIGINFO_H */
diff --git a/arch/score/include/asm/signal.h b/arch/score/include/asm/signal.h
new file mode 100644
index 000000000000..2605bc06b64f
--- /dev/null
+++ b/arch/score/include/asm/signal.h
@@ -0,0 +1,6 @@
1#ifndef _ASM_SCORE_SIGNAL_H
2#define _ASM_SCORE_SIGNAL_H
3
4#include <asm-generic/signal.h>
5
6#endif /* _ASM_SCORE_SIGNAL_H */
diff --git a/arch/score/include/asm/socket.h b/arch/score/include/asm/socket.h
new file mode 100644
index 000000000000..612a70e385ba
--- /dev/null
+++ b/arch/score/include/asm/socket.h
@@ -0,0 +1,6 @@
1#ifndef _ASM_SCORE_SOCKET_H
2#define _ASM_SCORE_SOCKET_H
3
4#include <asm-generic/socket.h>
5
6#endif /* _ASM_SCORE_SOCKET_H */
diff --git a/arch/score/include/asm/sockios.h b/arch/score/include/asm/sockios.h
new file mode 100644
index 000000000000..ba8256480189
--- /dev/null
+++ b/arch/score/include/asm/sockios.h
@@ -0,0 +1,6 @@
1#ifndef _ASM_SCORE_SOCKIOS_H
2#define _ASM_SCORE_SOCKIOS_H
3
4#include <asm-generic/sockios.h>
5
6#endif /* _ASM_SCORE_SOCKIOS_H */
diff --git a/arch/score/include/asm/stat.h b/arch/score/include/asm/stat.h
new file mode 100644
index 000000000000..5037055500a2
--- /dev/null
+++ b/arch/score/include/asm/stat.h
@@ -0,0 +1,6 @@
1#ifndef _ASM_SCORE_STAT_H
2#define _ASM_SCORE_STAT_H
3
4#include <asm-generic/stat.h>
5
6#endif /* _ASM_SCORE_STAT_H */
diff --git a/arch/score/include/asm/statfs.h b/arch/score/include/asm/statfs.h
new file mode 100644
index 000000000000..36e41004e996
--- /dev/null
+++ b/arch/score/include/asm/statfs.h
@@ -0,0 +1,6 @@
1#ifndef _ASM_SCORE_STATFS_H
2#define _ASM_SCORE_STATFS_H
3
4#include <asm-generic/statfs.h>
5
6#endif /* _ASM_SCORE_STATFS_H */
diff --git a/arch/score/include/asm/string.h b/arch/score/include/asm/string.h
new file mode 100644
index 000000000000..8a6bf5063aa5
--- /dev/null
+++ b/arch/score/include/asm/string.h
@@ -0,0 +1,8 @@
1#ifndef _ASM_SCORE_STRING_H
2#define _ASM_SCORE_STRING_H
3
4extern void *memset(void *__s, int __c, size_t __count);
5extern void *memcpy(void *__to, __const__ void *__from, size_t __n);
6extern void *memmove(void *__dest, __const__ void *__src, size_t __n);
7
8#endif /* _ASM_SCORE_STRING_H */
diff --git a/arch/score/include/asm/swab.h b/arch/score/include/asm/swab.h
new file mode 100644
index 000000000000..fadc3cc6d8a2
--- /dev/null
+++ b/arch/score/include/asm/swab.h
@@ -0,0 +1,6 @@
1#ifndef _ASM_SCORE_SWAB_H
2#define _ASM_SCORE_SWAB_H
3
4#include <asm-generic/swab.h>
5
6#endif /* _ASM_SCORE_SWAB_H */
diff --git a/arch/score/include/asm/syscalls.h b/arch/score/include/asm/syscalls.h
new file mode 100644
index 000000000000..1dd5e0d6b0c3
--- /dev/null
+++ b/arch/score/include/asm/syscalls.h
@@ -0,0 +1,11 @@
1#ifndef _ASM_SCORE_SYSCALLS_H
2#define _ASM_SCORE_SYSCALLS_H
3
4asmlinkage long score_clone(struct pt_regs *regs);
5asmlinkage long score_execve(struct pt_regs *regs);
6asmlinkage long score_sigaltstack(struct pt_regs *regs);
7asmlinkage long score_rt_sigreturn(struct pt_regs *regs);
8
9#include <asm-generic/syscalls.h>
10
11#endif /* _ASM_SCORE_SYSCALLS_H */
diff --git a/arch/score/include/asm/system.h b/arch/score/include/asm/system.h
new file mode 100644
index 000000000000..589d5c7e171c
--- /dev/null
+++ b/arch/score/include/asm/system.h
@@ -0,0 +1,90 @@
1#ifndef _ASM_SCORE_SYSTEM_H
2#define _ASM_SCORE_SYSTEM_H
3
4#include <linux/types.h>
5#include <linux/irqflags.h>
6
7struct pt_regs;
8struct task_struct;
9
10extern void *resume(void *last, void *next, void *next_ti);
11
12#define switch_to(prev, next, last) \
13do { \
14 (last) = resume(prev, next, task_thread_info(next)); \
15} while (0)
16
17#define finish_arch_switch(prev) do {} while (0)
18
19typedef void (*vi_handler_t)(void);
20extern unsigned long arch_align_stack(unsigned long sp);
21
22#define mb() barrier()
23#define rmb() barrier()
24#define wmb() barrier()
25#define smp_mb() barrier()
26#define smp_rmb() barrier()
27#define smp_wmb() barrier()
28
29#define read_barrier_depends() do {} while (0)
30#define smp_read_barrier_depends() do {} while (0)
31
32#define set_mb(var, value) do {var = value; wmb(); } while (0)
33
34#define __HAVE_ARCH_CMPXCHG 1
35
36#include <asm-generic/cmpxchg-local.h>
37
38#ifndef __ASSEMBLY__
39
40struct __xchg_dummy { unsigned long a[100]; };
41#define __xg(x) ((struct __xchg_dummy *)(x))
42
43static inline
44unsigned long __xchg(volatile unsigned long *m, unsigned long val)
45{
46 unsigned long retval;
47 unsigned long flags;
48
49 local_irq_save(flags);
50 retval = *m;
51 *m = val;
52 local_irq_restore(flags);
53 return retval;
54}
55
56#define xchg(ptr, v) \
57 ((__typeof__(*(ptr))) __xchg((unsigned long *)(ptr), \
58 (unsigned long)(v)))
59
60static inline unsigned long __cmpxchg(volatile unsigned long *m,
61 unsigned long old, unsigned long new)
62{
63 unsigned long retval;
64 unsigned long flags;
65
66 local_irq_save(flags);
67 retval = *m;
68 if (retval == old)
69 *m = new;
70 local_irq_restore(flags);
71 return retval;
72}
73
74#define cmpxchg(ptr, o, n) \
75 ((__typeof__(*(ptr))) __cmpxchg((unsigned long *)(ptr), \
76 (unsigned long)(o), \
77 (unsigned long)(n)))
78
79extern void __die(const char *, struct pt_regs *, const char *,
80 const char *, unsigned long) __attribute__((noreturn));
81extern void __die_if_kernel(const char *, struct pt_regs *, const char *,
82 const char *, unsigned long);
83
84#define die(msg, regs) \
85 __die(msg, regs, __FILE__ ":", __func__, __LINE__)
86#define die_if_kernel(msg, regs) \
87 __die_if_kernel(msg, regs, __FILE__ ":", __func__, __LINE__)
88
89#endif /* !__ASSEMBLY__ */
90#endif /* _ASM_SCORE_SYSTEM_H */
diff --git a/arch/score/include/asm/termbits.h b/arch/score/include/asm/termbits.h
new file mode 100644
index 000000000000..9a95c1412437
--- /dev/null
+++ b/arch/score/include/asm/termbits.h
@@ -0,0 +1,6 @@
1#ifndef _ASM_SCORE_TERMBITS_H
2#define _ASM_SCORE_TERMBITS_H
3
4#include <asm-generic/termbits.h>
5
6#endif /* _ASM_SCORE_TERMBITS_H */
diff --git a/arch/score/include/asm/termios.h b/arch/score/include/asm/termios.h
new file mode 100644
index 000000000000..40984e811ad6
--- /dev/null
+++ b/arch/score/include/asm/termios.h
@@ -0,0 +1,6 @@
1#ifndef _ASM_SCORE_TERMIOS_H
2#define _ASM_SCORE_TERMIOS_H
3
4#include <asm-generic/termios.h>
5
6#endif /* _ASM_SCORE_TERMIOS_H */
diff --git a/arch/score/include/asm/thread_info.h b/arch/score/include/asm/thread_info.h
new file mode 100644
index 000000000000..3a1122885528
--- /dev/null
+++ b/arch/score/include/asm/thread_info.h
@@ -0,0 +1,105 @@
1#ifndef _ASM_SCORE_THREAD_INFO_H
2#define _ASM_SCORE_THREAD_INFO_H
3
4#ifdef __KERNEL__
5
6#define KU_MASK 0x08
7#define KU_USER 0x08
8#define KU_KERN 0x00
9
10#ifndef __ASSEMBLY__
11
12#include <asm/processor.h>
13
14/*
15 * low level task data that entry.S needs immediate access to
16 * - this struct should fit entirely inside of one cache line
17 * - this struct shares the supervisor stack pages
18 * - if the contents of this structure are changed, the assembly constants
19 * must also be changed
20 */
21struct thread_info {
22 struct task_struct *task; /* main task structure */
23 struct exec_domain *exec_domain; /* execution domain */
24 unsigned long flags; /* low level flags */
25 unsigned long tp_value; /* thread pointer */
26 __u32 cpu; /* current CPU */
27
28 /* 0 => preemptable, < 0 => BUG */
29 int preempt_count;
30
31 /*
32 * thread address space:
33 * 0-0xBFFFFFFF for user-thead
34 * 0-0xFFFFFFFF for kernel-thread
35 */
36 mm_segment_t addr_limit;
37 struct restart_block restart_block;
38 struct pt_regs *regs;
39};
40
41/*
42 * macros/functions for gaining access to the thread information structure
43 *
44 * preempt_count needs to be 1 initially, until the scheduler is functional.
45 */
46#define INIT_THREAD_INFO(tsk) \
47{ \
48 .task = &tsk, \
49 .exec_domain = &default_exec_domain, \
50 .cpu = 0, \
51 .preempt_count = 1, \
52 .addr_limit = KERNEL_DS, \
53 .restart_block = { \
54 .fn = do_no_restart_syscall, \
55 }, \
56}
57
58#define init_thread_info (init_thread_union.thread_info)
59#define init_stack (init_thread_union.stack)
60
61/* How to get the thread information struct from C. */
62register struct thread_info *__current_thread_info __asm__("r28");
63#define current_thread_info() __current_thread_info
64
65/* thread information allocation */
66#define THREAD_SIZE_ORDER (1)
67#define THREAD_SIZE (PAGE_SIZE << THREAD_SIZE_ORDER)
68#define THREAD_MASK (THREAD_SIZE - 1UL)
69#define __HAVE_ARCH_THREAD_INFO_ALLOCATOR
70
71#define alloc_thread_info(tsk) kmalloc(THREAD_SIZE, GFP_KERNEL)
72#define free_thread_info(info) kfree(info)
73
74#endif /* !__ASSEMBLY__ */
75
76#define PREEMPT_ACTIVE 0x10000000
77
78/*
79 * thread information flags
80 * - these are process state flags that various assembly files may need to
81 * access
82 * - pending work-to-be-done flags are in LSW
83 * - other flags in MSW
84 */
85#define TIF_SYSCALL_TRACE 0 /* syscall trace active */
86#define TIF_SIGPENDING 1 /* signal pending */
87#define TIF_NEED_RESCHED 2 /* rescheduling necessary */
88#define TIF_NOTIFY_RESUME 5 /* callback before returning to user */
89#define TIF_RESTORE_SIGMASK 9 /* restore signal mask in do_signal() */
90#define TIF_POLLING_NRFLAG 17 /* true if poll_idle() is polling
91 TIF_NEED_RESCHED */
92#define TIF_MEMDIE 18
93
94#define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE)
95#define _TIF_SIGPENDING (1<<TIF_SIGPENDING)
96#define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED)
97#define _TIF_NOTIFY_RESUME (1<<TIF_NOTIFY_RESUME)
98#define _TIF_RESTORE_SIGMASK (1<<TIF_RESTORE_SIGMASK)
99#define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG)
100
101#define _TIF_WORK_MASK (0x0000ffff)
102
103#endif /* __KERNEL__ */
104
105#endif /* _ASM_SCORE_THREAD_INFO_H */
diff --git a/arch/score/include/asm/timex.h b/arch/score/include/asm/timex.h
new file mode 100644
index 000000000000..a524ae0c5e7b
--- /dev/null
+++ b/arch/score/include/asm/timex.h
@@ -0,0 +1,8 @@
1#ifndef _ASM_SCORE_TIMEX_H
2#define _ASM_SCORE_TIMEX_H
3
4#define CLOCK_TICK_RATE 27000000 /* Timer input freq. */
5
6#include <asm-generic/timex.h>
7
8#endif /* _ASM_SCORE_TIMEX_H */
diff --git a/arch/score/include/asm/tlb.h b/arch/score/include/asm/tlb.h
new file mode 100644
index 000000000000..46882ed524e6
--- /dev/null
+++ b/arch/score/include/asm/tlb.h
@@ -0,0 +1,17 @@
1#ifndef _ASM_SCORE_TLB_H
2#define _ASM_SCORE_TLB_H
3
4/*
5 * SCORE doesn't need any special per-pte or per-vma handling, except
6 * we need to flush cache for area to be unmapped.
7 */
8#define tlb_start_vma(tlb, vma) do {} while (0)
9#define tlb_end_vma(tlb, vma) do {} while (0)
10#define __tlb_remove_tlb_entry(tlb, ptep, address) do {} while (0)
11#define tlb_flush(tlb) flush_tlb_mm((tlb)->mm)
12
13extern void score7_FTLB_refill_Handler(void);
14
15#include <asm-generic/tlb.h>
16
17#endif /* _ASM_SCORE_TLB_H */
diff --git a/arch/score/include/asm/tlbflush.h b/arch/score/include/asm/tlbflush.h
new file mode 100644
index 000000000000..9cce978367d5
--- /dev/null
+++ b/arch/score/include/asm/tlbflush.h
@@ -0,0 +1,142 @@
1#ifndef _ASM_SCORE_TLBFLUSH_H
2#define _ASM_SCORE_TLBFLUSH_H
3
4#include <linux/mm.h>
5
6/*
7 * TLB flushing:
8 *
9 * - flush_tlb_all() flushes all processes TLB entries
10 * - flush_tlb_mm(mm) flushes the specified mm context TLB entries
11 * - flush_tlb_page(vma, vmaddr) flushes one page
12 * - flush_tlb_range(vma, start, end) flushes a range of pages
13 * - flush_tlb_kernel_range(start, end) flushes a range of kernel pages
14 */
15extern void local_flush_tlb_all(void);
16extern void local_flush_tlb_mm(struct mm_struct *mm);
17extern void local_flush_tlb_range(struct vm_area_struct *vma,
18 unsigned long start, unsigned long end);
19extern void local_flush_tlb_kernel_range(unsigned long start,
20 unsigned long end);
21extern void local_flush_tlb_page(struct vm_area_struct *vma,
22 unsigned long page);
23extern void local_flush_tlb_one(unsigned long vaddr);
24
25#define flush_tlb_all() local_flush_tlb_all()
26#define flush_tlb_mm(mm) local_flush_tlb_mm(mm)
27#define flush_tlb_range(vma, vmaddr, end) \
28 local_flush_tlb_range(vma, vmaddr, end)
29#define flush_tlb_kernel_range(vmaddr, end) \
30 local_flush_tlb_kernel_range(vmaddr, end)
31#define flush_tlb_page(vma, page) local_flush_tlb_page(vma, page)
32#define flush_tlb_one(vaddr) local_flush_tlb_one(vaddr)
33
34#ifndef __ASSEMBLY__
35
36static inline unsigned long pevn_get(void)
37{
38 unsigned long val;
39
40 __asm__ __volatile__(
41 "mfcr %0, cr11\n"
42 "nop\nnop\n"
43 : "=r" (val));
44
45 return val;
46}
47
48static inline void pevn_set(unsigned long val)
49{
50 __asm__ __volatile__(
51 "mtcr %0, cr11\n"
52 "nop\nnop\nnop\nnop\nnop\n"
53 : : "r" (val));
54}
55
56static inline void pectx_set(unsigned long val)
57{
58 __asm__ __volatile__(
59 "mtcr %0, cr12\n"
60 "nop\nnop\nnop\nnop\nnop\n"
61 : : "r" (val));
62}
63
64static inline unsigned long pectx_get(void)
65{
66 unsigned long val;
67 __asm__ __volatile__(
68 "mfcr %0, cr12\n"
69 "nop\nnop\n"
70 : "=r" (val));
71 return val;
72}
73static inline unsigned long tlblock_get(void)
74{
75 unsigned long val;
76
77 __asm__ __volatile__(
78 "mfcr %0, cr7\n"
79 "nop\nnop\n"
80 : "=r" (val));
81 return val;
82}
83static inline void tlblock_set(unsigned long val)
84{
85 __asm__ __volatile__(
86 "mtcr %0, cr7\n"
87 "nop\nnop\nnop\nnop\nnop\n"
88 : : "r" (val));
89}
90
91static inline void tlbpt_set(unsigned long val)
92{
93 __asm__ __volatile__(
94 "mtcr %0, cr8\n"
95 "nop\nnop\nnop\nnop\nnop\n"
96 : : "r" (val));
97}
98
99static inline long tlbpt_get(void)
100{
101 long val;
102
103 __asm__ __volatile__(
104 "mfcr %0, cr8\n"
105 "nop\nnop\n"
106 : "=r" (val));
107
108 return val;
109}
110
111static inline void peaddr_set(unsigned long val)
112{
113 __asm__ __volatile__(
114 "mtcr %0, cr9\n"
115 "nop\nnop\nnop\nnop\nnop\n"
116 : : "r" (val));
117}
118
119/* TLB operations. */
120static inline void tlb_probe(void)
121{
122 __asm__ __volatile__("stlb;nop;nop;nop;nop;nop");
123}
124
125static inline void tlb_read(void)
126{
127 __asm__ __volatile__("mftlb;nop;nop;nop;nop;nop");
128}
129
130static inline void tlb_write_indexed(void)
131{
132 __asm__ __volatile__("mtptlb;nop;nop;nop;nop;nop");
133}
134
135static inline void tlb_write_random(void)
136{
137 __asm__ __volatile__("mtrtlb;nop;nop;nop;nop;nop");
138}
139
140#endif /* Not __ASSEMBLY__ */
141
142#endif /* _ASM_SCORE_TLBFLUSH_H */
diff --git a/arch/score/include/asm/topology.h b/arch/score/include/asm/topology.h
new file mode 100644
index 000000000000..425fba381f88
--- /dev/null
+++ b/arch/score/include/asm/topology.h
@@ -0,0 +1,6 @@
1#ifndef _ASM_SCORE_TOPOLOGY_H
2#define _ASM_SCORE_TOPOLOGY_H
3
4#include <asm-generic/topology.h>
5
6#endif /* _ASM_SCORE_TOPOLOGY_H */
diff --git a/arch/score/include/asm/types.h b/arch/score/include/asm/types.h
new file mode 100644
index 000000000000..2140032778ee
--- /dev/null
+++ b/arch/score/include/asm/types.h
@@ -0,0 +1,6 @@
1#ifndef _ASM_SCORE_TYPES_H
2#define _ASM_SCORE_TYPES_H
3
4#include <asm-generic/types.h>
5
6#endif /* _ASM_SCORE_TYPES_H */
diff --git a/arch/score/include/asm/uaccess.h b/arch/score/include/asm/uaccess.h
new file mode 100644
index 000000000000..ab66ddde777b
--- /dev/null
+++ b/arch/score/include/asm/uaccess.h
@@ -0,0 +1,424 @@
1#ifndef __SCORE_UACCESS_H
2#define __SCORE_UACCESS_H
3
4#include <linux/kernel.h>
5#include <linux/errno.h>
6#include <linux/thread_info.h>
7
8#define VERIFY_READ 0
9#define VERIFY_WRITE 1
10
11#define get_ds() (KERNEL_DS)
12#define get_fs() (current_thread_info()->addr_limit)
13#define segment_eq(a, b) ((a).seg == (b).seg)
14
15/*
16 * Is a address valid? This does a straighforward calculation rather
17 * than tests.
18 *
19 * Address valid if:
20 * - "addr" doesn't have any high-bits set
21 * - AND "size" doesn't have any high-bits set
22 * - AND "addr+size" doesn't have any high-bits set
23 * - OR we are in kernel mode.
24 *
25 * __ua_size() is a trick to avoid runtime checking of positive constant
26 * sizes; for those we already know at compile time that the size is ok.
27 */
28#define __ua_size(size) \
29 ((__builtin_constant_p(size) && (signed long) (size) > 0) ? 0 : (size))
30
31/*
32 * access_ok: - Checks if a user space pointer is valid
33 * @type: Type of access: %VERIFY_READ or %VERIFY_WRITE. Note that
34 * %VERIFY_WRITE is a superset of %VERIFY_READ - if it is safe
35 * to write to a block, it is always safe to read from it.
36 * @addr: User space pointer to start of block to check
37 * @size: Size of block to check
38 *
39 * Context: User context only. This function may sleep.
40 *
41 * Checks if a pointer to a block of memory in user space is valid.
42 *
43 * Returns true (nonzero) if the memory block may be valid, false (zero)
44 * if it is definitely invalid.
45 *
46 * Note that, depending on architecture, this function probably just
47 * checks that the pointer is in the user space range - after calling
48 * this function, memory access functions may still return -EFAULT.
49 */
50
51#define __access_ok(addr, size) \
52 (((long)((get_fs().seg) & \
53 ((addr) | ((addr) + (size)) | \
54 __ua_size(size)))) == 0)
55
56#define access_ok(type, addr, size) \
57 likely(__access_ok((unsigned long)(addr), (size)))
58
59/*
60 * put_user: - Write a simple value into user space.
61 * @x: Value to copy to user space.
62 * @ptr: Destination address, in user space.
63 *
64 * Context: User context only. This function may sleep.
65 *
66 * This macro copies a single simple value from kernel space to user
67 * space. It supports simple types like char and int, but not larger
68 * data types like structures or arrays.
69 *
70 * @ptr must have pointer-to-simple-variable type, and @x must be assignable
71 * to the result of dereferencing @ptr.
72 *
73 * Returns zero on success, or -EFAULT on error.
74 */
75#define put_user(x, ptr) __put_user_check((x), (ptr), sizeof(*(ptr)))
76
77/*
78 * get_user: - Get a simple variable from user space.
79 * @x: Variable to store result.
80 * @ptr: Source address, in user space.
81 *
82 * Context: User context only. This function may sleep.
83 *
84 * This macro copies a single simple variable from user space to kernel
85 * space. It supports simple types like char and int, but not larger
86 * data types like structures or arrays.
87 *
88 * @ptr must have pointer-to-simple-variable type, and the result of
89 * dereferencing @ptr must be assignable to @x without a cast.
90 *
91 * Returns zero on success, or -EFAULT on error.
92 * On error, the variable @x is set to zero.
93 */
94#define get_user(x, ptr) __get_user_check((x), (ptr), sizeof(*(ptr)))
95
96/*
97 * __put_user: - Write a simple value into user space, with less checking.
98 * @x: Value to copy to user space.
99 * @ptr: Destination address, in user space.
100 *
101 * Context: User context only. This function may sleep.
102 *
103 * This macro copies a single simple value from kernel space to user
104 * space. It supports simple types like char and int, but not larger
105 * data types like structures or arrays.
106 *
107 * @ptr must have pointer-to-simple-variable type, and @x must be assignable
108 * to the result of dereferencing @ptr.
109 *
110 * Caller must check the pointer with access_ok() before calling this
111 * function.
112 *
113 * Returns zero on success, or -EFAULT on error.
