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-rw-r--r--arch/m68k/Kconfig17
-rw-r--r--arch/m68k/Kconfig.cpu78
-rw-r--r--arch/m68k/Kconfig.debug16
-rw-r--r--arch/m68k/Kconfig.machine4
-rw-r--r--arch/m68k/include/asm/anchor.h112
-rw-r--r--arch/m68k/include/asm/atomic.h10
-rw-r--r--arch/m68k/include/asm/cacheflush_mm.h88
-rw-r--r--arch/m68k/include/asm/checksum.h31
-rw-r--r--arch/m68k/include/asm/div64.h8
-rw-r--r--arch/m68k/include/asm/elf.h6
-rw-r--r--arch/m68k/include/asm/entry.h10
-rw-r--r--arch/m68k/include/asm/fpu.h2
-rw-r--r--arch/m68k/include/asm/gpio.h3
-rw-r--r--arch/m68k/include/asm/irq.h5
-rw-r--r--arch/m68k/include/asm/m54xxacr.h32
-rw-r--r--arch/m68k/include/asm/mcf_pgalloc.h102
-rw-r--r--arch/m68k/include/asm/mcf_pgtable.h425
-rw-r--r--arch/m68k/include/asm/mcfmmu.h112
-rw-r--r--arch/m68k/include/asm/mmu_context.h250
-rw-r--r--arch/m68k/include/asm/motorola_pgtable.h1
-rw-r--r--arch/m68k/include/asm/page.h10
-rw-r--r--arch/m68k/include/asm/page_no.h3
-rw-r--r--arch/m68k/include/asm/page_offset.h10
-rw-r--r--arch/m68k/include/asm/pgalloc.h4
-rw-r--r--arch/m68k/include/asm/pgtable_mm.h30
-rw-r--r--arch/m68k/include/asm/processor.h18
-rw-r--r--arch/m68k/include/asm/segment.h30
-rw-r--r--arch/m68k/include/asm/setup.h14
-rw-r--r--arch/m68k/include/asm/sigcontext.h4
-rw-r--r--arch/m68k/include/asm/thread_info.h33
-rw-r--r--arch/m68k/include/asm/tlbflush.h23
-rw-r--r--arch/m68k/include/asm/traps.h1
-rw-r--r--arch/m68k/include/asm/uaccess_mm.h42
-rw-r--r--arch/m68k/include/asm/ucontext.h4
-rw-r--r--arch/m68k/kernel/Makefile21
-rw-r--r--arch/m68k/kernel/asm-offsets.c3
-rw-r--r--arch/m68k/kernel/entry.S2
-rw-r--r--arch/m68k/kernel/entry_mm.S31
-rw-r--r--arch/m68k/kernel/entry_no.S9
-rw-r--r--arch/m68k/kernel/init_task.c3
-rw-r--r--arch/m68k/kernel/m68k_ksyms.c2
-rw-r--r--arch/m68k/kernel/process_mm.c75
-rw-r--r--arch/m68k/kernel/ptrace_mm.c18
-rw-r--r--arch/m68k/kernel/setup_mm.c22
-rw-r--r--arch/m68k/kernel/setup_no.c1
-rw-r--r--arch/m68k/kernel/signal_mm.c204
-rw-r--r--arch/m68k/kernel/time.c2
-rw-r--r--arch/m68k/kernel/time_no.c3
-rw-r--r--arch/m68k/kernel/traps.c104
-rw-r--r--arch/m68k/kernel/vmlinux-nommu.lds (renamed from arch/m68k/kernel/vmlinux.lds_no.S)8
-rw-r--r--arch/m68k/kernel/vmlinux-std.lds2
-rw-r--r--arch/m68k/kernel/vmlinux-sun3.lds2
-rw-r--r--arch/m68k/kernel/vmlinux.lds.S15
-rw-r--r--arch/m68k/kernel/vmlinux.lds_mm.S10
-rw-r--r--arch/m68k/lib/Makefile10
-rw-r--r--arch/m68k/lib/checksum.c (renamed from arch/m68k/lib/checksum_mm.c)0
-rw-r--r--arch/m68k/lib/checksum_no.c156
-rw-r--r--arch/m68k/lib/uaccess.c22
-rw-r--r--arch/m68k/mm/Makefile8
-rw-r--r--arch/m68k/mm/cache.c24
-rw-r--r--arch/m68k/mm/init_mm.c36
-rw-r--r--arch/m68k/mm/kmap.c3
-rw-r--r--arch/m68k/mm/mcfmmu.c198
-rw-r--r--arch/m68k/mm/memory.c8
-rw-r--r--arch/m68k/platform/54xx/config.c47
-rw-r--r--arch/m68k/platform/68328/Makefile6
-rw-r--r--arch/m68k/platform/68328/bootlogo.h2
-rw-r--r--arch/m68k/platform/68328/bootlogo.pl10
-rw-r--r--arch/m68k/platform/68328/config.c3
-rw-r--r--arch/m68k/platform/68328/head-pilot.S19
-rw-r--r--arch/m68k/platform/68328/head-rom.S9
-rw-r--r--arch/m68k/platform/coldfire/entry.S7
-rw-r--r--arch/m68k/platform/coldfire/head.S53
-rw-r--r--arch/m68k/platform/coldfire/sltimers.c9
74 files changed, 2004 insertions, 701 deletions
diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig
index 361d54019bb0..81fdaa72c540 100644
--- a/arch/m68k/Kconfig
+++ b/arch/m68k/Kconfig
@@ -3,7 +3,6 @@ config M68K
3 default y 3 default y
4 select HAVE_IDE 4 select HAVE_IDE
5 select HAVE_AOUT if MMU 5 select HAVE_AOUT if MMU
6 select GENERIC_ATOMIC64 if MMU
7 select HAVE_GENERIC_HARDIRQS 6 select HAVE_GENERIC_HARDIRQS
8 select GENERIC_IRQ_SHOW 7 select GENERIC_IRQ_SHOW
9 select ARCH_HAVE_NMI_SAFE_CMPXCHG if RMW_INSNS 8 select ARCH_HAVE_NMI_SAFE_CMPXCHG if RMW_INSNS
@@ -41,12 +40,15 @@ config GENERIC_CALIBRATE_DELAY
41config GENERIC_IOMAP 40config GENERIC_IOMAP
42 def_bool MMU 41 def_bool MMU
43 42
43config GENERIC_CSUM
44 bool
45
44config TIME_LOW_RES 46config TIME_LOW_RES
45 bool 47 bool
46 default y 48 default y
47 49
48config ARCH_USES_GETTIMEOFFSET 50config ARCH_USES_GETTIMEOFFSET
49 def_bool MMU 51 def_bool MMU && !COLDFIRE
50 52
51config NO_IOPORT 53config NO_IOPORT
52 def_bool y 54 def_bool y
@@ -61,6 +63,12 @@ config ZONE_DMA
61config CPU_HAS_NO_BITFIELDS 63config CPU_HAS_NO_BITFIELDS
62 bool 64 bool
63 65
66config CPU_HAS_NO_MULDIV64
67 bool
68
69config CPU_HAS_ADDRESS_SPACES
70 bool
71
64config HZ 72config HZ
65 int 73 int
66 default 1000 if CLEOPATRA 74 default 1000 if CLEOPATRA
@@ -80,9 +88,12 @@ config MMU
80config MMU_MOTOROLA 88config MMU_MOTOROLA
81 bool 89 bool
82 90
91config MMU_COLDFIRE
92 bool
93
83config MMU_SUN3 94config MMU_SUN3
84 bool 95 bool
85 depends on MMU && !MMU_MOTOROLA 96 depends on MMU && !MMU_MOTOROLA && !MMU_COLDFIRE
86 97
87menu "Platform setup" 98menu "Platform setup"
88 99
diff --git a/arch/m68k/Kconfig.cpu b/arch/m68k/Kconfig.cpu
index e632b2d12106..8a9c767125a4 100644
--- a/arch/m68k/Kconfig.cpu
+++ b/arch/m68k/Kconfig.cpu
@@ -1,8 +1,42 @@
1comment "Processor Type" 1comment "Processor Type"
2 2
3choice
4 prompt "CPU family support"
5 default M68KCLASSIC if MMU
6 default COLDFIRE if !MMU
7 help
8 The Freescale (was Motorola) M68K family of processors implements
9 the full 68000 processor instruction set.
10 The Freescale ColdFire family of processors is a modern derivitive
11 of the 68000 processor family. They are mainly targeted at embedded
12 applications, and are all System-On-Chip (SOC) devices, as opposed
13 to stand alone CPUs. They implement a subset of the original 68000
14 processor instruction set.
15 If you anticipate running this kernel on a computer with a classic
16 MC68xxx processor, select M68KCLASSIC.
17 If you anticipate running this kernel on a computer with a ColdFire
18 processor, select COLDFIRE.
19
20config M68KCLASSIC
21 bool "Classic M68K CPU family support"
22
23config COLDFIRE
24 bool "Coldfire CPU family support"
25 select GENERIC_GPIO
26 select ARCH_REQUIRE_GPIOLIB
27 select CPU_HAS_NO_BITFIELDS
28 select CPU_HAS_NO_MULDIV64
29 select GENERIC_CSUM
30
31endchoice
32
33if M68KCLASSIC
34
3config M68000 35config M68000
4 bool 36 bool
5 select CPU_HAS_NO_BITFIELDS 37 select CPU_HAS_NO_BITFIELDS
38 select CPU_HAS_NO_MULDIV64
39 select GENERIC_CSUM
6 help 40 help
7 The Freescale (was Motorola) 68000 CPU is the first generation of 41 The Freescale (was Motorola) 68000 CPU is the first generation of
8 the well known M68K family of processors. The CPU core as well as 42 the well known M68K family of processors. The CPU core as well as
@@ -18,21 +52,11 @@ config MCPU32
18 based on the 68020 processor. For the most part it is used in 52 based on the 68020 processor. For the most part it is used in
19 System-On-Chip parts, and does not contain a paging MMU. 53 System-On-Chip parts, and does not contain a paging MMU.
20 54
21config COLDFIRE
22 bool
23 select GENERIC_GPIO
24 select ARCH_REQUIRE_GPIOLIB
25 select CPU_HAS_NO_BITFIELDS
26 help
27 The Freescale ColdFire family of processors is a modern derivitive
28 of the 68000 processor family. They are mainly targeted at embedded
29 applications, and are all System-On-Chip (SOC) devices, as opposed
30 to stand alone CPUs. They implement a subset of the original 68000
31 processor instruction set.
32
33config M68020 55config M68020
34 bool "68020 support" 56 bool "68020 support"
35 depends on MMU 57 depends on MMU
58 select GENERIC_ATOMIC64
59 select CPU_HAS_ADDRESS_SPACES
36 help 60 help
37 If you anticipate running this kernel on a computer with a MC68020 61 If you anticipate running this kernel on a computer with a MC68020
38 processor, say Y. Otherwise, say N. Note that the 68020 requires a 62 processor, say Y. Otherwise, say N. Note that the 68020 requires a
@@ -42,6 +66,8 @@ config M68020
42config M68030 66config M68030
43 bool "68030 support" 67 bool "68030 support"
44 depends on MMU && !MMU_SUN3 68 depends on MMU && !MMU_SUN3
69 select GENERIC_ATOMIC64
70 select CPU_HAS_ADDRESS_SPACES
45 help 71 help
46 If you anticipate running this kernel on a computer with a MC68030 72 If you anticipate running this kernel on a computer with a MC68030
47 processor, say Y. Otherwise, say N. Note that a MC68EC030 will not 73 processor, say Y. Otherwise, say N. Note that a MC68EC030 will not
@@ -50,6 +76,8 @@ config M68030
50config M68040 76config M68040
51 bool "68040 support" 77 bool "68040 support"
52 depends on MMU && !MMU_SUN3 78 depends on MMU && !MMU_SUN3
79 select GENERIC_ATOMIC64
80 select CPU_HAS_ADDRESS_SPACES
53 help 81 help
54 If you anticipate running this kernel on a computer with a MC68LC040 82 If you anticipate running this kernel on a computer with a MC68LC040
55 or MC68040 processor, say Y. Otherwise, say N. Note that an 83 or MC68040 processor, say Y. Otherwise, say N. Note that an
@@ -59,6 +87,8 @@ config M68040
59config M68060 87config M68060
60 bool "68060 support" 88 bool "68060 support"
61 depends on MMU && !MMU_SUN3 89 depends on MMU && !MMU_SUN3
90 select GENERIC_ATOMIC64
91 select CPU_HAS_ADDRESS_SPACES
62 help 92 help
63 If you anticipate running this kernel on a computer with a MC68060 93 If you anticipate running this kernel on a computer with a MC68060
64 processor, say Y. Otherwise, say N. 94 processor, say Y. Otherwise, say N.
@@ -91,10 +121,13 @@ config M68360
91 help 121 help
92 Motorola 68360 processor support. 122 Motorola 68360 processor support.
93 123
124endif # M68KCLASSIC
125
126if COLDFIRE
127
94config M5206 128config M5206
95 bool "MCF5206" 129 bool "MCF5206"
96 depends on !MMU 130 depends on !MMU
97 select COLDFIRE
98 select COLDFIRE_SW_A7 131 select COLDFIRE_SW_A7
99 select HAVE_MBAR 132 select HAVE_MBAR
100 help 133 help
@@ -103,7 +136,6 @@ config M5206
103config M5206e 136config M5206e
104 bool "MCF5206e" 137 bool "MCF5206e"
105 depends on !MMU 138 depends on !MMU
106 select COLDFIRE
107 select COLDFIRE_SW_A7 139 select COLDFIRE_SW_A7
108 select HAVE_MBAR 140 select HAVE_MBAR
109 help 141 help
@@ -112,7 +144,6 @@ config M5206e
112config M520x 144config M520x
113 bool "MCF520x" 145 bool "MCF520x"
114 depends on !MMU 146 depends on !MMU
115 select COLDFIRE
116 select GENERIC_CLOCKEVENTS 147 select GENERIC_CLOCKEVENTS
117 select HAVE_CACHE_SPLIT 148 select HAVE_CACHE_SPLIT
118 help 149 help
@@ -121,7 +152,6 @@ config M520x
121config M523x 152config M523x
122 bool "MCF523x" 153 bool "MCF523x"
123 depends on !MMU 154 depends on !MMU
124 select COLDFIRE
125 select GENERIC_CLOCKEVENTS 155 select GENERIC_CLOCKEVENTS
126 select HAVE_CACHE_SPLIT 156 select HAVE_CACHE_SPLIT
127 select HAVE_IPSBAR 157 select HAVE_IPSBAR
@@ -131,7 +161,6 @@ config M523x
131config M5249 161config M5249
132 bool "MCF5249" 162 bool "MCF5249"
133 depends on !MMU 163 depends on !MMU
134 select COLDFIRE
135 select COLDFIRE_SW_A7 164 select COLDFIRE_SW_A7
136 select HAVE_MBAR 165 select HAVE_MBAR
137 help 166 help
@@ -143,7 +172,6 @@ config M527x
143config M5271 172config M5271
144 bool "MCF5271" 173 bool "MCF5271"
145 depends on !MMU 174 depends on !MMU
146 select COLDFIRE
147 select M527x 175 select M527x
148 select HAVE_CACHE_SPLIT 176 select HAVE_CACHE_SPLIT
149 select HAVE_IPSBAR 177 select HAVE_IPSBAR
@@ -154,7 +182,6 @@ config M5271
154config M5272 182config M5272
155 bool "MCF5272" 183 bool "MCF5272"
156 depends on !MMU 184 depends on !MMU
157 select COLDFIRE
158 select COLDFIRE_SW_A7 185 select COLDFIRE_SW_A7
159 select HAVE_MBAR 186 select HAVE_MBAR
160 help 187 help
@@ -163,7 +190,6 @@ config M5272
163config M5275 190config M5275
164 bool "MCF5275" 191 bool "MCF5275"
165 depends on !MMU 192 depends on !MMU
166 select COLDFIRE
167 select M527x 193 select M527x
168 select HAVE_CACHE_SPLIT 194 select HAVE_CACHE_SPLIT
169 select HAVE_IPSBAR 195 select HAVE_IPSBAR
@@ -174,7 +200,6 @@ config M5275
174config M528x 200config M528x
175 bool "MCF528x" 201 bool "MCF528x"
176 depends on !MMU 202 depends on !MMU
177 select COLDFIRE
178 select GENERIC_CLOCKEVENTS 203 select GENERIC_CLOCKEVENTS
179 select HAVE_CACHE_SPLIT 204 select HAVE_CACHE_SPLIT
180 select HAVE_IPSBAR 205 select HAVE_IPSBAR
@@ -184,7 +209,6 @@ config M528x
184config M5307 209config M5307
185 bool "MCF5307" 210 bool "MCF5307"
186 depends on !MMU 211 depends on !MMU
187 select COLDFIRE
188 select COLDFIRE_SW_A7 212 select COLDFIRE_SW_A7
189 select HAVE_CACHE_CB 213 select HAVE_CACHE_CB
190 select HAVE_MBAR 214 select HAVE_MBAR
@@ -194,7 +218,6 @@ config M5307
194config M532x 218config M532x
195 bool "MCF532x" 219 bool "MCF532x"
196 depends on !MMU 220 depends on !MMU
197 select COLDFIRE
198 select HAVE_CACHE_CB 221 select HAVE_CACHE_CB
199 help 222 help
200 Freescale (Motorola) ColdFire 532x processor support. 223 Freescale (Motorola) ColdFire 532x processor support.
@@ -202,7 +225,6 @@ config M532x
202config M5407 225config M5407
203 bool "MCF5407" 226 bool "MCF5407"
204 depends on !MMU 227 depends on !MMU
205 select COLDFIRE
206 select COLDFIRE_SW_A7 228 select COLDFIRE_SW_A7
207 select HAVE_CACHE_CB 229 select HAVE_CACHE_CB
208 select HAVE_MBAR 230 select HAVE_MBAR
@@ -214,9 +236,8 @@ config M54xx
214 236
215config M547x 237config M547x
216 bool "MCF547x" 238 bool "MCF547x"
217 depends on !MMU
218 select COLDFIRE
219 select M54xx 239 select M54xx
240 select MMU_COLDFIRE if MMU
220 select HAVE_CACHE_CB 241 select HAVE_CACHE_CB
221 select HAVE_MBAR 242 select HAVE_MBAR
222 help 243 help
@@ -224,14 +245,15 @@ config M547x
224 245
225config M548x 246config M548x
226 bool "MCF548x" 247 bool "MCF548x"
227 depends on !MMU 248 select MMU_COLDFIRE if MMU
228 select COLDFIRE
229 select M54xx 249 select M54xx
230 select HAVE_CACHE_CB 250 select HAVE_CACHE_CB
231 select HAVE_MBAR 251 select HAVE_MBAR
232 help 252 help
233 Freescale ColdFire 5480/5481/5482/5483/5484/5485 processor support. 253 Freescale ColdFire 5480/5481/5482/5483/5484/5485 processor support.
234 254
255endif # COLDFIRE
256
235 257
236comment "Processor Specific Options" 258comment "Processor Specific Options"
237 259
diff --git a/arch/m68k/Kconfig.debug b/arch/m68k/Kconfig.debug
index 2bdb1b01115c..af4fd5f8f8d5 100644
--- a/arch/m68k/Kconfig.debug
+++ b/arch/m68k/Kconfig.debug
@@ -2,6 +2,14 @@ menu "Kernel hacking"
2 2
3source "lib/Kconfig.debug" 3source "lib/Kconfig.debug"
4 4
5config BOOTPARAM
6 bool 'Compiled-in Kernel Boot Parameter'
7
8config BOOTPARAM_STRING
9 string 'Kernel Boot Parameter'
10 default 'console=ttyS0,19200'
11 depends on BOOTPARAM
12
5if !MMU 13if !MMU
6 14
7config FULLDEBUG 15config FULLDEBUG
@@ -15,14 +23,6 @@ config HIGHPROFILE
15 help 23 help
16 Use a fast secondary clock to produce profiling information. 24 Use a fast secondary clock to produce profiling information.
17 25
18config BOOTPARAM
19 bool 'Compiled-in Kernel Boot Parameter'
20
21config BOOTPARAM_STRING
22 string 'Kernel Boot Parameter'
23 default 'console=ttyS0,19200'
24 depends on BOOTPARAM
25
26config NO_KERNEL_MSG 26config NO_KERNEL_MSG
27 bool "Suppress Kernel BUG Messages" 27 bool "Suppress Kernel BUG Messages"
28 help 28 help
diff --git a/arch/m68k/Kconfig.machine b/arch/m68k/Kconfig.machine
index ef4a26aff780..7cdf6b010381 100644
--- a/arch/m68k/Kconfig.machine
+++ b/arch/m68k/Kconfig.machine
@@ -1,5 +1,7 @@
1comment "Machine Types" 1comment "Machine Types"
2 2
3if M68KCLASSIC
4
3config AMIGA 5config AMIGA
4 bool "Amiga support" 6 bool "Amiga support"
5 depends on MMU 7 depends on MMU
@@ -130,6 +132,8 @@ config SUN3
130 132
131 If you don't want to compile a kernel exclusively for a Sun 3, say N. 133 If you don't want to compile a kernel exclusively for a Sun 3, say N.
132 134
135endif # M68KCLASSIC
136
133config PILOT 137config PILOT
134 bool 138 bool
135 139
diff --git a/arch/m68k/include/asm/anchor.h b/arch/m68k/include/asm/anchor.h
deleted file mode 100644
index 871c0d5cfc3d..000000000000
--- a/arch/m68k/include/asm/anchor.h
+++ /dev/null
@@ -1,112 +0,0 @@
1/****************************************************************************/
2
3/*
4 * anchor.h -- Anchor CO-MEM Lite PCI host bridge part.