114 */
115#define __put_user(x, ptr) __put_user_nocheck((x), (ptr), sizeof(*(ptr)))
116
117/*
118 * __get_user: - Get a simple variable from user space, with less checking.
119 * @x: Variable to store result.
120 * @ptr: Source address, in user space.
121 *
122 * Context: User context only. This function may sleep.
123 *
124 * This macro copies a single simple variable from user space to kernel
125 * space. It supports simple types like char and int, but not larger
126 * data types like structures or arrays.
127 *
128 * @ptr must have pointer-to-simple-variable type, and the result of
129 * dereferencing @ptr must be assignable to @x without a cast.
130 *
131 * Caller must check the pointer with access_ok() before calling this
132 * function.
133 *
134 * Returns zero on success, or -EFAULT on error.
135 * On error, the variable @x is set to zero.
136 */
137#define __get_user(x, ptr) __get_user_nocheck((x), (ptr), sizeof(*(ptr)))
138
139struct __large_struct { unsigned long buf[100]; };
140#define __m(x) (*(struct __large_struct __user *)(x))
141
142/*
143 * Yuck. We need two variants, one for 64bit operation and one
144 * for 32 bit mode and old iron.
145 */
146extern void __get_user_unknown(void);
147
148#define __get_user_common(val, size, ptr) \
149do { \
150 switch (size) { \
151 case 1: \
152 __get_user_asm(val, "lb", ptr); \
153 break; \
154 case 2: \
155 __get_user_asm(val, "lh", ptr); \
156 break; \
157 case 4: \
158 __get_user_asm(val, "lw", ptr); \
159 break; \
160 case 8: \
161 if ((copy_from_user((void *)&val, ptr, 8)) == 0) \
162 __gu_err = 0; \
163 else \
164 __gu_err = -EFAULT; \
165 break; \
166 default: \
167 __get_user_unknown(); \
168 break; \
169 } \
170} while (0)
171
172#define __get_user_nocheck(x, ptr, size) \
173({ \
174 long __gu_err = 0; \
175 __get_user_common((x), size, ptr); \
176 __gu_err; \
177})
178
179#define __get_user_check(x, ptr, size) \
180({ \
181 long __gu_err = -EFAULT; \
182 const __typeof__(*(ptr)) __user *__gu_ptr = (ptr); \
183 \
184 if (likely(access_ok(VERIFY_READ, __gu_ptr, size))) \
185 __get_user_common((x), size, __gu_ptr); \
186 \
187 __gu_err; \
188})
189
190#define __get_user_asm(val, insn, addr) \
191{ \
192 long __gu_tmp; \
193 \
194 __asm__ __volatile__( \
195 "1:" insn " %1, %3\n" \
196 "2:\n" \
197 ".section .fixup,\"ax\"\n" \
198 "3:li %0, %4\n" \
199 "j 2b\n" \
200 ".previous\n" \
201 ".section __ex_table,\"a\"\n" \
202 ".word 1b, 3b\n" \
203 ".previous\n" \
204 : "=r" (__gu_err), "=r" (__gu_tmp) \
205 : "0" (0), "o" (__m(addr)), "i" (-EFAULT)); \
206 \
207 (val) = (__typeof__(*(addr))) __gu_tmp; \
208}
209
210/*
211 * Yuck. We need two variants, one for 64bit operation and one
212 * for 32 bit mode and old iron.
213 */
214#define __put_user_nocheck(val, ptr, size) \
215({ \
216 __typeof__(*(ptr)) __pu_val; \
217 long __pu_err = 0; \
218 \
219 __pu_val = (val); \
220 switch (size) { \
221 case 1: \
222 __put_user_asm("sb", ptr); \
223 break; \
224 case 2: \
225 __put_user_asm("sh", ptr); \
226 break; \
227 case 4: \
228 __put_user_asm("sw", ptr); \
229 break; \
230 case 8: \
231 if ((__copy_to_user((void *)ptr, &__pu_val, 8)) == 0) \
232 __pu_err = 0; \
233 else \
234 __pu_err = -EFAULT; \
235 break; \
236 default: \
237 __put_user_unknown(); \
238 break; \
239 } \
240 __pu_err; \
241})
242
243
244#define __put_user_check(val, ptr, size) \
245({ \
246 __typeof__(*(ptr)) __user *__pu_addr = (ptr); \
247 __typeof__(*(ptr)) __pu_val = (val); \
248 long __pu_err = -EFAULT; \
249 \
250 if (likely(access_ok(VERIFY_WRITE, __pu_addr, size))) { \
251 switch (size) { \
252 case 1: \
253 __put_user_asm("sb", __pu_addr); \
254 break; \
255 case 2: \
256 __put_user_asm("sh", __pu_addr); \
257 break; \
258 case 4: \
259 __put_user_asm("sw", __pu_addr); \
260 break; \
261 case 8: \
262 if ((__copy_to_user((void *)__pu_addr, &__pu_val, 8)) == 0)\
263 __pu_err = 0; \
264 else \
265 __pu_err = -EFAULT; \
266 break; \
267 default: \
268 __put_user_unknown(); \
269 break; \
270 } \
271 } \
272 __pu_err; \
273})
274
275#define __put_user_asm(insn, ptr) \
276 __asm__ __volatile__( \
277 "1:" insn " %2, %3\n" \
278 "2:\n" \
279 ".section .fixup,\"ax\"\n" \
280 "3:li %0, %4\n" \
281 "j 2b\n" \
282 ".previous\n" \
283 ".section __ex_table,\"a\"\n" \
284 ".word 1b, 3b\n" \
285 ".previous\n" \
286 : "=r" (__pu_err) \
287 : "0" (0), "r" (__pu_val), "o" (__m(ptr)), \
288 "i" (-EFAULT));
289
290extern void __put_user_unknown(void);
291extern int __copy_tofrom_user(void *to, const void *from, unsigned long len);
292
293static inline unsigned long
294copy_from_user(void *to, const void *from, unsigned long len)
295{
296 unsigned long over;
297
298 if (access_ok(VERIFY_READ, from, len))
299 return __copy_tofrom_user(to, from, len);
300
301 if ((unsigned long)from < TASK_SIZE) {
302 over = (unsigned long)from + len - TASK_SIZE;
303 return __copy_tofrom_user(to, from, len - over) + over;
304 }
305 return len;
306}
307
308static inline unsigned long
309copy_to_user(void *to, const void *from, unsigned long len)
310{
311 unsigned long over;
312
313 if (access_ok(VERIFY_WRITE, to, len))
314 return __copy_tofrom_user(to, from, len);
315
316 if ((unsigned long)to < TASK_SIZE) {
317 over = (unsigned long)to + len - TASK_SIZE;
318 return __copy_tofrom_user(to, from, len - over) + over;
319 }
320 return len;
321}
322
323#define __copy_from_user(to, from, len) \
324 __copy_tofrom_user((to), (from), (len))
325
326#define __copy_to_user(to, from, len) \
327 __copy_tofrom_user((to), (from), (len))
328
329static inline unsigned long
330__copy_to_user_inatomic(void *to, const void *from, unsigned long len)
331{
332 return __copy_to_user(to, from, len);
333}
334
335static inline unsigned long
336__copy_from_user_inatomic(void *to, const void *from, unsigned long len)
337{
338 return __copy_from_user(to, from, len);
339}
340
341#define __copy_in_user(to, from, len) __copy_from_user(to, from, len)
342
343static inline unsigned long
344copy_in_user(void *to, const void *from, unsigned long len)
345{
346 if (access_ok(VERIFY_READ, from, len) &&
347 access_ok(VERFITY_WRITE, to, len))
348 return copy_from_user(to, from, len);
349}
350
351/*
352 * __clear_user: - Zero a block of memory in user space, with less checking.
353 * @to: Destination address, in user space.
354 * @n: Number of bytes to zero.
355 *
356 * Zero a block of memory in user space. Caller must check
357 * the specified block with access_ok() before calling this function.
358 *
359 * Returns number of bytes that could not be cleared.
360 * On success, this will be zero.
361 */
362extern unsigned long __clear_user(void __user *src, unsigned long size);
363
364static inline unsigned long clear_user(char *src, unsigned long size)
365{
366 if (access_ok(VERIFY_WRITE, src, size))
367 return __clear_user(src, size);
368
369 return -EFAULT;
370}
371/*
372 * __strncpy_from_user: - Copy a NUL terminated string from userspace, with less checking.
373 * @dst: Destination address, in kernel space. This buffer must be at
374 * least @count bytes long.
375 * @src: Source address, in user space.
376 * @count: Maximum number of bytes to copy, including the trailing NUL.
377 *
378 * Copies a NUL-terminated string from userspace to kernel space.
379 * Caller must check the specified block with access_ok() before calling
380 * this function.
381 *
382 * On success, returns the length of the string (not including the trailing
383 * NUL).
384 *
385 * If access to userspace fails, returns -EFAULT (some data may have been
386 * copied).
387 *
388 * If @count is smaller than the length of the string, copies @count bytes
389 * and returns @count.
390 */
391extern int __strncpy_from_user(char *dst, const char *src, long len);
392
393static inline int strncpy_from_user(char *dst, const char *src, long len)
394{
395 if (access_ok(VERIFY_READ, src, 1))
396 return __strncpy_from_user(dst, src, len);
397
398 return -EFAULT;
399}
400
401extern int __strlen_user(const char *src);
402static inline long strlen_user(const char __user *src)
403{
404 return __strlen_user(src);
405}
406
407extern int __strnlen_user(const char *str, long len);
408static inline long strnlen_user(const char __user *str, long len)
409{
410 if (!access_ok(VERIFY_READ, str, 0))
411 return 0;
412 else
413 return __strnlen_user(str, len);
414}
415
416struct exception_table_entry {
417 unsigned long insn;
418 unsigned long fixup;
419};
420
421extern int fixup_exception(struct pt_regs *regs);
422
423#endif /* __SCORE_UACCESS_H */
424
diff --git a/arch/score/include/asm/ucontext.h b/arch/score/include/asm/ucontext.h
new file mode 100644
index 000000000000..9bc07b9f30fb
--- /dev/null
+++ b/arch/score/include/asm/ucontext.h
@@ -0,0 +1 @@
#include <asm-generic/ucontext.h>
diff --git a/arch/score/include/asm/unaligned.h b/arch/score/include/asm/unaligned.h
new file mode 100644
index 000000000000..2fc06de51c62
--- /dev/null
+++ b/arch/score/include/asm/unaligned.h
@@ -0,0 +1,6 @@
1#ifndef _ASM_SCORE_UNALIGNED_H
2#define _ASM_SCORE_UNALIGNED_H
3
4#include <asm-generic/unaligned.h>
5
6#endif /* _ASM_SCORE_UNALIGNED_H */
diff --git a/arch/score/include/asm/unistd.h b/arch/score/include/asm/unistd.h
new file mode 100644
index 000000000000..4aa957364d4d
--- /dev/null
+++ b/arch/score/include/asm/unistd.h
@@ -0,0 +1,13 @@
1#if !defined(_ASM_SCORE_UNISTD_H) || defined(__SYSCALL)
2#define _ASM_SCORE_UNISTD_H
3
4#define __ARCH_HAVE_MMU
5
6#define __ARCH_WANT_SYSCALL_NO_AT
7#define __ARCH_WANT_SYSCALL_NO_FLAGS
8#define __ARCH_WANT_SYSCALL_OFF_T
9#define __ARCH_WANT_SYSCALL_DEPRECATED
10
11#include <asm-generic/unistd.h>
12
13#endif /* _ASM_SCORE_UNISTD_H */
diff --git a/arch/score/include/asm/user.h b/arch/score/include/asm/user.h
new file mode 100644
index 000000000000..7bfb8e2c8054
--- /dev/null
+++ b/arch/score/include/asm/user.h
@@ -0,0 +1,21 @@
1#ifndef _ASM_SCORE_USER_H
2#define _ASM_SCORE_USER_H
3
4struct user_regs_struct {
5 unsigned long regs[32];
6
7 unsigned long cel;
8 unsigned long ceh;
9
10 unsigned long sr0; /* cnt */
11 unsigned long sr1; /* lcr */
12 unsigned long sr2; /* scr */
13
14 unsigned long cp0_epc;
15 unsigned long cp0_ema;
16 unsigned long cp0_psr;
17 unsigned long cp0_ecr;
18 unsigned long cp0_condition;
19};
20
21#endif /* _ASM_SCORE_USER_H */
diff --git a/arch/score/kernel/Makefile b/arch/score/kernel/Makefile
new file mode 100644
index 000000000000..f218673b5d3d
--- /dev/null
+++ b/arch/score/kernel/Makefile
@@ -0,0 +1,11 @@
1#
2# Makefile for the Linux/SCORE kernel.
3#
4
5extra-y := head.o vmlinux.lds
6
7obj-y += entry.o init_task.o irq.o process.o ptrace.o \
8 setup.o signal.o sys_score.o time.o traps.o \
9 sys_call_table.o
10
11obj-$(CONFIG_MODULES) += module.o
diff --git a/arch/score/kernel/asm-offsets.c b/arch/score/kernel/asm-offsets.c
new file mode 100644
index 000000000000..57788f44c6fb
--- /dev/null
+++ b/arch/score/kernel/asm-offsets.c
@@ -0,0 +1,216 @@
1/*
2 * arch/score/kernel/asm-offsets.c
3 *
4 * Score Processor version.
5 *
6 * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
7 * Chen Liqin <liqin.chen@sunplusct.com>
8 * Lennox Wu <lennox.wu@sunplusct.com>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, see the file COPYING, or write
22 * to the Free Software Foundation, Inc.,
23 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
24 */
25
26#include <linux/kbuild.h>
27#include <linux/interrupt.h>
28#include <linux/mm.h>
29#include <linux/sched.h>
30
31#include <asm-generic/cmpxchg-local.h>
32
33void output_ptreg_defines(void)
34{
35 COMMENT("SCORE pt_regs offsets.");
36 OFFSET(PT_R0, pt_regs, regs[0]);
37 OFFSET(PT_R1, pt_regs, regs[1]);
38 OFFSET(PT_R2, pt_regs, regs[2]);
39 OFFSET(PT_R3, pt_regs, regs[3]);
40 OFFSET(PT_R4, pt_regs, regs[4]);
41 OFFSET(PT_R5, pt_regs, regs[5]);
42 OFFSET(PT_R6, pt_regs, regs[6]);
43 OFFSET(PT_R7, pt_regs, regs[7]);
44 OFFSET(PT_R8, pt_regs, regs[8]);
45 OFFSET(PT_R9, pt_regs, regs[9]);
46 OFFSET(PT_R10, pt_regs, regs[10]);
47 OFFSET(PT_R11, pt_regs, regs[11]);
48 OFFSET(PT_R12, pt_regs, regs[12]);
49 OFFSET(PT_R13, pt_regs, regs[13]);
50 OFFSET(PT_R14, pt_regs, regs[14]);
51 OFFSET(PT_R15, pt_regs, regs[15]);
52 OFFSET(PT_R16, pt_regs, regs[16]);
53 OFFSET(PT_R17, pt_regs, regs[17]);
54 OFFSET(PT_R18, pt_regs, regs[18]);
55 OFFSET(PT_R19, pt_regs, regs[19]);
56 OFFSET(PT_R20, pt_regs, regs[20]);
57 OFFSET(PT_R21, pt_regs, regs[21]);
58 OFFSET(PT_R22, pt_regs, regs[22]);
59 OFFSET(PT_R23, pt_regs, regs[23]);
60 OFFSET(PT_R24, pt_regs, regs[24]);
61 OFFSET(PT_R25, pt_regs, regs[25]);
62 OFFSET(PT_R26, pt_regs, regs[26]);
63 OFFSET(PT_R27, pt_regs, regs[27]);
64 OFFSET(PT_R28, pt_regs, regs[28]);
65 OFFSET(PT_R29, pt_regs, regs[29]);
66 OFFSET(PT_R30, pt_regs, regs[30]);
67 OFFSET(PT_R31, pt_regs, regs[31]);
68
69 OFFSET(PT_ORIG_R4, pt_regs, orig_r4);
70 OFFSET(PT_ORIG_R7, pt_regs, orig_r7);
71 OFFSET(PT_CEL, pt_regs, cel);
72 OFFSET(PT_CEH, pt_regs, ceh);
73 OFFSET(PT_SR0, pt_regs, sr0);
74 OFFSET(PT_SR1, pt_regs, sr1);
75 OFFSET(PT_SR2, pt_regs, sr2);
76 OFFSET(PT_EPC, pt_regs, cp0_epc);
77 OFFSET(PT_EMA, pt_regs, cp0_ema);
78 OFFSET(PT_PSR, pt_regs, cp0_psr);
79 OFFSET(PT_ECR, pt_regs, cp0_ecr);
80 OFFSET(PT_CONDITION, pt_regs, cp0_condition);
81 OFFSET(PT_IS_SYSCALL, pt_regs, is_syscall);
82
83 DEFINE(PT_SIZE, sizeof(struct pt_regs));
84 BLANK();
85}
86
87void output_task_defines(void)
88{
89 COMMENT("SCORE task_struct offsets.");
90 OFFSET(TASK_STATE, task_struct, state);
91 OFFSET(TASK_THREAD_INFO, task_struct, stack);
92 OFFSET(TASK_FLAGS, task_struct, flags);
93 OFFSET(TASK_MM, task_struct, mm);
94 OFFSET(TASK_PID, task_struct, pid);
95 DEFINE(TASK_STRUCT_SIZE, sizeof(struct task_struct));
96 BLANK();
97}
98
99void output_thread_info_defines(void)
100{
101 COMMENT("SCORE thread_info offsets.");
102 OFFSET(TI_TASK, thread_info, task);
103 OFFSET(TI_EXEC_DOMAIN, thread_info, exec_domain);
104 OFFSET(TI_FLAGS, thread_info, flags);
105 OFFSET(TI_TP_VALUE, thread_info, tp_value);
106 OFFSET(TI_CPU, thread_info, cpu);
107 OFFSET(TI_PRE_COUNT, thread_info, preempt_count);
108 OFFSET(TI_ADDR_LIMIT, thread_info, addr_limit);
109 OFFSET(TI_RESTART_BLOCK, thread_info, restart_block);
110 OFFSET(TI_REGS, thread_info, regs);
111 DEFINE(KERNEL_STACK_SIZE, THREAD_SIZE);
112 DEFINE(KERNEL_STACK_MASK, THREAD_MASK);
113 BLANK();
114}
115
116void output_thread_defines(void)
117{
118 COMMENT("SCORE specific thread_struct offsets.");
119 OFFSET(THREAD_REG0, task_struct, thread.reg0);
120 OFFSET(THREAD_REG2, task_struct, thread.reg2);
121 OFFSET(THREAD_REG3, task_struct, thread.reg3);
122 OFFSET(THREAD_REG12, task_struct, thread.reg12);
123 OFFSET(THREAD_REG13, task_struct, thread.reg13);
124 OFFSET(THREAD_REG14, task_struct, thread.reg14);
125 OFFSET(THREAD_REG15, task_struct, thread.reg15);
126 OFFSET(THREAD_REG16, task_struct, thread.reg16);
127 OFFSET(THREAD_REG17, task_struct, thread.reg17);
128 OFFSET(THREAD_REG18, task_struct, thread.reg18);
129 OFFSET(THREAD_REG19, task_struct, thread.reg19);
130 OFFSET(THREAD_REG20, task_struct, thread.reg20);
131 OFFSET(THREAD_REG21, task_struct, thread.reg21);
132 OFFSET(THREAD_REG29, task_struct, thread.reg29);
133
134 OFFSET(THREAD_PSR, task_struct, thread.cp0_psr);
135 OFFSET(THREAD_EMA, task_struct, thread.cp0_ema);
136 OFFSET(THREAD_BADUADDR, task_struct, thread.cp0_baduaddr);
137 OFFSET(THREAD_ECODE, task_struct, thread.error_code);
138 OFFSET(THREAD_TRAPNO, task_struct, thread.trap_no);
139 BLANK();
140}
141
142void output_mm_defines(void)
143{
144 COMMENT("Size of struct page");
145 DEFINE(STRUCT_PAGE_SIZE, sizeof(struct page));
146 BLANK();
147 COMMENT("Linux mm_struct offsets.");
148 OFFSET(MM_USERS, mm_struct, mm_users);
149 OFFSET(MM_PGD, mm_struct, pgd);
150 OFFSET(MM_CONTEXT, mm_struct, context);
151 BLANK();
152 DEFINE(_PAGE_SIZE, PAGE_SIZE);
153 DEFINE(_PAGE_SHIFT, PAGE_SHIFT);
154 BLANK();
155 DEFINE(_PGD_T_SIZE, sizeof(pgd_t));
156 DEFINE(_PTE_T_SIZE, sizeof(pte_t));
157 BLANK();
158 DEFINE(_PGD_ORDER, PGD_ORDER);
159 DEFINE(_PTE_ORDER, PTE_ORDER);
160 BLANK();
161 DEFINE(_PGDIR_SHIFT, PGDIR_SHIFT);
162 BLANK();
163 DEFINE(_PTRS_PER_PGD, PTRS_PER_PGD);
164 DEFINE(_PTRS_PER_PTE, PTRS_PER_PTE);
165 BLANK();
166}
167
168void output_sc_defines(void)
169{
170 COMMENT("Linux sigcontext offsets.");
171 OFFSET(SC_REGS, sigcontext, sc_regs);
172 OFFSET(SC_MDCEH, sigcontext, sc_mdceh);
173 OFFSET(SC_MDCEL, sigcontext, sc_mdcel);
174 OFFSET(SC_PC, sigcontext, sc_pc);
175 OFFSET(SC_PSR, sigcontext, sc_psr);
176 OFFSET(SC_ECR, sigcontext, sc_ecr);
177 OFFSET(SC_EMA, sigcontext, sc_ema);
178 BLANK();
179}
180
181void output_signal_defined(void)
182{
183 COMMENT("Linux signal numbers.");
184 DEFINE(_SIGHUP, SIGHUP);
185 DEFINE(_SIGINT, SIGINT);
186 DEFINE(_SIGQUIT, SIGQUIT);
187 DEFINE(_SIGILL, SIGILL);
188 DEFINE(_SIGTRAP, SIGTRAP);
189 DEFINE(_SIGIOT, SIGIOT);
190 DEFINE(_SIGABRT, SIGABRT);
191 DEFINE(_SIGFPE, SIGFPE);
192 DEFINE(_SIGKILL, SIGKILL);
193 DEFINE(_SIGBUS, SIGBUS);
194 DEFINE(_SIGSEGV, SIGSEGV);
195 DEFINE(_SIGSYS, SIGSYS);
196 DEFINE(_SIGPIPE, SIGPIPE);
197 DEFINE(_SIGALRM, SIGALRM);
198 DEFINE(_SIGTERM, SIGTERM);
199 DEFINE(_SIGUSR1, SIGUSR1);
200 DEFINE(_SIGUSR2, SIGUSR2);
201 DEFINE(_SIGCHLD, SIGCHLD);
202 DEFINE(_SIGPWR, SIGPWR);
203 DEFINE(_SIGWINCH, SIGWINCH);
204 DEFINE(_SIGURG, SIGURG);
205 DEFINE(_SIGIO, SIGIO);
206 DEFINE(_SIGSTOP, SIGSTOP);
207 DEFINE(_SIGTSTP, SIGTSTP);
208 DEFINE(_SIGCONT, SIGCONT);
209 DEFINE(_SIGTTIN, SIGTTIN);
210 DEFINE(_SIGTTOU, SIGTTOU);
211 DEFINE(_SIGVTALRM, SIGVTALRM);
212 DEFINE(_SIGPROF, SIGPROF);
213 DEFINE(_SIGXCPU, SIGXCPU);
214 DEFINE(_SIGXFSZ, SIGXFSZ);
215 BLANK();
216}
diff --git a/arch/score/kernel/entry.S b/arch/score/kernel/entry.S
new file mode 100644
index 000000000000..577abba3fac6
--- /dev/null
+++ b/arch/score/kernel/entry.S
@@ -0,0 +1,514 @@
1/*
2 * arch/score/kernel/entry.S
3 *
4 * Score Processor version.
5 *
6 * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
7 * Chen Liqin <liqin.chen@sunplusct.com>
8 * Lennox Wu <lennox.wu@sunplusct.com>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, see the file COPYING, or write
22 * to the Free Software Foundation, Inc.,
23 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
24 */
25
26#include <linux/err.h>
27#include <linux/init.h>
28#include <linux/linkage.h>
29
30#include <asm/asmmacro.h>
31#include <asm/thread_info.h>
32#include <asm/unistd.h>
33
34/*
35 * disable interrupts.
36 */
37.macro disable_irq
38 mfcr r8, cr0
39 srli r8, r8, 1
40 slli r8, r8, 1
41 mtcr r8, cr0
42 nop
43 nop
44 nop
45 nop
46 nop
47.endm
48
49/*
50 * enable interrupts.
51 */
52.macro enable_irq
53 mfcr r8, cr0
54 ori r8, 1
55 mtcr r8, cr0
56 nop
57 nop
58 nop
59 nop
60 nop
61.endm
62
63__INIT
64ENTRY(debug_exception_vector)
65 nop!
66 nop!
67 nop!
68 nop!
69 nop!
70 nop!
71 nop!
72 nop!
73
74ENTRY(general_exception_vector) # should move to addr 0x200
75 j general_exception
76 nop!
77 nop!
78 nop!
79 nop!
80 nop!
81 nop!
82
83ENTRY(interrupt_exception_vector) # should move to addr 0x210
84 j interrupt_exception
85 nop!
86 nop!
87 nop!
88 nop!
89 nop!
90 nop!
91
92 .section ".text", "ax"
93 .align 2;
94general_exception:
95 mfcr r31, cr2
96 nop
97 la r30, exception_handlers
98 andi r31, 0x1f # get ecr.exc_code
99 slli r31, r31, 2
100 add r30, r30, r31
101 lw r30, [r30]
102 br r30
103
104interrupt_exception:
105 SAVE_ALL
106 mfcr r4, cr2
107 nop
108 lw r16, [r28, TI_REGS]
109 sw r0, [r28, TI_REGS]
110 la r3, ret_from_irq
111 srli r4, r4, 18 # get ecr.ip[7:2], interrupt No.
112 mv r5, r0
113 j do_IRQ
114
115ENTRY(handle_nmi) # NMI #1
116 SAVE_ALL
117 mv r4, r0
118 la r8, nmi_exception_handler
119 brl r8
120 j restore_all
121
122ENTRY(handle_adelinsn) # AdEL-instruction #2
123 SAVE_ALL
124 mfcr r8, cr6
125 nop
126 nop
127 sw r8, [r0, PT_EMA]
128 mv r4, r0
129 la r8, do_adelinsn
130 brl r8
131 mv r4, r0
132 j ret_from_exception
133 nop
134
135ENTRY(handle_ibe) # BusEL-instruction #5
136 SAVE_ALL
137 mv r4, r0
138 la r8, do_be
139 brl r8
140 mv r4, r0
141 j ret_from_exception
142 nop
143
144ENTRY(handle_pel) # P-EL #6
145 SAVE_ALL
146 mv r4, r0
147 la r8, do_pel
148 brl r8
149 mv r4, r0
150 j ret_from_exception
151 nop
152
153ENTRY(handle_ccu) # CCU #8
154 SAVE_ALL
155 mv r4, r0
156 la r8, do_ccu
157 brl r8
158 mv r4, r0
159 j ret_from_exception
160 nop
161
162ENTRY(handle_ri) # RI #9
163 SAVE_ALL
164 mv r4, r0
165 la r8, do_ri
166 brl r8
167 mv r4, r0
168 j ret_from_exception
169 nop
170
171ENTRY(handle_tr) # Trap #10
172 SAVE_ALL
173 mv r4, r0
174 la r8, do_tr
175 brl r8
176 mv r4, r0
177 j ret_from_exception
178 nop
179
180ENTRY(handle_adedata) # AdES-instruction #12
181 SAVE_ALL
182 mfcr r8, cr6
183 nop
184 nop
185 sw r8, [r0, PT_EMA]
186 mv r4, r0
187 la r8, do_adedata
188 brl r8
189 mv r4, r0
190 j ret_from_exception
191 nop
192
193ENTRY(handle_cee) # CeE #16
194 SAVE_ALL
195 mv r4, r0
196 la r8, do_cee
197 brl r8
198 mv r4, r0
199 j ret_from_exception
200 nop
201
202ENTRY(handle_cpe) # CpE #17
203 SAVE_ALL
204 mv r4, r0
205 la r8, do_cpe
206 brl r8
207 mv r4, r0
208 j ret_from_exception
209 nop
210
211ENTRY(handle_dbe) # BusEL-data #18
212 SAVE_ALL
213 mv r4, r0
214 la r8, do_be
215 brl r8
216 mv r4, r0
217 j ret_from_exception
218 nop
219
220ENTRY(handle_reserved) # others
221 SAVE_ALL
222 mv r4, r0
223 la r8, do_reserved
224 brl r8
225 mv r4, r0
226 j ret_from_exception
227 nop
228
229#ifndef CONFIG_PREEMPT
230#define resume_kernel restore_all
231#else
232#define __ret_from_irq ret_from_exception
233#endif
234
235 .align 2
236#ifndef CONFIG_PREEMPT
237ENTRY(ret_from_exception)
238 disable_irq # preempt stop
239 nop
240 j __ret_from_irq
241 nop
242#endif
243
244ENTRY(ret_from_irq)
245 sw r16, [r28, TI_REGS]
246
247ENTRY(__ret_from_irq)
248 lw r8, [r0, PT_PSR] # returning to kernel mode?
249 andri.c r8, r8, KU_USER
250 beq resume_kernel
251
252resume_userspace:
253 disable_irq
254 lw r6, [r28, TI_FLAGS] # current->work
255 li r8, _TIF_WORK_MASK
256 and.c r8, r8, r6 # ignoring syscall_trace
257 bne work_pending
258 nop
259 j restore_all
260 nop
261
262#ifdef CONFIG_PREEMPT
263resume_kernel:
264 disable_irq
265 lw r8, [r28, TI_PRE_COUNT]
266 cmpz.c r8
267 bne r8, restore_all
268need_resched:
269 lw r8, [r28, TI_FLAGS]
270 andri.c r9, r8, _TIF_NEED_RESCHED
271 beq restore_all
272 lw r8, [r28, PT_PSR] # Interrupts off?
273 andri.c r8, r8, 1
274 beq restore_all
275 bl preempt_schedule_irq
276 nop
277 j need_resched
278 nop
279#endif
280
281ENTRY(ret_from_fork)
282 bl schedule_tail # r4=struct task_struct *prev
283
284ENTRY(syscall_exit)
285 nop
286 disable_irq
287 lw r6, [r28, TI_FLAGS] # current->work
288 li r8, _TIF_WORK_MASK
289 and.c r8, r6, r8
290 bne syscall_exit_work
291
292ENTRY(restore_all) # restore full frame
293 RESTORE_ALL_AND_RET
294
295work_pending:
296 andri.c r8, r6, _TIF_NEED_RESCHED # r6 is preloaded with TI_FLAGS
297 beq work_notifysig
298work_resched:
299 bl schedule
300 nop
301 disable_irq
302 lw r6, [r28, TI_FLAGS]
303 li r8, _TIF_WORK_MASK
304 and.c r8, r6, r8 # is there any work to be done
305 # other than syscall tracing?
306 beq restore_all
307 andri.c r8, r6, _TIF_NEED_RESCHED
308 bne work_resched
309
310work_notifysig:
311 mv r4, r0
312 li r5, 0
313 bl do_notify_resume # r6 already loaded
314 nop
315 j resume_userspace
316 nop
317
318ENTRY(syscall_exit_work)
319 li r8, _TIF_SYSCALL_TRACE
320 and.c r8, r8, r6 # r6 is preloaded with TI_FLAGS
321 beq work_pending # trace bit set?
322 nop
323 enable_irq
324 mv r4, r0
325 li r5, 1
326 bl do_syscall_trace
327 nop
328 b resume_userspace
329 nop
330
331.macro save_context reg
332 sw r12, [\reg, THREAD_REG12];
333 sw r13, [\reg, THREAD_REG13];
334 sw r14, [\reg, THREAD_REG14];
335 sw r15, [\reg, THREAD_REG15];
336 sw r16, [\reg, THREAD_REG16];
337 sw r17, [\reg, THREAD_REG17];
338 sw r18, [\reg, THREAD_REG18];
339 sw r19, [\reg, THREAD_REG19];
340 sw r20, [\reg, THREAD_REG20];
341 sw r21, [\reg, THREAD_REG21];
342 sw r29, [\reg, THREAD_REG29];
343 sw r2, [\reg, THREAD_REG2];
344 sw r0, [\reg, THREAD_REG0]
345.endm
346
347.macro restore_context reg
348 lw r12, [\reg, THREAD_REG12];
349 lw r13, [\reg, THREAD_REG13];
350 lw r14, [\reg, THREAD_REG14];
351 lw r15, [\reg, THREAD_REG15];
352 lw r16, [\reg, THREAD_REG16];
353 lw r17, [\reg, THREAD_REG17];
354 lw r18, [\reg, THREAD_REG18];
355 lw r19, [\reg, THREAD_REG19];
356 lw r20, [\reg, THREAD_REG20];
357 lw r21, [\reg, THREAD_REG21];
358 lw r29, [\reg, THREAD_REG29];
359 lw r0, [\reg, THREAD_REG0];
360 lw r2, [\reg, THREAD_REG2];
361 lw r3, [\reg, THREAD_REG3]
362.endm
363
364/*
365 * task_struct *resume(task_struct *prev, task_struct *next,
366 * struct thread_info *next_ti)
367 */
368ENTRY(resume)
369 mfcr r9, cr0
370 nop
371 nop
372 sw r9, [r4, THREAD_PSR]
373 save_context r4
374 sw r3, [r4, THREAD_REG3]
375
376 mv r28, r6
377 restore_context r5
378 mv r8, r6
379 addi r8, KERNEL_STACK_SIZE
380 subi r8, 32
381 la r9, kernelsp;
382 sw r8, [r9];
383
384 mfcr r9, cr0
385 ldis r7, 0x00ff
386 nop
387 and r9, r9, r7
388 lw r6, [r5, THREAD_PSR]
389 not r7, r7
390 and r6, r6, r7
391 or r6, r6, r9
392 mtcr r6, cr0
393 nop; nop; nop; nop; nop
394 br r3
395
396ENTRY(handle_sys)
397 SAVE_ALL
398 sw r8, [r0, 16] # argument 5 from user r8
399 sw r9, [r0, 20] # argument 6 from user r9
400 enable_irq
401
402 sw r4, [r0, PT_ORIG_R4] #for restart syscall
403 sw r7, [r0, PT_ORIG_R7] #for restart syscall
404 sw r27, [r0, PT_IS_SYSCALL] # it from syscall
405
406 lw r9, [r0, PT_EPC] # skip syscall on return
407 addi r9, 4
408 sw r9, [r0, PT_EPC]
409
410 cmpi.c r27, __NR_syscalls # check syscall number
411 bgtu illegal_syscall
412
413 slli r8, r27, 2 # get syscall routine
414 la r11, sys_call_table
415 add r11, r11, r8
416 lw r10, [r11] # get syscall entry
417
418 cmpz.c r10
419 beq illegal_syscall
420
421 lw r8, [r28, TI_FLAGS]
422 li r9, _TIF_SYSCALL_TRACE
423 and.c r8, r8, r9
424 bne syscall_trace_entry
425
426 brl r10 # Do The Real system call
427
428 cmpi.c r4, 0
429 blt 1f
430 ldi r8, 0
431 sw r8, [r0, PT_R7]
432 b 2f
4331:
434 cmpi.c r4, -MAX_ERRNO - 1
435 ble 2f
436 ldi r8, 0x1;
437 sw r8, [r0, PT_R7]
438 neg r4, r4
4392:
440 sw r4, [r0, PT_R4] # save result
441
442syscall_return:
443 disable_irq
444 lw r6, [r28, TI_FLAGS] # current->work
445 li r8, _TIF_WORK_MASK
446 and.c r8, r6, r8
447 bne syscall_return_work
448 j restore_all
449
450syscall_return_work:
451 j syscall_exit_work
452
453syscall_trace_entry:
454 mv r16, r10
455 mv r4, r0
456 li r5, 0
457 bl do_syscall_trace
458
459 mv r8, r16
460 lw r4, [r0, PT_R4] # Restore argument registers
461 lw r5, [r0, PT_R5]
462 lw r6, [r0, PT_R6]
463 lw r7, [r0, PT_R7]
464 brl r8
465
466 li r8, -MAX_ERRNO - 1
467 sw r8, [r0, PT_R7] # set error flag
468
469 neg r4, r4 # error
470 sw r4, [r0, PT_R0] # set flag for syscall
471 # restarting
4721: sw r4, [r0, PT_R2] # result
473 j syscall_exit
474
475illegal_syscall:
476 ldi r4, -ENOSYS # error
477 sw r4, [r0, PT_ORIG_R4]
478 sw r4, [r0, PT_R4]
479 ldi r9, 1 # set error flag
480 sw r9, [r0, PT_R7]
481 j syscall_return
482
483ENTRY(sys_execve)
484 mv r4, r0
485 la r8, score_execve
486 br r8
487
488ENTRY(sys_clone)
489 mv r4, r0
490 la r8, score_clone
491 br r8
492
493ENTRY(sys_rt_sigreturn)
494 mv r4, r0
495 la r8, score_rt_sigreturn
496 br r8
497
498ENTRY(sys_sigaltstack)
499 mv r4, r0
500 la r8, score_sigaltstack
501 br r8
502
503#ifdef __ARCH_WANT_SYSCALL_DEPRECATED
504ENTRY(sys_fork)
505 mv r4, r0
506 la r8, score_fork
507 br r8
508
509ENTRY(sys_vfork)
510 mv r4, r0
511 la r8, score_vfork
512 br r8
513#endif /* __ARCH_WANT_SYSCALL_DEPRECATED */
514
diff --git a/arch/score/kernel/head.S b/arch/score/kernel/head.S
new file mode 100644
index 000000000000..22a7e3c7292b
--- /dev/null
+++ b/arch/score/kernel/head.S
@@ -0,0 +1,70 @@
1/*
2 * arch/score/kernel/head.S
3 *
4 * Score Processor version.
5 *
6 * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
7 * Chen Liqin <liqin.chen@sunplusct.com>
8 * Lennox Wu <lennox.wu@sunplusct.com>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, see the file COPYING, or write
22 * to the Free Software Foundation, Inc.,
23 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
24 */
25#include <linux/init.h>
26#include <linux/linkage.h>
27
28#include <asm/asm-offsets.h>
29
30 .extern start_kernel
31 .global init_thread_union
32 .global kernelsp
33
34__INIT
35ENTRY(_stext)
36 la r30, __bss_start /* initialize BSS segment. */
37 la r31, _end
38 xor r8, r8, r8
39
401: cmp.c r31, r30
41 beq 2f
42
43 sw r8, [r30] /* clean memory. */
44 addi r30, 4
45 b 1b
46
472: la r28, init_thread_union /* set kernel stack. */
48 mv r0, r28
49 addi r0, KERNEL_STACK_SIZE - 32
50 la r30, kernelsp
51 sw r0, [r30]
52 subi r0, 4*4
53 xor r30, r30, r30
54 ori r30, 0x02 /* enable MMU. */
55 mtcr r30, cr4
56 nop
57 nop
58 nop
59 nop
60 nop
61 nop
62 nop
63
64 /* there is no parameter */
65 xor r4, r4, r4
66 xor r5, r5, r5
67 xor r6, r6, r6
68 xor r7, r7, r7
69 la r30, start_kernel /* jump to init_arch */
70 br r30
diff --git a/arch/score/kernel/init_task.c b/arch/score/kernel/init_task.c
new file mode 100644
index 000000000000..ff952f6c63fd
--- /dev/null
+++ b/arch/score/kernel/init_task.c
@@ -0,0 +1,47 @@
1/*
2 * arch/score/kernel/init_task.c
3 *
4 * Score Processor version.
5 *
6 * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, see the file COPYING, or write
20 * to the Free Software Foundation, Inc.,
21 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 */
23
24#include <linux/init_task.h>
25#include <linux/mqueue.h>
26
27static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
28static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
29
30/*
31 * Initial thread structure.
32 *
33 * We need to make sure that this is THREAD_SIZE aligned due to the
34 * way process stacks are handled. This is done by having a special
35 * "init_task" linker map entry..
36 */
37union thread_union init_thread_union
38 __attribute__((__section__(".data.init_task"), __aligned__(THREAD_SIZE))) =
39 { INIT_THREAD_INFO(init_task) };
40
41/*
42 * Initial task structure.
43 *
44 * All other task structs will be allocated on slabs in fork.c
45 */
46struct task_struct init_task = INIT_TASK(init_task);
47EXPORT_SYMBOL(init_task);
diff --git a/arch/score/kernel/irq.c b/arch/score/kernel/irq.c
new file mode 100644
index 000000000000..47647dde09ca
--- /dev/null
+++ b/arch/score/kernel/irq.c
@@ -0,0 +1,148 @@
1/*
2 * arch/score/kernel/irq.c
3 *
4 * Score Processor version.
5 *
6 * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
7 * Chen Liqin <liqin.chen@sunplusct.com>
8 * Lennox Wu <lennox.wu@sunplusct.com>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, see the file COPYING, or write
22 * to the Free Software Foundation, Inc.,
23 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
24 */
25
26#include <linux/interrupt.h>
27#include <linux/kernel_stat.h>
28#include <linux/seq_file.h>
29
30#include <asm/io.h>
31
32/* the interrupt controller is hardcoded at this address */
33#define SCORE_PIC ((u32 __iomem __force *)0x95F50000)
34
35#define INT_PNDL 0
36#define INT_PNDH 1
37#define INT_PRIORITY_M 2
38#define INT_PRIORITY_SG0 4
39#define INT_PRIORITY_SG1 5
40#define INT_PRIORITY_SG2 6
41#define INT_PRIORITY_SG3 7
42#define INT_MASKL 8
43#define INT_MASKH 9
44
45/*
46 * handles all normal device IRQs
47 */
48asmlinkage void do_IRQ(int irq)
49{
50 irq_enter();
51 generic_handle_irq(irq);
52 irq_exit();
53}
54
55static void score_mask(unsigned int irq_nr)
56{
57 unsigned int irq_source = 63 - irq_nr;
58
59 if (irq_source < 32)
60 __raw_writel((__raw_readl(SCORE_PIC + INT_MASKL) | \
61 (1 << irq_source)), SCORE_PIC + INT_MASKL);
62 else
63 __raw_writel((__raw_readl(SCORE_PIC + INT_MASKH) | \
64 (1 << (irq_source - 32))), SCORE_PIC + INT_MASKH);
65}
66
67static void score_unmask(unsigned int irq_nr)
68{
69 unsigned int irq_source = 63 - irq_nr;
70
71 if (irq_source < 32)
72 __raw_writel((__raw_readl(SCORE_PIC + INT_MASKL) & \
73 ~(1 << irq_source)), SCORE_PIC + INT_MASKL);
74 else
75 __raw_writel((__raw_readl(SCORE_PIC + INT_MASKH) & \
76 ~(1 << (irq_source - 32))), SCORE_PIC + INT_MASKH);
77}
78
79struct irq_chip score_irq_chip = {
80 .name = "Score7-level",
81 .mask = score_mask,
82 .mask_ack = score_mask,
83 .unmask = score_unmask,
84};
85
86/*
87 * initialise the interrupt system
88 */
89void __init init_IRQ(void)
90{
91 int index;
92 unsigned long target_addr;
93
94 for (index = 0; index < NR_IRQS; ++index)
95 set_irq_chip_and_handler(index, &score_irq_chip,
96 handle_level_irq);
97
98 for (target_addr = IRQ_VECTOR_BASE_ADDR;
99 target_addr <= IRQ_VECTOR_END_ADDR;
100 target_addr += IRQ_VECTOR_SIZE)
101 memcpy((void *)target_addr, \
102 interrupt_exception_vector, IRQ_VECTOR_SIZE);
103
104 __raw_writel(0xffffffff, SCORE_PIC + INT_MASKL);
105 __raw_writel(0xffffffff, SCORE_PIC + INT_MASKH);
106
107 __asm__ __volatile__(
108 "mtcr %0, cr3\n\t"
109 : : "r" (EXCEPTION_VECTOR_BASE_ADDR | \
110 VECTOR_ADDRESS_OFFSET_MODE16));
111}
112
113/*
114 * Generic, controller-independent functions:
115 */
116int show_interrupts(struct seq_file *p, void *v)
117{
118 int i = *(loff_t *)v, cpu;
119 struct irqaction *action;
120 unsigned long flags;
121
122 if (i == 0) {
123 seq_puts(p, " ");
124 for_each_online_cpu(cpu)
125 seq_printf(p, "CPU%d ", cpu);
126 seq_putc(p, '\n');
127 }
128
129 if (i < NR_IRQS) {
130 spin_lock_irqsave(&irq_desc[i].lock, flags);
131 action = irq_desc[i].action;
132 if (!action)
133 goto unlock;
134
135 seq_printf(p, "%3d: ", i);
136 seq_printf(p, "%10u ", kstat_irqs(i));
137 seq_printf(p, " %8s", irq_desc[i].chip->name ? : "-");
138 seq_printf(p, " %s", action->name);
139 for (action = action->next; action; action = action->next)
140 seq_printf(p, ", %s", action->name);
141
142 seq_putc(p, '\n');
143unlock:
144 spin_unlock_irqrestore(&irq_desc[i].lock, flags);
145 }
146
147 return 0;
148}
diff --git a/arch/score/kernel/module.c b/arch/score/kernel/module.c
new file mode 100644
index 000000000000..4de8d47becd3
--- /dev/null
+++ b/arch/score/kernel/module.c
@@ -0,0 +1,165 @@
1/*
2 * arch/score/kernel/module.c
3 *
4 * Score Processor version.