5 *
6 * (C) Copyright 2000, Moreton Bay (www.moreton.com.au)
7 */
8
9/****************************************************************************/
10#ifndef anchor_h
11#define anchor_h
12/****************************************************************************/
13
14/*
15 * Define basic addressing info.
16 */
17#if defined(CONFIG_M5407C3)
18#define COMEM_BASE 0xFFFF0000 /* Base of CO-MEM address space */
19#define COMEM_IRQ 25 /* IRQ of anchor part */
20#else
21#define COMEM_BASE 0x80000000 /* Base of CO-MEM address space */
22#define COMEM_IRQ 25 /* IRQ of anchor part */
23#endif
24
25/****************************************************************************/
26
27/*
28 * 4-byte registers of CO-MEM, so adjust register addresses for
29 * easy access. Handy macro for word access too.
30 */
31#define LREG(a) ((a) >> 2)
32#define WREG(a) ((a) >> 1)
33
34
35/*
36 * Define base addresses within CO-MEM Lite register address space.
37 */
38#define COMEM_I2O 0x0000 /* I2O registers */
39#define COMEM_OPREGS 0x0400 /* Operation registers */
40#define COMEM_PCIBUS 0x2000 /* Direct access to PCI bus */
41#define COMEM_SHMEM 0x4000 /* Shared memory region */
42
43#define COMEM_SHMEMSIZE 0x4000 /* Size of shared memory */
44
45
46/*
47 * Define CO-MEM Registers.
48 */
49#define COMEM_I2OHISR 0x0030 /* I2O host interrupt status */
50#define COMEM_I2OHIMR 0x0034 /* I2O host interrupt mask */
51#define COMEM_I2OLISR 0x0038 /* I2O local interrupt status */
52#define COMEM_I2OLIMR 0x003c /* I2O local interrupt mask */
53#define COMEM_IBFPFIFO 0x0040 /* I2O inbound free/post FIFO */
54#define COMEM_OBPFFIFO 0x0044 /* I2O outbound post/free FIFO */
55#define COMEM_IBPFFIFO 0x0048 /* I2O inbound post/free FIFO */
56#define COMEM_OBFPFIFO 0x004c /* I2O outbound free/post FIFO */
57
58#define COMEM_DAHBASE 0x0460 /* Direct access base address */
59
60#define COMEM_NVCMD 0x04a0 /* I2C serial command */
61#define COMEM_NVREAD 0x04a4 /* I2C serial read */
62#define COMEM_NVSTAT 0x04a8 /* I2C status */
63
64#define COMEM_DMALBASE 0x04b0 /* DMA local base address */
65#define COMEM_DMAHBASE 0x04b4 /* DMA host base address */
66#define COMEM_DMASIZE 0x04b8 /* DMA size */
67#define COMEM_DMACTL 0x04bc /* DMA control */
68
69#define COMEM_HCTL 0x04e0 /* Host control */
70#define COMEM_HINT 0x04e4 /* Host interrupt control/status */
71#define COMEM_HLDATA 0x04e8 /* Host to local data mailbox */
72#define COMEM_LINT 0x04f4 /* Local interrupt contole status */
73#define COMEM_LHDATA 0x04f8 /* Local to host data mailbox */
74
75#define COMEM_LBUSCFG 0x04fc /* Local bus configuration */
76
77
78/*
79 * Commands and flags for use with Direct Access Register.
80 */
81#define COMEM_DA_IACK 0x00000000 /* Interrupt acknowledge (read) */
82#define COMEM_DA_SPCL 0x00000010 /* Special cycle (write) */
83#define COMEM_DA_MEMRD 0x00000004 /* Memory read cycle */
84#define COMEM_DA_MEMWR 0x00000004 /* Memory write cycle */
85#define COMEM_DA_IORD 0x00000002 /* I/O read cycle */
86#define COMEM_DA_IOWR 0x00000002 /* I/O write cycle */
87#define COMEM_DA_CFGRD 0x00000006 /* Configuration read cycle */
88#define COMEM_DA_CFGWR 0x00000006 /* Configuration write cycle */
89
90#define COMEM_DA_ADDR(a) ((a) & 0xffffe000)
91
92#define COMEM_DA_OFFSET(a) ((a) & 0x00001fff)
93
94
95/*
96 * The PCI bus will be limited in what slots will actually be used.
97 * Define valid device numbers for different boards.
98 */
99#if defined(CONFIG_M5407C3)
100#define COMEM_MINDEV 14 /* Minimum valid DEVICE */
101#define COMEM_MAXDEV 14 /* Maximum valid DEVICE */
102#define COMEM_BRIDGEDEV 15 /* Slot bridge is in */
103#else
104#define COMEM_MINDEV 0 /* Minimum valid DEVICE */
105#define COMEM_MAXDEV 3 /* Maximum valid DEVICE */
106#endif
107
108#define COMEM_MAXPCI (COMEM_MAXDEV+1) /* Maximum PCI devices */
109
110
111/****************************************************************************/
112#endif /* anchor_h */
diff --git a/arch/m68k/include/asm/atomic.h b/arch/m68k/include/asm/atomic.h
index 65c6be6c8180..4eba796c00d4 100644
--- a/arch/m68k/include/asm/atomic.h
+++ b/arch/m68k/include/asm/atomic.h
@@ -55,6 +55,16 @@ static inline int atomic_dec_and_test(atomic_t *v)
55 return c != 0; 55 return c != 0;
56} 56}
57 57
58static inline int atomic_dec_and_test_lt(atomic_t *v)
59{
60 char c;
61 __asm__ __volatile__(
62 "subql #1,%1; slt %0"
63 : "=d" (c), "=m" (*v)
64 : "m" (*v));
65 return c != 0;
66}
67
58static inline int atomic_inc_and_test(atomic_t *v) 68static inline int atomic_inc_and_test(atomic_t *v)
59{ 69{
60 char c; 70 char c;
diff --git a/arch/m68k/include/asm/cacheflush_mm.h b/arch/m68k/include/asm/cacheflush_mm.h
index 73de7c89d8e0..8104bd874649 100644
--- a/arch/m68k/include/asm/cacheflush_mm.h
+++ b/arch/m68k/include/asm/cacheflush_mm.h
@@ -2,23 +2,89 @@
2#define _M68K_CACHEFLUSH_H 2#define _M68K_CACHEFLUSH_H
3 3
4#include <linux/mm.h> 4#include <linux/mm.h>
5#ifdef CONFIG_COLDFIRE
6#include <asm/mcfsim.h>
7#endif
5 8
6/* cache code */ 9/* cache code */
7#define FLUSH_I_AND_D (0x00000808) 10#define FLUSH_I_AND_D (0x00000808)
8#define FLUSH_I (0x00000008) 11#define FLUSH_I (0x00000008)
9 12
13#ifndef ICACHE_MAX_ADDR
14#define ICACHE_MAX_ADDR 0
15#define ICACHE_SET_MASK 0
16#define DCACHE_MAX_ADDR 0
17#define DCACHE_SETMASK 0
18#endif
19
20static inline void flush_cf_icache(unsigned long start, unsigned long end)
21{
22 unsigned long set;
23
24 for (set = start; set <= end; set += (0x10 - 3)) {
25 __asm__ __volatile__ (
26 "cpushl %%ic,(%0)\n\t"
27 "addq%.l #1,%0\n\t"
28 "cpushl %%ic,(%0)\n\t"
29 "addq%.l #1,%0\n\t"
30 "cpushl %%ic,(%0)\n\t"
31 "addq%.l #1,%0\n\t"
32 "cpushl %%ic,(%0)"
33 : "=a" (set)
34 : "a" (set));
35 }
36}
37
38static inline void flush_cf_dcache(unsigned long start, unsigned long end)
39{
40 unsigned long set;
41
42 for (set = start; set <= end; set += (0x10 - 3)) {
43 __asm__ __volatile__ (
44 "cpushl %%dc,(%0)\n\t"
45 "addq%.l #1,%0\n\t"
46 "cpushl %%dc,(%0)\n\t"
47 "addq%.l #1,%0\n\t"
48 "cpushl %%dc,(%0)\n\t"
49 "addq%.l #1,%0\n\t"
50 "cpushl %%dc,(%0)"
51 : "=a" (set)
52 : "a" (set));
53 }
54}
55
56static inline void flush_cf_bcache(unsigned long start, unsigned long end)
57{
58 unsigned long set;
59
60 for (set = start; set <= end; set += (0x10 - 3)) {
61 __asm__ __volatile__ (
62 "cpushl %%bc,(%0)\n\t"
63 "addq%.l #1,%0\n\t"
64 "cpushl %%bc,(%0)\n\t"
65 "addq%.l #1,%0\n\t"
66 "cpushl %%bc,(%0)\n\t"
67 "addq%.l #1,%0\n\t"
68 "cpushl %%bc,(%0)"
69 : "=a" (set)
70 : "a" (set));
71 }
72}
73
10/* 74/*
11 * Cache handling functions 75 * Cache handling functions
12 */ 76 */
13 77
14static inline void flush_icache(void) 78static inline void flush_icache(void)
15{ 79{
16 if (CPU_IS_040_OR_060) 80 if (CPU_IS_COLDFIRE) {
81 flush_cf_icache(0, ICACHE_MAX_ADDR);
82 } else if (CPU_IS_040_OR_060) {
17 asm volatile ( "nop\n" 83 asm volatile ( "nop\n"
18 " .chip 68040\n" 84 " .chip 68040\n"
19 " cpusha %bc\n" 85 " cpusha %bc\n"
20 " .chip 68k"); 86 " .chip 68k");
21 else { 87 } else {
22 unsigned long tmp; 88 unsigned long tmp;
23 asm volatile ( "movec %%cacr,%0\n" 89 asm volatile ( "movec %%cacr,%0\n"
24 " or.w %1,%0\n" 90 " or.w %1,%0\n"
@@ -51,12 +117,14 @@ extern void cache_push_v(unsigned long vaddr, int len);
51 process changes. */ 117 process changes. */
52#define __flush_cache_all() \ 118#define __flush_cache_all() \
53({ \ 119({ \
54 if (CPU_IS_040_OR_060) \ 120 if (CPU_IS_COLDFIRE) { \
121 flush_cf_dcache(0, DCACHE_MAX_ADDR); \
122 } else if (CPU_IS_040_OR_060) { \
55 __asm__ __volatile__("nop\n\t" \ 123 __asm__ __volatile__("nop\n\t" \
56 ".chip 68040\n\t" \ 124 ".chip 68040\n\t" \
57 "cpusha %dc\n\t" \ 125 "cpusha %dc\n\t" \
58 ".chip 68k"); \ 126 ".chip 68k"); \
59 else { \ 127 } else { \
60 unsigned long _tmp; \ 128 unsigned long _tmp; \
61 __asm__ __volatile__("movec %%cacr,%0\n\t" \ 129 __asm__ __volatile__("movec %%cacr,%0\n\t" \
62 "orw %1,%0\n\t" \ 130 "orw %1,%0\n\t" \
@@ -112,7 +180,17 @@ static inline void flush_cache_page(struct vm_area_struct *vma, unsigned long vm
112/* RZ: use cpush %bc instead of cpush %dc, cinv %ic */ 180/* RZ: use cpush %bc instead of cpush %dc, cinv %ic */
113static inline void __flush_page_to_ram(void *vaddr) 181static inline void __flush_page_to_ram(void *vaddr)
114{ 182{
115 if (CPU_IS_040_OR_060) { 183 if (CPU_IS_COLDFIRE) {
184 unsigned long addr, start, end;
185 addr = ((unsigned long) vaddr) & ~(PAGE_SIZE - 1);
186 start = addr & ICACHE_SET_MASK;
187 end = (addr + PAGE_SIZE - 1) & ICACHE_SET_MASK;
188 if (start > end) {
189 flush_cf_bcache(0, end);
190 end = ICACHE_MAX_ADDR;
191 }
192 flush_cf_bcache(start, end);
193 } else if (CPU_IS_040_OR_060) {
116 __asm__ __volatile__("nop\n\t" 194 __asm__ __volatile__("nop\n\t"
117 ".chip 68040\n\t" 195 ".chip 68040\n\t"
118 "cpushp %%bc,(%0)\n\t" 196 "cpushp %%bc,(%0)\n\t"
diff --git a/arch/m68k/include/asm/checksum.h b/arch/m68k/include/asm/checksum.h
index ec514485c8b6..2f88d867c711 100644
--- a/arch/m68k/include/asm/checksum.h
+++ b/arch/m68k/include/asm/checksum.h
@@ -3,6 +3,10 @@
3 3
4#include <linux/in6.h> 4#include <linux/in6.h>
5 5
6#ifdef CONFIG_GENERIC_CSUM
7#include <asm-generic/checksum.h>
8#else
9
6/* 10/*
7 * computes the checksum of a memory block at buff, length len, 11 * computes the checksum of a memory block at buff, length len,
8 * and adds in "sum" (32-bit) 12 * and adds in "sum" (32-bit)
@@ -34,30 +38,6 @@ extern __wsum csum_partial_copy_nocheck(const void *src,
34 void *dst, int len, 38 void *dst, int len,
35 __wsum sum); 39 __wsum sum);
36 40
37
38#ifdef CONFIG_COLDFIRE
39
40/*
41 * The ColdFire cores don't support all the 68k instructions used
42 * in the optimized checksum code below. So it reverts back to using
43 * more standard C coded checksums. The fast checksum code is
44 * significantly larger than the optimized version, so it is not
45 * inlined here.
46 */
47__sum16 ip_fast_csum(const void *iph, unsigned int ihl);
48
49static inline __sum16 csum_fold(__wsum sum)
50{
51 unsigned int tmp = (__force u32)sum;
52
53 tmp = (tmp & 0xffff) + (tmp >> 16);
54 tmp = (tmp & 0xffff) + (tmp >> 16);
55
56 return (__force __sum16)~tmp;
57}
58
59#else
60
61/* 41/*
62 * This is a version of ip_fast_csum() optimized for IP headers, 42 * This is a version of ip_fast_csum() optimized for IP headers,
63 * which always checksum on 4 octet boundaries. 43 * which always checksum on 4 octet boundaries.
@@ -97,8 +77,6 @@ static inline __sum16 csum_fold(__wsum sum)
97 return (__force __sum16)~sum; 77 return (__force __sum16)~sum;
98} 78}
99 79
100#endif /* CONFIG_COLDFIRE */
101
102static inline __wsum 80static inline __wsum
103csum_tcpudp_nofold(__be32 saddr, __be32 daddr, unsigned short len, 81csum_tcpudp_nofold(__be32 saddr, __be32 daddr, unsigned short len,
104 unsigned short proto, __wsum sum) 82 unsigned short proto, __wsum sum)
@@ -167,4 +145,5 @@ csum_ipv6_magic(const struct in6_addr *saddr, const struct in6_addr *daddr,
167 return csum_fold(sum); 145 return csum_fold(sum);
168} 146}
169 147
148#endif /* CONFIG_GENERIC_CSUM */
170#endif /* _M68K_CHECKSUM_H */ 149#endif /* _M68K_CHECKSUM_H */
diff --git a/arch/m68k/include/asm/div64.h b/arch/m68k/include/asm/div64.h
index edb66148a71d..444ea8a09e9f 100644
--- a/arch/m68k/include/asm/div64.h
+++ b/arch/m68k/include/asm/div64.h
@@ -1,7 +1,9 @@
1#ifndef _M68K_DIV64_H 1#ifndef _M68K_DIV64_H
2#define _M68K_DIV64_H 2#define _M68K_DIV64_H
3 3
4#ifdef CONFIG_MMU 4#ifdef CONFIG_CPU_HAS_NO_MULDIV64
5#include <asm-generic/div64.h>
6#else
5 7
6#include <linux/types.h> 8#include <linux/types.h>
7 9
@@ -27,8 +29,6 @@
27 __rem; \ 29 __rem; \
28}) 30})
29 31
30#else 32#endif /* CONFIG_CPU_HAS_NO_MULDIV64 */
31#include <asm-generic/div64.h>
32#endif /* CONFIG_MMU */
33 33
34#endif /* _M68K_DIV64_H */ 34#endif /* _M68K_DIV64_H */
diff --git a/arch/m68k/include/asm/elf.h b/arch/m68k/include/asm/elf.h
index 01c193d91412..e9b7cda59744 100644
--- a/arch/m68k/include/asm/elf.h
+++ b/arch/m68k/include/asm/elf.h
@@ -59,10 +59,10 @@ typedef struct user_m68kfp_struct elf_fpregset_t;
59 is actually used on ASV. */ 59 is actually used on ASV. */
60#define ELF_PLAT_INIT(_r, load_addr) _r->a1 = 0 60#define ELF_PLAT_INIT(_r, load_addr) _r->a1 = 0
61 61
62#ifndef CONFIG_SUN3 62#if defined(CONFIG_SUN3) || defined(CONFIG_COLDFIRE)
63#define ELF_EXEC_PAGESIZE 4096
64#else
65#define ELF_EXEC_PAGESIZE 8192 63#define ELF_EXEC_PAGESIZE 8192
64#else
65#define ELF_EXEC_PAGESIZE 4096
66#endif 66#endif
67 67
68/* This is the location that an ET_DYN program is loaded if exec'ed. Typical 68/* This is the location that an ET_DYN program is loaded if exec'ed. Typical
diff --git a/arch/m68k/include/asm/entry.h b/arch/m68k/include/asm/entry.h
index c3c5a8643e15..622138dc7288 100644
--- a/arch/m68k/include/asm/entry.h
+++ b/arch/m68k/include/asm/entry.h
@@ -222,16 +222,24 @@
222 * Non-MMU systems do not reserve %a2 in this way, and this definition is 222 * Non-MMU systems do not reserve %a2 in this way, and this definition is
223 * not used for them. 223 * not used for them.
224 */ 224 */
225#ifdef CONFIG_MMU
226
225#define curptr a2 227#define curptr a2
226 228
227#define GET_CURRENT(tmp) get_current tmp 229#define GET_CURRENT(tmp) get_current tmp
228.macro get_current reg=%d0 230.macro get_current reg=%d0
229 movel %sp,\reg 231 movel %sp,\reg
230 andw #-THREAD_SIZE,\reg 232 andl #-THREAD_SIZE,\reg
231 movel \reg,%curptr 233 movel \reg,%curptr
232 movel %curptr@,%curptr 234 movel %curptr@,%curptr
233.endm 235.endm
234 236
237#else
238
239#define GET_CURRENT(tmp)
240
241#endif /* CONFIG_MMU */
242
235#else /* C source */ 243#else /* C source */
236 244
237#define STR(X) STR1(X) 245#define STR(X) STR1(X)
diff --git a/arch/m68k/include/asm/fpu.h b/arch/m68k/include/asm/fpu.h
index ffb6b8cfc6d5..526db9da9e43 100644
--- a/arch/m68k/include/asm/fpu.h
+++ b/arch/m68k/include/asm/fpu.h
@@ -12,6 +12,8 @@
12#define FPSTATESIZE (96) 12#define FPSTATESIZE (96)
13#elif defined(CONFIG_M68KFPU_EMU) 13#elif defined(CONFIG_M68KFPU_EMU)
14#define FPSTATESIZE (28) 14#define FPSTATESIZE (28)
15#elif defined(CONFIG_COLDFIRE) && defined(CONFIG_MMU)
16#define FPSTATESIZE (16)
15#elif defined(CONFIG_M68060) 17#elif defined(CONFIG_M68060)
16#define FPSTATESIZE (12) 18#define FPSTATESIZE (12)
17#else 19#else
diff --git a/arch/m68k/include/asm/gpio.h b/arch/m68k/include/asm/gpio.h
index b2046839f4b2..00d0071de4c3 100644
--- a/arch/m68k/include/asm/gpio.h
+++ b/arch/m68k/include/asm/gpio.h
@@ -225,7 +225,8 @@ static inline void gpio_set_value(unsigned gpio, int value)
225 225
226static inline int gpio_to_irq(unsigned gpio) 226static inline int gpio_to_irq(unsigned gpio)
227{ 227{
228 return (gpio < MCFGPIO_IRQ_MAX) ? gpio + MCFGPIO_IRQ_VECBASE : -EINVAL; 228 return (gpio < MCFGPIO_IRQ_MAX) ? gpio + MCFGPIO_IRQ_VECBASE
229 : __gpio_to_irq(gpio);
229} 230}
230 231
231static inline int irq_to_gpio(unsigned irq) 232static inline int irq_to_gpio(unsigned irq)
diff --git a/arch/m68k/include/asm/irq.h b/arch/m68k/include/asm/irq.h
index 6198df5ff245..0e89fa05de0e 100644
--- a/arch/m68k/include/asm/irq.h
+++ b/arch/m68k/include/asm/irq.h
@@ -25,7 +25,8 @@
25#define NR_IRQS 0 25#define NR_IRQS 0
26#endif 26#endif
27 27
28#ifdef CONFIG_MMU 28#if defined(CONFIG_M68020) || defined(CONFIG_M68030) || \
29 defined(CONFIG_M68040) || defined(CONFIG_M68060)
29 30
30/* 31/*
31 * Interrupt source definitions 32 * Interrupt source definitions
@@ -80,7 +81,7 @@ extern unsigned int irq_canonicalize(unsigned int irq);
80 81
81#else 82#else
82#define irq_canonicalize(irq) (irq) 83#define irq_canonicalize(irq) (irq)
83#endif /* CONFIG_MMU */ 84#endif /* !(CONFIG_M68020 || CONFIG_M68030 || CONFIG_M68040 || CONFIG_M68060) */
84 85
85asmlinkage void do_IRQ(int irq, struct pt_regs *regs); 86asmlinkage void do_IRQ(int irq, struct pt_regs *regs);
86extern atomic_t irq_err_count; 87extern atomic_t irq_err_count;
diff --git a/arch/m68k/include/asm/m54xxacr.h b/arch/m68k/include/asm/m54xxacr.h
index 16a1835f9b2a..47906aafbf67 100644
--- a/arch/m68k/include/asm/m54xxacr.h
+++ b/arch/m68k/include/asm/m54xxacr.h
@@ -39,8 +39,12 @@
39#define ACR_CM_OFF_PRE 0x00000040 /* No cache, precise */ 39#define ACR_CM_OFF_PRE 0x00000040 /* No cache, precise */
40#define ACR_CM_OFF_IMP 0x00000060 /* No cache, imprecise */ 40#define ACR_CM_OFF_IMP 0x00000060 /* No cache, imprecise */
41#define ACR_CM 0x00000060 /* Cache mode mask */ 41#define ACR_CM 0x00000060 /* Cache mode mask */
42#define ACR_SP 0x00000008 /* Supervisor protect */
42#define ACR_WPROTECT 0x00000004 /* Write protect */ 43#define ACR_WPROTECT 0x00000004 /* Write protect */
43 44
45#define ACR_BA(x) ((x) & 0xff000000)
46#define ACR_ADMSK(x) ((((x) - 1) & 0xff000000) >> 8)
47
44#if defined(CONFIG_M5407) 48#if defined(CONFIG_M5407)
45 49
46#define ICACHE_SIZE 0x4000 /* instruction - 16k */ 50#define ICACHE_SIZE 0x4000 /* instruction - 16k */
@@ -56,6 +60,11 @@
56#define CACHE_LINE_SIZE 0x0010 /* 16 bytes */ 60#define CACHE_LINE_SIZE 0x0010 /* 16 bytes */
57#define CACHE_WAYS 4 /* 4 ways */ 61#define CACHE_WAYS 4 /* 4 ways */
58 62
63#define ICACHE_SET_MASK ((ICACHE_SIZE / 64 - 1) << CACHE_WAYS)
64#define DCACHE_SET_MASK ((DCACHE_SIZE / 64 - 1) << CACHE_WAYS)
65#define ICACHE_MAX_ADDR ICACHE_SET_MASK
66#define DCACHE_MAX_ADDR DCACHE_SET_MASK
67
59/* 68/*
60 * Version 4 cores have a true harvard style separate instruction 69 * Version 4 cores have a true harvard style separate instruction
61 * and data cache. Enable data and instruction caches, also enable write 70 * and data cache. Enable data and instruction caches, also enable write
@@ -73,6 +82,27 @@
73#else 82#else
74#define CACHE_MODE (CACR_DEC+CACR_DESB+CACR_DDCM_P+CACR_BEC+CACR_IEC+CACR_EUSP) 83#define CACHE_MODE (CACR_DEC+CACR_DESB+CACR_DDCM_P+CACR_BEC+CACR_IEC+CACR_EUSP)
75#endif 84#endif
85#define CACHE_INIT (CACR_DCINVA+CACR_BCINVA+CACR_ICINVA)
86
87#if defined(CONFIG_MMU)
88/*
89 * If running with the MMU enabled then we need to map the internal
90 * register region as non-cacheable. And then we map all our RAM as
91 * cacheable and supervisor access only.
92 */
93#define ACR0_MODE (ACR_BA(CONFIG_MBAR)+ACR_ADMSK(0x1000000)+ \
94 ACR_ENABLE+ACR_SUPER+ACR_CM_OFF_PRE+ACR_SP)
95#define ACR1_MODE (ACR_BA(CONFIG_RAMBASE)+ACR_ADMSK(CONFIG_RAMSIZE)+ \
96 ACR_ENABLE+ACR_SUPER+ACR_SP)
97#define ACR2_MODE 0
98#define ACR3_MODE (ACR_BA(CONFIG_RAMBASE)+ACR_ADMSK(CONFIG_RAMSIZE)+ \
99 ACR_ENABLE+ACR_SUPER+ACR_SP)
100
101#else
102
103/*
104 * For the non-MMU enabled case we map all of RAM as cacheable.
105 */
76#if defined(CONFIG_CACHE_COPYBACK) 106#if defined(CONFIG_CACHE_COPYBACK)
77#define DATA_CACHE_MODE (ACR_ENABLE+ACR_ANY+ACR_CM_CP) 107#define DATA_CACHE_MODE (ACR_ENABLE+ACR_ANY+ACR_CM_CP)
78#else 108#else
@@ -80,7 +110,6 @@
80#endif 110#endif
81#define INSN_CACHE_MODE (ACR_ENABLE+ACR_ANY) 111#define INSN_CACHE_MODE (ACR_ENABLE+ACR_ANY)
82 112
83#define CACHE_INIT (CACR_DCINVA+CACR_BCINVA+CACR_ICINVA)
84#define CACHE_INVALIDATE (CACHE_MODE+CACR_DCINVA+CACR_BCINVA+CACR_ICINVA) 113#define CACHE_INVALIDATE (CACHE_MODE+CACR_DCINVA+CACR_BCINVA+CACR_ICINVA)
85#define CACHE_INVALIDATEI (CACHE_MODE+CACR_BCINVA+CACR_ICINVA) 114#define CACHE_INVALIDATEI (CACHE_MODE+CACR_BCINVA+CACR_ICINVA)
86#define CACHE_INVALIDATED (CACHE_MODE+CACR_DCINVA) 115#define CACHE_INVALIDATED (CACHE_MODE+CACR_DCINVA)
@@ -94,4 +123,5 @@
94#define CACHE_PUSH 123#define CACHE_PUSH
95#endif 124#endif
96 125
126#endif /* CONFIG_MMU */
97#endif /* m54xxacr_h */ 127#endif /* m54xxacr_h */
diff --git a/arch/m68k/include/asm/mcf_pgalloc.h b/arch/m68k/include/asm/mcf_pgalloc.h
new file mode 100644
index 000000000000..313f3dd23cdc
--- /dev/null
+++ b/arch/m68k/include/asm/mcf_pgalloc.h
@@ -0,0 +1,102 @@
1#ifndef M68K_MCF_PGALLOC_H
2#define M68K_MCF_PGALLOC_H
3
4#include <asm/tlb.h>
5#include <asm/tlbflush.h>
6
7extern inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
8{
9 free_page((unsigned long) pte);
10}
11
12extern const char bad_pmd_string[];
13
14extern inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
15 unsigned long address)
16{
17 unsigned long page = __get_free_page(GFP_DMA|__GFP_REPEAT);
18
19 if (!page)
20 return NULL;
21
22 memset((void *)page, 0, PAGE_SIZE);
23 return (pte_t *) (page);
24}
25
26extern inline pmd_t *pmd_alloc_kernel(pgd_t *pgd, unsigned long address)
27{
28 return (pmd_t *) pgd;
29}
30
31#define pmd_alloc_one_fast(mm, address) ({ BUG(); ((pmd_t *)1); })
32#define pmd_alloc_one(mm, address) ({ BUG(); ((pmd_t *)2); })
33
34#define pte_alloc_one_fast(mm, addr) pte_alloc_one(mm, addr)
35
36#define pmd_populate(mm, pmd, page) (pmd_val(*pmd) = \
37 (unsigned long)(page_address(page)))
38
39#define pmd_populate_kernel(mm, pmd, pte) (pmd_val(*pmd) = (unsigned long)(pte))
40
41#define pmd_pgtable(pmd) pmd_page(pmd)
42
43static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t page,
44 unsigned long address)
45{
46 __free_page(page);
47}
48
49#define __pmd_free_tlb(tlb, pmd, address) do { } while (0)
50
51static inline struct page *pte_alloc_one(struct mm_struct *mm,
52 unsigned long address)
53{
54 struct page *page = alloc_pages(GFP_DMA|__GFP_REPEAT, 0);
55 pte_t *pte;
56
57 if (!page)
58 return NULL;
59
60 pte = kmap(page);
61 if (pte) {
62 clear_page(pte);
63 __flush_page_to_ram(pte);
64 flush_tlb_kernel_page(pte);
65 nocache_page(pte);
66 }
67 kunmap(page);
68
69 return page;
70}
71
72extern inline void pte_free(struct mm_struct *mm, struct page *page)
73{
74 __free_page(page);
75}
76
77/*
78 * In our implementation, each pgd entry contains 1 pmd that is never allocated
79 * or freed. pgd_present is always 1, so this should never be called. -NL
80 */
81#define pmd_free(mm, pmd) BUG()
82
83static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
84{
85 free_page((unsigned long) pgd);
86}
87
88static inline pgd_t *pgd_alloc(struct mm_struct *mm)
89{
90 pgd_t *new_pgd;
91
92 new_pgd = (pgd_t *)__get_free_page(GFP_DMA | __GFP_NOWARN);
93 if (!new_pgd)
94 return NULL;
95 memcpy(new_pgd, swapper_pg_dir, PAGE_SIZE);
96 memset(new_pgd, 0, PAGE_OFFSET >> PGDIR_SHIFT);
97 return new_pgd;
98}
99
100#define pgd_populate(mm, pmd, pte) BUG()
101
102#endif /* M68K_MCF_PGALLOC_H */
diff --git a/arch/m68k/include/asm/mcf_pgtable.h b/arch/m68k/include/asm/mcf_pgtable.h
new file mode 100644
index 000000000000..756bde4fb4f8
--- /dev/null
+++ b/arch/m68k/include/asm/mcf_pgtable.h
@@ -0,0 +1,425 @@
1#ifndef _MCF_PGTABLE_H
2#define _MCF_PGTABLE_H
3
4#include <asm/mcfmmu.h>
5#include <asm/page.h>
6
7/*
8 * MMUDR bits, in proper place. We write these directly into the MMUDR
9 * after masking from the pte.
10 */
11#define CF_PAGE_LOCKED MMUDR_LK /* 0x00000002 */
12#define CF_PAGE_EXEC MMUDR_X /* 0x00000004 */
13#define CF_PAGE_WRITABLE MMUDR_W /* 0x00000008 */
14#define CF_PAGE_READABLE MMUDR_R /* 0x00000010 */
15#define CF_PAGE_SYSTEM MMUDR_SP /* 0x00000020 */
16#define CF_PAGE_COPYBACK MMUDR_CM_CCB /* 0x00000040 */
17#define CF_PAGE_NOCACHE MMUDR_CM_NCP /* 0x00000080 */
18
19#define CF_CACHEMASK (~MMUDR_CM_CCB)
20#define CF_PAGE_MMUDR_MASK 0x000000fe
21
22#define _PAGE_NOCACHE030 CF_PAGE_NOCACHE
23
24/*
25 * MMUTR bits, need shifting down.
26 */
27#define CF_PAGE_MMUTR_MASK 0x00000c00
28#define CF_PAGE_MMUTR_SHIFT 10
29
30#define CF_PAGE_VALID (MMUTR_V << CF_PAGE_MMUTR_SHIFT)
31#define CF_PAGE_SHARED (MMUTR_SG << CF_PAGE_MMUTR_SHIFT)
32
33/*
34 * Fake bits, not implemented in CF, will get masked out before
35 * hitting hardware.
36 */
37#define CF_PAGE_DIRTY 0x00000001
38#define CF_PAGE_FILE 0x00000200
39#define CF_PAGE_ACCESSED 0x00001000
40
41#define _PAGE_CACHE040 0x020 /* 68040 cache mode, cachable, copyback */
42#define _PAGE_NOCACHE_S 0x040 /* 68040 no-cache mode, serialized */
43#define _PAGE_NOCACHE 0x060 /* 68040 cache mode, non-serialized */
44#define _PAGE_CACHE040W 0x000 /* 68040 cache mode, cachable, write-through */
45#define _DESCTYPE_MASK 0x003
46#define _CACHEMASK040 (~0x060)
47#define _PAGE_GLOBAL040 0x400 /* 68040 global bit, used for kva descs */
48
49/*
50 * Externally used page protection values.
51 */
52#define _PAGE_PRESENT (CF_PAGE_VALID)
53#define _PAGE_ACCESSED (CF_PAGE_ACCESSED)
54#define _PAGE_DIRTY (CF_PAGE_DIRTY)
55#define _PAGE_READWRITE (CF_PAGE_READABLE \
56 | CF_PAGE_WRITABLE \
57 | CF_PAGE_SYSTEM \
58 | CF_PAGE_SHARED)
59
60/*
61 * Compound page protection values.
62 */
63#define PAGE_NONE __pgprot(CF_PAGE_VALID \
64 | CF_PAGE_ACCESSED)
65
66#define PAGE_SHARED __pgprot(CF_PAGE_VALID \
67 | CF_PAGE_ACCESSED \
68 | CF_PAGE_SHARED)
69
70#define PAGE_INIT __pgprot(CF_PAGE_VALID \
71 | CF_PAGE_READABLE \
72 | CF_PAGE_WRITABLE \
73 | CF_PAGE_EXEC \
74 | CF_PAGE_SYSTEM)
75
76#define PAGE_KERNEL __pgprot(CF_PAGE_VALID \
77 | CF_PAGE_ACCESSED \
78 | CF_PAGE_READABLE \
79 | CF_PAGE_WRITABLE \
80 | CF_PAGE_EXEC \
81 | CF_PAGE_SYSTEM)
82
83#define PAGE_COPY __pgprot(CF_PAGE_VALID \
84 | CF_PAGE_ACCESSED \
85 | CF_PAGE_READABLE \
86 | CF_PAGE_DIRTY)
87
88/*
89 * Page protections for initialising protection_map. See mm/mmap.c
90 * for use. In general, the bit positions are xwr, and P-items are
91 * private, the S-items are shared.
92 */
93#define __P000 PAGE_NONE
94#define __P001 __pgprot(CF_PAGE_VALID \
95 | CF_PAGE_ACCESSED \
96 | CF_PAGE_READABLE)
97#define __P010 __pgprot(CF_PAGE_VALID \
98 | CF_PAGE_ACCESSED \
99 | CF_PAGE_WRITABLE)
100#define __P011 __pgprot(CF_PAGE_VALID \
101 | CF_PAGE_ACCESSED \
102 | CF_PAGE_READABLE \
103 | CF_PAGE_WRITABLE)
104#define __P100 __pgprot(CF_PAGE_VALID \
105 | CF_PAGE_ACCESSED \
106 | CF_PAGE_EXEC)
107#define __P101 __pgprot(CF_PAGE_VALID \
108 | CF_PAGE_ACCESSED \
109 | CF_PAGE_READABLE \
110 | CF_PAGE_EXEC)
111#define __P110 __pgprot(CF_PAGE_VALID \
112 | CF_PAGE_ACCESSED \
113 | CF_PAGE_WRITABLE \
114 | CF_PAGE_EXEC)
115#define __P111 __pgprot(CF_PAGE_VALID \
116 | CF_PAGE_ACCESSED \
117 | CF_PAGE_READABLE \
118 | CF_PAGE_WRITABLE \
119 | CF_PAGE_EXEC)
120
121#define __S000 PAGE_NONE
122#define __S001 __pgprot(CF_PAGE_VALID \
123 | CF_PAGE_ACCESSED \
124 | CF_PAGE_READABLE)
125#define __S010 PAGE_SHARED
126#define __S011 __pgprot(CF_PAGE_VALID \
127 | CF_PAGE_ACCESSED \
128 | CF_PAGE_SHARED \
129 | CF_PAGE_READABLE)
130#define __S100 __pgprot(CF_PAGE_VALID \
131 | CF_PAGE_ACCESSED \
132 | CF_PAGE_EXEC)
133#define __S101 __pgprot(CF_PAGE_VALID \
134 | CF_PAGE_ACCESSED \
135 | CF_PAGE_READABLE \
136 | CF_PAGE_EXEC)
137#define __S110 __pgprot(CF_PAGE_VALID \
138 | CF_PAGE_ACCESSED \
139 | CF_PAGE_SHARED \
140 | CF_PAGE_EXEC)
141#define __S111 __pgprot(CF_PAGE_VALID \
142 | CF_PAGE_ACCESSED \
143 | CF_PAGE_SHARED \
144 | CF_PAGE_READABLE \
145 | CF_PAGE_EXEC)
146
147#define PTE_MASK PAGE_MASK
148#define CF_PAGE_CHG_MASK (PTE_MASK | CF_PAGE_ACCESSED | CF_PAGE_DIRTY)
149
150#ifndef __ASSEMBLY__
151
152/*
153 * Conversion functions: convert a page and protection to a page entry,
154 * and a page entry and page directory to the page they refer to.
155 */
156#define mk_pte(page, pgprot) pfn_pte(page_to_pfn(page), (pgprot))
157
158static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
159{
160 pte_val(pte) = (pte_val(pte) & CF_PAGE_CHG_MASK) | pgprot_val(newprot);
161 return pte;
162}
163
164#define pmd_set(pmdp, ptep) do {} while (0)
165
166static inline void pgd_set(pgd_t *pgdp, pmd_t *pmdp)
167{
168 pgd_val(*pgdp) = virt_to_phys(pmdp);
169}
170
171#define __pte_page(pte) ((unsigned long) (pte_val(pte) & PAGE_MASK))
172#define __pmd_page(pmd) ((unsigned long) (pmd_val(pmd)))
173
174static inline int pte_none(pte_t pte)
175{
176 return !pte_val(pte);
177}
178
179static inline int pte_present(pte_t pte)
180{
181 return pte_val(pte) & CF_PAGE_VALID;
182}
183
184static inline void pte_clear(struct mm_struct *mm, unsigned long addr,
185 pte_t *ptep)
186{
187 pte_val(*ptep) = 0;
188}
189
190#define pte_pagenr(pte) ((__pte_page(pte) - PAGE_OFFSET) >> PAGE_SHIFT)
191#define pte_page(pte) virt_to_page(__pte_page(pte))
192
193static inline int pmd_none2(pmd_t *pmd) { return !pmd_val(*pmd); }
194#define pmd_none(pmd) pmd_none2(&(pmd))
195static inline int pmd_bad2(pmd_t *pmd) { return 0; }
196#define pmd_bad(pmd) pmd_bad2(&(pmd))
197#define pmd_present(pmd) (!pmd_none2(&(pmd)))
198static inline void pmd_clear(pmd_t *pmdp) { pmd_val(*pmdp) = 0; }
199
200static inline int pgd_none(pgd_t pgd) { return 0; }
201static inline int pgd_bad(pgd_t pgd) { return 0; }
202static inline int pgd_present(pgd_t pgd) { return 1; }
203static inline void pgd_clear(pgd_t *pgdp) {}
204
205#define pte_ERROR(e) \
206 printk(KERN_ERR "%s:%d: bad pte %08lx.\n", \
207 __FILE__, __LINE__, pte_val(e))
208#define pmd_ERROR(e) \
209 printk(KERN_ERR "%s:%d: bad pmd %08lx.\n", \
210 __FILE__, __LINE__, pmd_val(e))
211#define pgd_ERROR(e) \
212 printk(KERN_ERR "%s:%d: bad pgd %08lx.\n", \
213 __FILE__, __LINE__, pgd_val(e))
214
215/*
216 * The following only work if pte_present() is true.
217 * Undefined behaviour if not...
218 * [we have the full set here even if they don't change from m68k]
219 */
220static inline int pte_read(pte_t pte)
221{
222 return pte_val(pte) & CF_PAGE_READABLE;
223}
224
225static inline int pte_write(pte_t pte)
226{
227 return pte_val(pte) & CF_PAGE_WRITABLE;
228}
229
230static inline int pte_exec(pte_t pte)
231{
232 return pte_val(pte) & CF_PAGE_EXEC;
233}
234
235static inline int pte_dirty(pte_t pte)
236{
237 return pte_val(pte) & CF_PAGE_DIRTY;
238}
239
240static inline int pte_young(pte_t pte)
241{
242 return pte_val(pte) & CF_PAGE_ACCESSED;
243}
244
245static inline int pte_file(pte_t pte)
246{
247 return pte_val(pte) & CF_PAGE_FILE;
248}
249
250static inline int pte_special(pte_t pte)
251{
252 return 0;
253}
254
255static inline pte_t pte_wrprotect(pte_t pte)
256{
257 pte_val(pte) &= ~CF_PAGE_WRITABLE;
258 return pte;
259}
260
261static inline pte_t pte_rdprotect(pte_t pte)
262{
263 pte_val(pte) &= ~CF_PAGE_READABLE;
264 return pte;
265}
266
267static inline pte_t pte_exprotect(pte_t pte)
268{
269 pte_val(pte) &= ~CF_PAGE_EXEC;
270 return pte;
271}
272
273static inline pte_t pte_mkclean(pte_t pte)
274{
275 pte_val(pte) &= ~CF_PAGE_DIRTY;
276 return pte;
277}
278
279static inline pte_t pte_mkold(pte_t pte)
280{
281 pte_val(pte) &= ~CF_PAGE_ACCESSED;
282 return pte;
283}
284
285static inline pte_t pte_mkwrite(pte_t pte)
286{
287 pte_val(pte) |= CF_PAGE_WRITABLE;
288 return pte;
289}
290
291static inline pte_t pte_mkread(pte_t pte)
292{
293 pte_val(pte) |= CF_PAGE_READABLE;
294 return pte;
295}
296
297static inline pte_t pte_mkexec(pte_t pte)
298{
299 pte_val(pte) |= CF_PAGE_EXEC;
300 return pte;
301}
302
303static inline pte_t pte_mkdirty(pte_t pte)
304{
305 pte_val(pte) |= CF_PAGE_DIRTY;
306 return pte;
307}
308
309static inline pte_t pte_mkyoung(pte_t pte)
310{
311 pte_val(pte) |= CF_PAGE_ACCESSED;
312 return pte;
313}
314
315static inline pte_t pte_mknocache(pte_t pte)
316{
317 pte_val(pte) |= 0x80 | (pte_val(pte) & ~0x40);
318 return pte;
319}
320
321static inline pte_t pte_mkcache(pte_t pte)
322{
323 pte_val(pte) &= ~CF_PAGE_NOCACHE;
324 return pte;
325}
326
327static inline pte_t pte_mkspecial(pte_t pte)
328{
329 return pte;
330}
331
332#define swapper_pg_dir kernel_pg_dir
333extern pgd_t kernel_pg_dir[PTRS_PER_PGD];
334
335/*
336 * Find an entry in a pagetable directory.