5 *
6 * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
7 * Chen Liqin <liqin.chen@sunplusct.com>
8 * Lennox Wu <lennox.wu@sunplusct.com>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, see the file COPYING, or write
22 * to the Free Software Foundation, Inc.,
23 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
24 */
25
26#include <linux/moduleloader.h>
27#include <linux/module.h>
28#include <linux/vmalloc.h>
29
30void *module_alloc(unsigned long size)
31{
32 return size ? vmalloc(size) : NULL;
33}
34
35/* Free memory returned from module_alloc */
36void module_free(struct module *mod, void *module_region)
37{
38 vfree(module_region);
39}
40
41int module_frob_arch_sections(Elf_Ehdr *hdr, Elf_Shdr *sechdrs,
42 char *secstrings, struct module *mod)
43{
44 return 0;
45}
46
47int apply_relocate(Elf_Shdr *sechdrs, const char *strtab,
48 unsigned int symindex, unsigned int relindex,
49 struct module *me)
50{
51 Elf32_Shdr *symsec = sechdrs + symindex;
52 Elf32_Shdr *relsec = sechdrs + relindex;
53 Elf32_Shdr *dstsec = sechdrs + relsec->sh_info;
54 Elf32_Rel *rel = (void *)relsec->sh_addr;
55 unsigned int i;
56
57 for (i = 0; i < relsec->sh_size / sizeof(Elf32_Rel); i++, rel++) {
58 unsigned long loc;
59 Elf32_Sym *sym;
60 s32 r_offset;
61
62 r_offset = ELF32_R_SYM(rel->r_info);
63 if ((r_offset < 0) ||
64 (r_offset > (symsec->sh_size / sizeof(Elf32_Sym)))) {
65 printk(KERN_ERR "%s: bad relocation, section %d reloc %d\n",
66 me->name, relindex, i);
67 return -ENOEXEC;
68 }
69
70 sym = ((Elf32_Sym *)symsec->sh_addr) + r_offset;
71
72 if ((rel->r_offset < 0) ||
73 (rel->r_offset > dstsec->sh_size - sizeof(u32))) {
74 printk(KERN_ERR "%s: out of bounds relocation, "
75 "section %d reloc %d offset %d size %d\n",
76 me->name, relindex, i, rel->r_offset,
77 dstsec->sh_size);
78 return -ENOEXEC;
79 }
80
81 loc = dstsec->sh_addr + rel->r_offset;
82 switch (ELF32_R_TYPE(rel->r_info)) {
83 case R_SCORE_NONE:
84 break;
85 case R_SCORE_ABS32:
86 *(unsigned long *)loc += sym->st_value;
87 break;
88 case R_SCORE_HI16:
89 break;
90 case R_SCORE_LO16: {
91 unsigned long hi16_offset, offset;
92 unsigned long uvalue;
93 unsigned long temp, temp_hi;
94 temp_hi = *((unsigned long *)loc - 1);
95 temp = *(unsigned long *)loc;
96
97 hi16_offset = (((((temp_hi) >> 16) & 0x3) << 15) |
98 ((temp_hi) & 0x7fff)) >> 1;
99 offset = ((temp >> 16 & 0x03) << 15) |
100 ((temp & 0x7fff) >> 1);
101 offset = (hi16_offset << 16) | (offset & 0xffff);
102 uvalue = sym->st_value + offset;
103 hi16_offset = (uvalue >> 16) << 1;
104
105 temp_hi = ((temp_hi) & (~(0x37fff))) |
106 (hi16_offset & 0x7fff) |
107 ((hi16_offset << 1) & 0x30000);
108 *((unsigned long *)loc - 1) = temp_hi;
109
110 offset = (uvalue & 0xffff) << 1;
111 temp = (temp & (~(0x37fff))) | (offset & 0x7fff) |
112 ((offset << 1) & 0x30000);
113 *(unsigned long *)loc = temp;
114 break;
115 }
116 case R_SCORE_24: {
117 unsigned long hi16_offset, offset;
118 unsigned long uvalue;
119 unsigned long temp;
120
121 temp = *(unsigned long *)loc;
122 offset = (temp & 0x03FF7FFE);
123 hi16_offset = (offset & 0xFFFF0000);
124 offset = (hi16_offset | ((offset & 0xFFFF) << 1)) >> 2;
125
126 uvalue = (sym->st_value + offset) >> 1;
127 uvalue = uvalue & 0x00ffffff;
128
129 temp = (temp & 0xfc008001) |
130 ((uvalue << 2) & 0x3ff0000) |
131 ((uvalue & 0x3fff) << 1);
132 *(unsigned long *)loc = temp;
133 break;
134 }
135 default:
136 printk(KERN_ERR "%s: unknown relocation: %u\n",
137 me->name, ELF32_R_TYPE(rel->r_info));
138 return -ENOEXEC;
139 }
140 }
141
142 return 0;
143}
144
145int apply_relocate_add(Elf_Shdr *sechdrs, const char *strtab,
146 unsigned int symindex, unsigned int relsec,
147 struct module *me)
148{
149 return 0;
150}
151
152/* Given an address, look for it in the module exception tables. */
153const struct exception_table_entry *search_module_dbetables(unsigned long addr)
154{
155 return NULL;
156}
157
158/* Put in dbe list if necessary. */
159int module_finalize(const Elf_Ehdr *hdr, const Elf_Shdr *sechdrs,
160 struct module *me)
161{
162 return 0;
163}
164
165void module_arch_cleanup(struct module *mod) {}
diff --git a/arch/score/kernel/process.c b/arch/score/kernel/process.c
new file mode 100644
index 000000000000..25d08030a883
--- /dev/null
+++ b/arch/score/kernel/process.c
@@ -0,0 +1,168 @@
1/*
2 * arch/score/kernel/process.c
3 *
4 * Score Processor version.
5 *
6 * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
7 * Chen Liqin <liqin.chen@sunplusct.com>
8 * Lennox Wu <lennox.wu@sunplusct.com>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, see the file COPYING, or write
22 * to the Free Software Foundation, Inc.,
23 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
24 */
25
26#include <linux/module.h>
27#include <linux/reboot.h>
28#include <linux/elfcore.h>
29#include <linux/pm.h>
30
31void (*pm_power_off)(void);
32EXPORT_SYMBOL(pm_power_off);
33
34/* If or when software machine-restart is implemented, add code here. */
35void machine_restart(char *command) {}
36
37/* If or when software machine-halt is implemented, add code here. */
38void machine_halt(void) {}
39
40/* If or when software machine-power-off is implemented, add code here. */
41void machine_power_off(void) {}
42
43/*
44 * The idle thread. There's no useful work to be
45 * done, so just try to conserve power and have a
46 * low exit latency (ie sit in a loop waiting for
47 * somebody to say that they'd like to reschedule)
48 */
49void __noreturn cpu_idle(void)
50{
51 /* endless idle loop with no priority at all */
52 while (1) {
53 while (!need_resched())
54 barrier();
55
56 preempt_enable_no_resched();
57 schedule();
58 preempt_disable();
59 }
60}
61
62void ret_from_fork(void);
63
64void start_thread(struct pt_regs *regs, unsigned long pc, unsigned long sp)
65{
66 unsigned long status;
67
68 /* New thread loses kernel privileges. */
69 status = regs->cp0_psr & ~(KU_MASK);
70 status |= KU_USER;
71 regs->cp0_psr = status;
72 regs->cp0_epc = pc;
73 regs->regs[0] = sp;
74}
75
76void exit_thread(void) {}
77
78/*
79 * When a process does an "exec", machine state like FPU and debug
80 * registers need to be reset. This is a hook function for that.
81 * Currently we don't have any such state to reset, so this is empty.
82 */
83void flush_thread(void) {}
84
85/*
86 * set up the kernel stack and exception frames for a new process
87 */
88int copy_thread(unsigned long clone_flags, unsigned long usp,
89 unsigned long unused,
90 struct task_struct *p, struct pt_regs *regs)
91{
92 struct thread_info *ti = task_thread_info(p);
93 struct pt_regs *childregs = task_pt_regs(p);
94
95 p->set_child_tid = NULL;
96 p->clear_child_tid = NULL;
97
98 *childregs = *regs;
99 childregs->regs[7] = 0; /* Clear error flag */
100 childregs->regs[4] = 0; /* Child gets zero as return value */
101 regs->regs[4] = p->pid;
102
103 if (childregs->cp0_psr & 0x8) { /* test kernel fork or user fork */
104 childregs->regs[0] = usp; /* user fork */
105 } else {
106 childregs->regs[28] = (unsigned long) ti; /* kernel fork */
107 childregs->regs[0] = (unsigned long) childregs;
108 }
109
110 p->thread.reg0 = (unsigned long) childregs;
111 p->thread.reg3 = (unsigned long) ret_from_fork;
112 p->thread.cp0_psr = 0;
113
114 return 0;
115}
116
117/* Fill in the fpu structure for a core dump. */
118int dump_fpu(struct pt_regs *regs, elf_fpregset_t *r)
119{
120 return 1;
121}
122
123static void __noreturn
124kernel_thread_helper(void *unused0, int (*fn)(void *),
125 void *arg, void *unused1)
126{
127 do_exit(fn(arg));
128}
129
130/*
131 * Create a kernel thread.
132 */
133long kernel_thread(int (*fn)(void *), void *arg, unsigned long flags)
134{
135 struct pt_regs regs;
136
137 memset(&regs, 0, sizeof(regs));
138
139 regs.regs[6] = (unsigned long) arg;
140 regs.regs[5] = (unsigned long) fn;
141 regs.cp0_epc = (unsigned long) kernel_thread_helper;
142 regs.cp0_psr = (regs.cp0_psr & ~(0x1|0x4|0x8)) | \
143 ((regs.cp0_psr & 0x3) << 2);
144
145 return do_fork(flags | CLONE_VM | CLONE_UNTRACED, \
146 0, &regs, 0, NULL, NULL);
147}
148
149unsigned long thread_saved_pc(struct task_struct *tsk)
150{
151 return task_pt_regs(tsk)->cp0_epc;
152}
153
154unsigned long get_wchan(struct task_struct *task)
155{
156 if (!task || task == current || task->state == TASK_RUNNING)
157 return 0;
158
159 if (!task_stack_page(task))
160 return 0;
161
162 return task_pt_regs(task)->cp0_epc;
163}
164
165unsigned long arch_align_stack(unsigned long sp)
166{
167 return sp;
168}
diff --git a/arch/score/kernel/ptrace.c b/arch/score/kernel/ptrace.c
new file mode 100644
index 000000000000..174c6422b096
--- /dev/null
+++ b/arch/score/kernel/ptrace.c
@@ -0,0 +1,382 @@
1/*
2 * arch/score/kernel/ptrace.c
3 *
4 * Score Processor version.
5 *
6 * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
7 * Chen Liqin <liqin.chen@sunplusct.com>
8 * Lennox Wu <lennox.wu@sunplusct.com>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, see the file COPYING, or write
22 * to the Free Software Foundation, Inc.,
23 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
24 */
25
26#include <linux/elf.h>
27#include <linux/kernel.h>
28#include <linux/mm.h>
29#include <linux/ptrace.h>
30#include <linux/regset.h>
31
32#include <asm/uaccess.h>
33
34/*
35 * retrieve the contents of SCORE userspace general registers
36 */
37static int genregs_get(struct task_struct *target,
38 const struct user_regset *regset,
39 unsigned int pos, unsigned int count,
40 void *kbuf, void __user *ubuf)
41{
42 const struct pt_regs *regs = task_pt_regs(target);
43 int ret;
44
45 /* skip 9 * sizeof(unsigned long) not use for pt_regs */
46 ret = user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf,
47 0, offsetof(struct pt_regs, regs));
48
49 /* r0 - r31, cel, ceh, sr0, sr1, sr2, epc, ema, psr, ecr, condition */
50 ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
51 regs->regs,
52 offsetof(struct pt_regs, regs),
53 offsetof(struct pt_regs, cp0_condition));
54
55 if (!ret)
56 ret = user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf,
57 sizeof(struct pt_regs), -1);
58
59 return ret;
60}
61
62/*
63 * update the contents of the SCORE userspace general registers
64 */
65static int genregs_set(struct task_struct *target,
66 const struct user_regset *regset,
67 unsigned int pos, unsigned int count,
68 const void *kbuf, const void __user *ubuf)
69{
70 struct pt_regs *regs = task_pt_regs(target);
71 int ret;
72
73 /* skip 9 * sizeof(unsigned long) */
74 ret = user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf,
75 0, offsetof(struct pt_regs, regs));
76
77 /* r0 - r31, cel, ceh, sr0, sr1, sr2, epc, ema, psr, ecr, condition */
78 ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
79 regs->regs,
80 offsetof(struct pt_regs, regs),
81 offsetof(struct pt_regs, cp0_condition));
82
83 if (!ret)
84 ret = user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf,
85 sizeof(struct pt_regs), -1);
86
87 return ret;
88}
89
90/*
91 * Define the register sets available on the score7 under Linux
92 */
93enum score7_regset {
94 REGSET_GENERAL,
95};
96
97static const struct user_regset score7_regsets[] = {
98 [REGSET_GENERAL] = {
99 .core_note_type = NT_PRSTATUS,
100 .n = ELF_NGREG,
101 .size = sizeof(long),
102 .align = sizeof(long),
103 .get = genregs_get,
104 .set = genregs_set,
105 },
106};
107
108static const struct user_regset_view user_score_native_view = {
109 .name = "score7",
110 .e_machine = EM_SCORE7,
111 .regsets = score7_regsets,
112 .n = ARRAY_SIZE(score7_regsets),
113};
114
115const struct user_regset_view *task_user_regset_view(struct task_struct *task)
116{
117 return &user_score_native_view;
118}
119
120static int is_16bitinsn(unsigned long insn)
121{
122 if ((insn & INSN32_MASK) == INSN32_MASK)
123 return 0;
124 else
125 return 1;
126}
127
128int
129read_tsk_long(struct task_struct *child,
130 unsigned long addr, unsigned long *res)
131{
132 int copied;
133
134 copied = access_process_vm(child, addr, res, sizeof(*res), 0);
135
136 return copied != sizeof(*res) ? -EIO : 0;
137}
138
139int
140read_tsk_short(struct task_struct *child,
141 unsigned long addr, unsigned short *res)
142{
143 int copied;
144
145 copied = access_process_vm(child, addr, res, sizeof(*res), 0);
146
147 return copied != sizeof(*res) ? -EIO : 0;
148}
149
150static int
151write_tsk_short(struct task_struct *child,
152 unsigned long addr, unsigned short val)
153{
154 int copied;
155
156 copied = access_process_vm(child, addr, &val, sizeof(val), 1);
157
158 return copied != sizeof(val) ? -EIO : 0;
159}
160
161static int
162write_tsk_long(struct task_struct *child,
163 unsigned long addr, unsigned long val)
164{
165 int copied;
166
167 copied = access_process_vm(child, addr, &val, sizeof(val), 1);
168
169 return copied != sizeof(val) ? -EIO : 0;
170}
171
172void user_enable_single_step(struct task_struct *child)
173{
174 /* far_epc is the target of branch */
175 unsigned int epc, far_epc = 0;
176 unsigned long epc_insn, far_epc_insn;
177 int ninsn_type; /* next insn type 0=16b, 1=32b */
178 unsigned int tmp, tmp2;
179 struct pt_regs *regs = task_pt_regs(child);
180 child->thread.single_step = 1;
181 child->thread.ss_nextcnt = 1;
182 epc = regs->cp0_epc;
183
184 read_tsk_long(child, epc, &epc_insn);
185
186 if (is_16bitinsn(epc_insn)) {
187 if ((epc_insn & J16M) == J16) {
188 tmp = epc_insn & 0xFFE;
189 epc = (epc & 0xFFFFF000) | tmp;
190 } else if ((epc_insn & B16M) == B16) {
191 child->thread.ss_nextcnt = 2;
192 tmp = (epc_insn & 0xFF) << 1;
193 tmp = tmp << 23;
194 tmp = (unsigned int)((int) tmp >> 23);
195 far_epc = epc + tmp;
196 epc += 2;
197 } else if ((epc_insn & BR16M) == BR16) {
198 child->thread.ss_nextcnt = 2;
199 tmp = (epc_insn >> 4) & 0xF;
200 far_epc = regs->regs[tmp];
201 epc += 2;
202 } else
203 epc += 2;
204 } else {
205 if ((epc_insn & J32M) == J32) {
206 tmp = epc_insn & 0x03FFFFFE;
207 tmp2 = tmp & 0x7FFF;
208 tmp = (((tmp >> 16) & 0x3FF) << 15) | tmp2;
209 epc = (epc & 0xFFC00000) | tmp;
210 } else if ((epc_insn & B32M) == B32) {
211 child->thread.ss_nextcnt = 2;
212 tmp = epc_insn & 0x03FFFFFE; /* discard LK bit */
213 tmp2 = tmp & 0x3FF;
214 tmp = (((tmp >> 16) & 0x3FF) << 10) | tmp2; /* 20bit */
215 tmp = tmp << 12;
216 tmp = (unsigned int)((int) tmp >> 12);
217 far_epc = epc + tmp;
218 epc += 4;
219 } else if ((epc_insn & BR32M) == BR32) {
220 child->thread.ss_nextcnt = 2;
221 tmp = (epc_insn >> 16) & 0x1F;
222 far_epc = regs->regs[tmp];
223 epc += 4;
224 } else
225 epc += 4;
226 }
227
228 if (child->thread.ss_nextcnt == 1) {
229 read_tsk_long(child, epc, &epc_insn);
230
231 if (is_16bitinsn(epc_insn)) {
232 write_tsk_short(child, epc, SINGLESTEP16_INSN);
233 ninsn_type = 0;
234 } else {
235 write_tsk_long(child, epc, SINGLESTEP32_INSN);
236 ninsn_type = 1;
237 }
238
239 if (ninsn_type == 0) { /* 16bits */
240 child->thread.insn1_type = 0;
241 child->thread.addr1 = epc;
242 /* the insn may have 32bit data */
243 child->thread.insn1 = (short)epc_insn;
244 } else {
245 child->thread.insn1_type = 1;
246 child->thread.addr1 = epc;
247 child->thread.insn1 = epc_insn;
248 }
249 } else {
250 /* branch! have two target child->thread.ss_nextcnt=2 */
251 read_tsk_long(child, epc, &epc_insn);
252 read_tsk_long(child, far_epc, &far_epc_insn);
253 if (is_16bitinsn(epc_insn)) {
254 write_tsk_short(child, epc, SINGLESTEP16_INSN);
255 ninsn_type = 0;
256 } else {
257 write_tsk_long(child, epc, SINGLESTEP32_INSN);
258 ninsn_type = 1;
259 }
260
261 if (ninsn_type == 0) { /* 16bits */
262 child->thread.insn1_type = 0;
263 child->thread.addr1 = epc;
264 /* the insn may have 32bit data */
265 child->thread.insn1 = (short)epc_insn;
266 } else {
267 child->thread.insn1_type = 1;
268 child->thread.addr1 = epc;
269 child->thread.insn1 = epc_insn;
270 }
271
272 if (is_16bitinsn(far_epc_insn)) {
273 write_tsk_short(child, far_epc, SINGLESTEP16_INSN);
274 ninsn_type = 0;
275 } else {
276 write_tsk_long(child, far_epc, SINGLESTEP32_INSN);
277 ninsn_type = 1;
278 }
279
280 if (ninsn_type == 0) { /* 16bits */
281 child->thread.insn2_type = 0;
282 child->thread.addr2 = far_epc;
283 /* the insn may have 32bit data */
284 child->thread.insn2 = (short)far_epc_insn;
285 } else {
286 child->thread.insn2_type = 1;
287 child->thread.addr2 = far_epc;
288 child->thread.insn2 = far_epc_insn;
289 }
290 }
291}
292
293void user_disable_single_step(struct task_struct *child)
294{
295 if (child->thread.insn1_type == 0)
296 write_tsk_short(child, child->thread.addr1,
297 child->thread.insn1);
298
299 if (child->thread.insn1_type == 1)
300 write_tsk_long(child, child->thread.addr1,
301 child->thread.insn1);
302
303 if (child->thread.ss_nextcnt == 2) { /* branch */
304 if (child->thread.insn1_type == 0)
305 write_tsk_short(child, child->thread.addr1,
306 child->thread.insn1);
307 if (child->thread.insn1_type == 1)
308 write_tsk_long(child, child->thread.addr1,
309 child->thread.insn1);
310 if (child->thread.insn2_type == 0)
311 write_tsk_short(child, child->thread.addr2,
312 child->thread.insn2);
313 if (child->thread.insn2_type == 1)
314 write_tsk_long(child, child->thread.addr2,
315 child->thread.insn2);
316 }
317
318 child->thread.single_step = 0;
319 child->thread.ss_nextcnt = 0;
320}
321
322void ptrace_disable(struct task_struct *child)
323{
324 user_disable_single_step(child);
325}
326
327long
328arch_ptrace(struct task_struct *child, long request, long addr, long data)
329{
330 int ret;
331 unsigned long __user *datap = (void __user *)data;
332
333 switch (request) {
334 case PTRACE_GETREGS:
335 ret = copy_regset_to_user(child, &user_score_native_view,
336 REGSET_GENERAL,
337 0, sizeof(struct pt_regs),
338 (void __user *)datap);
339 break;
340
341 case PTRACE_SETREGS:
342 ret = copy_regset_from_user(child, &user_score_native_view,
343 REGSET_GENERAL,
344 0, sizeof(struct pt_regs),
345 (const void __user *)datap);
346 break;
347
348 default:
349 ret = ptrace_request(child, request, addr, data);
350 break;
351 }
352
353 return ret;
354}
355
356/*
357 * Notification of system call entry/exit
358 * - triggered by current->work.syscall_trace
359 */
360asmlinkage void do_syscall_trace(struct pt_regs *regs, int entryexit)
361{
362 if (!(current->ptrace & PT_PTRACED))
363 return;
364
365 if (!test_thread_flag(TIF_SYSCALL_TRACE))
366 return;
367
368 /* The 0x80 provides a way for the tracing parent to distinguish
369 between a syscall stop and SIGTRAP delivery. */
370 ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD) ?
371 0x80 : 0));
372
373 /*
374 * this isn't the same as continuing with a signal, but it will do
375 * for normal use. strace only continues with a signal if the
376 * stopping signal is not SIGTRAP. -brl
377 */
378 if (current->exit_code) {
379 send_sig(current->exit_code, current, 1);
380 current->exit_code = 0;
381 }
382}
diff --git a/arch/score/kernel/setup.c b/arch/score/kernel/setup.c
new file mode 100644
index 000000000000..6a2503c75c4e
--- /dev/null
+++ b/arch/score/kernel/setup.c
@@ -0,0 +1,159 @@
1/*
2 * arch/score/kernel/setup.c
3 *
4 * Score Processor version.
5 *
6 * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
7 * Chen Liqin <liqin.chen@sunplusct.com>
8 * Lennox Wu <lennox.wu@sunplusct.com>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, see the file COPYING, or write
22 * to the Free Software Foundation, Inc.,
23 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
24 */
25
26#include <linux/bootmem.h>
27#include <linux/initrd.h>
28#include <linux/ioport.h>
29#include <linux/mm.h>
30#include <linux/seq_file.h>
31#include <linux/screen_info.h>
32
33#include <asm-generic/sections.h>
34#include <asm/setup.h>
35
36struct screen_info screen_info;
37unsigned long kernelsp;
38
39static char command_line[COMMAND_LINE_SIZE];
40static struct resource code_resource = { .name = "Kernel code",};
41static struct resource data_resource = { .name = "Kernel data",};
42
43static void __init bootmem_init(void)
44{
45 unsigned long start_pfn, bootmap_size;
46 unsigned long size = initrd_end - initrd_start;
47
48 start_pfn = PFN_UP(__pa(&_end));
49
50 min_low_pfn = PFN_UP(MEMORY_START);
51 max_low_pfn = PFN_UP(MEMORY_START + MEMORY_SIZE);
52
53 /* Initialize the boot-time allocator with low memory only. */
54 bootmap_size = init_bootmem_node(NODE_DATA(0), start_pfn,
55 min_low_pfn, max_low_pfn);
56 add_active_range(0, min_low_pfn, max_low_pfn);
57
58 free_bootmem(PFN_PHYS(start_pfn),
59 (max_low_pfn - start_pfn) << PAGE_SHIFT);
60 memory_present(0, start_pfn, max_low_pfn);
61
62 /* Reserve space for the bootmem bitmap. */
63 reserve_bootmem(PFN_PHYS(start_pfn), bootmap_size, BOOTMEM_DEFAULT);
64
65 if (size == 0) {
66 printk(KERN_INFO "Initrd not found or empty");
67 goto disable;
68 }
69
70 if (__pa(initrd_end) > PFN_PHYS(max_low_pfn)) {
71 printk(KERN_ERR "Initrd extends beyond end of memory");
72 goto disable;
73 }
74
75 /* Reserve space for the initrd bitmap. */
76 reserve_bootmem(__pa(initrd_start), size, BOOTMEM_DEFAULT);
77 initrd_below_start_ok = 1;
78
79 pr_info("Initial ramdisk at: 0x%lx (%lu bytes)\n",
80 initrd_start, size);
81 return;
82disable:
83 printk(KERN_CONT " - disabling initrd\n");
84 initrd_start = 0;
85 initrd_end = 0;
86}
87
88static void __init resource_init(void)
89{
90 struct resource *res;
91
92 code_resource.start = __pa(&_text);
93 code_resource.end = __pa(&_etext) - 1;
94 data_resource.start = __pa(&_etext);
95 data_resource.end = __pa(&_edata) - 1;
96
97 res = alloc_bootmem(sizeof(struct resource));
98 res->name = "System RAM";
99 res->start = MEMORY_START;
100 res->end = MEMORY_START + MEMORY_SIZE - 1;
101 res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
102 request_resource(&iomem_resource, res);
103
104 request_resource(res, &code_resource);
105 request_resource(res, &data_resource);
106}
107
108void __init setup_arch(char **cmdline_p)
109{
110 randomize_va_space = 0;
111 *cmdline_p = command_line;
112
113 cpu_cache_init();
114 tlb_init();
115 bootmem_init();
116 paging_init();
117 resource_init();
118}
119
120static int show_cpuinfo(struct seq_file *m, void *v)
121{
122 unsigned long n = (unsigned long) v - 1;
123
124 seq_printf(m, "processor\t\t: %ld\n", n);
125 seq_printf(m, "\n");
126
127 return 0;
128}
129
130static void *c_start(struct seq_file *m, loff_t *pos)
131{
132 unsigned long i = *pos;
133
134 return i < 1 ? (void *) (i + 1) : NULL;
135}
136
137static void *c_next(struct seq_file *m, void *v, loff_t *pos)
138{
139 ++*pos;
140 return c_start(m, pos);
141}
142
143static void c_stop(struct seq_file *m, void *v)
144{
145}
146
147const struct seq_operations cpuinfo_op = {
148 .start = c_start,
149 .next = c_next,
150 .stop = c_stop,
151 .show = show_cpuinfo,
152};
153
154static int __init topology_init(void)
155{
156 return 0;
157}
158
159subsys_initcall(topology_init);
diff --git a/arch/score/kernel/signal.c b/arch/score/kernel/signal.c
new file mode 100644
index 000000000000..aa57440e4973
--- /dev/null
+++ b/arch/score/kernel/signal.c
@@ -0,0 +1,361 @@
1/*
2 * arch/score/kernel/signal.c
3 *
4 * Score Processor version.