337 */
338#define pgd_index(address) ((address) >> PGDIR_SHIFT)
339#define pgd_offset(mm, address) ((mm)->pgd + pgd_index(address))
340
341/*
342 * Find an entry in a kernel pagetable directory.
343 */
344#define pgd_offset_k(address) pgd_offset(&init_mm, address)
345
346/*
347 * Find an entry in the second-level pagetable.
348 */
349static inline pmd_t *pmd_offset(pgd_t *pgd, unsigned long address)
350{
351 return (pmd_t *) pgd;
352}
353
354/*
355 * Find an entry in the third-level pagetable.
356 */
357#define __pte_offset(address) ((address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
358#define pte_offset_kernel(dir, address) \
359 ((pte_t *) __pmd_page(*(dir)) + __pte_offset(address))
360
361/*
362 * Disable caching for page at given kernel virtual address.
363 */
364static inline void nocache_page(void *vaddr)
365{
366 pgd_t *dir;
367 pmd_t *pmdp;
368 pte_t *ptep;
369 unsigned long addr = (unsigned long) vaddr;
370
371 dir = pgd_offset_k(addr);
372 pmdp = pmd_offset(dir, addr);
373 ptep = pte_offset_kernel(pmdp, addr);
374 *ptep = pte_mknocache(*ptep);
375}
376
377/*
378 * Enable caching for page at given kernel virtual address.
379 */
380static inline void cache_page(void *vaddr)
381{
382 pgd_t *dir;
383 pmd_t *pmdp;
384 pte_t *ptep;
385 unsigned long addr = (unsigned long) vaddr;
386
387 dir = pgd_offset_k(addr);
388 pmdp = pmd_offset(dir, addr);
389 ptep = pte_offset_kernel(pmdp, addr);
390 *ptep = pte_mkcache(*ptep);
391}
392
393#define PTE_FILE_MAX_BITS 21
394#define PTE_FILE_SHIFT 11
395
396static inline unsigned long pte_to_pgoff(pte_t pte)
397{
398 return pte_val(pte) >> PTE_FILE_SHIFT;
399}
400
401static inline pte_t pgoff_to_pte(unsigned pgoff)
402{
403 return __pte((pgoff << PTE_FILE_SHIFT) + CF_PAGE_FILE);
404}
405
406/*
407 * Encode and de-code a swap entry (must be !pte_none(e) && !pte_present(e))
408 */
409#define __swp_type(x) ((x).val & 0xFF)
410#define __swp_offset(x) ((x).val >> PTE_FILE_SHIFT)
411#define __swp_entry(typ, off) ((swp_entry_t) { (typ) | \
412 (off << PTE_FILE_SHIFT) })
413#define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) })
414#define __swp_entry_to_pte(x) (__pte((x).val))
415
416#define pmd_page(pmd) (pfn_to_page(pmd_val(pmd) >> PAGE_SHIFT))
417
418#define pte_offset_map(pmdp, addr) ((pte_t *)__pmd_page(*pmdp) + \
419 __pte_offset(addr))
420#define pte_unmap(pte) ((void) 0)
421#define pfn_pte(pfn, prot) __pte(((pfn) << PAGE_SHIFT) | pgprot_val(prot))
422#define pte_pfn(pte) (pte_val(pte) >> PAGE_SHIFT)
423
424#endif /* !__ASSEMBLY__ */
425#endif /* _MCF_PGTABLE_H */
diff --git a/arch/m68k/include/asm/mcfmmu.h b/arch/m68k/include/asm/mcfmmu.h
new file mode 100644
index 000000000000..26cc3d5a63f8
--- /dev/null
+++ b/arch/m68k/include/asm/mcfmmu.h
@@ -0,0 +1,112 @@
1/*
2 * mcfmmu.h -- definitions for the ColdFire v4e MMU
3 *
4 * (C) Copyright 2011, Greg Ungerer <gerg@uclinux.org>
5 *
6 * This file is subject to the terms and conditions of the GNU General Public
7 * License. See the file COPYING in the main directory of this archive
8 * for more details.
9 */
10
11#ifndef MCFMMU_H
12#define MCFMMU_H
13
14/*
15 * The MMU support registers are mapped into the address space using
16 * the processor MMUBASE register. We used a fixed address for mapping,
17 * there doesn't seem any need to make this configurable yet.
18 */
19#define MMUBASE 0xfe000000
20
21/*
22 * The support registers of the MMU. Names are the sames as those
23 * used in the Freescale v4e documentation.
24 */
25#define MMUCR (MMUBASE + 0x00) /* Control register */
26#define MMUOR (MMUBASE + 0x04) /* Operation register */
27#define MMUSR (MMUBASE + 0x08) /* Status register */
28#define MMUAR (MMUBASE + 0x10) /* TLB Address register */
29#define MMUTR (MMUBASE + 0x14) /* TLB Tag register */
30#define MMUDR (MMUBASE + 0x18) /* TLB Data register */
31
32/*
33 * MMU Control register bit flags
34 */
35#define MMUCR_EN 0x00000001 /* Virtual mode enable */
36#define MMUCR_ASM 0x00000002 /* Address space mode */
37
38/*
39 * MMU Operation register.
40 */
41#define MMUOR_UAA 0x00000001 /* Update allocatiom address */
42#define MMUOR_ACC 0x00000002 /* TLB access */
43#define MMUOR_RD 0x00000004 /* TLB access read */
44#define MMUOR_WR 0x00000000 /* TLB access write */
45#define MMUOR_ADR 0x00000008 /* TLB address select */
46#define MMUOR_ITLB 0x00000010 /* ITLB operation */
47#define MMUOR_CAS 0x00000020 /* Clear non-locked ASID TLBs */
48#define MMUOR_CNL 0x00000040 /* Clear non-locked TLBs */
49#define MMUOR_CA 0x00000080 /* Clear all TLBs */
50#define MMUOR_STLB 0x00000100 /* Search TLBs */
51#define MMUOR_AAN 16 /* TLB allocation address */
52#define MMUOR_AAMASK 0xffff0000 /* AA mask */
53
54/*
55 * MMU Status register.
56 */
57#define MMUSR_HIT 0x00000002 /* Search TLB hit */
58#define MMUSR_WF 0x00000008 /* Write access fault */
59#define MMUSR_RF 0x00000010 /* Read access fault */
60#define MMUSR_SPF 0x00000020 /* Supervisor protect fault */
61
62/*
63 * MMU Read/Write Tag register.
64 */
65#define MMUTR_V 0x00000001 /* Valid */
66#define MMUTR_SG 0x00000002 /* Shared global */
67#define MMUTR_IDN 2 /* Address Space ID */
68#define MMUTR_IDMASK 0x000003fc /* ASID mask */
69#define MMUTR_VAN 10 /* Virtual Address */
70#define MMUTR_VAMASK 0xfffffc00 /* VA mask */
71
72/*
73 * MMU Read/Write Data register.
74 */
75#define MMUDR_LK 0x00000002 /* Lock entry */
76#define MMUDR_X 0x00000004 /* Execute access enable */
77#define MMUDR_W 0x00000008 /* Write access enable */
78#define MMUDR_R 0x00000010 /* Read access enable */
79#define MMUDR_SP 0x00000020 /* Supervisor access enable */
80#define MMUDR_CM_CWT 0x00000000 /* Cachable write thru */
81#define MMUDR_CM_CCB 0x00000040 /* Cachable copy back */
82#define MMUDR_CM_NCP 0x00000080 /* Non-cachable precise */
83#define MMUDR_CM_NCI 0x000000c0 /* Non-cachable imprecise */
84#define MMUDR_SZ_1MB 0x00000000 /* 1MB page size */
85#define MMUDR_SZ_4KB 0x00000100 /* 4kB page size */
86#define MMUDR_SZ_8KB 0x00000200 /* 8kB page size */
87#define MMUDR_SZ_1KB 0x00000300 /* 1kB page size */
88#define MMUDR_PAN 10 /* Physical address */
89#define MMUDR_PAMASK 0xfffffc00 /* PA mask */
90
91#ifndef __ASSEMBLY__
92
93/*
94 * Simple access functions for the MMU registers. Nothing fancy
95 * currently required, just simple 32bit access.
96 */
97static inline u32 mmu_read(u32 a)
98{
99 return *((volatile u32 *) a);
100}
101
102static inline void mmu_write(u32 a, u32 v)
103{
104 *((volatile u32 *) a) = v;
105 __asm__ __volatile__ ("nop");
106}
107
108int cf_tlb_miss(struct pt_regs *regs, int write, int dtlb, int extension_word);
109
110#endif
111
112#endif /* MCFMMU_H */
diff --git a/arch/m68k/include/asm/mmu_context.h b/arch/m68k/include/asm/mmu_context.h
index 7d4341e55a99..dc3be991d634 100644
--- a/arch/m68k/include/asm/mmu_context.h
+++ b/arch/m68k/include/asm/mmu_context.h
@@ -8,7 +8,206 @@ static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk)
8} 8}
9 9
10#ifdef CONFIG_MMU 10#ifdef CONFIG_MMU
11#ifndef CONFIG_SUN3 11
12#if defined(CONFIG_COLDFIRE)
13
14#include <asm/atomic.h>
15#include <asm/bitops.h>
16#include <asm/mcfmmu.h>
17#include <asm/mmu.h>
18
19#define NO_CONTEXT 256
20#define LAST_CONTEXT 255
21#define FIRST_CONTEXT 1
22
23extern unsigned long context_map[];
24extern mm_context_t next_mmu_context;
25
26extern atomic_t nr_free_contexts;
27extern struct mm_struct *context_mm[LAST_CONTEXT+1];
28extern void steal_context(void);
29
30static inline void get_mmu_context(struct mm_struct *mm)
31{
32 mm_context_t ctx;
33
34 if (mm->context != NO_CONTEXT)
35 return;
36 while (atomic_dec_and_test_lt(&nr_free_contexts)) {
37 atomic_inc(&nr_free_contexts);
38 steal_context();
39 }
40 ctx = next_mmu_context;
41 while (test_and_set_bit(ctx, context_map)) {
42 ctx = find_next_zero_bit(context_map, LAST_CONTEXT+1, ctx);
43 if (ctx > LAST_CONTEXT)
44 ctx = 0;
45 }
46 next_mmu_context = (ctx + 1) & LAST_CONTEXT;
47 mm->context = ctx;
48 context_mm[ctx] = mm;
49}
50
51/*
52 * Set up the context for a new address space.
53 */
54#define init_new_context(tsk, mm) (((mm)->context = NO_CONTEXT), 0)
55
56/*
57 * We're finished using the context for an address space.
58 */
59static inline void destroy_context(struct mm_struct *mm)
60{
61 if (mm->context != NO_CONTEXT) {
62 clear_bit(mm->context, context_map);
63 mm->context = NO_CONTEXT;
64 atomic_inc(&nr_free_contexts);
65 }
66}
67
68static inline void set_context(mm_context_t context, pgd_t *pgd)
69{
70 __asm__ __volatile__ ("movec %0,%%asid" : : "d" (context));
71}
72
73static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
74 struct task_struct *tsk)
75{
76 get_mmu_context(tsk->mm);
77 set_context(tsk->mm->context, next->pgd);
78}
79
80/*
81 * After we have set current->mm to a new value, this activates
82 * the context for the new mm so we see the new mappings.
83 */
84static inline void activate_mm(struct mm_struct *active_mm,
85 struct mm_struct *mm)
86{
87 get_mmu_context(mm);
88 set_context(mm->context, mm->pgd);
89}
90
91#define deactivate_mm(tsk, mm) do { } while (0)
92
93extern void mmu_context_init(void);
94#define prepare_arch_switch(next) load_ksp_mmu(next)
95
96static inline void load_ksp_mmu(struct task_struct *task)
97{
98 unsigned long flags;
99 struct mm_struct *mm;
100 int asid;
101 pgd_t *pgd;
102 pmd_t *pmd;
103 pte_t *pte;
104 unsigned long mmuar;
105
106 local_irq_save(flags);
107 mmuar = task->thread.ksp;
108
109 /* Search for a valid TLB entry, if one is found, don't remap */
110 mmu_write(MMUAR, mmuar);
111 mmu_write(MMUOR, MMUOR_STLB | MMUOR_ADR);
112 if (mmu_read(MMUSR) & MMUSR_HIT)
113 goto end;
114
115 if (mmuar >= PAGE_OFFSET) {
116 mm = &init_mm;
117 } else {
118 pr_info("load_ksp_mmu: non-kernel mm found: 0x%p\n", task->mm);
119 mm = task->mm;
120 }
121
122 if (!mm)
123 goto bug;
124
125 pgd = pgd_offset(mm, mmuar);
126 if (pgd_none(*pgd))
127 goto bug;
128
129 pmd = pmd_offset(pgd, mmuar);
130 if (pmd_none(*pmd))
131 goto bug;
132
133 pte = (mmuar >= PAGE_OFFSET) ? pte_offset_kernel(pmd, mmuar)
134 : pte_offset_map(pmd, mmuar);
135 if (pte_none(*pte) || !pte_present(*pte))
136 goto bug;
137
138 set_pte(pte, pte_mkyoung(*pte));
139 asid = mm->context & 0xff;
140 if (!pte_dirty(*pte) && mmuar <= PAGE_OFFSET)
141 set_pte(pte, pte_wrprotect(*pte));
142
143 mmu_write(MMUTR, (mmuar & PAGE_MASK) | (asid << MMUTR_IDN) |
144 (((int)(pte->pte) & (int)CF_PAGE_MMUTR_MASK)
145 >> CF_PAGE_MMUTR_SHIFT) | MMUTR_V);
146
147 mmu_write(MMUDR, (pte_val(*pte) & PAGE_MASK) |
148 ((pte->pte) & CF_PAGE_MMUDR_MASK) | MMUDR_SZ_8KB | MMUDR_X);
149
150 mmu_write(MMUOR, MMUOR_ACC | MMUOR_UAA);
151
152 goto end;
153
154bug:
155 pr_info("ksp load failed: mm=0x%p ksp=0x08%lx\n", mm, mmuar);
156end:
157 local_irq_restore(flags);
158}
159
160#elif defined(CONFIG_SUN3)
161#include <asm/sun3mmu.h>
162#include <linux/sched.h>
163
164extern unsigned long get_free_context(struct mm_struct *mm);
165extern void clear_context(unsigned long context);
166
167/* set the context for a new task to unmapped */
168static inline int init_new_context(struct task_struct *tsk,
169 struct mm_struct *mm)
170{
171 mm->context = SUN3_INVALID_CONTEXT;
172 return 0;
173}
174
175/* find the context given to this process, and if it hasn't already
176 got one, go get one for it. */
177static inline void get_mmu_context(struct mm_struct *mm)
178{
179 if (mm->context == SUN3_INVALID_CONTEXT)
180 mm->context = get_free_context(mm);
181}
182
183/* flush context if allocated... */
184static inline void destroy_context(struct mm_struct *mm)
185{
186 if (mm->context != SUN3_INVALID_CONTEXT)
187 clear_context(mm->context);
188}
189
190static inline void activate_context(struct mm_struct *mm)
191{
192 get_mmu_context(mm);
193 sun3_put_context(mm->context);
194}
195
196static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
197 struct task_struct *tsk)
198{
199 activate_context(tsk->mm);
200}
201
202#define deactivate_mm(tsk, mm) do { } while (0)
203
204static inline void activate_mm(struct mm_struct *prev_mm,
205 struct mm_struct *next_mm)
206{
207 activate_context(next_mm);
208}
209
210#else
12 211
13#include <asm/setup.h> 212#include <asm/setup.h>
14#include <asm/page.h> 213#include <asm/page.h>
@@ -103,55 +302,8 @@ static inline void activate_mm(struct mm_struct *prev_mm,
103 switch_mm_0460(next_mm); 302 switch_mm_0460(next_mm);
104} 303}
105 304
106#else /* CONFIG_SUN3 */
107#include <asm/sun3mmu.h>
108#include <linux/sched.h>
109
110extern unsigned long get_free_context(struct mm_struct *mm);
111extern void clear_context(unsigned long context);
112
113/* set the context for a new task to unmapped */
114static inline int init_new_context(struct task_struct *tsk, struct mm_struct *mm)
115{
116 mm->context = SUN3_INVALID_CONTEXT;
117 return 0;
118}
119
120/* find the context given to this process, and if it hasn't already
121 got one, go get one for it. */
122static inline void get_mmu_context(struct mm_struct *mm)
123{
124 if(mm->context == SUN3_INVALID_CONTEXT)
125 mm->context = get_free_context(mm);
126}
127
128/* flush context if allocated... */
129static inline void destroy_context(struct mm_struct *mm)
130{
131 if(mm->context != SUN3_INVALID_CONTEXT)
132 clear_context(mm->context);
133}
134
135static inline void activate_context(struct mm_struct *mm)
136{
137 get_mmu_context(mm);
138 sun3_put_context(mm->context);
139}
140
141static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next, struct task_struct *tsk)
142{
143 activate_context(tsk->mm);
144}
145
146#define deactivate_mm(tsk,mm) do { } while (0)
147
148static inline void activate_mm(struct mm_struct *prev_mm,
149 struct mm_struct *next_mm)
150{
151 activate_context(next_mm);
152}
153
154#endif 305#endif
306
155#else /* !CONFIG_MMU */ 307#else /* !CONFIG_MMU */
156 308
157static inline int init_new_context(struct task_struct *tsk, struct mm_struct *mm) 309static inline int init_new_context(struct task_struct *tsk, struct mm_struct *mm)
diff --git a/arch/m68k/include/asm/motorola_pgtable.h b/arch/m68k/include/asm/motorola_pgtable.h
index 45bd3f589bf0..e0fdd4d08075 100644
--- a/arch/m68k/include/asm/motorola_pgtable.h
+++ b/arch/m68k/include/asm/motorola_pgtable.h
@@ -8,6 +8,7 @@
8#define _PAGE_PRESENT 0x001 8#define _PAGE_PRESENT 0x001
9#define _PAGE_SHORT 0x002 9#define _PAGE_SHORT 0x002
10#define _PAGE_RONLY 0x004 10#define _PAGE_RONLY 0x004
11#define _PAGE_READWRITE 0x000
11#define _PAGE_ACCESSED 0x008 12#define _PAGE_ACCESSED 0x008
12#define _PAGE_DIRTY 0x010 13#define _PAGE_DIRTY 0x010
13#define _PAGE_SUPER 0x080 /* 68040 supervisor only */ 14#define _PAGE_SUPER 0x080 /* 68040 supervisor only */
diff --git a/arch/m68k/include/asm/page.h b/arch/m68k/include/asm/page.h
index dfebb7c1e379..98baa82a8615 100644
--- a/arch/m68k/include/asm/page.h
+++ b/arch/m68k/include/asm/page.h
@@ -6,10 +6,10 @@
6#include <asm/page_offset.h> 6#include <asm/page_offset.h>
7 7
8/* PAGE_SHIFT determines the page size */ 8/* PAGE_SHIFT determines the page size */
9#ifndef CONFIG_SUN3 9#if defined(CONFIG_SUN3) || defined(CONFIG_COLDFIRE)
10#define PAGE_SHIFT (12) 10#define PAGE_SHIFT 13
11#else 11#else
12#define PAGE_SHIFT (13) 12#define PAGE_SHIFT 12
13#endif 13#endif
14#define PAGE_SIZE (_AC(1, UL) << PAGE_SHIFT) 14#define PAGE_SIZE (_AC(1, UL) << PAGE_SHIFT)
15#define PAGE_MASK (~(PAGE_SIZE-1)) 15#define PAGE_MASK (~(PAGE_SIZE-1))
@@ -36,6 +36,10 @@ typedef struct page *pgtable_t;
36#define __pgd(x) ((pgd_t) { (x) } ) 36#define __pgd(x) ((pgd_t) { (x) } )
37#define __pgprot(x) ((pgprot_t) { (x) } ) 37#define __pgprot(x) ((pgprot_t) { (x) } )
38 38
39extern unsigned long _rambase;
40extern unsigned long _ramstart;
41extern unsigned long _ramend;
42
39#endif /* !__ASSEMBLY__ */ 43#endif /* !__ASSEMBLY__ */
40 44
41#ifdef CONFIG_MMU 45#ifdef CONFIG_MMU
diff --git a/arch/m68k/include/asm/page_no.h b/arch/m68k/include/asm/page_no.h
index a8d1c60eb9ce..90595721185f 100644
--- a/arch/m68k/include/asm/page_no.h
+++ b/arch/m68k/include/asm/page_no.h
@@ -5,9 +5,6 @@
5 5
6extern unsigned long memory_start; 6extern unsigned long memory_start;
7extern unsigned long memory_end; 7extern unsigned long memory_end;
8extern unsigned long _rambase;
9extern unsigned long _ramstart;
10extern unsigned long _ramend;
11 8
12#define get_user_page(vaddr) __get_free_page(GFP_KERNEL) 9#define get_user_page(vaddr) __get_free_page(GFP_KERNEL)
13#define free_user_page(page, addr) free_page(addr) 10#define free_user_page(page, addr) free_page(addr)
diff --git a/arch/m68k/include/asm/page_offset.h b/arch/m68k/include/asm/page_offset.h
index 1780152d81da..82626a8f1d0a 100644
--- a/arch/m68k/include/asm/page_offset.h
+++ b/arch/m68k/include/asm/page_offset.h
@@ -1,11 +1,9 @@
1/* This handles the memory map.. */ 1/* This handles the memory map.. */
2 2
3#ifdef CONFIG_MMU 3#if defined(CONFIG_RAMBASE)
4#ifndef CONFIG_SUN3 4#define PAGE_OFFSET_RAW CONFIG_RAMBASE
5#define PAGE_OFFSET_RAW 0x00000000 5#elif defined(CONFIG_SUN3)
6#else
7#define PAGE_OFFSET_RAW 0x0E000000 6#define PAGE_OFFSET_RAW 0x0E000000
8#endif
9#else 7#else
10#define PAGE_OFFSET_RAW CONFIG_RAMBASE 8#define PAGE_OFFSET_RAW 0x00000000
11#endif 9#endif
diff --git a/arch/m68k/include/asm/pgalloc.h b/arch/m68k/include/asm/pgalloc.h
index c294aad8a900..37bee7e3223d 100644
--- a/arch/m68k/include/asm/pgalloc.h
+++ b/arch/m68k/include/asm/pgalloc.h
@@ -7,7 +7,9 @@
7 7
8#ifdef CONFIG_MMU 8#ifdef CONFIG_MMU
9#include <asm/virtconvert.h> 9#include <asm/virtconvert.h>
10#ifdef CONFIG_SUN3 10#if defined(CONFIG_COLDFIRE)
11#include <asm/mcf_pgalloc.h>
12#elif defined(CONFIG_SUN3)
11#include <asm/sun3_pgalloc.h> 13#include <asm/sun3_pgalloc.h>
12#else 14#else
13#include <asm/motorola_pgalloc.h> 15#include <asm/motorola_pgalloc.h>
diff --git a/arch/m68k/include/asm/pgtable_mm.h b/arch/m68k/include/asm/pgtable_mm.h
index 87174c904d2b..dc35e0e106e4 100644
--- a/arch/m68k/include/asm/pgtable_mm.h
+++ b/arch/m68k/include/asm/pgtable_mm.h
@@ -40,6 +40,8 @@
40/* PGDIR_SHIFT determines what a third-level page table entry can map */ 40/* PGDIR_SHIFT determines what a third-level page table entry can map */
41#ifdef CONFIG_SUN3 41#ifdef CONFIG_SUN3
42#define PGDIR_SHIFT 17 42#define PGDIR_SHIFT 17
43#elif defined(CONFIG_COLDFIRE)
44#define PGDIR_SHIFT 22
43#else 45#else
44#define PGDIR_SHIFT 25 46#define PGDIR_SHIFT 25
45#endif 47#endif
@@ -54,6 +56,10 @@
54#define PTRS_PER_PTE 16 56#define PTRS_PER_PTE 16
55#define PTRS_PER_PMD 1 57#define PTRS_PER_PMD 1
56#define PTRS_PER_PGD 2048 58#define PTRS_PER_PGD 2048
59#elif defined(CONFIG_COLDFIRE)
60#define PTRS_PER_PTE 512
61#define PTRS_PER_PMD 1
62#define PTRS_PER_PGD 1024
57#else 63#else
58#define PTRS_PER_PTE 1024 64#define PTRS_PER_PTE 1024
59#define PTRS_PER_PMD 8 65#define PTRS_PER_PMD 8
@@ -66,12 +72,22 @@
66#ifdef CONFIG_SUN3 72#ifdef CONFIG_SUN3
67#define KMAP_START 0x0DC00000 73#define KMAP_START 0x0DC00000
68#define KMAP_END 0x0E000000 74#define KMAP_END 0x0E000000
75#elif defined(CONFIG_COLDFIRE)
76#define KMAP_START 0xe0000000
77#define KMAP_END 0xf0000000
69#else 78#else
70#define KMAP_START 0xd0000000 79#define KMAP_START 0xd0000000
71#define KMAP_END 0xf0000000 80#define KMAP_END 0xf0000000
72#endif 81#endif
73 82
74#ifndef CONFIG_SUN3 83#ifdef CONFIG_SUN3
84extern unsigned long m68k_vmalloc_end;
85#define VMALLOC_START 0x0f800000
86#define VMALLOC_END m68k_vmalloc_end
87#elif defined(CONFIG_COLDFIRE)
88#define VMALLOC_START 0xd0000000
89#define VMALLOC_END 0xe0000000
90#else
75/* Just any arbitrary offset to the start of the vmalloc VM area: the 91/* Just any arbitrary offset to the start of the vmalloc VM area: the
76 * current 8MB value just means that there will be a 8MB "hole" after the 92 * current 8MB value just means that there will be a 8MB "hole" after the
77 * physical memory until the kernel virtual memory starts. That means that 93 * physical memory until the kernel virtual memory starts. That means that
@@ -82,11 +98,7 @@
82#define VMALLOC_OFFSET (8*1024*1024) 98#define VMALLOC_OFFSET (8*1024*1024)
83#define VMALLOC_START (((unsigned long) high_memory + VMALLOC_OFFSET) & ~(VMALLOC_OFFSET-1)) 99#define VMALLOC_START (((unsigned long) high_memory + VMALLOC_OFFSET) & ~(VMALLOC_OFFSET-1))
84#define VMALLOC_END KMAP_START 100#define VMALLOC_END KMAP_START
85#else 101#endif
86extern unsigned long m68k_vmalloc_end;
87#define VMALLOC_START 0x0f800000
88#define VMALLOC_END m68k_vmalloc_end
89#endif /* CONFIG_SUN3 */
90 102
91/* zero page used for uninitialized stuff */ 103/* zero page used for uninitialized stuff */
92extern void *empty_zero_page; 104extern void *empty_zero_page;
@@ -130,6 +142,8 @@ static inline void update_mmu_cache(struct vm_area_struct *vma,
130 142
131#ifdef CONFIG_SUN3 143#ifdef CONFIG_SUN3
132#include <asm/sun3_pgtable.h> 144#include <asm/sun3_pgtable.h>
145#elif defined(CONFIG_COLDFIRE)
146#include <asm/mcf_pgtable.h>
133#else 147#else
134#include <asm/motorola_pgtable.h> 148#include <asm/motorola_pgtable.h>
135#endif 149#endif
@@ -138,6 +152,9 @@ static inline void update_mmu_cache(struct vm_area_struct *vma,
138/* 152/*
139 * Macro to mark a page protection value as "uncacheable". 153 * Macro to mark a page protection value as "uncacheable".
140 */ 154 */
155#ifdef CONFIG_COLDFIRE
156# define pgprot_noncached(prot) (__pgprot(pgprot_val(prot) | CF_PAGE_NOCACHE))
157#else
141#ifdef SUN3_PAGE_NOCACHE 158#ifdef SUN3_PAGE_NOCACHE
142# define __SUN3_PAGE_NOCACHE SUN3_PAGE_NOCACHE 159# define __SUN3_PAGE_NOCACHE SUN3_PAGE_NOCACHE
143#else 160#else
@@ -152,6 +169,7 @@ static inline void update_mmu_cache(struct vm_area_struct *vma,
152 ? (__pgprot((pgprot_val(prot) & _CACHEMASK040) | _PAGE_NOCACHE_S)) \ 169 ? (__pgprot((pgprot_val(prot) & _CACHEMASK040) | _PAGE_NOCACHE_S)) \
153 : (prot))) 170 : (prot)))
154 171
172#endif /* CONFIG_COLDFIRE */
155#include <asm-generic/pgtable.h> 173#include <asm-generic/pgtable.h>
156#endif /* !__ASSEMBLY__ */ 174#endif /* !__ASSEMBLY__ */
157 175
diff --git a/arch/m68k/include/asm/processor.h b/arch/m68k/include/asm/processor.h
index 568facf30276..46460fa15d5c 100644
--- a/arch/m68k/include/asm/processor.h
+++ b/arch/m68k/include/asm/processor.h
@@ -48,10 +48,12 @@ static inline void wrusp(unsigned long usp)
48 * so don't change it unless you know what you are doing. 48 * so don't change it unless you know what you are doing.
49 */ 49 */
50#ifdef CONFIG_MMU 50#ifdef CONFIG_MMU
51#ifndef CONFIG_SUN3 51#if defined(CONFIG_COLDFIRE)
52#define TASK_SIZE (0xF0000000UL) 52#define TASK_SIZE (0xC0000000UL)
53#else 53#elif defined(CONFIG_SUN3)
54#define TASK_SIZE (0x0E000000UL) 54#define TASK_SIZE (0x0E000000UL)
55#else
56#define TASK_SIZE (0xF0000000UL)
55#endif 57#endif
56#else 58#else
57#define TASK_SIZE (0xFFFFFFFFUL) 59#define TASK_SIZE (0xFFFFFFFFUL)
@@ -66,10 +68,12 @@ static inline void wrusp(unsigned long usp)
66 * space during mmap's. 68 * space during mmap's.
67 */ 69 */
68#ifdef CONFIG_MMU 70#ifdef CONFIG_MMU
69#ifndef CONFIG_SUN3 71#if defined(CONFIG_COLDFIRE)
70#define TASK_UNMAPPED_BASE 0xC0000000UL 72#define TASK_UNMAPPED_BASE 0x60000000UL
71#else 73#elif defined(CONFIG_SUN3)
72#define TASK_UNMAPPED_BASE 0x0A000000UL 74#define TASK_UNMAPPED_BASE 0x0A000000UL
75#else
76#define TASK_UNMAPPED_BASE 0xC0000000UL
73#endif 77#endif
74#define TASK_UNMAPPED_ALIGN(addr, off) PAGE_ALIGN(addr) 78#define TASK_UNMAPPED_ALIGN(addr, off) PAGE_ALIGN(addr)
75#else 79#else
@@ -88,14 +92,12 @@ struct thread_struct {
88 unsigned long fp[8*3]; 92 unsigned long fp[8*3];
89 unsigned long fpcntl[3]; /* fp control regs */ 93 unsigned long fpcntl[3]; /* fp control regs */
90 unsigned char fpstate[FPSTATESIZE]; /* floating point state */ 94 unsigned char fpstate[FPSTATESIZE]; /* floating point state */
91 struct thread_info info;
92}; 95};
93 96
94#define INIT_THREAD { \ 97#define INIT_THREAD { \
95 .ksp = sizeof(init_stack) + (unsigned long) init_stack, \ 98 .ksp = sizeof(init_stack) + (unsigned long) init_stack, \
96 .sr = PS_S, \ 99 .sr = PS_S, \
97 .fs = __KERNEL_DS, \ 100 .fs = __KERNEL_DS, \
98 .info = INIT_THREAD_INFO(init_task), \
99} 101}
100 102
101#ifdef CONFIG_MMU 103#ifdef CONFIG_MMU
diff --git a/arch/m68k/include/asm/segment.h b/arch/m68k/include/asm/segment.h
index ee959219fdfe..0fa80e97ed2d 100644
--- a/arch/m68k/include/asm/segment.h
+++ b/arch/m68k/include/asm/segment.h
@@ -22,23 +22,26 @@ typedef struct {
22} mm_segment_t; 22} mm_segment_t;
23 23
24#define MAKE_MM_SEG(s) ((mm_segment_t) { (s) }) 24#define MAKE_MM_SEG(s) ((mm_segment_t) { (s) })
25#define USER_DS MAKE_MM_SEG(__USER_DS)
26#define KERNEL_DS MAKE_MM_SEG(__KERNEL_DS)
27 25
26#ifdef CONFIG_CPU_HAS_ADDRESS_SPACES
28/* 27/*
29 * Get/set the SFC/DFC registers for MOVES instructions 28 * Get/set the SFC/DFC registers for MOVES instructions
30 */ 29 */
30#define USER_DS MAKE_MM_SEG(__USER_DS)
31#define KERNEL_DS MAKE_MM_SEG(__KERNEL_DS)
31 32
32static inline mm_segment_t get_fs(void) 33static inline mm_segment_t get_fs(void)
33{ 34{
34#ifdef CONFIG_MMU
35 mm_segment_t _v; 35 mm_segment_t _v;
36 __asm__ ("movec %/dfc,%0":"=r" (_v.seg):); 36 __asm__ ("movec %/dfc,%0":"=r" (_v.seg):);
37
38 return _v; 37 return _v;
39#else 38}
40 return USER_DS; 39
41#endif 40static inline void set_fs(mm_segment_t val)
41{
42 __asm__ __volatile__ ("movec %0,%/sfc\n\t"
43 "movec %0,%/dfc\n\t"
44 : /* no outputs */ : "r" (val.seg) : "memory");
42} 45}
43 46
44static inline mm_segment_t get_ds(void) 47static inline mm_segment_t get_ds(void)
@@ -47,14 +50,13 @@ static inline mm_segment_t get_ds(void)
47 return KERNEL_DS; 50 return KERNEL_DS;
48} 51}
49 52
50static inline void set_fs(mm_segment_t val) 53#else
51{ 54#define USER_DS MAKE_MM_SEG(TASK_SIZE)
52#ifdef CONFIG_MMU 55#define KERNEL_DS MAKE_MM_SEG(0xFFFFFFFF)
53 __asm__ __volatile__ ("movec %0,%/sfc\n\t" 56#define get_ds() (KERNEL_DS)
54 "movec %0,%/dfc\n\t" 57#define get_fs() (current_thread_info()->addr_limit)
55 : /* no outputs */ : "r" (val.seg) : "memory"); 58#define set_fs(x) (current_thread_info()->addr_limit = (x))
56#endif 59#endif
57}
58 60
59#define segment_eq(a,b) ((a).seg == (b).seg) 61#define segment_eq(a,b) ((a).seg == (b).seg)
60 62
diff --git a/arch/m68k/include/asm/setup.h b/arch/m68k/include/asm/setup.h
index 4dfb3952b375..00c2c5397d37 100644
--- a/arch/m68k/include/asm/setup.h
+++ b/arch/m68k/include/asm/setup.h
@@ -40,6 +40,7 @@
40#define MACH_HP300 9 40#define MACH_HP300 9
41#define MACH_Q40 10 41#define MACH_Q40 10
42#define MACH_SUN3X 11 42#define MACH_SUN3X 11
43#define MACH_M54XX 12
43 44
44#define COMMAND_LINE_SIZE 256 45#define COMMAND_LINE_SIZE 256
45 46
@@ -211,23 +212,27 @@ extern unsigned long m68k_machtype;
211#define CPUB_68030 1 212#define CPUB_68030 1
212#define CPUB_68040 2 213#define CPUB_68040 2
213#define CPUB_68060 3 214#define CPUB_68060 3
215#define CPUB_COLDFIRE 4
214 216
215#define CPU_68020 (1<<CPUB_68020) 217#define CPU_68020 (1<<CPUB_68020)
216#define CPU_68030 (1<<CPUB_68030) 218#define CPU_68030 (1<<CPUB_68030)
217#define CPU_68040 (1<<CPUB_68040) 219#define CPU_68040 (1<<CPUB_68040)
218#define CPU_68060 (1<<CPUB_68060) 220#define CPU_68060 (1<<CPUB_68060)
221#define CPU_COLDFIRE (1<<CPUB_COLDFIRE)
219 222
220#define FPUB_68881 0 223#define FPUB_68881 0
221#define FPUB_68882 1 224#define FPUB_68882 1
222#define FPUB_68040 2 /* Internal FPU */ 225#define FPUB_68040 2 /* Internal FPU */
223#define FPUB_68060 3 /* Internal FPU */ 226#define FPUB_68060 3 /* Internal FPU */
224#define FPUB_SUNFPA 4 /* Sun-3 FPA */ 227#define FPUB_SUNFPA 4 /* Sun-3 FPA */
228#define FPUB_COLDFIRE 5 /* ColdFire FPU */
225 229
226#define FPU_68881 (1<<FPUB_68881) 230#define FPU_68881 (1<<FPUB_68881)
227#define FPU_68882 (1<<FPUB_68882) 231#define FPU_68882 (1<<FPUB_68882)
228#define FPU_68040 (1<<FPUB_68040) 232#define FPU_68040 (1<<FPUB_68040)
229#define FPU_68060 (1<<FPUB_68060) 233#define FPU_68060 (1<<FPUB_68060)
230#define FPU_SUNFPA (1<<FPUB_SUNFPA) 234#define FPU_SUNFPA (1<<FPUB_SUNFPA)
235#define FPU_COLDFIRE (1<<FPUB_COLDFIRE)
231 236
232#define MMUB_68851 0 237#define MMUB_68851 0
233#define MMUB_68030 1 /* Internal MMU */ 238#define MMUB_68030 1 /* Internal MMU */
@@ -235,6 +240,7 @@ extern unsigned long m68k_machtype;
235#define MMUB_68060 3 /* Internal MMU */ 240#define MMUB_68060 3 /* Internal MMU */
236#define MMUB_APOLLO 4 /* Custom Apollo */ 241#define MMUB_APOLLO 4 /* Custom Apollo */
237#define MMUB_SUN3 5 /* Custom Sun-3 */ 242#define MMUB_SUN3 5 /* Custom Sun-3 */
243#define MMUB_COLDFIRE 6 /* Internal MMU */
238 244
239#define MMU_68851 (1<<MMUB_68851) 245#define MMU_68851 (1<<MMUB_68851)
240#define MMU_68030 (1<<MMUB_68030) 246#define MMU_68030 (1<<MMUB_68030)
@@ -242,6 +248,7 @@ extern unsigned long m68k_machtype;
242#define MMU_68060 (1<<MMUB_68060) 248#define MMU_68060 (1<<MMUB_68060)
243#define MMU_SUN3 (1<<MMUB_SUN3) 249#define MMU_SUN3 (1<<MMUB_SUN3)
244#define MMU_APOLLO (1<<MMUB_APOLLO) 250#define MMU_APOLLO (1<<MMUB_APOLLO)
251#define MMU_COLDFIRE (1<<MMUB_COLDFIRE)
245 252
246#ifdef __KERNEL__ 253#ifdef __KERNEL__
247 254
@@ -341,6 +348,13 @@ extern int m68k_is040or060;
341# endif 348# endif
342#endif 349#endif
343 350
351#if !defined(CONFIG_COLDFIRE)
352# define CPU_IS_COLDFIRE (0)
353#else
354# define CPU_IS_COLDFIRE (1)
355# define MMU_IS_COLDFIRE (1)
356#endif
357
344#define CPU_TYPE (m68k_cputype) 358#define CPU_TYPE (m68k_cputype)
345 359
346#ifdef CONFIG_M68KFPU_EMU 360#ifdef CONFIG_M68KFPU_EMU
diff --git a/arch/m68k/include/asm/sigcontext.h b/arch/m68k/include/asm/sigcontext.h
index a29dd74a17cb..523db2a51cf3 100644
--- a/arch/m68k/include/asm/sigcontext.h
+++ b/arch/m68k/include/asm/sigcontext.h
@@ -15,11 +15,7 @@ struct sigcontext {
15 unsigned long sc_pc; 15 unsigned long sc_pc;
16 unsigned short sc_formatvec; 16 unsigned short sc_formatvec;
17#ifndef __uClinux__ 17#ifndef __uClinux__
18# ifdef __mcoldfire__
19 unsigned long sc_fpregs[2][2]; /* room for two fp registers */
20# else
21 unsigned long sc_fpregs[2*3]; /* room for two fp registers */ 18 unsigned long sc_fpregs[2*3]; /* room for two fp registers */
22# endif
23 unsigned long sc_fpcntl[3]; 19 unsigned long sc_fpcntl[3];
24 unsigned char sc_fpstate[216]; 20 unsigned char sc_fpstate[216];
25#endif 21#endif
diff --git a/arch/m68k/include/asm/thread_info.h b/arch/m68k/include/asm/thread_info.h
index 790988967ba7..29fa6da4f17c 100644
--- a/arch/m68k/include/asm/thread_info.h
+++ b/arch/m68k/include/asm/thread_info.h
@@ -3,6 +3,7 @@
3 3
4#include <asm/types.h> 4#include <asm/types.h>
5#include <asm/page.h> 5#include <asm/page.h>
6#include <asm/segment.h>
6 7
7/* 8/*
8 * On machines with 4k pages we default to an 8k thread size, though we 9 * On machines with 4k pages we default to an 8k thread size, though we
@@ -26,6 +27,7 @@ struct thread_info {
26 struct task_struct *task; /* main task structure */ 27 struct task_struct *task; /* main task structure */
27 unsigned long flags; 28 unsigned long flags;
28 struct exec_domain *exec_domain; /* execution domain */ 29 struct exec_domain *exec_domain; /* execution domain */
30 mm_segment_t addr_limit; /* thread address space */
29 int preempt_count; /* 0 => preemptable, <0 => BUG */ 31 int preempt_count; /* 0 => preemptable, <0 => BUG */
30 __u32 cpu; /* should always be 0 on m68k */ 32 __u32 cpu; /* should always be 0 on m68k */
31 unsigned long tp_value; /* thread pointer */ 33 unsigned long tp_value; /* thread pointer */
@@ -39,6 +41,7 @@ struct thread_info {
39{ \ 41{ \
40 .task = &tsk, \ 42 .task = &tsk, \
41 .exec_domain = &default_exec_domain, \ 43 .exec_domain = &default_exec_domain, \
44 .addr_limit = KERNEL_DS, \
42 .preempt_count = INIT_PREEMPT_COUNT, \ 45 .preempt_count = INIT_PREEMPT_COUNT, \
43 .restart_block = { \ 46 .restart_block = { \
44 .fn = do_no_restart_syscall, \ 47 .fn = do_no_restart_syscall, \
@@ -47,34 +50,6 @@ struct thread_info {
47 50
48#define init_stack (init_thread_union.stack) 51#define init_stack (init_thread_union.stack)
49 52
50#ifdef CONFIG_MMU
51
52#ifndef __ASSEMBLY__
53#include <asm/current.h>
54#endif
55
56#ifdef ASM_OFFSETS_C
57#define task_thread_info(tsk) ((struct thread_info *) NULL)
58#else
59#include <asm/asm-offsets.h>
60#define task_thread_info(tsk) ((struct thread_info *)((char *)tsk+TASK_TINFO))
61#endif
62
63#define init_thread_info (init_task.thread.info)
64#define task_stack_page(tsk) ((tsk)->stack)
65#define current_thread_info() task_thread_info(current)
66
67#define __HAVE_THREAD_FUNCTIONS
68
69#define setup_thread_stack(p, org) ({ \
70 *(struct task_struct **)(p)->stack = (p); \
71 task_thread_info(p)->task = (p); \
72})
73
74#define end_of_stack(p) ((unsigned long *)(p)->stack + 1)
75
76#else /* !CONFIG_MMU */
77
78#ifndef __ASSEMBLY__ 53#ifndef __ASSEMBLY__
79/* how to get the thread information struct from C */ 54/* how to get the thread information struct from C */
80static inline struct thread_info *current_thread_info(void) 55static inline struct thread_info *current_thread_info(void)
@@ -92,8 +67,6 @@ static inline struct thread_info *current_thread_info(void)
92 67
93#define init_thread_info (init_thread_union.thread_info) 68#define init_thread_info (init_thread_union.thread_info)
94 69
95#endif /* CONFIG_MMU */
96
97/* entry.S relies on these definitions! 70/* entry.S relies on these definitions!