5 *
6 * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
7 * Chen Liqin <liqin.chen@sunplusct.com>
8 * Lennox Wu <lennox.wu@sunplusct.com>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, see the file COPYING, or write
22 * to the Free Software Foundation, Inc.,
23 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
24 */
25
26#include <linux/errno.h>
27#include <linux/signal.h>
28#include <linux/ptrace.h>
29#include <linux/unistd.h>
30#include <linux/uaccess.h>
31
32#include <asm/cacheflush.h>
33#include <asm/syscalls.h>
34#include <asm/ucontext.h>
35
36#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
37
38struct rt_sigframe {
39 u32 rs_ass[4]; /* argument save space */
40 u32 rs_code[2]; /* signal trampoline */
41 struct siginfo rs_info;
42 struct ucontext rs_uc;
43};
44
45static int setup_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc)
46{
47 int err = 0;
48 unsigned long reg;
49
50 reg = regs->cp0_epc; err |= __put_user(reg, &sc->sc_pc);
51 err |= __put_user(regs->cp0_psr, &sc->sc_psr);
52 err |= __put_user(regs->cp0_condition, &sc->sc_condition);
53
54
55#define save_gp_reg(i) { \
56 reg = regs->regs[i]; \
57 err |= __put_user(reg, &sc->sc_regs[i]); \
58} while (0)
59 save_gp_reg(0); save_gp_reg(1); save_gp_reg(2);
60 save_gp_reg(3); save_gp_reg(4); save_gp_reg(5);
61 save_gp_reg(6); save_gp_reg(7); save_gp_reg(8);
62 save_gp_reg(9); save_gp_reg(10); save_gp_reg(11);
63 save_gp_reg(12); save_gp_reg(13); save_gp_reg(14);
64 save_gp_reg(15); save_gp_reg(16); save_gp_reg(17);
65 save_gp_reg(18); save_gp_reg(19); save_gp_reg(20);
66 save_gp_reg(21); save_gp_reg(22); save_gp_reg(23);
67 save_gp_reg(24); save_gp_reg(25); save_gp_reg(26);
68 save_gp_reg(27); save_gp_reg(28); save_gp_reg(29);
69#undef save_gp_reg
70
71 reg = regs->ceh; err |= __put_user(reg, &sc->sc_mdceh);
72 reg = regs->cel; err |= __put_user(reg, &sc->sc_mdcel);
73 err |= __put_user(regs->cp0_ecr, &sc->sc_ecr);
74 err |= __put_user(regs->cp0_ema, &sc->sc_ema);
75
76 return err;
77}
78
79static int restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc)
80{
81 int err = 0;
82 u32 reg;
83
84 err |= __get_user(regs->cp0_epc, &sc->sc_pc);
85 err |= __get_user(regs->cp0_condition, &sc->sc_condition);
86
87 err |= __get_user(reg, &sc->sc_mdceh);
88 regs->ceh = (int) reg;
89 err |= __get_user(reg, &sc->sc_mdcel);
90 regs->cel = (int) reg;
91
92 err |= __get_user(reg, &sc->sc_psr);
93 regs->cp0_psr = (int) reg;
94 err |= __get_user(reg, &sc->sc_ecr);
95 regs->cp0_ecr = (int) reg;
96 err |= __get_user(reg, &sc->sc_ema);
97 regs->cp0_ema = (int) reg;
98
99#define restore_gp_reg(i) do { \
100 err |= __get_user(reg, &sc->sc_regs[i]); \
101 regs->regs[i] = reg; \
102} while (0)
103 restore_gp_reg(0); restore_gp_reg(1); restore_gp_reg(2);
104 restore_gp_reg(3); restore_gp_reg(4); restore_gp_reg(5);
105 restore_gp_reg(6); restore_gp_reg(7); restore_gp_reg(8);
106 restore_gp_reg(9); restore_gp_reg(10); restore_gp_reg(11);
107 restore_gp_reg(12); restore_gp_reg(13); restore_gp_reg(14);
108 restore_gp_reg(15); restore_gp_reg(16); restore_gp_reg(17);
109 restore_gp_reg(18); restore_gp_reg(19); restore_gp_reg(20);
110 restore_gp_reg(21); restore_gp_reg(22); restore_gp_reg(23);
111 restore_gp_reg(24); restore_gp_reg(25); restore_gp_reg(26);
112 restore_gp_reg(27); restore_gp_reg(28); restore_gp_reg(29);
113#undef restore_gp_reg
114
115 return err;
116}
117
118/*
119 * Determine which stack to use..
120 */
121static void __user *get_sigframe(struct k_sigaction *ka,
122 struct pt_regs *regs, size_t frame_size)
123{
124 unsigned long sp;
125
126 /* Default to using normal stack */
127 sp = regs->regs[0];
128 sp -= 32;
129
130 /* This is the X/Open sanctioned signal stack switching. */
131 if ((ka->sa.sa_flags & SA_ONSTACK) && (!on_sig_stack(sp)))
132 sp = current->sas_ss_sp + current->sas_ss_size;
133
134 return (void __user*)((sp - frame_size) & ~7);
135}
136
137asmlinkage long
138score_sigaltstack(struct pt_regs *regs)
139{
140 const stack_t __user *uss = (const stack_t __user *) regs->regs[4];
141 stack_t __user *uoss = (stack_t __user *) regs->regs[5];
142 unsigned long usp = regs->regs[0];
143
144 return do_sigaltstack(uss, uoss, usp);
145}
146
147asmlinkage long
148score_rt_sigreturn(struct pt_regs *regs)
149{
150 struct rt_sigframe __user *frame;
151 sigset_t set;
152 stack_t st;
153 int sig;
154
155 frame = (struct rt_sigframe __user *) regs->regs[0];
156 if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
157 goto badframe;
158 if (__copy_from_user(&set, &frame->rs_uc.uc_sigmask, sizeof(set)))
159 goto badframe;
160
161 sigdelsetmask(&set, ~_BLOCKABLE);
162 spin_lock_irq(&current->sighand->siglock);
163 current->blocked = set;
164 recalc_sigpending();
165 spin_unlock_irq(&current->sighand->siglock);
166
167 sig = restore_sigcontext(regs, &frame->rs_uc.uc_mcontext);
168 if (sig < 0)
169 goto badframe;
170 else if (sig)
171 force_sig(sig, current);
172
173 if (__copy_from_user(&st, &frame->rs_uc.uc_stack, sizeof(st)))
174 goto badframe;
175
176 /* It is more difficult to avoid calling this function than to
177 call it and ignore errors. */
178 do_sigaltstack((stack_t __user *)&st, NULL, regs->regs[0]);
179
180 __asm__ __volatile__(
181 "mv\tr0, %0\n\t"
182 "la\tr8, syscall_exit\n\t"
183 "br\tr8\n\t"
184 : : "r" (regs) : "r8");
185
186badframe:
187 force_sig(SIGSEGV, current);
188
189 return 0;
190}
191
192static int setup_rt_frame(struct k_sigaction *ka, struct pt_regs *regs,
193 int signr, sigset_t *set, siginfo_t *info)
194{
195 struct rt_sigframe __user *frame;
196 int err = 0;
197
198 frame = get_sigframe(ka, regs, sizeof(*frame));
199 if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
200 goto give_sigsegv;
201
202 /*
203 * Set up the return code ...
204 *
205 * li v0, __NR_rt_sigreturn
206 * syscall
207 */
208 err |= __put_user(0x87788000 + __NR_rt_sigreturn*2,
209 frame->rs_code + 0);
210 err |= __put_user(0x80008002, frame->rs_code + 1);
211 flush_cache_sigtramp((unsigned long) frame->rs_code);
212
213 err |= copy_siginfo_to_user(&frame->rs_info, info);
214 err |= __put_user(0, &frame->rs_uc.uc_flags);
215 err |= __put_user(NULL, &frame->rs_uc.uc_link);
216 err |= __put_user((void __user *)current->sas_ss_sp,
217 &frame->rs_uc.uc_stack.ss_sp);
218 err |= __put_user(sas_ss_flags(regs->regs[0]),
219 &frame->rs_uc.uc_stack.ss_flags);
220 err |= __put_user(current->sas_ss_size,
221 &frame->rs_uc.uc_stack.ss_size);
222 err |= setup_sigcontext(regs, &frame->rs_uc.uc_mcontext);
223 err |= __copy_to_user(&frame->rs_uc.uc_sigmask, set, sizeof(*set));
224
225 if (err)
226 goto give_sigsegv;
227
228 regs->regs[0] = (unsigned long) frame;
229 regs->regs[3] = (unsigned long) frame->rs_code;
230 regs->regs[4] = signr;
231 regs->regs[5] = (unsigned long) &frame->rs_info;
232 regs->regs[6] = (unsigned long) &frame->rs_uc;
233 regs->regs[29] = (unsigned long) ka->sa.sa_handler;
234 regs->cp0_epc = (unsigned long) ka->sa.sa_handler;
235
236 return 0;
237
238give_sigsegv:
239 if (signr == SIGSEGV)
240 ka->sa.sa_handler = SIG_DFL;
241 force_sig(SIGSEGV, current);
242 return -EFAULT;
243}
244
245static int handle_signal(unsigned long sig, siginfo_t *info,
246 struct k_sigaction *ka, sigset_t *oldset, struct pt_regs *regs)
247{
248 int ret;
249
250 if (regs->is_syscall) {
251 switch (regs->regs[4]) {
252 case ERESTART_RESTARTBLOCK:
253 case ERESTARTNOHAND:
254 regs->regs[4] = EINTR;
255 break;
256 case ERESTARTSYS:
257 if (!(ka->sa.sa_flags & SA_RESTART)) {
258 regs->regs[4] = EINTR;
259 break;
260 }
261 case ERESTARTNOINTR:
262 regs->regs[4] = regs->orig_r4;
263 regs->regs[7] = regs->orig_r7;
264 regs->cp0_epc -= 8;
265 }
266
267 regs->is_syscall = 0;
268 }
269
270 /*
271 * Set up the stack frame
272 */
273 ret = setup_rt_frame(ka, regs, sig, oldset, info);
274
275 spin_lock_irq(&current->sighand->siglock);
276 sigorsets(&current->blocked, &current->blocked, &ka->sa.sa_mask);
277 if (!(ka->sa.sa_flags & SA_NODEFER))
278 sigaddset(&current->blocked, sig);
279 recalc_sigpending();
280 spin_unlock_irq(&current->sighand->siglock);
281
282 return ret;
283}
284
285static void do_signal(struct pt_regs *regs)
286{
287 struct k_sigaction ka;
288 sigset_t *oldset;
289 siginfo_t info;
290 int signr;
291
292 /*
293 * We want the common case to go fast, which is why we may in certain
294 * cases get here from kernel mode. Just return without doing anything
295 * if so.
296 */
297 if (!user_mode(regs))
298 return;
299
300 if (test_thread_flag(TIF_RESTORE_SIGMASK))
301 oldset = &current->saved_sigmask;
302 else
303 oldset = &current->blocked;
304
305 signr = get_signal_to_deliver(&info, &ka, regs, NULL);
306 if (signr > 0) {
307 /* Actually deliver the signal. */
308 if (handle_signal(signr, &info, &ka, oldset, regs) == 0) {
309 /*
310 * A signal was successfully delivered; the saved
311 * sigmask will have been stored in the signal frame,
312 * and will be restored by sigreturn, so we can simply
313 * clear the TIF_RESTORE_SIGMASK flag.
314 */
315 if (test_thread_flag(TIF_RESTORE_SIGMASK))
316 clear_thread_flag(TIF_RESTORE_SIGMASK);
317 }
318
319 return;
320 }
321
322 if (regs->is_syscall) {
323 if (regs->regs[4] == ERESTARTNOHAND ||
324 regs->regs[4] == ERESTARTSYS ||
325 regs->regs[4] == ERESTARTNOINTR) {
326 regs->regs[4] = regs->orig_r4;
327 regs->regs[7] = regs->orig_r7;
328 regs->cp0_epc -= 8;
329 }
330
331 if (regs->regs[4] == ERESTART_RESTARTBLOCK) {
332 regs->regs[27] = __NR_restart_syscall;
333 regs->regs[4] = regs->orig_r4;
334 regs->regs[7] = regs->orig_r7;
335 regs->cp0_epc -= 8;
336 }
337
338 regs->is_syscall = 0; /* Don't deal with this again. */
339 }
340
341 /*
342 * If there's no signal to deliver, we just put the saved sigmask
343 * back
344 */
345 if (test_thread_flag(TIF_RESTORE_SIGMASK)) {
346 clear_thread_flag(TIF_RESTORE_SIGMASK);
347 sigprocmask(SIG_SETMASK, &current->saved_sigmask, NULL);
348 }
349}
350
351/*
352 * notification of userspace execution resumption
353 * - triggered by the TIF_WORK_MASK flags
354 */
355asmlinkage void do_notify_resume(struct pt_regs *regs, void *unused,
356 __u32 thread_info_flags)
357{
358 /* deal with pending signal delivery */
359 if (thread_info_flags & (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK))
360 do_signal(regs);
361}
diff --git a/arch/score/kernel/sys_call_table.c b/arch/score/kernel/sys_call_table.c
new file mode 100644
index 000000000000..287369b88c43
--- /dev/null
+++ b/arch/score/kernel/sys_call_table.c
@@ -0,0 +1,12 @@
1#include <linux/syscalls.h>
2#include <linux/signal.h>
3#include <linux/unistd.h>
4
5#include <asm/syscalls.h>
6
7#undef __SYSCALL
8#define __SYSCALL(nr, call) [nr] = (call),
9
10void *sys_call_table[__NR_syscalls] = {
11#include <asm/unistd.h>
12};
diff --git a/arch/score/kernel/sys_score.c b/arch/score/kernel/sys_score.c
new file mode 100644
index 000000000000..001249469866
--- /dev/null
+++ b/arch/score/kernel/sys_score.c
@@ -0,0 +1,151 @@
1/*
2 * arch/score/kernel/syscall.c
3 *
4 * Score Processor version.
5 *
6 * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
7 * Chen Liqin <liqin.chen@sunplusct.com>
8 * Lennox Wu <lennox.wu@sunplusct.com>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, see the file COPYING, or write
22 * to the Free Software Foundation, Inc.,
23 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
24 */
25
26#include <linux/file.h>
27#include <linux/fs.h>
28#include <linux/mm.h>
29#include <linux/mman.h>
30#include <linux/module.h>
31#include <linux/unistd.h>
32#include <linux/syscalls.h>
33#include <asm/syscalls.h>
34
35asmlinkage long
36sys_mmap2(unsigned long addr, unsigned long len, unsigned long prot,
37 unsigned long flags, unsigned long fd, unsigned long pgoff)
38{
39 int error = -EBADF;
40 struct file *file = NULL;
41
42 if (pgoff & (~PAGE_MASK >> 12))
43 return -EINVAL;
44
45 flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
46 if (!(flags & MAP_ANONYMOUS)) {
47 file = fget(fd);
48 if (!file)
49 return error;
50 }
51
52 down_write(&current->mm->mmap_sem);
53 error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
54 up_write(&current->mm->mmap_sem);
55
56 if (file)
57 fput(file);
58
59 return error;
60}
61
62asmlinkage long
63sys_mmap(unsigned long addr, unsigned long len, unsigned long prot,
64 unsigned long flags, unsigned long fd, off_t pgoff)
65{
66 return sys_mmap2(addr, len, prot, flags, fd, pgoff >> PAGE_SHIFT);
67}
68
69asmlinkage long
70score_fork(struct pt_regs *regs)
71{
72 return do_fork(SIGCHLD, regs->regs[0], regs, 0, NULL, NULL);
73}
74
75/*
76 * Clone a task - this clones the calling program thread.
77 * This is called indirectly via a small wrapper
78 */
79asmlinkage long
80score_clone(struct pt_regs *regs)
81{
82 unsigned long clone_flags;
83 unsigned long newsp;
84 int __user *parent_tidptr, *child_tidptr;
85
86 clone_flags = regs->regs[4];
87 newsp = regs->regs[5];
88 if (!newsp)
89 newsp = regs->regs[0];
90 parent_tidptr = (int __user *)regs->regs[6];
91 child_tidptr = (int __user *)regs->regs[8];
92
93 return do_fork(clone_flags, newsp, regs, 0,
94 parent_tidptr, child_tidptr);
95}
96
97asmlinkage long
98score_vfork(struct pt_regs *regs)
99{
100 return do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD,
101 regs->regs[0], regs, 0, NULL, NULL);
102}
103
104/*
105 * sys_execve() executes a new program.
106 * This is called indirectly via a small wrapper
107 */
108asmlinkage long
109score_execve(struct pt_regs *regs)
110{
111 int error;
112 char *filename;
113
114 filename = getname((char __user*)regs->regs[4]);
115 error = PTR_ERR(filename);
116 if (IS_ERR(filename))
117 return error;
118
119 error = do_execve(filename, (char __user *__user*)regs->regs[5],
120 (char __user *__user *) regs->regs[6], regs);
121
122 putname(filename);
123 return error;
124}
125
126/*
127 * Do a system call from kernel instead of calling sys_execve so we
128 * end up with proper pt_regs.
129 */
130int kernel_execve(const char *filename, char *const argv[], char *const envp[])
131{
132 register unsigned long __r4 asm("r4") = (unsigned long) filename;
133 register unsigned long __r5 asm("r5") = (unsigned long) argv;
134 register unsigned long __r6 asm("r6") = (unsigned long) envp;
135 register unsigned long __r7 asm("r7");
136
137 __asm__ __volatile__ (" \n"
138 "ldi r27, %5 \n"
139 "syscall \n"
140 "mv %0, r4 \n"
141 "mv %1, r7 \n"
142 : "=&r" (__r4), "=r" (__r7)
143 : "r" (__r4), "r" (__r5), "r" (__r6), "i" (__NR_execve)
144 : "r8", "r9", "r10", "r11", "r22", "r23", "r24", "r25",
145 "r26", "r27", "memory");
146
147 if (__r7 == 0)
148 return __r4;
149
150 return -__r4;
151}
diff --git a/arch/score/kernel/time.c b/arch/score/kernel/time.c
new file mode 100644
index 000000000000..f0a43affb201
--- /dev/null
+++ b/arch/score/kernel/time.c
@@ -0,0 +1,99 @@
1/*
2 * arch/score/kernel/time.c
3 *
4 * Score Processor version.
5 *
6 * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
7 * Chen Liqin <liqin.chen@sunplusct.com>
8 * Lennox Wu <lennox.wu@sunplusct.com>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, see the file COPYING, or write
22 * to the Free Software Foundation, Inc.,
23 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
24 */
25
26#include <linux/clockchips.h>
27#include <linux/interrupt.h>
28
29#include <asm/scoreregs.h>
30
31static irqreturn_t timer_interrupt(int irq, void *dev_id)
32{
33 struct clock_event_device *evdev = dev_id;
34
35 /* clear timer interrupt flag */
36 outl(1, P_TIMER0_CPP_REG);
37 evdev->event_handler(evdev);
38
39 return IRQ_HANDLED;
40}
41
42static struct irqaction timer_irq = {
43 .handler = timer_interrupt,
44 .flags = IRQF_DISABLED | IRQF_TIMER,
45 .name = "timer",
46};
47
48static int score_timer_set_next_event(unsigned long delta,
49 struct clock_event_device *evdev)
50{
51 outl((TMR_M_PERIODIC | TMR_IE_ENABLE), P_TIMER0_CTRL);
52 outl(delta, P_TIMER0_PRELOAD);
53 outl(inl(P_TIMER0_CTRL) | TMR_ENABLE, P_TIMER0_CTRL);
54
55 return 0;
56}
57
58static void score_timer_set_mode(enum clock_event_mode mode,
59 struct clock_event_device *evdev)
60{
61 switch (mode) {
62 case CLOCK_EVT_MODE_PERIODIC:
63 outl((TMR_M_PERIODIC | TMR_IE_ENABLE), P_TIMER0_CTRL);
64 outl(SYSTEM_CLOCK/HZ, P_TIMER0_PRELOAD);
65 outl(inl(P_TIMER0_CTRL) | TMR_ENABLE, P_TIMER0_CTRL);
66 break;
67 case CLOCK_EVT_MODE_ONESHOT:
68 case CLOCK_EVT_MODE_SHUTDOWN:
69 case CLOCK_EVT_MODE_RESUME:
70 case CLOCK_EVT_MODE_UNUSED:
71 break;
72 default:
73 BUG();
74 }
75}
76
77static struct clock_event_device score_clockevent = {
78 .name = "score_clockevent",
79 .features = CLOCK_EVT_FEAT_PERIODIC,
80 .shift = 16,
81 .set_next_event = score_timer_set_next_event,
82 .set_mode = score_timer_set_mode,
83};
84
85void __init time_init(void)
86{
87 timer_irq.dev_id = &score_clockevent;
88 setup_irq(IRQ_TIMER , &timer_irq);
89
90 /* setup COMPARE clockevent */
91 score_clockevent.mult = div_sc(SYSTEM_CLOCK, NSEC_PER_SEC,
92 score_clockevent.shift);
93 score_clockevent.max_delta_ns = clockevent_delta2ns((u32)~0,
94 &score_clockevent);
95 score_clockevent.min_delta_ns = clockevent_delta2ns(50,
96 &score_clockevent) + 1;
97 score_clockevent.cpumask = cpumask_of(0);
98 clockevents_register_device(&score_clockevent);
99}
diff --git a/arch/score/kernel/traps.c b/arch/score/kernel/traps.c
new file mode 100644
index 000000000000..0e46fb19a848
--- /dev/null
+++ b/arch/score/kernel/traps.c
@@ -0,0 +1,349 @@
1/*
2 * arch/score/kernel/traps.c
3 *
4 * Score Processor version.