98 * bits 0-7 are tested at every exception exit 71 * bits 0-7 are tested at every exception exit
99 * bits 8-15 are also tested at syscall exit 72 * bits 8-15 are also tested at syscall exit
diff --git a/arch/m68k/include/asm/tlbflush.h b/arch/m68k/include/asm/tlbflush.h
index a6b4ed4fc90f..965ea35c9a40 100644
--- a/arch/m68k/include/asm/tlbflush.h
+++ b/arch/m68k/include/asm/tlbflush.h
@@ -5,10 +5,13 @@
5#ifndef CONFIG_SUN3 5#ifndef CONFIG_SUN3
6 6
7#include <asm/current.h> 7#include <asm/current.h>
8#include <asm/mcfmmu.h>
8 9
9static inline void flush_tlb_kernel_page(void *addr) 10static inline void flush_tlb_kernel_page(void *addr)
10{ 11{
11 if (CPU_IS_040_OR_060) { 12 if (CPU_IS_COLDFIRE) {
13 mmu_write(MMUOR, MMUOR_CNL);
14 } else if (CPU_IS_040_OR_060) {
12 mm_segment_t old_fs = get_fs(); 15 mm_segment_t old_fs = get_fs();
13 set_fs(KERNEL_DS); 16 set_fs(KERNEL_DS);
14 __asm__ __volatile__(".chip 68040\n\t" 17 __asm__ __volatile__(".chip 68040\n\t"
@@ -25,12 +28,15 @@ static inline void flush_tlb_kernel_page(void *addr)
25 */ 28 */
26static inline void __flush_tlb(void) 29static inline void __flush_tlb(void)
27{ 30{
28 if (CPU_IS_040_OR_060) 31 if (CPU_IS_COLDFIRE) {
32 mmu_write(MMUOR, MMUOR_CNL);
33 } else if (CPU_IS_040_OR_060) {
29 __asm__ __volatile__(".chip 68040\n\t" 34 __asm__ __volatile__(".chip 68040\n\t"
30 "pflushan\n\t" 35 "pflushan\n\t"
31 ".chip 68k"); 36 ".chip 68k");
32 else if (CPU_IS_020_OR_030) 37 } else if (CPU_IS_020_OR_030) {
33 __asm__ __volatile__("pflush #0,#4"); 38 __asm__ __volatile__("pflush #0,#4");
39 }
34} 40}
35 41
36static inline void __flush_tlb040_one(unsigned long addr) 42static inline void __flush_tlb040_one(unsigned long addr)
@@ -43,7 +49,9 @@ static inline void __flush_tlb040_one(unsigned long addr)
43 49
44static inline void __flush_tlb_one(unsigned long addr) 50static inline void __flush_tlb_one(unsigned long addr)
45{ 51{
46 if (CPU_IS_040_OR_060) 52 if (CPU_IS_COLDFIRE)
53 mmu_write(MMUOR, MMUOR_CNL);
54 else if (CPU_IS_040_OR_060)
47 __flush_tlb040_one(addr); 55 __flush_tlb040_one(addr);
48 else if (CPU_IS_020_OR_030) 56 else if (CPU_IS_020_OR_030)
49 __asm__ __volatile__("pflush #0,#4,(%0)" : : "a" (addr)); 57 __asm__ __volatile__("pflush #0,#4,(%0)" : : "a" (addr));
@@ -56,12 +64,15 @@ static inline void __flush_tlb_one(unsigned long addr)
56 */ 64 */
57static inline void flush_tlb_all(void) 65static inline void flush_tlb_all(void)
58{ 66{
59 if (CPU_IS_040_OR_060) 67 if (CPU_IS_COLDFIRE) {
68 mmu_write(MMUOR, MMUOR_CNL);
69 } else if (CPU_IS_040_OR_060) {
60 __asm__ __volatile__(".chip 68040\n\t" 70 __asm__ __volatile__(".chip 68040\n\t"
61 "pflusha\n\t" 71 "pflusha\n\t"
62 ".chip 68k"); 72 ".chip 68k");
63 else if (CPU_IS_020_OR_030) 73 } else if (CPU_IS_020_OR_030) {
64 __asm__ __volatile__("pflusha"); 74 __asm__ __volatile__("pflusha");
75 }
65} 76}
66 77
67static inline void flush_tlb_mm(struct mm_struct *mm) 78static inline void flush_tlb_mm(struct mm_struct *mm)
diff --git a/arch/m68k/include/asm/traps.h b/arch/m68k/include/asm/traps.h
index 151068f64f44..4aff3358fbaf 100644
--- a/arch/m68k/include/asm/traps.h
+++ b/arch/m68k/include/asm/traps.h
@@ -18,6 +18,7 @@
18 18
19typedef void (*e_vector)(void); 19typedef void (*e_vector)(void);
20extern e_vector vectors[]; 20extern e_vector vectors[];
21extern e_vector *_ramvec;
21 22
22asmlinkage void auto_inthandler(void); 23asmlinkage void auto_inthandler(void);
23asmlinkage void user_inthandler(void); 24asmlinkage void user_inthandler(void);
diff --git a/arch/m68k/include/asm/uaccess_mm.h b/arch/m68k/include/asm/uaccess_mm.h
index 7107f3fbdbb6..9c80cd515b20 100644
--- a/arch/m68k/include/asm/uaccess_mm.h
+++ b/arch/m68k/include/asm/uaccess_mm.h
@@ -21,6 +21,22 @@ static inline int access_ok(int type, const void __user *addr,
21} 21}
22 22
23/* 23/*
24 * Not all varients of the 68k family support the notion of address spaces.
25 * The traditional 680x0 parts do, and they use the sfc/dfc registers and
26 * the "moves" instruction to access user space from kernel space. Other
27 * family members like ColdFire don't support this, and only have a single
28 * address space, and use the usual "move" instruction for user space access.
29 *
30 * Outside of this difference the user space access functions are the same.
31 * So lets keep the code simple and just define in what we need to use.
32 */
33#ifdef CONFIG_CPU_HAS_ADDRESS_SPACES
34#define MOVES "moves"
35#else
36#define MOVES "move"
37#endif
38
39/*
24 * The exception table consists of pairs of addresses: the first is the 40 * The exception table consists of pairs of addresses: the first is the
25 * address of an instruction that is allowed to fault, and the second is 41 * address of an instruction that is allowed to fault, and the second is
26 * the address at which the program should continue. No registers are 42 * the address at which the program should continue. No registers are
@@ -43,7 +59,7 @@ extern int __get_user_bad(void);
43 59
44#define __put_user_asm(res, x, ptr, bwl, reg, err) \ 60#define __put_user_asm(res, x, ptr, bwl, reg, err) \
45asm volatile ("\n" \ 61asm volatile ("\n" \
46 "1: moves."#bwl" %2,%1\n" \ 62 "1: "MOVES"."#bwl" %2,%1\n" \
47 "2:\n" \ 63 "2:\n" \
48 " .section .fixup,\"ax\"\n" \ 64 " .section .fixup,\"ax\"\n" \
49 " .even\n" \ 65 " .even\n" \
@@ -83,8 +99,8 @@ asm volatile ("\n" \
83 { \ 99 { \
84 const void __user *__pu_ptr = (ptr); \ 100 const void __user *__pu_ptr = (ptr); \
85 asm volatile ("\n" \ 101 asm volatile ("\n" \
86 "1: moves.l %2,(%1)+\n" \ 102 "1: "MOVES".l %2,(%1)+\n" \
87 "2: moves.l %R2,(%1)\n" \ 103 "2: "MOVES".l %R2,(%1)\n" \
88 "3:\n" \ 104 "3:\n" \
89 " .section .fixup,\"ax\"\n" \ 105 " .section .fixup,\"ax\"\n" \
90 " .even\n" \ 106 " .even\n" \
@@ -115,12 +131,12 @@ asm volatile ("\n" \
115#define __get_user_asm(res, x, ptr, type, bwl, reg, err) ({ \ 131#define __get_user_asm(res, x, ptr, type, bwl, reg, err) ({ \
116 type __gu_val; \ 132 type __gu_val; \
117 asm volatile ("\n" \ 133 asm volatile ("\n" \
118 "1: moves."#bwl" %2,%1\n" \ 134 "1: "MOVES"."#bwl" %2,%1\n" \
119 "2:\n" \ 135 "2:\n" \
120 " .section .fixup,\"ax\"\n" \ 136 " .section .fixup,\"ax\"\n" \
121 " .even\n" \ 137 " .even\n" \
122 "10: move.l %3,%0\n" \ 138 "10: move.l %3,%0\n" \
123 " sub."#bwl" %1,%1\n" \ 139 " sub.l %1,%1\n" \
124 " jra 2b\n" \ 140 " jra 2b\n" \
125 " .previous\n" \ 141 " .previous\n" \
126 "\n" \ 142 "\n" \
@@ -152,8 +168,8 @@ asm volatile ("\n" \
152 const void *__gu_ptr = (ptr); \ 168 const void *__gu_ptr = (ptr); \
153 u64 __gu_val; \ 169 u64 __gu_val; \
154 asm volatile ("\n" \ 170 asm volatile ("\n" \
155 "1: moves.l (%2)+,%1\n" \ 171 "1: "MOVES".l (%2)+,%1\n" \
156 "2: moves.l (%2),%R1\n" \ 172 "2: "MOVES".l (%2),%R1\n" \
157 "3:\n" \ 173 "3:\n" \
158 " .section .fixup,\"ax\"\n" \ 174 " .section .fixup,\"ax\"\n" \
159 " .even\n" \ 175 " .even\n" \
@@ -188,12 +204,12 @@ unsigned long __generic_copy_to_user(void __user *to, const void *from, unsigned
188 204
189#define __constant_copy_from_user_asm(res, to, from, tmp, n, s1, s2, s3)\ 205#define __constant_copy_from_user_asm(res, to, from, tmp, n, s1, s2, s3)\
190 asm volatile ("\n" \ 206 asm volatile ("\n" \
191 "1: moves."#s1" (%2)+,%3\n" \ 207 "1: "MOVES"."#s1" (%2)+,%3\n" \
192 " move."#s1" %3,(%1)+\n" \ 208 " move."#s1" %3,(%1)+\n" \
193 "2: moves."#s2" (%2)+,%3\n" \ 209 "2: "MOVES"."#s2" (%2)+,%3\n" \
194 " move."#s2" %3,(%1)+\n" \ 210 " move."#s2" %3,(%1)+\n" \
195 " .ifnc \""#s3"\",\"\"\n" \ 211 " .ifnc \""#s3"\",\"\"\n" \
196 "3: moves."#s3" (%2)+,%3\n" \ 212 "3: "MOVES"."#s3" (%2)+,%3\n" \
197 " move."#s3" %3,(%1)+\n" \ 213 " move."#s3" %3,(%1)+\n" \
198 " .endif\n" \ 214 " .endif\n" \
199 "4:\n" \ 215 "4:\n" \
@@ -269,13 +285,13 @@ __constant_copy_from_user(void *to, const void __user *from, unsigned long n)
269#define __constant_copy_to_user_asm(res, to, from, tmp, n, s1, s2, s3) \ 285#define __constant_copy_to_user_asm(res, to, from, tmp, n, s1, s2, s3) \
270 asm volatile ("\n" \ 286 asm volatile ("\n" \
271 " move."#s1" (%2)+,%3\n" \ 287 " move."#s1" (%2)+,%3\n" \
272 "11: moves."#s1" %3,(%1)+\n" \ 288 "11: "MOVES"."#s1" %3,(%1)+\n" \
273 "12: move."#s2" (%2)+,%3\n" \ 289 "12: move."#s2" (%2)+,%3\n" \
274 "21: moves."#s2" %3,(%1)+\n" \ 290 "21: "MOVES"."#s2" %3,(%1)+\n" \
275 "22:\n" \ 291 "22:\n" \
276 " .ifnc \""#s3"\",\"\"\n" \ 292 " .ifnc \""#s3"\",\"\"\n" \
277 " move."#s3" (%2)+,%3\n" \ 293 " move."#s3" (%2)+,%3\n" \
278 "31: moves."#s3" %3,(%1)+\n" \ 294 "31: "MOVES"."#s3" %3,(%1)+\n" \
279 "32:\n" \ 295 "32:\n" \
280 " .endif\n" \ 296 " .endif\n" \
281 "4:\n" \ 297 "4:\n" \
diff --git a/arch/m68k/include/asm/ucontext.h b/arch/m68k/include/asm/ucontext.h
index 00dcc5176c57..e4e22669edc0 100644
--- a/arch/m68k/include/asm/ucontext.h
+++ b/arch/m68k/include/asm/ucontext.h
@@ -7,11 +7,7 @@ typedef greg_t gregset_t[NGREG];
7 7
8typedef struct fpregset { 8typedef struct fpregset {
9 int f_fpcntl[3]; 9 int f_fpcntl[3];
10#ifdef __mcoldfire__
11 int f_fpregs[8][2];
12#else
13 int f_fpregs[8*3]; 10 int f_fpregs[8*3];
14#endif
15} fpregset_t; 11} fpregset_t;
16 12
17struct mcontext { 13struct mcontext {
diff --git a/arch/m68k/kernel/Makefile b/arch/m68k/kernel/Makefile
index c5696193281a..40d29a788b05 100644
--- a/arch/m68k/kernel/Makefile
+++ b/arch/m68k/kernel/Makefile
@@ -2,19 +2,24 @@
2# Makefile for the linux kernel. 2# Makefile for the linux kernel.
3# 3#
4 4
5extra-$(CONFIG_MMU) := head.o 5extra-$(CONFIG_AMIGA) := head.o
6extra-$(CONFIG_ATARI) := head.o
7extra-$(CONFIG_MAC) := head.o
8extra-$(CONFIG_APOLLO) := head.o
9extra-$(CONFIG_VME) := head.o
10extra-$(CONFIG_HP300) := head.o
11extra-$(CONFIG_Q40) := head.o
12extra-$(CONFIG_SUN3X) := head.o
6extra-$(CONFIG_SUN3) := sun3-head.o 13extra-$(CONFIG_SUN3) := sun3-head.o
7extra-y += vmlinux.lds 14extra-y += vmlinux.lds
8 15
9obj-y := entry.o irq.o m68k_ksyms.o module.o process.o ptrace.o setup.o \ 16obj-y := entry.o init_task.o irq.o m68k_ksyms.o module.o process.o ptrace.o
10 signal.o sys_m68k.o syscalltable.o time.o traps.o 17obj-y += setup.o signal.o sys_m68k.o syscalltable.o time.o traps.o
11 18
12obj-$(CONFIG_MMU) += ints.o vectors.o 19obj-$(CONFIG_MMU_MOTOROLA) += ints.o vectors.o
20obj-$(CONFIG_MMU_SUN3) += ints.o vectors.o
13 21
14ifndef CONFIG_MMU_SUN3 22ifndef CONFIG_MMU_SUN3
15obj-y += dma.o 23obj-y += dma.o
16endif
17ifndef CONFIG_MMU
18obj-y += init_task.o
19endif 24endif
20 25
diff --git a/arch/m68k/kernel/asm-offsets.c b/arch/m68k/kernel/asm-offsets.c
index 983fed9d469b..a972b00cd77d 100644
--- a/arch/m68k/kernel/asm-offsets.c
+++ b/arch/m68k/kernel/asm-offsets.c
@@ -24,8 +24,7 @@ int main(void)
24 /* offsets into the task struct */ 24 /* offsets into the task struct */
25 DEFINE(TASK_THREAD, offsetof(struct task_struct, thread)); 25 DEFINE(TASK_THREAD, offsetof(struct task_struct, thread));
26 DEFINE(TASK_MM, offsetof(struct task_struct, mm)); 26 DEFINE(TASK_MM, offsetof(struct task_struct, mm));
27 DEFINE(TASK_INFO, offsetof(struct task_struct, thread.info)); 27 DEFINE(TASK_STACK, offsetof(struct task_struct, stack));
28 DEFINE(TASK_TINFO, offsetof(struct task_struct, thread.info));
29 28
30 /* offsets into the thread struct */ 29 /* offsets into the thread struct */
31 DEFINE(THREAD_KSP, offsetof(struct thread_struct, ksp)); 30 DEFINE(THREAD_KSP, offsetof(struct thread_struct, ksp));
diff --git a/arch/m68k/kernel/entry.S b/arch/m68k/kernel/entry.S
index 081cf96f243b..b8daf64e347d 100644
--- a/arch/m68k/kernel/entry.S
+++ b/arch/m68k/kernel/entry.S
@@ -1,4 +1,4 @@
1#ifdef CONFIG_MMU 1#if defined(CONFIG_MMU) && !defined(CONFIG_COLDFIRE)
2#include "entry_mm.S" 2#include "entry_mm.S"
3#else 3#else
4#include "entry_no.S" 4#include "entry_no.S"
diff --git a/arch/m68k/kernel/entry_mm.S b/arch/m68k/kernel/entry_mm.S
index c713f514843d..675a854966a6 100644
--- a/arch/m68k/kernel/entry_mm.S
+++ b/arch/m68k/kernel/entry_mm.S
@@ -99,7 +99,8 @@ do_trace_exit:
99 jra .Lret_from_exception 99 jra .Lret_from_exception
100 100
101ENTRY(ret_from_signal) 101ENTRY(ret_from_signal)
102 tstb %curptr@(TASK_INFO+TINFO_FLAGS+2) 102 movel %curptr@(TASK_STACK),%a1
103 tstb %a1@(TINFO_FLAGS+2)
103 jge 1f 104 jge 1f
104 jbsr syscall_trace 105 jbsr syscall_trace
1051: RESTORE_SWITCH_STACK 1061: RESTORE_SWITCH_STACK
@@ -120,11 +121,13 @@ ENTRY(system_call)
120 SAVE_ALL_SYS 121 SAVE_ALL_SYS
121 122
122 GET_CURRENT(%d1) 123 GET_CURRENT(%d1)
124 movel %d1,%a1
125
123 | save top of frame 126 | save top of frame
124 movel %sp,%curptr@(TASK_THREAD+THREAD_ESP0) 127 movel %sp,%curptr@(TASK_THREAD+THREAD_ESP0)
125 128
126 | syscall trace? 129 | syscall trace?
127 tstb %curptr@(TASK_INFO+TINFO_FLAGS+2) 130 tstb %a1@(TINFO_FLAGS+2)
128 jmi do_trace_entry 131 jmi do_trace_entry
129 cmpl #NR_syscalls,%d0 132 cmpl #NR_syscalls,%d0
130 jcc badsys 133 jcc badsys
@@ -133,7 +136,8 @@ syscall:
133 movel %d0,%sp@(PT_OFF_D0) | save the return value 136 movel %d0,%sp@(PT_OFF_D0) | save the return value
134ret_from_syscall: 137ret_from_syscall:
135 |oriw #0x0700,%sr 138 |oriw #0x0700,%sr
136 movew %curptr@(TASK_INFO+TINFO_FLAGS+2),%d0 139 movel %curptr@(TASK_STACK),%a1
140 movew %a1@(TINFO_FLAGS+2),%d0
137 jne syscall_exit_work 141 jne syscall_exit_work
1381: RESTORE_ALL 1421: RESTORE_ALL
139 143
@@ -159,7 +163,8 @@ ENTRY(ret_from_exception)
159 andw #ALLOWINT,%sr 163 andw #ALLOWINT,%sr
160 164
161resume_userspace: 165resume_userspace:
162 moveb %curptr@(TASK_INFO+TINFO_FLAGS+3),%d0 166 movel %curptr@(TASK_STACK),%a1
167 moveb %a1@(TINFO_FLAGS+3),%d0
163 jne exit_work 168 jne exit_work
1641: RESTORE_ALL 1691: RESTORE_ALL
165 170
@@ -199,7 +204,8 @@ do_delayed_trace:
199ENTRY(auto_inthandler) 204ENTRY(auto_inthandler)
200 SAVE_ALL_INT 205 SAVE_ALL_INT
201 GET_CURRENT(%d0) 206 GET_CURRENT(%d0)
202 addqb #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1) 207 movel %d0,%a1
208 addqb #1,%a1@(TINFO_PREEMPT+1)
203 | put exception # in d0 209 | put exception # in d0
204 bfextu %sp@(PT_OFF_FORMATVEC){#4,#10},%d0 210 bfextu %sp@(PT_OFF_FORMATVEC){#4,#10},%d0
205 subw #VEC_SPUR,%d0 211 subw #VEC_SPUR,%d0
@@ -211,7 +217,8 @@ auto_irqhandler_fixup = . + 2
211 addql #8,%sp | pop parameters off stack 217 addql #8,%sp | pop parameters off stack
212 218
213ret_from_interrupt: 219ret_from_interrupt:
214 subqb #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1) 220 movel %curptr@(TASK_STACK),%a1
221 subqb #1,%a1@(TINFO_PREEMPT+1)
215 jeq ret_from_last_interrupt 222 jeq ret_from_last_interrupt
2162: RESTORE_ALL 2232: RESTORE_ALL
217 224
@@ -232,7 +239,8 @@ ret_from_last_interrupt:
232ENTRY(user_inthandler) 239ENTRY(user_inthandler)
233 SAVE_ALL_INT 240 SAVE_ALL_INT
234 GET_CURRENT(%d0) 241 GET_CURRENT(%d0)
235 addqb #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1) 242 movel %d0,%a1
243 addqb #1,%a1@(TINFO_PREEMPT+1)
236 | put exception # in d0 244 | put exception # in d0
237 bfextu %sp@(PT_OFF_FORMATVEC){#4,#10},%d0 245 bfextu %sp@(PT_OFF_FORMATVEC){#4,#10},%d0
238user_irqvec_fixup = . + 2 246user_irqvec_fixup = . + 2
@@ -243,7 +251,8 @@ user_irqvec_fixup = . + 2
243 jsr do_IRQ | process the IRQ 251 jsr do_IRQ | process the IRQ
244 addql #8,%sp | pop parameters off stack 252 addql #8,%sp | pop parameters off stack
245 253
246 subqb #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1) 254 movel %curptr@(TASK_STACK),%a1
255 subqb #1,%a1@(TINFO_PREEMPT+1)
247 jeq ret_from_last_interrupt 256 jeq ret_from_last_interrupt
248 RESTORE_ALL 257 RESTORE_ALL
249 258
@@ -252,13 +261,15 @@ user_irqvec_fixup = . + 2
252ENTRY(bad_inthandler) 261ENTRY(bad_inthandler)
253 SAVE_ALL_INT 262 SAVE_ALL_INT
254 GET_CURRENT(%d0) 263 GET_CURRENT(%d0)
255 addqb #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1) 264 movel %d0,%a1
265 addqb #1,%a1@(TINFO_PREEMPT+1)
256 266
257 movel %sp,%sp@- 267 movel %sp,%sp@-
258 jsr handle_badint 268 jsr handle_badint
259 addql #4,%sp 269 addql #4,%sp
260 270
261 subqb #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1) 271 movel %curptr@(TASK_STACK),%a1
272 subqb #1,%a1@(TINFO_PREEMPT+1)
262 jeq ret_from_last_interrupt 273 jeq ret_from_last_interrupt
263 RESTORE_ALL 274 RESTORE_ALL
264 275
diff --git a/arch/m68k/kernel/entry_no.S b/arch/m68k/kernel/entry_no.S
index 1b4289061a64..d80cba45589f 100644
--- a/arch/m68k/kernel/entry_no.S
+++ b/arch/m68k/kernel/entry_no.S
@@ -44,8 +44,7 @@
44 44
45ENTRY(buserr) 45ENTRY(buserr)
46 SAVE_ALL_INT 46 SAVE_ALL_INT
47 moveq #-1,%d0 47 GET_CURRENT(%d0)
48 movel %d0,%sp@(PT_OFF_ORIG_D0)
49 movel %sp,%sp@- /* stack frame pointer argument */ 48 movel %sp,%sp@- /* stack frame pointer argument */
50 jsr buserr_c 49 jsr buserr_c
51 addql #4,%sp 50 addql #4,%sp
@@ -53,8 +52,7 @@ ENTRY(buserr)
53 52
54ENTRY(trap) 53ENTRY(trap)
55 SAVE_ALL_INT 54 SAVE_ALL_INT
56 moveq #-1,%d0 55 GET_CURRENT(%d0)
57 movel %d0,%sp@(PT_OFF_ORIG_D0)
58 movel %sp,%sp@- /* stack frame pointer argument */ 56 movel %sp,%sp@- /* stack frame pointer argument */
59 jsr trap_c 57 jsr trap_c
60 addql #4,%sp 58 addql #4,%sp
@@ -65,8 +63,7 @@ ENTRY(trap)
65.globl dbginterrupt 63.globl dbginterrupt
66ENTRY(dbginterrupt) 64ENTRY(dbginterrupt)
67 SAVE_ALL_INT 65 SAVE_ALL_INT
68 moveq #-1,%d0 66 GET_CURRENT(%d0)
69 movel %d0,%sp@(PT_OFF_ORIG_D0)
70 movel %sp,%sp@- /* stack frame pointer argument */ 67 movel %sp,%sp@- /* stack frame pointer argument */
71 jsr dbginterrupt_c 68 jsr dbginterrupt_c
72 addql #4,%sp 69 addql #4,%sp
diff --git a/arch/m68k/kernel/init_task.c b/arch/m68k/kernel/init_task.c
index cbf9dc3cc51d..c744cfc6bfa1 100644
--- a/arch/m68k/kernel/init_task.c
+++ b/arch/m68k/kernel/init_task.c
@@ -19,7 +19,6 @@ static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
19 * 19 *
20 * All other task structs will be allocated on slabs in fork.c 20 * All other task structs will be allocated on slabs in fork.c
21 */ 21 */
22__asm__(".align 4");
23struct task_struct init_task = INIT_TASK(init_task); 22struct task_struct init_task = INIT_TASK(init_task);
24 23
25EXPORT_SYMBOL(init_task); 24EXPORT_SYMBOL(init_task);
@@ -27,7 +26,7 @@ EXPORT_SYMBOL(init_task);
27/* 26/*
28 * Initial thread structure. 27 * Initial thread structure.
29 * 28 *
30 * We need to make sure that this is 8192-byte aligned due to the 29 * We need to make sure that this is THREAD size aligned due to the
31 * way process stacks are handled. This is done by having a special 30 * way process stacks are handled. This is done by having a special
32 * "init_task" linker map entry.. 31 * "init_task" linker map entry..
33 */ 32 */
diff --git a/arch/m68k/kernel/m68k_ksyms.c b/arch/m68k/kernel/m68k_ksyms.c
index 1b7a14d1a000..774c1bd59c36 100644
--- a/arch/m68k/kernel/m68k_ksyms.c
+++ b/arch/m68k/kernel/m68k_ksyms.c
@@ -14,7 +14,7 @@ EXPORT_SYMBOL(__ashrdi3);
14EXPORT_SYMBOL(__lshrdi3); 14EXPORT_SYMBOL(__lshrdi3);
15EXPORT_SYMBOL(__muldi3); 15EXPORT_SYMBOL(__muldi3);
16 16
17#if defined(CONFIG_M68000) || defined(CONFIG_COLDFIRE) 17#if defined(CONFIG_CPU_HAS_NO_MULDIV64)
18/* 18/*
19 * Simpler 68k and ColdFire parts also need a few other gcc functions. 19 * Simpler 68k and ColdFire parts also need a few other gcc functions.
20 */ 20 */
diff --git a/arch/m68k/kernel/process_mm.c b/arch/m68k/kernel/process_mm.c
index 1bc223aa07ec..125f34e00bf0 100644
--- a/arch/m68k/kernel/process_mm.c
+++ b/arch/m68k/kernel/process_mm.c
@@ -33,22 +33,6 @@
33#include <asm/setup.h> 33#include <asm/setup.h>
34#include <asm/pgtable.h> 34#include <asm/pgtable.h>
35 35
36/*
37 * Initial task/thread structure. Make this a per-architecture thing,
38 * because different architectures tend to have different
39 * alignment requirements and potentially different initial
40 * setup.
41 */
42static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
43static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
44union thread_union init_thread_union __init_task_data
45 __attribute__((aligned(THREAD_SIZE))) =
46 { INIT_THREAD_INFO(init_task) };
47
48/* initial task structure */
49struct task_struct init_task = INIT_TASK(init_task);
50
51EXPORT_SYMBOL(init_task);
52 36
53asmlinkage void ret_from_fork(void); 37asmlinkage void ret_from_fork(void);
54 38
@@ -188,9 +172,7 @@ void flush_thread(void)
188 172
189 current->thread.fs = __USER_DS; 173 current->thread.fs = __USER_DS;
190 if (!FPU_IS_EMU) 174 if (!FPU_IS_EMU)
191 asm volatile (".chip 68k/68881\n\t" 175 asm volatile ("frestore %0@" : : "a" (&zero) : "memory");
192 "frestore %0@\n\t"
193 ".chip 68k" : : "a" (&zero));
194} 176}
195 177
196/* 178/*
@@ -264,11 +246,28 @@ int copy_thread(unsigned long clone_flags, unsigned long usp,
264 /* Copy the current fpu state */ 246 /* Copy the current fpu state */
265 asm volatile ("fsave %0" : : "m" (p->thread.fpstate[0]) : "memory"); 247 asm volatile ("fsave %0" : : "m" (p->thread.fpstate[0]) : "memory");
266 248
267 if (!CPU_IS_060 ? p->thread.fpstate[0] : p->thread.fpstate[2]) 249 if (!CPU_IS_060 ? p->thread.fpstate[0] : p->thread.fpstate[2]) {
268 asm volatile ("fmovemx %/fp0-%/fp7,%0\n\t" 250 if (CPU_IS_COLDFIRE) {
269 "fmoveml %/fpiar/%/fpcr/%/fpsr,%1" 251 asm volatile ("fmovemd %/fp0-%/fp7,%0\n\t"
270 : : "m" (p->thread.fp[0]), "m" (p->thread.fpcntl[0]) 252 "fmovel %/fpiar,%1\n\t"
271 : "memory"); 253 "fmovel %/fpcr,%2\n\t"
254 "fmovel %/fpsr,%3"
255 :
256 : "m" (p->thread.fp[0]),
257 "m" (p->thread.fpcntl[0]),
258 "m" (p->thread.fpcntl[1]),
259 "m" (p->thread.fpcntl[2])
260 : "memory");
261 } else {
262 asm volatile ("fmovemx %/fp0-%/fp7,%0\n\t"
263 "fmoveml %/fpiar/%/fpcr/%/fpsr,%1"
264 :
265 : "m" (p->thread.fp[0]),
266 "m" (p->thread.fpcntl[0])
267 : "memory");
268 }
269 }
270
272 /* Restore the state in case the fpu was busy */ 271 /* Restore the state in case the fpu was busy */
273 asm volatile ("frestore %0" : : "m" (p->thread.fpstate[0])); 272 asm volatile ("frestore %0" : : "m" (p->thread.fpstate[0]));
274 } 273 }
@@ -301,12 +300,28 @@ int dump_fpu (struct pt_regs *regs, struct user_m68kfp_struct *fpu)
301 if (!CPU_IS_060 ? !fpustate[0] : !fpustate[2]) 300 if (!CPU_IS_060 ? !fpustate[0] : !fpustate[2])
302 return 0; 301 return 0;
303 302
304 asm volatile ("fmovem %/fpiar/%/fpcr/%/fpsr,%0" 303 if (CPU_IS_COLDFIRE) {
305 :: "m" (fpu->fpcntl[0]) 304 asm volatile ("fmovel %/fpiar,%0\n\t"
306 : "memory"); 305 "fmovel %/fpcr,%1\n\t"
307 asm volatile ("fmovemx %/fp0-%/fp7,%0" 306 "fmovel %/fpsr,%2\n\t"
308 :: "m" (fpu->fpregs[0]) 307 "fmovemd %/fp0-%/fp7,%3"
309 : "memory"); 308 :
309 : "m" (fpu->fpcntl[0]),
310 "m" (fpu->fpcntl[1]),
311 "m" (fpu->fpcntl[2]),
312 "m" (fpu->fpregs[0])
313 : "memory");
314 } else {
315 asm volatile ("fmovem %/fpiar/%/fpcr/%/fpsr,%0"
316 :
317 : "m" (fpu->fpcntl[0])
318 : "memory");
319 asm volatile ("fmovemx %/fp0-%/fp7,%0"
320 :
321 : "m" (fpu->fpregs[0])
322 : "memory");
323 }
324
310 return 1; 325 return 1;
311} 326}
312EXPORT_SYMBOL(dump_fpu); 327EXPORT_SYMBOL(dump_fpu);
diff --git a/arch/m68k/kernel/ptrace_mm.c b/arch/m68k/kernel/ptrace_mm.c
index 0b252683cefb..7bc999b73529 100644
--- a/arch/m68k/kernel/ptrace_mm.c
+++ b/arch/m68k/kernel/ptrace_mm.c
@@ -18,6 +18,7 @@
18#include <linux/ptrace.h> 18#include <linux/ptrace.h>
19#include <linux/user.h> 19#include <linux/user.h>
20#include <linux/signal.h> 20#include <linux/signal.h>
21#include <linux/tracehook.h>
21 22
22#include <asm/uaccess.h> 23#include <asm/uaccess.h>
23#include <asm/page.h> 24#include <asm/page.h>
@@ -275,3 +276,20 @@ asmlinkage void syscall_trace(void)
275 current->exit_code = 0; 276 current->exit_code = 0;
276 } 277 }
277} 278}
279
280#ifdef CONFIG_COLDFIRE
281asmlinkage int syscall_trace_enter(void)
282{
283 int ret = 0;
284
285 if (test_thread_flag(TIF_SYSCALL_TRACE))
286 ret = tracehook_report_syscall_entry(task_pt_regs(current));
287 return ret;
288}
289
290asmlinkage void syscall_trace_leave(void)
291{
292 if (test_thread_flag(TIF_SYSCALL_TRACE))
293 tracehook_report_syscall_exit(task_pt_regs(current), 0);
294}
295#endif /* CONFIG_COLDFIRE */
diff --git a/arch/m68k/kernel/setup_mm.c b/arch/m68k/kernel/setup_mm.c
index c3b45061dd08..d872ce4807c9 100644
--- a/arch/m68k/kernel/setup_mm.c
+++ b/arch/m68k/kernel/setup_mm.c
@@ -221,7 +221,8 @@ void __init setup_arch(char **cmdline_p)
221#endif 221#endif
222 222
223 /* The bootinfo is located right after the kernel bss */ 223 /* The bootinfo is located right after the kernel bss */
224 m68k_parse_bootinfo((const struct bi_record *)_end); 224 if (!CPU_IS_COLDFIRE)
225 m68k_parse_bootinfo((const struct bi_record *)_end);
225 226
226 if (CPU_IS_040) 227 if (CPU_IS_040)
227 m68k_is040or060 = 4; 228 m68k_is040or060 = 4;
@@ -235,7 +236,7 @@ void __init setup_arch(char **cmdline_p)
235 * with them, we should add a test to check_bugs() below] */ 236 * with them, we should add a test to check_bugs() below] */
236#ifndef CONFIG_M68KFPU_EMU_ONLY 237#ifndef CONFIG_M68KFPU_EMU_ONLY
237 /* clear the fpu if we have one */ 238 /* clear the fpu if we have one */
238 if (m68k_fputype & (FPU_68881|FPU_68882|FPU_68040|FPU_68060)) { 239 if (m68k_fputype & (FPU_68881|FPU_68882|FPU_68040|FPU_68060|FPU_COLDFIRE)) {
239 volatile int zero = 0; 240 volatile int zero = 0;
240 asm volatile ("frestore %0" : : "m" (zero)); 241 asm volatile ("frestore %0" : : "m" (zero));
241 } 242 }
@@ -258,6 +259,10 @@ void __init setup_arch(char **cmdline_p)
258 init_mm.end_data = (unsigned long)_edata; 259 init_mm.end_data = (unsigned long)_edata;
259 init_mm.brk = (unsigned long)_end; 260 init_mm.brk = (unsigned long)_end;
260 261
262#if defined(CONFIG_BOOTPARAM)
263 strncpy(m68k_command_line, CONFIG_BOOTPARAM_STRING, CL_SIZE);
264 m68k_command_line[CL_SIZE - 1] = 0;
265#endif /* CONFIG_BOOTPARAM */
261 *cmdline_p = m68k_command_line; 266 *cmdline_p = m68k_command_line;
262 memcpy(boot_command_line, *cmdline_p, CL_SIZE); 267 memcpy(boot_command_line, *cmdline_p, CL_SIZE);
263 268
@@ -323,6 +328,11 @@ void __init setup_arch(char **cmdline_p)
323 config_sun3x(); 328 config_sun3x();
324 break; 329 break;
325#endif 330#endif
331#ifdef CONFIG_COLDFIRE
332 case MACH_M54XX:
333 config_BSP(NULL, 0);
334 break;
335#endif
326 default: 336 default:
327 panic("No configuration setup"); 337 panic("No configuration setup");
328 } 338 }
@@ -384,6 +394,7 @@ static int show_cpuinfo(struct seq_file *m, void *v)
384#define LOOP_CYCLES_68030 (8) 394#define LOOP_CYCLES_68030 (8)
385#define LOOP_CYCLES_68040 (3) 395#define LOOP_CYCLES_68040 (3)
386#define LOOP_CYCLES_68060 (1) 396#define LOOP_CYCLES_68060 (1)
397#define LOOP_CYCLES_COLDFIRE (2)
387 398
388 if (CPU_IS_020) { 399 if (CPU_IS_020) {
389 cpu = "68020"; 400 cpu = "68020";
@@ -397,6 +408,9 @@ static int show_cpuinfo(struct seq_file *m, void *v)
397 } else if (CPU_IS_060) { 408 } else if (CPU_IS_060) {
398 cpu = "68060"; 409 cpu = "68060";
399 clockfactor = LOOP_CYCLES_68060; 410 clockfactor = LOOP_CYCLES_68060;
411 } else if (CPU_IS_COLDFIRE) {
412 cpu = "ColdFire";
413 clockfactor = LOOP_CYCLES_COLDFIRE;
400 } else { 414 } else {
401 cpu = "680x0"; 415 cpu = "680x0";
402 clockfactor = 0; 416 clockfactor = 0;
@@ -415,6 +429,8 @@ static int show_cpuinfo(struct seq_file *m, void *v)
415 fpu = "68060"; 429 fpu = "68060";
416 else if (m68k_fputype & FPU_SUNFPA) 430 else if (m68k_fputype & FPU_SUNFPA)
417 fpu = "Sun FPA"; 431 fpu = "Sun FPA";
432 else if (m68k_fputype & FPU_COLDFIRE)
433 fpu = "ColdFire";
418 else 434 else
419 fpu = "none"; 435 fpu = "none";
420#endif 436#endif
@@ -431,6 +447,8 @@ static int show_cpuinfo(struct seq_file *m, void *v)
431 mmu = "Sun-3"; 447 mmu = "Sun-3";
432 else if (m68k_mmutype & MMU_APOLLO) 448 else if (m68k_mmutype & MMU_APOLLO)
433 mmu = "Apollo"; 449 mmu = "Apollo";
450 else if (m68k_mmutype & MMU_COLDFIRE)
451 mmu = "ColdFire";
434 else 452 else
435 mmu = "unknown"; 453 mmu = "unknown";
436 454
diff --git a/arch/m68k/kernel/setup_no.c b/arch/m68k/kernel/setup_no.c
index 2ed8c0fb1517..ca3df0dc7e88 100644
--- a/arch/m68k/kernel/setup_no.c
+++ b/arch/m68k/kernel/setup_no.c
@@ -47,7 +47,6 @@ EXPORT_SYMBOL(memory_end);
47char __initdata command_line[COMMAND_LINE_SIZE]; 47char __initdata command_line[COMMAND_LINE_SIZE];
48 48
49/* machine dependent timer functions */ 49/* machine dependent timer functions */
50void (*mach_gettod)(int*, int*, int*, int*, int*, int*);
51int (*mach_set_clock_mmss)(unsigned long); 50int (*mach_set_clock_mmss)(unsigned long);
52 51
53/* machine dependent reboot functions */ 52/* machine dependent reboot functions */
diff --git a/arch/m68k/kernel/signal_mm.c b/arch/m68k/kernel/signal_mm.c
index a0afc239304e..cb856f9da655 100644
--- a/arch/m68k/kernel/signal_mm.c
+++ b/arch/m68k/kernel/signal_mm.c
@@ -56,7 +56,11 @@ static const int frame_extra_sizes[16] = {