5 *
6 * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
7 * Chen Liqin <liqin.chen@sunplusct.com>
8 * Lennox Wu <lennox.wu@sunplusct.com>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, see the file COPYING, or write
22 * to the Free Software Foundation, Inc.,
23 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
24 */
25
26#include <linux/module.h>
27#include <linux/sched.h>
28
29#include <asm/cacheflush.h>
30#include <asm/irq.h>
31#include <asm/irq_regs.h>
32
33unsigned long exception_handlers[32];
34
35/*
36 * The architecture-independent show_stack generator
37 */
38void show_stack(struct task_struct *task, unsigned long *sp)
39{
40 int i;
41 long stackdata;
42
43 sp = sp ? sp : (unsigned long *)&sp;
44
45 printk(KERN_NOTICE "Stack: ");
46 i = 1;
47 while ((long) sp & (PAGE_SIZE - 1)) {
48 if (i && ((i % 8) == 0))
49 printk(KERN_NOTICE "\n");
50 if (i > 40) {
51 printk(KERN_NOTICE " ...");
52 break;
53 }
54
55 if (__get_user(stackdata, sp++)) {
56 printk(KERN_NOTICE " (Bad stack address)");
57 break;
58 }
59
60 printk(KERN_NOTICE " %08lx", stackdata);
61 i++;
62 }
63 printk(KERN_NOTICE "\n");
64}
65
66static void show_trace(long *sp)
67{
68 int i;
69 long addr;
70
71 sp = sp ? sp : (long *) &sp;
72
73 printk(KERN_NOTICE "Call Trace: ");
74 i = 1;
75 while ((long) sp & (PAGE_SIZE - 1)) {
76 if (__get_user(addr, sp++)) {
77 if (i && ((i % 6) == 0))
78 printk(KERN_NOTICE "\n");
79 printk(KERN_NOTICE " (Bad stack address)\n");
80 break;
81 }
82
83 if (kernel_text_address(addr)) {
84 if (i && ((i % 6) == 0))
85 printk(KERN_NOTICE "\n");
86 if (i > 40) {
87 printk(KERN_NOTICE " ...");
88 break;
89 }
90
91 printk(KERN_NOTICE " [<%08lx>]", addr);
92 i++;
93 }
94 }
95 printk(KERN_NOTICE "\n");
96}
97
98static void show_code(unsigned int *pc)
99{
100 long i;
101
102 printk(KERN_NOTICE "\nCode:");
103
104 for (i = -3; i < 6; i++) {
105 unsigned long insn;
106 if (__get_user(insn, pc + i)) {
107 printk(KERN_NOTICE " (Bad address in epc)\n");
108 break;
109 }
110 printk(KERN_NOTICE "%c%08lx%c", (i ? ' ' : '<'),
111 insn, (i ? ' ' : '>'));
112 }
113}
114
115/*
116 * FIXME: really the generic show_regs should take a const pointer argument.
117 */
118void show_regs(struct pt_regs *regs)
119{
120 printk("r0 : %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
121 regs->regs[0], regs->regs[1], regs->regs[2], regs->regs[3],
122 regs->regs[4], regs->regs[5], regs->regs[6], regs->regs[7]);
123 printk("r8 : %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
124 regs->regs[8], regs->regs[9], regs->regs[10], regs->regs[11],
125 regs->regs[12], regs->regs[13], regs->regs[14], regs->regs[15]);
126 printk("r16: %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
127 regs->regs[16], regs->regs[17], regs->regs[18], regs->regs[19],
128 regs->regs[20], regs->regs[21], regs->regs[22], regs->regs[23]);
129 printk("r24: %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
130 regs->regs[24], regs->regs[25], regs->regs[26], regs->regs[27],
131 regs->regs[28], regs->regs[29], regs->regs[30], regs->regs[31]);
132
133 printk("CEH : %08lx\n", regs->ceh);
134 printk("CEL : %08lx\n", regs->cel);
135
136 printk("EMA:%08lx, epc:%08lx %s\nPSR: %08lx\nECR:%08lx\nCondition : %08lx\n",
137 regs->cp0_ema, regs->cp0_epc, print_tainted(), regs->cp0_psr,
138 regs->cp0_ecr, regs->cp0_condition);
139}
140
141static void show_registers(struct pt_regs *regs)
142{
143 show_regs(regs);
144 printk(KERN_NOTICE "Process %s (pid: %d, stackpage=%08lx)\n",
145 current->comm, current->pid, (unsigned long) current);
146 show_stack(current_thread_info()->task, (long *) regs->regs[0]);
147 show_trace((long *) regs->regs[0]);
148 show_code((unsigned int *) regs->cp0_epc);
149 printk(KERN_NOTICE "\n");
150}
151
152/*
153 * The architecture-independent dump_stack generator
154 */
155void dump_stack(void)
156{
157 show_stack(current_thread_info()->task,
158 (long *) get_irq_regs()->regs[0]);
159}
160EXPORT_SYMBOL(dump_stack);
161
162void __die(const char *str, struct pt_regs *regs, const char *file,
163 const char *func, unsigned long line)
164{
165 console_verbose();
166 printk("%s", str);
167 if (file && func)
168 printk(" in %s:%s, line %ld", file, func, line);
169 printk(":\n");
170 show_registers(regs);
171 do_exit(SIGSEGV);
172}
173
174void __die_if_kernel(const char *str, struct pt_regs *regs,
175 const char *file, const char *func, unsigned long line)
176{
177 if (!user_mode(regs))
178 __die(str, regs, file, func, line);
179}
180
181asmlinkage void do_adelinsn(struct pt_regs *regs)
182{
183 printk("do_ADE-linsn:ema:0x%08lx:epc:0x%08lx\n",
184 regs->cp0_ema, regs->cp0_epc);
185 die_if_kernel("do_ade execution Exception\n", regs);
186 force_sig(SIGBUS, current);
187}
188
189asmlinkage void do_adedata(struct pt_regs *regs)
190{
191 const struct exception_table_entry *fixup;
192 fixup = search_exception_tables(regs->cp0_epc);
193 if (fixup) {
194 regs->cp0_epc = fixup->fixup;
195 return;
196 }
197 printk("do_ADE-data:ema:0x%08lx:epc:0x%08lx\n",
198 regs->cp0_ema, regs->cp0_epc);
199 die_if_kernel("do_ade execution Exception\n", regs);
200 force_sig(SIGBUS, current);
201}
202
203asmlinkage void do_pel(struct pt_regs *regs)
204{
205 die_if_kernel("do_pel execution Exception", regs);
206 force_sig(SIGFPE, current);
207}
208
209asmlinkage void do_cee(struct pt_regs *regs)
210{
211 die_if_kernel("do_cee execution Exception", regs);
212 force_sig(SIGFPE, current);
213}
214
215asmlinkage void do_cpe(struct pt_regs *regs)
216{
217 die_if_kernel("do_cpe execution Exception", regs);
218 force_sig(SIGFPE, current);
219}
220
221asmlinkage void do_be(struct pt_regs *regs)
222{
223 die_if_kernel("do_be execution Exception", regs);
224 force_sig(SIGBUS, current);
225}
226
227asmlinkage void do_ov(struct pt_regs *regs)
228{
229 siginfo_t info;
230
231 die_if_kernel("do_ov execution Exception", regs);
232
233 info.si_code = FPE_INTOVF;
234 info.si_signo = SIGFPE;
235 info.si_errno = 0;
236 info.si_addr = (void *)regs->cp0_epc;
237 force_sig_info(SIGFPE, &info, current);
238}
239
240asmlinkage void do_tr(struct pt_regs *regs)
241{
242 die_if_kernel("do_tr execution Exception", regs);
243 force_sig(SIGTRAP, current);
244}
245
246asmlinkage void do_ri(struct pt_regs *regs)
247{
248 unsigned long epc_insn;
249 unsigned long epc = regs->cp0_epc;
250
251 read_tsk_long(current, epc, &epc_insn);
252 if (current->thread.single_step == 1) {
253 if ((epc == current->thread.addr1) ||
254 (epc == current->thread.addr2)) {
255 user_disable_single_step(current);
256 force_sig(SIGTRAP, current);
257 return;
258 } else
259 BUG();
260 } else if ((epc_insn == BREAKPOINT32_INSN) ||
261 ((epc_insn & 0x0000FFFF) == 0x7002) ||
262 ((epc_insn & 0xFFFF0000) == 0x70020000)) {
263 force_sig(SIGTRAP, current);
264 return;
265 } else {
266 die_if_kernel("do_ri execution Exception", regs);
267 force_sig(SIGILL, current);
268 }
269}
270
271asmlinkage void do_ccu(struct pt_regs *regs)
272{
273 die_if_kernel("do_ccu execution Exception", regs);
274 force_sig(SIGILL, current);
275}
276
277asmlinkage void do_reserved(struct pt_regs *regs)
278{
279 /*
280 * Game over - no way to handle this if it ever occurs. Most probably
281 * caused by a new unknown cpu type or after another deadly
282 * hard/software error.
283 */
284 die_if_kernel("do_reserved execution Exception", regs);
285 show_regs(regs);
286 panic("Caught reserved exception - should not happen.");
287}
288
289/*
290 * NMI exception handler.
291 */
292void nmi_exception_handler(struct pt_regs *regs)
293{
294 die_if_kernel("nmi_exception_handler execution Exception", regs);
295 die("NMI", regs);
296}
297
298/* Install CPU exception handler */
299void *set_except_vector(int n, void *addr)
300{
301 unsigned long handler = (unsigned long) addr;
302 unsigned long old_handler = exception_handlers[n];
303
304 exception_handlers[n] = handler;
305 return (void *)old_handler;
306}
307
308void __init trap_init(void)
309{
310 int i;
311
312 pgd_current = (unsigned long)init_mm.pgd;
313 /* DEBUG EXCEPTION */
314 memcpy((void *)DEBUG_VECTOR_BASE_ADDR,
315 &debug_exception_vector, DEBUG_VECTOR_SIZE);
316 /* NMI EXCEPTION */
317 memcpy((void *)GENERAL_VECTOR_BASE_ADDR,
318 &general_exception_vector, GENERAL_VECTOR_SIZE);
319
320 /*
321 * Initialise exception handlers
322 */
323 for (i = 0; i <= 31; i++)
324 set_except_vector(i, handle_reserved);
325
326 set_except_vector(1, handle_nmi);
327 set_except_vector(2, handle_adelinsn);
328 set_except_vector(3, handle_tlb_refill);
329 set_except_vector(4, handle_tlb_invaild);
330 set_except_vector(5, handle_ibe);
331 set_except_vector(6, handle_pel);
332 set_except_vector(7, handle_sys);
333 set_except_vector(8, handle_ccu);
334 set_except_vector(9, handle_ri);
335 set_except_vector(10, handle_tr);
336 set_except_vector(11, handle_adedata);
337 set_except_vector(12, handle_adedata);
338 set_except_vector(13, handle_tlb_refill);
339 set_except_vector(14, handle_tlb_invaild);
340 set_except_vector(15, handle_mod);
341 set_except_vector(16, handle_cee);
342 set_except_vector(17, handle_cpe);
343 set_except_vector(18, handle_dbe);
344 flush_icache_range(DEBUG_VECTOR_BASE_ADDR, IRQ_VECTOR_BASE_ADDR);
345
346 atomic_inc(&init_mm.mm_count);
347 current->active_mm = &init_mm;
348 cpu_cache_init();
349}
diff --git a/arch/score/kernel/vmlinux.lds.S b/arch/score/kernel/vmlinux.lds.S
new file mode 100644
index 000000000000..f85569831d5c
--- /dev/null
+++ b/arch/score/kernel/vmlinux.lds.S
@@ -0,0 +1,148 @@
1/*
2 * arch/score/kernel/vmlinux.lds.S
3 *
4 * Score Processor version.
5 *
6 * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
7 * Chen Liqin <liqin.chen@sunplusct.com>
8 * Lennox Wu <lennox.wu@sunplusct.com>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, see the file COPYING, or write
22 * to the Free Software Foundation, Inc.,
23 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
24 */
25
26#include <asm-generic/vmlinux.lds.h>
27
28OUTPUT_ARCH(score)
29ENTRY(_stext)
30
31jiffies = jiffies_64;
32
33SECTIONS
34{
35 . = CONFIG_MEMORY_START + 0x2000;
36 /* read-only */
37 .text : {
38 _text = .; /* Text and read-only data */
39 TEXT_TEXT
40 SCHED_TEXT
41 LOCK_TEXT
42 KPROBES_TEXT
43 *(.text.*)
44 *(.fixup)
45 . = ALIGN (4) ;
46 _etext = .; /* End of text section */
47 }
48
49 . = ALIGN(16);
50 RODATA
51
52 /* Exception table */
53 . = ALIGN(16);
54 __ex_table : {
55 __start___ex_table = .;
56 *(__ex_table)
57 __stop___ex_table = .;
58 }
59
60 /* writeable */
61 .data ALIGN (4096): {
62 *(.data.init_task)
63
64 DATA_DATA
65 CONSTRUCTORS
66 }
67
68 /* We want the small data sections together, so single-instruction offsets
69 can access them all, and initialized data all before uninitialized, so
70 we can shorten the on-disk segment size. */
71 . = ALIGN(8);
72 .sdata : {
73 *(.sdata)
74 }
75
76 . = ALIGN(32);
77 .data.cacheline_aligned : {
78 *(.data.cacheline_aligned)
79 }
80 _edata = .; /* End of data section */
81
82 /* will be freed after init */
83 . = ALIGN(4096); /* Init code and data */
84 __init_begin = .;
85
86 . = ALIGN(4096);
87 .init.text : {
88 _sinittext = .;
89 INIT_TEXT
90 _einittext = .;
91 }
92 .init.data : {
93 INIT_DATA
94 }
95 . = ALIGN(16);
96 .init.setup : {
97 __setup_start = .;
98 *(.init.setup)
99 __setup_end = .;
100 }
101
102 .initcall.init : {
103 __initcall_start = .;
104 INITCALLS
105 __initcall_end = .;
106 }
107
108 .con_initcall.init : {
109 __con_initcall_start = .;
110 *(.con_initcall.init)
111 __con_initcall_end = .;
112 }
113 SECURITY_INIT
114
115 /* .exit.text is discarded at runtime, not link time, to deal with
116 * references from .rodata
117 */
118 .exit.text : {
119 EXIT_TEXT
120 }
121 .exit.data : {
122 EXIT_DATA
123 }
124#if defined(CONFIG_BLK_DEV_INITRD)
125 .init.ramfs ALIGN(4096): {
126 __initramfs_start = .;
127 *(.init.ramfs)
128 __initramfs_end = .;
129 . = ALIGN(4);
130 LONG(0);
131 }
132#endif
133 . = ALIGN(4096);
134 __init_end = .;
135 /* freed after init ends here */
136
137 __bss_start = .; /* BSS */
138 .sbss : {
139 *(.sbss)
140 *(.scommon)
141 }
142 .bss : {
143 *(.bss)
144 *(COMMON)
145 }
146 __bss_stop = .;
147 _end = .;
148}
diff --git a/arch/score/lib/Makefile b/arch/score/lib/Makefile
new file mode 100644
index 000000000000..553e30e81faf
--- /dev/null
+++ b/arch/score/lib/Makefile
@@ -0,0 +1,8 @@
1#
2# Makefile for SCORE-specific library files..
3#
4
5lib-y += string.o checksum.o checksum_copy.o
6
7# libgcc-style stuff needed in the kernel
8obj-y += ashldi3.o ashrdi3.o cmpdi2.o lshrdi3.o ucmpdi2.o
diff --git a/arch/score/lib/ashldi3.c b/arch/score/lib/ashldi3.c
new file mode 100644
index 000000000000..15691a910431
--- /dev/null
+++ b/arch/score/lib/ashldi3.c
@@ -0,0 +1,46 @@
1/*
2 * arch/score/lib/ashldi3.c
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, see the file COPYING, or write
16 * to the Free Software Foundation, Inc.,
17 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18 */
19
20#include <linux/module.h>
21#include "libgcc.h"
22
23long long __ashldi3(long long u, word_type b)
24{
25 DWunion uu, w;
26 word_type bm;
27
28 if (b == 0)
29 return u;
30
31 uu.ll = u;
32 bm = 32 - b;
33
34 if (bm <= 0) {
35 w.s.low = 0;
36 w.s.high = (unsigned int) uu.s.low << -bm;
37 } else {
38 const unsigned int carries = (unsigned int) uu.s.low >> bm;
39
40 w.s.low = (unsigned int) uu.s.low << b;
41 w.s.high = ((unsigned int) uu.s.high << b) | carries;
42 }
43
44 return w.ll;
45}
46EXPORT_SYMBOL(__ashldi3);
diff --git a/arch/score/lib/ashrdi3.c b/arch/score/lib/ashrdi3.c
new file mode 100644
index 000000000000..d9814a5d8d30
--- /dev/null
+++ b/arch/score/lib/ashrdi3.c
@@ -0,0 +1,48 @@
1/*
2 * arch/score/lib/ashrdi3.c
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, see the file COPYING, or write
16 * to the Free Software Foundation, Inc.,
17 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18 */
19
20#include <linux/module.h>
21#include "libgcc.h"
22
23long long __ashrdi3(long long u, word_type b)
24{
25 DWunion uu, w;
26 word_type bm;
27
28 if (b == 0)
29 return u;
30
31 uu.ll = u;
32 bm = 32 - b;
33
34 if (bm <= 0) {
35 /* w.s.high = 1..1 or 0..0 */
36 w.s.high =
37 uu.s.high >> 31;
38 w.s.low = uu.s.high >> -bm;
39 } else {
40 const unsigned int carries = (unsigned int) uu.s.high << bm;
41
42 w.s.high = uu.s.high >> b;
43 w.s.low = ((unsigned int) uu.s.low >> b) | carries;
44 }
45
46 return w.ll;
47}
48EXPORT_SYMBOL(__ashrdi3);
diff --git a/arch/score/lib/checksum.S b/arch/score/lib/checksum.S
new file mode 100644
index 000000000000..706157edc7d5
--- /dev/null
+++ b/arch/score/lib/checksum.S
@@ -0,0 +1,255 @@
1/*
2 * arch/score/lib/csum_partial.S
3 *
4 * Score Processor version.
5 *
6 * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
7 * Lennox Wu <lennox.wu@sunplusct.com>
8 * Chen Liqin <liqin.chen@sunplusct.com>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, see the file COPYING, or write
22 * to the Free Software Foundation, Inc.,
23 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
24 */
25#include <linux/linkage.h>
26
27#define ADDC(sum,reg) \
28 add sum, sum, reg; \
29 cmp.c reg, sum; \
30 bleu 9f; \
31 addi sum, 0x1; \
329:
33
34#define CSUM_BIGCHUNK(src, offset, sum) \
35 lw r8, [src, offset + 0x00]; \
36 lw r9, [src, offset + 0x04]; \
37 lw r10, [src, offset + 0x08]; \
38 lw r11, [src, offset + 0x0c]; \
39 ADDC(sum, r8); \
40 ADDC(sum, r9); \
41 ADDC(sum, r10); \
42 ADDC(sum, r11); \
43 lw r8, [src, offset + 0x10]; \
44 lw r9, [src, offset + 0x14]; \
45 lw r10, [src, offset + 0x18]; \
46 lw r11, [src, offset + 0x1c]; \
47 ADDC(sum, r8); \
48 ADDC(sum, r9); \
49 ADDC(sum, r10); \
50 ADDC(sum, r11); \
51
52#define src r4
53#define dest r5
54#define sum r27
55
56 .text
57/* unknown src alignment and < 8 bytes to go */
58small_csumcpy:
59 mv r5, r10
60 ldi r9, 0x0
61 cmpi.c r25, 0x1
62 beq pass_small_set_t7 /*already set, jump to pass_small_set_t7*/
63 andri.c r25,r4 , 0x1 /*Is src 2 bytes aligned?*/
64
65pass_small_set_t7:
66 beq aligned
67 cmpi.c r5, 0x0
68 beq fold
69 lbu r9, [src]
70 slli r9,r9, 0x8 /*Little endian*/
71 ADDC(sum, r9)
72 addi src, 0x1
73 subi.c r5, 0x1
74
75 /*len still a full word */
76aligned:
77 andri.c r8, r5, 0x4 /*Len >= 4?*/
78 beq len_less_4bytes
79
80 /* Still a full word (4byte) to go,and the src is word aligned.*/
81 andri.c r8, src, 0x3 /*src is 4bytes aligned, so use LW!!*/
82 beq four_byte_aligned
83 lhu r9, [src]
84 addi src, 2
85 ADDC(sum, r9)
86 lhu r9, [src]
87 addi src, 2
88 ADDC(sum, r9)
89 b len_less_4bytes
90
91four_byte_aligned: /* Len >=4 and four byte aligned */
92 lw r9, [src]
93 addi src, 4
94 ADDC(sum, r9)
95
96len_less_4bytes: /* 2 byte aligned aligned and length<4B */
97 andri.c r8, r5, 0x2
98 beq len_less_2bytes
99 lhu r9, [src]
100 addi src, 0x2 /* src+=2 */
101 ADDC(sum, r9)
102
103len_less_2bytes: /* len = 1 */
104 andri.c r8, r5, 0x1
105 beq fold /* less than 2 and not equal 1--> len=0 -> fold */
106 lbu r9, [src]
107
108fold_ADDC:
109 ADDC(sum, r9)
110fold:
111 /* fold checksum */
112 slli r26, sum, 16
113 add sum, sum, r26
114 cmp.c r26, sum
115 srli sum, sum, 16
116 bleu 1f /* if r26<=sum */
117 addi sum, 0x1 /* r26>sum */
1181:
119 /* odd buffer alignment? r25 was set in csum_partial */
120 cmpi.c r25, 0x0
121 beq 1f
122 slli r26, sum, 8
123 srli sum, sum, 8
124 or sum, sum, r26
125 andi sum, 0xffff
1261:
127 .set optimize
128 /* Add the passed partial csum. */
129 ADDC(sum, r6)
130 mv r4, sum
131 br r3
132 .set volatile
133
134 .align 5
135ENTRY(csum_partial)
136 ldi sum, 0
137 ldi r25, 0
138 mv r10, r5
139 cmpi.c r5, 0x8
140 blt small_csumcpy /* < 8(singed) bytes to copy */
141 cmpi.c r5, 0x0
142 beq out
143 andri.c r25, src, 0x1 /* odd buffer? */
144
145 beq word_align
146hword_align: /* 1 byte */
147 lbu r8, [src]
148 subi r5, 0x1
149 slli r8, r8, 8
150 ADDC(sum, r8)
151 addi src, 0x1
152
153word_align: /* 2 bytes */
154 andri.c r8, src, 0x2 /* 4bytes(dword)_aligned? */
155 beq dword_align /* not, maybe dword_align */
156 lhu r8, [src]
157 subi r5, 0x2
158 ADDC(sum, r8)
159 addi src, 0x2
160
161dword_align: /* 4bytes */
162 mv r26, r5 /* maybe useless when len >=56 */
163 ldi r8, 56
164 cmp.c r8, r5
165 bgtu do_end_words /* if a1(len)<t0(56) ,unsigned */
166 andri.c r26, src, 0x4
167 beq qword_align
168 lw r8, [src]
169 subi r5, 0x4
170 ADDC(sum, r8)
171 addi src, 0x4
172
173qword_align: /* 8 bytes */
174 andri.c r26, src, 0x8
175 beq oword_align
176 lw r8, [src, 0x0]
177 lw r9, [src, 0x4]
178 subi r5, 0x8 /* len-=0x8 */
179 ADDC(sum, r8)
180 ADDC(sum, r9)
181 addi src, 0x8
182
183oword_align: /* 16bytes */
184 andri.c r26, src, 0x10
185 beq begin_movement
186 lw r10, [src, 0x08]
187 lw r11, [src, 0x0c]
188 lw r8, [src, 0x00]
189 lw r9, [src, 0x04]
190 ADDC(sum, r10)
191 ADDC(sum, r11)
192 ADDC(sum, r8)
193 ADDC(sum, r9)
194 subi r5, 0x10
195 addi src, 0x10
196
197begin_movement:
198 srli.c r26, r5, 0x7 /* len>=128? */
199 beq 1f /* len<128 */
200
201/* r26 is the result that computed in oword_align */
202move_128bytes:
203 CSUM_BIGCHUNK(src, 0x00, sum)
204 CSUM_BIGCHUNK(src, 0x20, sum)
205 CSUM_BIGCHUNK(src, 0x40, sum)
206 CSUM_BIGCHUNK(src, 0x60, sum)
207 subi.c r26, 0x01 /* r26 equals len/128 */
208 addi src, 0x80
209 bne move_128bytes
210
2111: /* len<128,we process 64byte here */
212 andri.c r10, r5, 0x40
213 beq 1f
214
215move_64bytes:
216 CSUM_BIGCHUNK(src, 0x00, sum)
217 CSUM_BIGCHUNK(src, 0x20, sum)
218 addi src, 0x40
219
2201: /* len<64 */
221 andri r26, r5, 0x1c /* 0x1c=28 */
222 andri.c r10, r5, 0x20
223 beq do_end_words /* decided by andri */
224
225move_32bytes:
226 CSUM_BIGCHUNK(src, 0x00, sum)
227 andri r26, r5, 0x1c
228 addri src, src, 0x20
229
230do_end_words: /* len<32 */
231 /* r26 was set already in dword_align */
232 cmpi.c r26, 0x0
233 beq maybe_end_cruft /* len<28 or len<56 */
234 srli r26, r26, 0x2
235
236end_words:
237 lw r8, [src]
238 subi.c r26, 0x1 /* unit is 4 byte */
239 ADDC(sum, r8)
240 addi src, 0x4
241 cmpi.c r26, 0x0
242 bne end_words /* r26!=0 */
243
244maybe_end_cruft: /* len<4 */
245 andri r10, r5, 0x3
246
247small_memcpy:
248 mv r5, r10
249 j small_csumcpy
250
251out:
252 mv r4, sum
253 br r3
254
255END(csum_partial)
diff --git a/arch/score/lib/checksum_copy.c b/arch/score/lib/checksum_copy.c
new file mode 100644
index 000000000000..04565dd3ded8
--- /dev/null
+++ b/arch/score/lib/checksum_copy.c
@@ -0,0 +1,52 @@
1/*
2 * arch/score/lib/csum_partial_copy.c
3 *
4 * Score Processor version.
5 *
6 * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
7 * Lennox Wu <lennox.wu@sunplusct.com>
8 * Chen Liqin <liqin.chen@sunplusct.com>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, see the file COPYING, or write
22 * to the Free Software Foundation, Inc.,
23 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
24 */
25
26#include <net/checksum.h>
27
28#include <asm/uaccess.h>
29
30unsigned int csum_partial_copy(const char *src, char *dst,
31 int len, unsigned int sum)
32{
33 sum = csum_partial(src, len, sum);
34 memcpy(dst, src, len);
35
36 return sum;
37}
38
39unsigned int csum_partial_copy_from_user(const char *src, char *dst,
40 int len, unsigned int sum,
41 int *err_ptr)
42{
43 int missing;
44
45 missing = copy_from_user(dst, src, len);
46 if (missing) {
47 memset(dst + len - missing, 0, missing);
48 *err_ptr = -EFAULT;
49 }
50
51 return csum_partial(dst, len, sum);
52}
diff --git a/arch/score/lib/cmpdi2.c b/arch/score/lib/cmpdi2.c
new file mode 100644
index 000000000000..1ed5290c66ed
--- /dev/null
+++ b/arch/score/lib/cmpdi2.c
@@ -0,0 +1,44 @@
1/*
2 * arch/score/lib/cmpdi2.c
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, see the file COPYING, or write
16 * to the Free Software Foundation, Inc.,
17 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18 */
19
20#include <linux/module.h>
21#include "libgcc.h"
22
23word_type __cmpdi2(long long a, long long b)
24{
25 const DWunion au = {
26 .ll = a
27 };
28 const DWunion bu = {
29 .ll = b
30 };
31
32 if (au.s.high < bu.s.high)
33 return 0;
34 else if (au.s.high > bu.s.high)
35 return 2;
36
37 if ((unsigned int) au.s.low < (unsigned int) bu.s.low)
38 return 0;
39 else if ((unsigned int) au.s.low > (unsigned int) bu.s.low)
40 return 2;
41
42 return 1;
43}
44EXPORT_SYMBOL(__cmpdi2);
diff --git a/arch/score/lib/libgcc.h b/arch/score/lib/libgcc.h
new file mode 100644
index 000000000000..0f12543d9f31
--- /dev/null
+++ b/arch/score/lib/libgcc.h
@@ -0,0 +1,37 @@
1/*
2 * arch/score/lib/libgcc.h
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, see the file COPYING, or write
16 * to the Free Software Foundation, Inc.,
17 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18 */
19
20
21#ifndef __ASM_LIBGCC_H
22#define __ASM_LIBGCC_H
23
24#include <asm/byteorder.h>
25
26typedef int word_type __attribute__((mode(__word__)));
27
28struct DWstruct {
29 int low, high;
30};
31
32typedef union {
33 struct DWstruct s;
34 long long ll;
35} DWunion;
36
37#endif /* __ASM_LIBGCC_H */
diff --git a/arch/score/lib/lshrdi3.c b/arch/score/lib/lshrdi3.c
new file mode 100644
index 000000000000..ce21175fd791
--- /dev/null
+++ b/arch/score/lib/lshrdi3.c
@@ -0,0 +1,47 @@
1/*
2 * arch/score/lib/lshrdi3.c
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, see the file COPYING, or write
16 * to the Free Software Foundation, Inc.,
17 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18 */
19
20
21#include <linux/module.h>
22#include "libgcc.h"
23
24long long __lshrdi3(long long u, word_type b)
25{
26 DWunion uu, w;
27 word_type bm;
28
29 if (b == 0)
30 return u;
31
32 uu.ll = u;
33 bm = 32 - b;
34
35 if (bm <= 0) {
36 w.s.high = 0;
37 w.s.low = (unsigned int) uu.s.high >> -bm;
38 } else {
39 const unsigned int carries = (unsigned int) uu.s.high << bm;
40
41 w.s.high = (unsigned int) uu.s.high >> b;
42 w.s.low = ((unsigned int) uu.s.low >> b) | carries;
43 }
44
45 return w.ll;
46}
47EXPORT_SYMBOL(__lshrdi3);
diff --git a/arch/score/lib/string.S b/arch/score/lib/string.S
new file mode 100644
index 000000000000..00b7d3a2fc60
--- /dev/null
+++ b/arch/score/lib/string.S
@@ -0,0 +1,184 @@
1/*
2 * arch/score/lib/string.S
3 *
4 * Score Processor version.
5 *
6 * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
7 * Chen Liqin <liqin.chen@sunplusct.com>
8 * Lennox Wu <lennox.wu@sunplusct.com>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, see the file COPYING, or write
22 * to the Free Software Foundation, Inc.,
23 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
24 */
25
26#include <linux/linkage.h>
27#include <asm-generic/errno.h>
28
29 .text
30 .align 2
31ENTRY(__strncpy_from_user)
32 cmpi.c r6, 0
33 mv r9, r6
34 ble .L2
350: lbu r7, [r5]
36 ldi r8, 0
371: sb r7, [r4]
382: lb r6, [r5]
39 cmp.c r6, r8
40 beq .L2
41
42.L5:
43 addi r8, 1
44 cmp.c r8, r9
45 beq .L7
463: lbu r6, [r5, 1]+
474: sb r6, [r4, 1]+
485: lb r7, [r5]
49 cmpi.c r7, 0
50 bne .L5
51.L7:
52 mv r4, r8
53 br r3
54.L2:
55 ldi r8, 0
56 mv r4, r8
57 br r3
58 .section .fixup, "ax"
5999:
60 ldi r4, -EFAULT
61 br r3
62 .previous
63 .section __ex_table, "a"
64 .align 2
65 .word 0b ,99b
66 .word 1b ,99b
67 .word 2b ,99b
68 .word 3b ,99b
69 .word 4b ,99b
70 .word 5b ,99b
71 .previous
72
73 .align 2
74ENTRY(__strnlen_user)
75 cmpi.c r5, 0
76 ble .L11
770: lb r6, [r4]
78 ldi r7, 0
79 cmp.c r6, r7
80 beq .L11
81.L15:
82 addi r7, 1
83 cmp.c r7, r5
84 beq .L23
851: lb r6, [r4,1]+
86 cmpi.c r6, 0
87 bne .L15
88.L23:
89 addri r4, r7, 1
90 br r3
91
92.L11:
93 ldi r4, 1
94 br r3
95 .section .fixup, "ax"
9699:
97 ldi r4, 0
98 br r3
99
100 .section __ex_table,"a"
101 .align 2
102 .word 0b, 99b
103 .word 1b, 99b
104 .previous
105
106 .align 2
107ENTRY(__strlen_user)
1080: lb r6, [r4]
109 mv r7, r4
110 extsb r6, r6
111 cmpi.c r6, 0
112 mv r4, r6
113 beq .L27
114.L28:
1151: lb r6, [r7, 1]+
116 addi r6, 1
117 cmpi.c r6, 0
118 bne .L28
119.L27:
120 br r3
121 .section .fixup, "ax"
122 ldi r4, 0x0
123 br r3
12499:
125 ldi r4, 0
126 br r3
127 .previous
128 .section __ex_table, "a"
129 .align 2
130 .word 0b ,99b
131 .word 1b ,99b
132 .previous
133
134 .align 2
135ENTRY(__copy_tofrom_user)
136 cmpi.c r6, 0
137 mv r10,r6
138 beq .L32
139 ldi r9, 0
140.L34:
141 add r6, r5, r9
1420: lbu r8, [r6]
143 add r7, r4, r9
1441: sb r8, [r7]
145 addi r9, 1
146 cmp.c r9, r10
147 bne .L34
148.L32:
149 ldi r4, 0
150 br r3
151 .section .fixup, "ax"
15299:
153 sub r4, r10, r9
154 br r3
155 .previous
156 .section __ex_table, "a"
157 .align 2
158 .word 0b, 99b
159 .word 1b, 99b
160 .previous
161
162 .align 2
163ENTRY(__clear_user)
164 cmpi.c r5, 0
165 beq .L38
166 ldi r6, 0
167 mv r7, r6
168.L40:
169 addi r6, 1
1700: sb r7, [r4]+, 1
171 cmp.c r6, r5
172 bne .L40
173.L38:
174 ldi r4, 0
175 br r3
176
177 .section .fixup, "ax"
178 br r3
179 .previous
180 .section __ex_table, "a"
181 .align 2
18299:
183 .word 0b, 99b
184 .previous
diff --git a/arch/score/lib/ucmpdi2.c b/arch/score/lib/ucmpdi2.c
new file mode 100644
index 000000000000..b15241e0b079
--- /dev/null
+++ b/arch/score/lib/ucmpdi2.c
@@ -0,0 +1,38 @@
1/*
2 * arch/score/lib/ucmpdi2.c
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, see the file COPYING, or write
16 * to the Free Software Foundation, Inc.,
17 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18 */
19
20#include <linux/module.h>
21#include "libgcc.h"
22
23word_type __ucmpdi2(unsigned long long a, unsigned long long b)
24{
25 const DWunion au = {.ll = a};
26 const DWunion bu = {.ll = b};
27
28 if ((unsigned int) au.s.high < (unsigned int) bu.s.high)
29 return 0;
30 else if ((unsigned int) au.s.high > (unsigned int) bu.s.high)
31 return 2;
32 if ((unsigned int) au.s.low < (unsigned int) bu.s.low)
33 return 0;
34 else if ((unsigned int) au.s.low > (unsigned int) bu.s.low)
35 return 2;
36 return 1;
37}
38EXPORT_SYMBOL(__ucmpdi2);
diff --git a/arch/score/mm/Makefile b/arch/score/mm/Makefile
new file mode 100644
index 000000000000..7b1e29b1f8cd
--- /dev/null
+++ b/arch/score/mm/Makefile
@@ -0,0 +1,6 @@
1#
2# Makefile for the Linux/SCORE-specific parts of the memory manager.
3#
4
5obj-y += cache.o extable.o fault.o init.o \
6 tlb-miss.o tlb-score.o pgtable.o
diff --git a/arch/score/mm/cache.c b/arch/score/mm/cache.c
new file mode 100644
index 000000000000..dbac9d9dfddd
--- /dev/null
+++ b/arch/score/mm/cache.c
@@ -0,0 +1,257 @@
1/*
2 * arch/score/mm/cache.c
3 *
4 * Score Processor version.
5 *
6 * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
7 * Lennox Wu <lennox.wu@sunplusct.com>
8 * Chen Liqin <liqin.chen@sunplusct.com>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, see the file COPYING, or write
22 * to the Free Software Foundation, Inc.,
23 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
24 */
25
26#include <linux/init.h>
27#include <linux/linkage.h>
28#include <linux/kernel.h>
29#include <linux/mm.h>
30#include <linux/module.h>
31#include <linux/sched.h>
32
33#include <asm/mmu_context.h>
34
35/*
36Just flush entire Dcache!!
37You must ensure the page doesn't include instructions, because
38the function will not flush the Icache.
39The addr must be cache aligned.
40*/
41static void flush_data_cache_page(unsigned long addr)
42{
43 unsigned int i;
44 for (i = 0; i < (PAGE_SIZE / L1_CACHE_BYTES); i += L1_CACHE_BYTES) {
45 __asm__ __volatile__(
46 "cache 0x0e, [%0, 0]\n"
47 "cache 0x1a, [%0, 0]\n"
48 "nop\n"
49 : : "r" (addr));
50 addr += L1_CACHE_BYTES;
51 }
52}
53
54/* called by update_mmu_cache. */
55void __update_cache(struct vm_area_struct *vma, unsigned long address,
56 pte_t pte)
57{
58 struct page *page;
59 unsigned long pfn, addr;
60 int exec = (vma->vm_flags & VM_EXEC);
61
62 pfn = pte_pfn(pte);
63 if (unlikely(!pfn_valid(pfn)))
64 return;
65 page = pfn_to_page(pfn);
66 if (page_mapping(page) && test_bit(PG_arch_1, &page->flags)) {
67 addr = (unsigned long) page_address(page);
68 if (exec)
69 flush_data_cache_page(addr);
70 clear_bit(PG_arch_1, &page->flags);
71 }
72}
73
74static inline void setup_protection_map(void)
75{
76 protection_map[0] = PAGE_NONE;
77 protection_map[1] = PAGE_READONLY;
78 protection_map[2] = PAGE_COPY;
79 protection_map[3] = PAGE_COPY;
80 protection_map[4] = PAGE_READONLY;
81 protection_map[5] = PAGE_READONLY;
82 protection_map[6] = PAGE_COPY;
83 protection_map[7] = PAGE_COPY;
84 protection_map[8] = PAGE_NONE;
85 protection_map[9] = PAGE_READONLY;
86 protection_map[10] = PAGE_SHARED;
87 protection_map[11] = PAGE_SHARED;
88 protection_map[12] = PAGE_READONLY;
89 protection_map[13] = PAGE_READONLY;
90 protection_map[14] = PAGE_SHARED;
91 protection_map[15] = PAGE_SHARED;
92}
93
94void __devinit cpu_cache_init(void)
95{
96 setup_protection_map();
97}
98
99void flush_icache_all(void)
100{
101 __asm__ __volatile__(
102 "la r8, flush_icache_all\n"
103 "cache 0x10, [r8, 0]\n"
104 "nop\nnop\nnop\nnop\nnop\nnop\n"
105 : : : "r8");
106}
107
108void flush_dcache_all(void)
109{
110 __asm__ __volatile__(
111 "la r8, flush_dcache_all\n"
112 "cache 0x1f, [r8, 0]\n"
113 "nop\nnop\nnop\nnop\nnop\nnop\n"
114 "cache 0x1a, [r8, 0]\n"
115 "nop\nnop\nnop\nnop\nnop\nnop\n"
116 : : : "r8");
117}
118
119void flush_cache_all(void)
120{
121 __asm__ __volatile__(
122 "la r8, flush_cache_all\n"
123 "cache 0x10, [r8, 0]\n"
124 "nop\nnop\nnop\nnop\nnop\nnop\n"
125 "cache 0x1f, [r8, 0]\n"
126 "nop\nnop\nnop\nnop\nnop\nnop\n"
127 "cache 0x1a, [r8, 0]\n"
128 "nop\nnop\nnop\nnop\nnop\nnop\n"
129 : : : "r8");
130}
131
132void flush_cache_mm(struct mm_struct *mm)
133{
134 if (!(mm->context))
135 return;
136 flush_cache_all();
137}
138
139/*if we flush a range precisely , the processing may be very long.
140We must check each page in the range whether present. If the page is present,
141we can flush the range in the page. Be careful, the range may be cross two
142page, a page is present and another is not present.
143*/
144/*
145The interface is provided in hopes that the port can find
146a suitably efficient method for removing multiple page
147sized regions from the cache.
148*/
149void flush_cache_range(struct vm_area_struct *vma,
150 unsigned long start, unsigned long end)
151{
152 struct mm_struct *mm = vma->vm_mm;
153 int exec = vma->vm_flags & VM_EXEC;
154 pgd_t *pgdp;
155 pud_t *pudp;
156 pmd_t *pmdp;
157 pte_t *ptep;
158
159 if (!(mm->context))
160 return;
161
162 pgdp = pgd_offset(mm, start);
163 pudp = pud_offset(pgdp, start);
164 pmdp = pmd_offset(pudp, start);
165 ptep = pte_offset(pmdp, start);
166
167 while (start <= end) {
168 unsigned long tmpend;
169 pgdp = pgd_offset(mm, start);
170 pudp = pud_offset(pgdp, start);
171 pmdp = pmd_offset(pudp, start);
172 ptep = pte_offset(pmdp, start);
173
174 if (!(pte_val(*ptep) & _PAGE_PRESENT)) {
175 start = (start + PAGE_SIZE) & ~(PAGE_SIZE - 1);
176 continue;
177 }
178 tmpend = (start | (PAGE_SIZE-1)) > end ?
179 end : (start | (PAGE_SIZE-1));
180
181 flush_dcache_range(start, tmpend);
182 if (exec)
183 flush_icache_range(start, tmpend);
184 start = (start + PAGE_SIZE) & ~(PAGE_SIZE - 1);
185 }
186}
187
188void flush_cache_page(struct vm_area_struct *vma,
189 unsigned long addr, unsigned long pfn)
190{
191 int exec = vma->vm_flags & VM_EXEC;
192 unsigned long kaddr = 0xa0000000 | (pfn << PAGE_SHIFT);
193
194 flush_dcache_range(kaddr, kaddr + PAGE_SIZE);
195
196 if (exec)
197 flush_icache_range(kaddr, kaddr + PAGE_SIZE);
198}
199
200void flush_cache_sigtramp(unsigned long addr)
201{
202 __asm__ __volatile__(
203 "cache 0x02, [%0, 0]\n"
204 "nop\nnop\nnop\nnop\nnop\n"
205 "cache 0x02, [%0, 0x4]\n"
206 "nop\nnop\nnop\nnop\nnop\n"
207
208 "cache 0x0d, [%0, 0]\n"
209 "nop\nnop\nnop\nnop\nnop\n"
210 "cache 0x0d, [%0, 0x4]\n"
211 "nop\nnop\nnop\nnop\nnop\n"
212
213 "cache 0x1a, [%0, 0]\n"
214 "nop\nnop\nnop\nnop\nnop\n"
215 : : "r" (addr));
216}
217
218/*
2191. WB and invalid a cache line of Dcache
2202. Drain Write Buffer
221the range must be smaller than PAGE_SIZE
222*/
223void flush_dcache_range(unsigned long start, unsigned long end)
224{
225 int size, i;
226
227 start = start & ~(L1_CACHE_BYTES - 1);
228 end = end & ~(L1_CACHE_BYTES - 1);
229 size = end - start;
230 /* flush dcache to ram, and invalidate dcache lines. */
231 for (i = 0; i < size; i += L1_CACHE_BYTES) {
232 __asm__ __volatile__(
233 "cache 0x0e, [%0, 0]\n"
234 "nop\nnop\nnop\nnop\nnop\n"
235 "cache 0x1a, [%0, 0]\n"
236 "nop\nnop\nnop\nnop\nnop\n"
237 : : "r" (start));
238 start += L1_CACHE_BYTES;
239 }
240}
241
242void flush_icache_range(unsigned long start, unsigned long end)
243{
244 int size, i;
245 start = start & ~(L1_CACHE_BYTES - 1);
246 end = end & ~(L1_CACHE_BYTES - 1);
247
248 size = end - start;
249 /* invalidate icache lines. */
250 for (i = 0; i < size; i += L1_CACHE_BYTES) {
251 __asm__ __volatile__(
252 "cache 0x02, [%0, 0]\n"
253 "nop\nnop\nnop\nnop\nnop\n"
254 : : "r" (start));
255 start += L1_CACHE_BYTES;
256 }
257}
diff --git a/arch/score/mm/extable.c b/arch/score/mm/extable.c
new file mode 100644
index 000000000000..01ff6445171c
--- /dev/null
+++ b/arch/score/mm/extable.c
@@ -0,0 +1,38 @@
1/*
2 * arch/score/mm/extable.c
3 *
4 * Score Processor version.
5 *
6 * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
7 * Lennox Wu <lennox.wu@sunplusct.com>
8 * Chen Liqin <liqin.chen@sunplusct.com>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, see the file COPYING, or write
22 * to the Free Software Foundation, Inc.,
23 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
24 */
25
26#include <linux/module.h>
27
28int fixup_exception(struct pt_regs *regs)
29{
30 const struct exception_table_entry *fixup;
31
32 fixup = search_exception_tables(regs->cp0_epc);
33 if (fixup) {
34 regs->cp0_epc = fixup->fixup;
35 return 1;
36 }
37 return 0;
38}
diff --git a/arch/score/mm/fault.c b/arch/score/mm/fault.c
new file mode 100644
index 000000000000..47b600e4b2c5
--- /dev/null
+++ b/arch/score/mm/fault.c
@@ -0,0 +1,235 @@
1/*
2 * arch/score/mm/fault.c
3 *
4 * Score Processor version.
5 *
6 * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
7 * Lennox Wu <lennox.wu@sunplusct.com>
8 * Chen Liqin <liqin.chen@sunplusct.com>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, see the file COPYING, or write
22 * to the Free Software Foundation, Inc.,
23 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
24 */
25
26#include <linux/errno.h>
27#include <linux/interrupt.h>
28#include <linux/kernel.h>
29#include <linux/mm.h>
30#include <linux/mman.h>
31#include <linux/module.h>
32#include <linux/signal.h>
33#include <linux/sched.h>
34#include <linux/string.h>
35#include <linux/types.h>
36#include <linux/ptrace.h>
37
38/*
39 * This routine handles page faults. It determines the address,
40 * and the problem, and then passes it off to one of the appropriate
41 * routines.
42 */
43asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long write,
44 unsigned long address)
45{
46 struct vm_area_struct *vma = NULL;
47 struct task_struct *tsk = current;
48 struct mm_struct *mm = tsk->mm;
49 const int field = sizeof(unsigned long) * 2;
50 siginfo_t info;
51 int fault;
52
53 info.si_code = SEGV_MAPERR;
54
55 /*
56 * We fault-in kernel-space virtual memory on-demand. The
57 * 'reference' page table is init_mm.pgd.
58 *
59 * NOTE! We MUST NOT take any locks for this case. We may
60 * be in an interrupt or a critical region, and should
61 * only copy the information from the master page table,
62 * nothing more.
63 */
64 if (unlikely(address >= VMALLOC_START && address <= VMALLOC_END))
65 goto vmalloc_fault;
66#ifdef MODULE_START
67 if (unlikely(address >= MODULE_START && address < MODULE_END))
68 goto vmalloc_fault;
69#endif
70
71 /*
72 * If we're in an interrupt or have no user
73 * context, we must not take the fault..
74 */
75 if (in_atomic() || !mm)
76 goto bad_area_nosemaphore;
77
78 down_read(&mm->mmap_sem);
79 vma = find_vma(mm, address);
80 if (!vma)
81 goto bad_area;
82 if (vma->vm_start <= address)
83 goto good_area;
84 if (!(vma->vm_flags & VM_GROWSDOWN))
85 goto bad_area;
86 if (expand_stack(vma, address))
87 goto bad_area;
88 /*
89 * Ok, we have a good vm_area for this memory access, so
90 * we can handle it..
91 */
92good_area:
93 info.si_code = SEGV_ACCERR;
94
95 if (write) {
96 if (!(vma->vm_flags & VM_WRITE))
97 goto bad_area;
98 } else {
99 if (!(vma->vm_flags & (VM_READ | VM_WRITE | VM_EXEC)))
100 goto bad_area;
101 }
102
103survive:
104 /*
105 * If for any reason at all we couldn't handle the fault,
106 * make sure we exit gracefully rather than endlessly redo
107 * the fault.
108 */
109 fault = handle_mm_fault(mm, vma, address, write);
110 if (unlikely(fault & VM_FAULT_ERROR)) {
111 if (fault & VM_FAULT_OOM)
112 goto out_of_memory;
113 else if (fault & VM_FAULT_SIGBUS)
114 goto do_sigbus;
115 BUG();
116 }
117 if (fault & VM_FAULT_MAJOR)
118 tsk->maj_flt++;
119 else
120 tsk->min_flt++;
121
122 up_read(&mm->mmap_sem);
123 return;
124
125 /*
126 * Something tried to access memory that isn't in our memory map..
127 * Fix it, but check if it's kernel or user first..
128 */
129bad_area:
130 up_read(&mm->mmap_sem);
131
132bad_area_nosemaphore:
133 /* User mode accesses just cause a SIGSEGV */
134 if (user_mode(regs)) {
135 tsk->thread.cp0_badvaddr = address;
136 tsk->thread.error_code = write;
137 info.si_signo = SIGSEGV;
138 info.si_errno = 0;
139 /* info.si_code has been set above */
140 info.si_addr = (void __user *) address;
141 force_sig_info(SIGSEGV, &info, tsk);
142 return;
143 }
144
145no_context:
146 /* Are we prepared to handle this kernel fault? */
147 if (fixup_exception(regs)) {
148 current->thread.cp0_baduaddr = address;
149 return;
150 }
151
152 /*
153 * Oops. The kernel tried to access some bad page. We'll have to
154 * terminate things with extreme prejudice.
155 */
156 bust_spinlocks(1);
157
158 printk(KERN_ALERT "CPU %d Unable to handle kernel paging request at "
159 "virtual address %0*lx, epc == %0*lx, ra == %0*lx\n",
160 0, field, address, field, regs->cp0_epc,
161 field, regs->regs[3]);
162 die("Oops", regs);
163
164 /*
165 * We ran out of memory, or some other thing happened to us that made
166 * us unable to handle the page fault gracefully.
167 */
168out_of_memory:
169 up_read(&mm->mmap_sem);
170 if (is_global_init(tsk)) {
171 yield();
172 down_read(&mm->mmap_sem);
173 goto survive;
174 }
175 printk("VM: killing process %s\n", tsk->comm);
176 if (user_mode(regs))
177 do_group_exit(SIGKILL);
178 goto no_context;
179
180do_sigbus:
181 up_read(&mm->mmap_sem);
182 /* Kernel mode? Handle exceptions or die */
183 if (!user_mode(regs))
184 goto no_context;
185 else
186 /*
187 * Send a sigbus, regardless of whether we were in kernel
188 * or user mode.
189 */
190 tsk->thread.cp0_badvaddr = address;
191 info.si_signo = SIGBUS;
192 info.si_errno = 0;
193 info.si_code = BUS_ADRERR;
194 info.si_addr = (void __user *) address;
195 force_sig_info(SIGBUS, &info, tsk);
196 return;
197vmalloc_fault:
198 {
199 /*
200 * Synchronize this task's top level page-table
201 * with the 'reference' page table.
202 *
203 * Do _not_ use "tsk" here. We might be inside
204 * an interrupt in the middle of a task switch..
205 */
206 int offset = __pgd_offset(address);
207 pgd_t *pgd, *pgd_k;
208 pud_t *pud, *pud_k;
209 pmd_t *pmd, *pmd_k;
210 pte_t *pte_k;
211
212 pgd = (pgd_t *) pgd_current + offset;
213 pgd_k = init_mm.pgd + offset;
214
215 if (!pgd_present(*pgd_k))
216 goto no_context;
217 set_pgd(pgd, *pgd_k);
218
219 pud = pud_offset(pgd, address);
220 pud_k = pud_offset(pgd_k, address);
221 if (!pud_present(*pud_k))
222 goto no_context;
223
224 pmd = pmd_offset(pud, address);
225 pmd_k = pmd_offset(pud_k, address);
226 if (!pmd_present(*pmd_k))
227 goto no_context;
228 set_pmd(pmd, *pmd_k);
229
230 pte_k = pte_offset_kernel(pmd_k, address);
231 if (!pte_present(*pte_k))
232 goto no_context;
233 return;
234 }
235}
diff --git a/arch/score/mm/init.c b/arch/score/mm/init.c
new file mode 100644
index 000000000000..4e3dcd0c4716
--- /dev/null
+++ b/arch/score/mm/init.c
@@ -0,0 +1,161 @@
1/*
2 * arch/score/mm/init.c
3 *
4 * Score Processor version.
5 *
6 * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
7 * Lennox Wu <lennox.wu@sunplusct.com>
8 * Chen Liqin <liqin.chen@sunplusct.com>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, see the file COPYING, or write
22 * to the Free Software Foundation, Inc.,
23 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
24 */
25
26#include <linux/errno.h>
27#include <linux/bootmem.h>
28#include <linux/kernel.h>
29#include <linux/init.h>
30#include <linux/mm.h>
31#include <linux/mman.h>
32#include <linux/pagemap.h>
33#include <linux/proc_fs.h>
34#include <linux/sched.h>
35#include <linux/initrd.h>
36
37#include <asm/sections.h>
38#include <asm/tlb.h>
39
40DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
41
42unsigned long empty_zero_page;
43EXPORT_SYMBOL_GPL(empty_zero_page);
44
45static struct kcore_list kcore_mem, kcore_vmalloc;
46
47static unsigned long setup_zero_page(void)
48{
49 struct page *page;
50
51 empty_zero_page = __get_free_pages(GFP_KERNEL | __GFP_ZERO, 0);
52 if (!empty_zero_page)
53 panic("Oh boy, that early out of memory?");
54
55 page = virt_to_page((void *) empty_zero_page);
56 SetPageReserved(page);
57
58 return 1UL;
59}
60
61#ifndef CONFIG_NEED_MULTIPLE_NODES
62static int __init page_is_ram(unsigned long pagenr)
63{
64 if (pagenr >= min_low_pfn && pagenr < max_low_pfn)
65 return 1;
66 else
67 return 0;
68}
69
70void __init paging_init(void)
71{
72 unsigned long max_zone_pfns[MAX_NR_ZONES];
73 unsigned long lastpfn;
74
75 pagetable_init();
76 max_zone_pfns[ZONE_NORMAL] = max_low_pfn;
77 lastpfn = max_low_pfn;
78 free_area_init_nodes(max_zone_pfns);
79}
80
81void __init mem_init(void)
82{
83 unsigned long codesize, reservedpages, datasize, initsize;
84 unsigned long tmp, ram = 0;
85
86 max_mapnr = max_low_pfn;
87 high_memory = (void *) __va(max_low_pfn << PAGE_SHIFT);
88 totalram_pages += free_all_bootmem();
89 totalram_pages -= setup_zero_page(); /* Setup zeroed pages. */
90 reservedpages = 0;
91
92 for (tmp = 0; tmp < max_low_pfn; tmp++)
93 if (page_is_ram(tmp)) {
94 ram++;
95 if (PageReserved(pfn_to_page(tmp)))
96 reservedpages++;
97 }
98
99 num_physpages = ram;
100 codesize = (unsigned long) &_etext - (unsigned long) &_text;
101 datasize = (unsigned long) &_edata - (unsigned long) &_etext;
102 initsize = (unsigned long) &__init_end - (unsigned long) &__init_begin;
103
104 kclist_add(&kcore_mem, __va(0), max_low_pfn << PAGE_SHIFT);
105 kclist_add(&kcore_vmalloc, (void *) VMALLOC_START,
106 VMALLOC_END - VMALLOC_START);
107
108 printk(KERN_INFO "Memory: %luk/%luk available (%ldk kernel code, "
109 "%ldk reserved, %ldk data, %ldk init, %ldk highmem)\n",
110 (unsigned long) nr_free_pages() << (PAGE_SHIFT-10),
111 ram << (PAGE_SHIFT-10), codesize >> 10,
112 reservedpages << (PAGE_SHIFT-10), datasize >> 10,
113 initsize >> 10,
114 (unsigned long) (totalhigh_pages << (PAGE_SHIFT-10)));
115}
116#endif /* !CONFIG_NEED_MULTIPLE_NODES */
117
118static void free_init_pages(const char *what, unsigned long begin, unsigned long end)
119{
120 unsigned long pfn;
121
122 for (pfn = PFN_UP(begin); pfn < PFN_DOWN(end); pfn++) {
123 struct page *page = pfn_to_page(pfn);
124 void *addr = phys_to_virt(PFN_PHYS(pfn));
125
126 ClearPageReserved(page);
127 init_page_count(page);
128 memset(addr, POISON_FREE_INITMEM, PAGE_SIZE);
129 __free_page(page);
130 totalram_pages++;
131 }
132 printk(KERN_INFO "Freeing %s: %ldk freed\n", what, (end - begin) >> 10);
133}
134
135#ifdef CONFIG_BLK_DEV_INITRD
136void free_initrd_mem(unsigned long start, unsigned long end)
137{
138 free_init_pages("initrd memory",
139 virt_to_phys((void *) start),
140 virt_to_phys((void *) end));
141}
142#endif
143
144void __init_refok free_initmem(void)
145{
146 free_init_pages("unused kernel memory",
147 __pa(&__init_begin),
148 __pa(&__init_end));
149}
150
151unsigned long pgd_current;
152
153#define __page_aligned(order) __attribute__((__aligned__(PAGE_SIZE<<order)))
154
155/*
156 * gcc 3.3 and older have trouble determining that PTRS_PER_PGD and PGD_ORDER
157 * are constants. So we use the variants from asm-offset.h until that gcc
158 * will officially be retired.
159 */
160pgd_t swapper_pg_dir[PTRS_PER_PGD] __page_aligned(PTE_ORDER);
161pte_t invalid_pte_table[PTRS_PER_PTE] __page_aligned(PTE_ORDER);
diff --git a/arch/score/mm/pgtable.c b/arch/score/mm/pgtable.c
new file mode 100644
index 000000000000..6408bb73d3cc
--- /dev/null
+++ b/arch/score/mm/pgtable.c
@@ -0,0 +1,52 @@
1/*
2 * arch/score/mm/pgtable-32.c
3 *
4 * Score Processor version.
5 *
6 * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
7 * Lennox Wu <lennox.wu@sunplusct.com>
8 * Chen Liqin <liqin.chen@sunplusct.com>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, see the file COPYING, or write
22 * to the Free Software Foundation, Inc.,
23 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
24 */
25
26#include <linux/bootmem.h>
27#include <linux/init.h>
28#include <linux/pfn.h>
29#include <linux/mm.h>
30
31void pgd_init(unsigned long page)
32{
33 unsigned long *p = (unsigned long *) page;
34 int i;
35
36 for (i = 0; i < USER_PTRS_PER_PGD; i += 8) {
37 p[i + 0] = (unsigned long) invalid_pte_table;
38 p[i + 1] = (unsigned long) invalid_pte_table;
39 p[i + 2] = (unsigned long) invalid_pte_table;
40 p[i + 3] = (unsigned long) invalid_pte_table;
41 p[i + 4] = (unsigned long) invalid_pte_table;
42 p[i + 5] = (unsigned long) invalid_pte_table;
43 p[i + 6] = (unsigned long) invalid_pte_table;
44 p[i + 7] = (unsigned long) invalid_pte_table;
45 }
46}
47
48void __init pagetable_init(void)
49{
50 /* Initialize the entire pgd. */
51 pgd_init((unsigned long)swapper_pg_dir);
52}
diff --git a/arch/score/mm/tlb-miss.S b/arch/score/mm/tlb-miss.S
new file mode 100644
index 000000000000..f27651914e8d
--- /dev/null
+++ b/arch/score/mm/tlb-miss.S
@@ -0,0 +1,199 @@
1/*
2 * arch/score/mm/tlbex.S
3 *
4 * Score Processor version.
5 *
6 * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
7 * Lennox Wu <lennox.wu@sunplusct.com>
8 * Chen Liqin <liqin.chen@sunplusct.com>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, see the file COPYING, or write
22 * to the Free Software Foundation, Inc.,
23 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
24 */
25
26#include <asm/asmmacro.h>
27#include <asm/pgtable-bits.h>
28#include <asm/scoreregs.h>
29
30/*
31* After this macro runs, the pte faulted on is
32* in register PTE, a ptr into the table in which
33* the pte belongs is in PTR.
34*/
35 .macro load_pte, pte, ptr
36 la \ptr, pgd_current
37 lw \ptr, [\ptr, 0]
38 mfcr \pte, cr6
39 srli \pte, \pte, 22
40 slli \pte, \pte, 2
41 add \ptr, \ptr, \pte
42 lw \ptr, [\ptr, 0]
43 mfcr \pte, cr6
44 srli \pte, \pte, 10
45 andi \pte, 0xffc
46 add \ptr, \ptr, \pte
47 lw \pte, [\ptr, 0]
48 .endm
49
50 .macro pte_reload, ptr
51 lw \ptr, [\ptr, 0]
52 mtcr \ptr, cr12
53 nop
54 nop
55 nop
56 nop
57 nop
58 .endm
59
60 .macro do_fault, write
61 SAVE_ALL
62 mfcr r6, cr6
63 mv r4, r0
64 ldi r5, \write
65 la r8, do_page_fault
66 brl r8
67 j ret_from_exception
68 .endm
69
70 .macro pte_writable, pte, ptr, label
71 andi \pte, 0x280
72 cmpi.c \pte, 0x280
73 bne \label
74 lw \pte, [\ptr, 0] /*reload PTE*/
75 .endm
76
77/*
78 * Make PTE writable, update software status bits as well,
79 * then store at PTR.
80 */
81 .macro pte_makewrite, pte, ptr
82 ori \pte, 0x426
83 sw \pte, [\ptr, 0]
84 .endm
85
86 .text
87ENTRY(score7_FTLB_refill_Handler)
88 la r31, pgd_current /* get pgd pointer */
89 lw r31, [r31, 0] /* get the address of PGD */
90 mfcr r30, cr6
91 srli r30, r30, 22 /* PGDIR_SHIFT = 22*/
92 slli r30, r30, 2
93 add r31, r31, r30
94 lw r31, [r31, 0] /* get the address of the start address of PTE table */
95
96 mfcr r30, cr9
97 andi r30, 0xfff /* equivalent to get PET index and right shift 2 bits */
98 add r31, r31, r30
99 lw r30, [r31, 0] /* load pte entry */
100 mtcr r30, cr12
101 nop
102 nop
103 nop
104 nop
105 nop
106 mtrtlb
107 nop
108 nop
109 nop
110 nop
111 nop
112 rte /* 6 cycles to make sure tlb entry works */
113
114ENTRY(score7_KSEG_refill_Handler)
115 la r31, pgd_current /* get pgd pointer */
116 lw r31, [r31, 0] /* get the address of PGD */
117 mfcr r30, cr6
118 srli r30, r30, 22 /* PGDIR_SHIFT = 22 */
119 slli r30, r30, 2
120 add r31, r31, r30
121 lw r31, [r31, 0] /* get the address of the start address of PTE table */
122
123 mfcr r30, cr6 /* get Bad VPN */
124 srli r30, r30, 10
125 andi r30, 0xffc /* PTE VPN mask (bit 11~2) */
126
127 add r31, r31, r30
128 lw r30, [r31, 0] /* load pte entry */
129 mtcr r30, cr12
130 nop
131 nop
132 nop
133 nop
134 nop
135 mtrtlb
136 nop
137 nop
138 nop
139 nop
140 nop
141 rte /* 6 cycles to make sure tlb entry works */
142
143nopage_tlbl:
144 do_fault 0 /* Read */
145
146ENTRY(handle_tlb_refill)
147 load_pte r30, r31
148 pte_writable r30, r31, handle_tlb_refill_nopage
149 pte_makewrite r30, r31 /* Access|Modify|Dirty|Valid */
150 pte_reload r31
151 mtrtlb
152 nop
153 nop
154 nop
155 nop
156 nop
157 rte
158handle_tlb_refill_nopage:
159 do_fault 0 /* Read */
160
161ENTRY(handle_tlb_invaild)
162 load_pte r30, r31
163 stlb /* find faulting entry */
164 pte_writable r30, r31, handle_tlb_invaild_nopage
165 pte_makewrite r30, r31 /* Access|Modify|Dirty|Valid */
166 pte_reload r31
167 mtptlb
168 nop
169 nop
170 nop
171 nop
172 nop
173 rte
174handle_tlb_invaild_nopage:
175 do_fault 0 /* Read */
176
177ENTRY(handle_mod)
178 load_pte r30, r31
179 stlb /* find faulting entry */
180 andi r30, _PAGE_WRITE /* Writable? */
181 cmpz.c r30
182 beq nowrite_mod
183 lw r30, [r31, 0] /* reload into r30 */
184
185 /* Present and writable bits set, set accessed and dirty bits. */
186 pte_makewrite r30, r31
187
188 /* Now reload the entry into the tlb. */
189 pte_reload r31
190 mtptlb
191 nop
192 nop
193 nop
194 nop
195 nop
196 rte
197
198nowrite_mod:
199 do_fault 1 /* Write */
diff --git a/arch/score/mm/tlb-score.c b/arch/score/mm/tlb-score.c
new file mode 100644
index 000000000000..4fa5aa5afecc
--- /dev/null
+++ b/arch/score/mm/tlb-score.c
@@ -0,0 +1,251 @@
1/*
2 * arch/score/mm/tlb-score.c
3 *
4 * Score Processor version.
5 *
6 * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
7 * Lennox Wu <lennox.wu@sunplusct.com>
8 * Chen Liqin <liqin.chen@sunplusct.com>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, see the file COPYING, or write
22 * to the Free Software Foundation, Inc.,
23 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
24 */
25
26#include <linux/highmem.h>
27#include <linux/module.h>
28
29#include <asm/irq.h>
30#include <asm/mmu_context.h>
31#include <asm/tlb.h>
32
33#define TLBSIZE 32
34
35unsigned long asid_cache = ASID_FIRST_VERSION;
36EXPORT_SYMBOL(asid_cache);
37
38void local_flush_tlb_all(void)
39{
40 unsigned long flags;
41 unsigned long old_ASID;
42 int entry;
43
44 local_irq_save(flags);
45 old_ASID = pevn_get() & ASID_MASK;
46 pectx_set(0); /* invalid */
47 entry = tlblock_get(); /* skip locked entries*/
48
49 for (; entry < TLBSIZE; entry++) {
50 tlbpt_set(entry);
51 pevn_set(KSEG1);
52 barrier();
53 tlb_write_indexed();
54 }
55 pevn_set(old_ASID);
56 local_irq_restore(flags);
57}
58
59/*
60 * If mm is currently active_mm, we can't really drop it. Instead,
61 * we will get a new one for it.
62 */
63static inline void
64drop_mmu_context(struct mm_struct *mm)
65{
66 unsigned long flags;
67
68 local_irq_save(flags);
69 get_new_mmu_context(mm);
70 pevn_set(mm->context & ASID_MASK);
71 local_irq_restore(flags);
72}
73
74void local_flush_tlb_mm(struct mm_struct *mm)
75{
76 if (mm->context != 0)
77 drop_mmu_context(mm);
78}
79
80void local_flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
81 unsigned long end)
82{
83 struct mm_struct *mm = vma->vm_mm;
84 unsigned long vma_mm_context = mm->context;
85 if (mm->context != 0) {
86 unsigned long flags;
87 int size;
88
89 local_irq_save(flags);
90 size = (end - start + (PAGE_SIZE - 1)) >> PAGE_SHIFT;
91 if (size <= TLBSIZE) {
92 int oldpid = pevn_get() & ASID_MASK;
93 int newpid = vma_mm_context & ASID_MASK;
94
95 start &= PAGE_MASK;
96 end += (PAGE_SIZE - 1);
97 end &= PAGE_MASK;
98 while (start < end) {
99 int idx;
100
101 pevn_set(start | newpid);
102 start += PAGE_SIZE;
103 barrier();
104 tlb_probe();
105 idx = tlbpt_get();
106 pectx_set(0);
107 pevn_set(KSEG1);
108 if (idx < 0)
109 continue;
110 tlb_write_indexed();
111 }
112 pevn_set(oldpid);
113 } else {
114 /* Bigger than TLBSIZE, get new ASID directly */
115 get_new_mmu_context(mm);
116 if (mm == current->active_mm)
117 pevn_set(vma_mm_context & ASID_MASK);
118 }
119 local_irq_restore(flags);
120 }
121}
122
123void local_flush_tlb_kernel_range(unsigned long start, unsigned long end)
124{
125 unsigned long flags;
126 int size;
127
128 local_irq_save(flags);
129 size = (end - start + (PAGE_SIZE - 1)) >> PAGE_SHIFT;
130 if (size <= TLBSIZE) {
131 int pid = pevn_get();
132
133 start &= PAGE_MASK;
134 end += PAGE_SIZE - 1;
135 end &= PAGE_MASK;
136
137 while (start < end) {
138 long idx;
139
140 pevn_set(start);
141 start += PAGE_SIZE;
142 tlb_probe();
143 idx = tlbpt_get();
144 if (idx < 0)
145 continue;
146 pectx_set(0);
147 pevn_set(KSEG1);
148 barrier();
149 tlb_write_indexed();
150 }
151 pevn_set(pid);
152 } else {
153 local_flush_tlb_all();
154 }
155
156 local_irq_restore(flags);
157}
158
159void local_flush_tlb_page(struct vm_area_struct *vma, unsigned long page)
160{
161 if (!vma || vma->vm_mm->context != 0) {
162 unsigned long flags;
163 int oldpid, newpid, idx;
164 unsigned long vma_ASID = vma->vm_mm->context;
165
166 newpid = vma_ASID & ASID_MASK;
167 page &= PAGE_MASK;
168 local_irq_save(flags);
169 oldpid = pevn_get() & ASID_MASK;
170 pevn_set(page | newpid);
171 barrier();
172 tlb_probe();
173 idx = tlbpt_get();
174 pectx_set(0);
175 pevn_set(KSEG1);
176 if (idx < 0) /* p_bit(31) - 1: miss, 0: hit*/
177 goto finish;
178 barrier();
179 tlb_write_indexed();
180finish:
181 pevn_set(oldpid);
182 local_irq_restore(flags);
183 }
184}
185
186/*
187 * This one is only used for pages with the global bit set so we don't care
188 * much about the ASID.
189 */
190void local_flush_tlb_one(unsigned long page)
191{
192 unsigned long flags;
193 int oldpid, idx;
194
195 local_irq_save(flags);
196 oldpid = pevn_get();
197 page &= (PAGE_MASK << 1);
198 pevn_set(page);
199 barrier();
200 tlb_probe();
201 idx = tlbpt_get();
202 pectx_set(0);
203 if (idx >= 0) {
204 /* Make sure all entries differ. */
205 pevn_set(KSEG1);
206 barrier();
207 tlb_write_indexed();
208 }
209 pevn_set(oldpid);
210 local_irq_restore(flags);
211}
212
213void __update_tlb(struct vm_area_struct *vma, unsigned long address, pte_t pte)
214{
215 unsigned long flags;
216 int idx, pid;
217
218 /*
219 * Handle debugger faulting in for debugee.
220 */
221 if (current->active_mm != vma->vm_mm)
222 return;
223
224 pid = pevn_get() & ASID_MASK;
225
226 local_irq_save(flags);
227 address &= PAGE_MASK;
228 pevn_set(address | pid);
229 barrier();
230 tlb_probe();
231 idx = tlbpt_get();
232 pectx_set(pte_val(pte));
233 pevn_set(address | pid);
234 if (idx < 0)
235 tlb_write_random();
236 else
237 tlb_write_indexed();
238
239 pevn_set(pid);
240 local_irq_restore(flags);
241}
242
243void __cpuinit tlb_init(void)
244{
245 tlblock_set(0);
246 local_flush_tlb_all();
247 memcpy((void *)(EXCEPTION_VECTOR_BASE_ADDR + 0x100),
248 &score7_FTLB_refill_Handler, 0xFC);
249 flush_icache_range(EXCEPTION_VECTOR_BASE_ADDR + 0x100,
250 EXCEPTION_VECTOR_BASE_ADDR + 0x1FC);
251}
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-28 20:07:28 -0500