56 [1] = -1, /* sizeof(((struct frame *)0)->un.fmt1), */ 56 [1] = -1, /* sizeof(((struct frame *)0)->un.fmt1), */
57 [2] = sizeof(((struct frame *)0)->un.fmt2), 57 [2] = sizeof(((struct frame *)0)->un.fmt2),
58 [3] = sizeof(((struct frame *)0)->un.fmt3), 58 [3] = sizeof(((struct frame *)0)->un.fmt3),
59#ifdef CONFIG_COLDFIRE
60 [4] = 0,
61#else
59 [4] = sizeof(((struct frame *)0)->un.fmt4), 62 [4] = sizeof(((struct frame *)0)->un.fmt4),
63#endif
60 [5] = -1, /* sizeof(((struct frame *)0)->un.fmt5), */ 64 [5] = -1, /* sizeof(((struct frame *)0)->un.fmt5), */
61 [6] = -1, /* sizeof(((struct frame *)0)->un.fmt6), */ 65 [6] = -1, /* sizeof(((struct frame *)0)->un.fmt6), */
62 [7] = sizeof(((struct frame *)0)->un.fmt7), 66 [7] = sizeof(((struct frame *)0)->un.fmt7),
@@ -84,7 +88,11 @@ int handle_kernel_fault(struct pt_regs *regs)
84 regs->stkadj = frame_extra_sizes[regs->format]; 88 regs->stkadj = frame_extra_sizes[regs->format];
85 tregs = (struct pt_regs *)((long)regs + regs->stkadj); 89 tregs = (struct pt_regs *)((long)regs + regs->stkadj);
86 tregs->vector = regs->vector; 90 tregs->vector = regs->vector;
91#ifdef CONFIG_COLDFIRE
92 tregs->format = 4;
93#else
87 tregs->format = 0; 94 tregs->format = 0;
95#endif
88 tregs->pc = fixup->fixup; 96 tregs->pc = fixup->fixup;
89 tregs->sr = regs->sr; 97 tregs->sr = regs->sr;
90 98
@@ -195,7 +203,8 @@ static inline int restore_fpu_state(struct sigcontext *sc)
195 203
196 if (CPU_IS_060 ? sc->sc_fpstate[2] : sc->sc_fpstate[0]) { 204 if (CPU_IS_060 ? sc->sc_fpstate[2] : sc->sc_fpstate[0]) {
197 /* Verify the frame format. */ 205 /* Verify the frame format. */
198 if (!CPU_IS_060 && (sc->sc_fpstate[0] != fpu_version)) 206 if (!(CPU_IS_060 || CPU_IS_COLDFIRE) &&
207 (sc->sc_fpstate[0] != fpu_version))
199 goto out; 208 goto out;
200 if (CPU_IS_020_OR_030) { 209 if (CPU_IS_020_OR_030) {
201 if (m68k_fputype & FPU_68881 && 210 if (m68k_fputype & FPU_68881 &&
@@ -214,19 +223,43 @@ static inline int restore_fpu_state(struct sigcontext *sc)
214 sc->sc_fpstate[3] == 0x60 || 223 sc->sc_fpstate[3] == 0x60 ||
215 sc->sc_fpstate[3] == 0xe0)) 224 sc->sc_fpstate[3] == 0xe0))
216 goto out; 225 goto out;
226 } else if (CPU_IS_COLDFIRE) {
227 if (!(sc->sc_fpstate[0] == 0x00 ||
228 sc->sc_fpstate[0] == 0x05 ||
229 sc->sc_fpstate[0] == 0xe5))
230 goto out;
217 } else 231 } else
218 goto out; 232 goto out;
219 233
220 __asm__ volatile (".chip 68k/68881\n\t" 234 if (CPU_IS_COLDFIRE) {
221 "fmovemx %0,%%fp0-%%fp1\n\t" 235 __asm__ volatile ("fmovemd %0,%%fp0-%%fp1\n\t"
222 "fmoveml %1,%%fpcr/%%fpsr/%%fpiar\n\t" 236 "fmovel %1,%%fpcr\n\t"
223 ".chip 68k" 237 "fmovel %2,%%fpsr\n\t"
224 : /* no outputs */ 238 "fmovel %3,%%fpiar"
225 : "m" (*sc->sc_fpregs), "m" (*sc->sc_fpcntl)); 239 : /* no outputs */
240 : "m" (sc->sc_fpregs[0]),
241 "m" (sc->sc_fpcntl[0]),
242 "m" (sc->sc_fpcntl[1]),
243 "m" (sc->sc_fpcntl[2]));
244 } else {
245 __asm__ volatile (".chip 68k/68881\n\t"
246 "fmovemx %0,%%fp0-%%fp1\n\t"
247 "fmoveml %1,%%fpcr/%%fpsr/%%fpiar\n\t"
248 ".chip 68k"
249 : /* no outputs */
250 : "m" (*sc->sc_fpregs),
251 "m" (*sc->sc_fpcntl));
252 }
253 }
254
255 if (CPU_IS_COLDFIRE) {
256 __asm__ volatile ("frestore %0" : : "m" (*sc->sc_fpstate));
257 } else {
258 __asm__ volatile (".chip 68k/68881\n\t"
259 "frestore %0\n\t"
260 ".chip 68k"
261 : : "m" (*sc->sc_fpstate));
226 } 262 }
227 __asm__ volatile (".chip 68k/68881\n\t"
228 "frestore %0\n\t"
229 ".chip 68k" : : "m" (*sc->sc_fpstate));
230 err = 0; 263 err = 0;
231 264
232out: 265out:
@@ -241,7 +274,7 @@ out:
241static inline int rt_restore_fpu_state(struct ucontext __user *uc) 274static inline int rt_restore_fpu_state(struct ucontext __user *uc)
242{ 275{
243 unsigned char fpstate[FPCONTEXT_SIZE]; 276 unsigned char fpstate[FPCONTEXT_SIZE];
244 int context_size = CPU_IS_060 ? 8 : 0; 277 int context_size = CPU_IS_060 ? 8 : (CPU_IS_COLDFIRE ? 12 : 0);
245 fpregset_t fpregs; 278 fpregset_t fpregs;
246 int err = 1; 279 int err = 1;
247 280
@@ -260,10 +293,11 @@ static inline int rt_restore_fpu_state(struct ucontext __user *uc)
260 if (__get_user(*(long *)fpstate, (long __user *)&uc->uc_fpstate)) 293 if (__get_user(*(long *)fpstate, (long __user *)&uc->uc_fpstate))
261 goto out; 294 goto out;
262 if (CPU_IS_060 ? fpstate[2] : fpstate[0]) { 295 if (CPU_IS_060 ? fpstate[2] : fpstate[0]) {
263 if (!CPU_IS_060) 296 if (!(CPU_IS_060 || CPU_IS_COLDFIRE))
264 context_size = fpstate[1]; 297 context_size = fpstate[1];
265 /* Verify the frame format. */ 298 /* Verify the frame format. */
266 if (!CPU_IS_060 && (fpstate[0] != fpu_version)) 299 if (!(CPU_IS_060 || CPU_IS_COLDFIRE) &&
300 (fpstate[0] != fpu_version))
267 goto out; 301 goto out;
268 if (CPU_IS_020_OR_030) { 302 if (CPU_IS_020_OR_030) {
269 if (m68k_fputype & FPU_68881 && 303 if (m68k_fputype & FPU_68881 &&
@@ -282,26 +316,50 @@ static inline int rt_restore_fpu_state(struct ucontext __user *uc)
282 fpstate[3] == 0x60 || 316 fpstate[3] == 0x60 ||
283 fpstate[3] == 0xe0)) 317 fpstate[3] == 0xe0))
284 goto out; 318 goto out;
319 } else if (CPU_IS_COLDFIRE) {
320 if (!(fpstate[3] == 0x00 ||
321 fpstate[3] == 0x05 ||
322 fpstate[3] == 0xe5))
323 goto out;
285 } else 324 } else
286 goto out; 325 goto out;
287 if (__copy_from_user(&fpregs, &uc->uc_mcontext.fpregs, 326 if (__copy_from_user(&fpregs, &uc->uc_mcontext.fpregs,
288 sizeof(fpregs))) 327 sizeof(fpregs)))
289 goto out; 328 goto out;
290 __asm__ volatile (".chip 68k/68881\n\t" 329
291 "fmovemx %0,%%fp0-%%fp7\n\t" 330 if (CPU_IS_COLDFIRE) {
292 "fmoveml %1,%%fpcr/%%fpsr/%%fpiar\n\t" 331 __asm__ volatile ("fmovemd %0,%%fp0-%%fp7\n\t"
293 ".chip 68k" 332 "fmovel %1,%%fpcr\n\t"
294 : /* no outputs */ 333 "fmovel %2,%%fpsr\n\t"
295 : "m" (*fpregs.f_fpregs), 334 "fmovel %3,%%fpiar"
296 "m" (*fpregs.f_fpcntl)); 335 : /* no outputs */
336 : "m" (fpregs.f_fpregs[0]),
337 "m" (fpregs.f_fpcntl[0]),
338 "m" (fpregs.f_fpcntl[1]),
339 "m" (fpregs.f_fpcntl[2]));
340 } else {
341 __asm__ volatile (".chip 68k/68881\n\t"
342 "fmovemx %0,%%fp0-%%fp7\n\t"
343 "fmoveml %1,%%fpcr/%%fpsr/%%fpiar\n\t"
344 ".chip 68k"
345 : /* no outputs */
346 : "m" (*fpregs.f_fpregs),
347 "m" (*fpregs.f_fpcntl));
348 }
297 } 349 }
298 if (context_size && 350 if (context_size &&
299 __copy_from_user(fpstate + 4, (long __user *)&uc->uc_fpstate + 1, 351 __copy_from_user(fpstate + 4, (long __user *)&uc->uc_fpstate + 1,
300 context_size)) 352 context_size))
301 goto out; 353 goto out;
302 __asm__ volatile (".chip 68k/68881\n\t" 354
303 "frestore %0\n\t" 355 if (CPU_IS_COLDFIRE) {
304 ".chip 68k" : : "m" (*fpstate)); 356 __asm__ volatile ("frestore %0" : : "m" (*fpstate));
357 } else {
358 __asm__ volatile (".chip 68k/68881\n\t"
359 "frestore %0\n\t"
360 ".chip 68k"
361 : : "m" (*fpstate));
362 }
305 err = 0; 363 err = 0;
306 364
307out: 365out:
@@ -336,8 +394,12 @@ static int mangle_kernel_stack(struct pt_regs *regs, int formatvec,
336 regs->format = formatvec >> 12; 394 regs->format = formatvec >> 12;
337 regs->vector = formatvec & 0xfff; 395 regs->vector = formatvec & 0xfff;
338#define frame_offset (sizeof(struct pt_regs)+sizeof(struct switch_stack)) 396#define frame_offset (sizeof(struct pt_regs)+sizeof(struct switch_stack))
339 __asm__ __volatile__ 397 __asm__ __volatile__ (
340 (" movel %0,%/a0\n\t" 398#ifdef CONFIG_COLDFIRE
399 " movel %0,%/sp\n\t"
400 " bra ret_from_signal\n"
401#else
402 " movel %0,%/a0\n\t"
341 " subl %1,%/a0\n\t" /* make room on stack */ 403 " subl %1,%/a0\n\t" /* make room on stack */
342 " movel %/a0,%/sp\n\t" /* set stack pointer */ 404 " movel %/a0,%/sp\n\t" /* set stack pointer */
343 /* move switch_stack and pt_regs */ 405 /* move switch_stack and pt_regs */
@@ -350,6 +412,7 @@ static int mangle_kernel_stack(struct pt_regs *regs, int formatvec,
350 "2: movel %4@+,%/a0@+\n\t" 412 "2: movel %4@+,%/a0@+\n\t"
351 " dbra %1,2b\n\t" 413 " dbra %1,2b\n\t"
352 " bral ret_from_signal\n" 414 " bral ret_from_signal\n"
415#endif
353 : /* no outputs, it doesn't ever return */ 416 : /* no outputs, it doesn't ever return */
354 : "a" (sw), "d" (fsize), "d" (frame_offset/4-1), 417 : "a" (sw), "d" (fsize), "d" (frame_offset/4-1),
355 "n" (frame_offset), "a" (buf + fsize/4) 418 "n" (frame_offset), "a" (buf + fsize/4)
@@ -516,10 +579,15 @@ static inline void save_fpu_state(struct sigcontext *sc, struct pt_regs *regs)
516 return; 579 return;
517 } 580 }
518 581
519 __asm__ volatile (".chip 68k/68881\n\t" 582 if (CPU_IS_COLDFIRE) {
520 "fsave %0\n\t" 583 __asm__ volatile ("fsave %0"
521 ".chip 68k" 584 : : "m" (*sc->sc_fpstate) : "memory");
522 : : "m" (*sc->sc_fpstate) : "memory"); 585 } else {
586 __asm__ volatile (".chip 68k/68881\n\t"
587 "fsave %0\n\t"
588 ".chip 68k"
589 : : "m" (*sc->sc_fpstate) : "memory");
590 }
523 591
524 if (CPU_IS_060 ? sc->sc_fpstate[2] : sc->sc_fpstate[0]) { 592 if (CPU_IS_060 ? sc->sc_fpstate[2] : sc->sc_fpstate[0]) {
525 fpu_version = sc->sc_fpstate[0]; 593 fpu_version = sc->sc_fpstate[0];
@@ -530,21 +598,35 @@ static inline void save_fpu_state(struct sigcontext *sc, struct pt_regs *regs)
530 if (*(unsigned short *) sc->sc_fpstate == 0x1f38) 598 if (*(unsigned short *) sc->sc_fpstate == 0x1f38)
531 sc->sc_fpstate[0x38] |= 1 << 3; 599 sc->sc_fpstate[0x38] |= 1 << 3;
532 } 600 }
533 __asm__ volatile (".chip 68k/68881\n\t" 601
534 "fmovemx %%fp0-%%fp1,%0\n\t" 602 if (CPU_IS_COLDFIRE) {
535 "fmoveml %%fpcr/%%fpsr/%%fpiar,%1\n\t" 603 __asm__ volatile ("fmovemd %%fp0-%%fp1,%0\n\t"
536 ".chip 68k" 604 "fmovel %%fpcr,%1\n\t"
537 : "=m" (*sc->sc_fpregs), 605 "fmovel %%fpsr,%2\n\t"
538 "=m" (*sc->sc_fpcntl) 606 "fmovel %%fpiar,%3"
539 : /* no inputs */ 607 : "=m" (sc->sc_fpregs[0]),
540 : "memory"); 608 "=m" (sc->sc_fpcntl[0]),
609 "=m" (sc->sc_fpcntl[1]),
610 "=m" (sc->sc_fpcntl[2])
611 : /* no inputs */
612 : "memory");
613 } else {
614 __asm__ volatile (".chip 68k/68881\n\t"
615 "fmovemx %%fp0-%%fp1,%0\n\t"
616 "fmoveml %%fpcr/%%fpsr/%%fpiar,%1\n\t"
617 ".chip 68k"
618 : "=m" (*sc->sc_fpregs),
619 "=m" (*sc->sc_fpcntl)
620 : /* no inputs */
621 : "memory");
622 }
541 } 623 }
542} 624}
543 625
544static inline int rt_save_fpu_state(struct ucontext __user *uc, struct pt_regs *regs) 626static inline int rt_save_fpu_state(struct ucontext __user *uc, struct pt_regs *regs)
545{ 627{
546 unsigned char fpstate[FPCONTEXT_SIZE]; 628 unsigned char fpstate[FPCONTEXT_SIZE];
547 int context_size = CPU_IS_060 ? 8 : 0; 629 int context_size = CPU_IS_060 ? 8 : (CPU_IS_COLDFIRE ? 12 : 0);
548 int err = 0; 630 int err = 0;
549 631
550 if (FPU_IS_EMU) { 632 if (FPU_IS_EMU) {
@@ -557,15 +639,19 @@ static inline int rt_save_fpu_state(struct ucontext __user *uc, struct pt_regs *
557 return err; 639 return err;
558 } 640 }
559 641
560 __asm__ volatile (".chip 68k/68881\n\t" 642 if (CPU_IS_COLDFIRE) {
561 "fsave %0\n\t" 643 __asm__ volatile ("fsave %0" : : "m" (*fpstate) : "memory");
562 ".chip 68k" 644 } else {
563 : : "m" (*fpstate) : "memory"); 645 __asm__ volatile (".chip 68k/68881\n\t"
646 "fsave %0\n\t"
647 ".chip 68k"
648 : : "m" (*fpstate) : "memory");
649 }
564 650
565 err |= __put_user(*(long *)fpstate, (long __user *)&uc->uc_fpstate); 651 err |= __put_user(*(long *)fpstate, (long __user *)&uc->uc_fpstate);
566 if (CPU_IS_060 ? fpstate[2] : fpstate[0]) { 652 if (CPU_IS_060 ? fpstate[2] : fpstate[0]) {
567 fpregset_t fpregs; 653 fpregset_t fpregs;
568 if (!CPU_IS_060) 654 if (!(CPU_IS_060 || CPU_IS_COLDFIRE))
569 context_size = fpstate[1]; 655 context_size = fpstate[1];
570 fpu_version = fpstate[0]; 656 fpu_version = fpstate[0];
571 if (CPU_IS_020_OR_030 && 657 if (CPU_IS_020_OR_030 &&
@@ -575,14 +661,27 @@ static inline int rt_save_fpu_state(struct ucontext __user *uc, struct pt_regs *
575 if (*(unsigned short *) fpstate == 0x1f38) 661 if (*(unsigned short *) fpstate == 0x1f38)
576 fpstate[0x38] |= 1 << 3; 662 fpstate[0x38] |= 1 << 3;
577 } 663 }
578 __asm__ volatile (".chip 68k/68881\n\t" 664 if (CPU_IS_COLDFIRE) {
579 "fmovemx %%fp0-%%fp7,%0\n\t" 665 __asm__ volatile ("fmovemd %%fp0-%%fp7,%0\n\t"
580 "fmoveml %%fpcr/%%fpsr/%%fpiar,%1\n\t" 666 "fmovel %%fpcr,%1\n\t"
581 ".chip 68k" 667 "fmovel %%fpsr,%2\n\t"
582 : "=m" (*fpregs.f_fpregs), 668 "fmovel %%fpiar,%3"
583 "=m" (*fpregs.f_fpcntl) 669 : "=m" (fpregs.f_fpregs[0]),
584 : /* no inputs */ 670 "=m" (fpregs.f_fpcntl[0]),
585 : "memory"); 671 "=m" (fpregs.f_fpcntl[1]),
672 "=m" (fpregs.f_fpcntl[2])
673 : /* no inputs */
674 : "memory");
675 } else {
676 __asm__ volatile (".chip 68k/68881\n\t"
677 "fmovemx %%fp0-%%fp7,%0\n\t"
678 "fmoveml %%fpcr/%%fpsr/%%fpiar,%1\n\t"
679 ".chip 68k"
680 : "=m" (*fpregs.f_fpregs),
681 "=m" (*fpregs.f_fpcntl)
682 : /* no inputs */
683 : "memory");
684 }
586 err |= copy_to_user(&uc->uc_mcontext.fpregs, &fpregs, 685 err |= copy_to_user(&uc->uc_mcontext.fpregs, &fpregs,
587 sizeof(fpregs)); 686 sizeof(fpregs));
588 } 687 }
@@ -679,8 +778,7 @@ static inline void push_cache (unsigned long vaddr)
679 "cpushl %%bc,(%0)\n\t" 778 "cpushl %%bc,(%0)\n\t"
680 ".chip 68k" 779 ".chip 68k"
681 : : "a" (temp)); 780 : : "a" (temp));
682 } 781 } else if (!CPU_IS_COLDFIRE) {
683 else {
684 /* 782 /*
685 * 68030/68020 have no writeback cache; 783 * 68030/68020 have no writeback cache;
686 * still need to clear icache. 784 * still need to clear icache.
diff --git a/arch/m68k/kernel/time.c b/arch/m68k/kernel/time.c
index a5cf40c26de5..75ab79b3bdeb 100644
--- a/arch/m68k/kernel/time.c
+++ b/arch/m68k/kernel/time.c
@@ -1,4 +1,4 @@
1#ifdef CONFIG_MMU 1#if defined(CONFIG_MMU) && !defined(CONFIG_COLDFIRE)
2#include "time_mm.c" 2#include "time_mm.c"
3#else 3#else
4#include "time_no.c" 4#include "time_no.c"
diff --git a/arch/m68k/kernel/time_no.c b/arch/m68k/kernel/time_no.c
index 6623909f70e6..3ef0f7768dcd 100644
--- a/arch/m68k/kernel/time_no.c
+++ b/arch/m68k/kernel/time_no.c
@@ -26,6 +26,9 @@
26 26
27#define TICK_SIZE (tick_nsec / 1000) 27#define TICK_SIZE (tick_nsec / 1000)
28 28
29/* machine dependent timer functions */
30void (*mach_gettod)(int*, int*, int*, int*, int*, int*);
31
29static inline int set_rtc_mmss(unsigned long nowtime) 32static inline int set_rtc_mmss(unsigned long nowtime)
30{ 33{
31 if (mach_set_clock_mmss) 34 if (mach_set_clock_mmss)
diff --git a/arch/m68k/kernel/traps.c b/arch/m68k/kernel/traps.c
index 89362f2bb56a..a76452ca964e 100644
--- a/arch/m68k/kernel/traps.c
+++ b/arch/m68k/kernel/traps.c
@@ -706,6 +706,88 @@ create_atc_entry:
706#endif /* CPU_M68020_OR_M68030 */ 706#endif /* CPU_M68020_OR_M68030 */
707#endif /* !CONFIG_SUN3 */ 707#endif /* !CONFIG_SUN3 */
708 708
709#if defined(CONFIG_COLDFIRE) && defined(CONFIG_MMU)
710#include <asm/mcfmmu.h>
711
712/*
713 * The following table converts the FS encoding of a ColdFire
714 * exception stack frame into the error_code value needed by
715 * do_fault.
716*/
717static const unsigned char fs_err_code[] = {
718 0, /* 0000 */
719 0, /* 0001 */
720 0, /* 0010 */
721 0, /* 0011 */
722 1, /* 0100 */
723 0, /* 0101 */
724 0, /* 0110 */
725 0, /* 0111 */
726 2, /* 1000 */
727 3, /* 1001 */
728 2, /* 1010 */
729 0, /* 1011 */
730 1, /* 1100 */
731 1, /* 1101 */
732 0, /* 1110 */
733 0 /* 1111 */
734};
735
736static inline void access_errorcf(unsigned int fs, struct frame *fp)
737{
738 unsigned long mmusr, addr;
739 unsigned int err_code;
740 int need_page_fault;
741
742 mmusr = mmu_read(MMUSR);
743 addr = mmu_read(MMUAR);
744
745 /*
746 * error_code:
747 * bit 0 == 0 means no page found, 1 means protection fault
748 * bit 1 == 0 means read, 1 means write
749 */
750 switch (fs) {
751 case 5: /* 0101 TLB opword X miss */
752 need_page_fault = cf_tlb_miss(&fp->ptregs, 0, 0, 0);
753 addr = fp->ptregs.pc;
754 break;
755 case 6: /* 0110 TLB extension word X miss */
756 need_page_fault = cf_tlb_miss(&fp->ptregs, 0, 0, 1);
757 addr = fp->ptregs.pc + sizeof(long);
758 break;
759 case 10: /* 1010 TLB W miss */
760 need_page_fault = cf_tlb_miss(&fp->ptregs, 1, 1, 0);
761 break;
762 case 14: /* 1110 TLB R miss */
763 need_page_fault = cf_tlb_miss(&fp->ptregs, 0, 1, 0);
764 break;
765 default:
766 /* 0000 Normal */
767 /* 0001 Reserved */
768 /* 0010 Interrupt during debug service routine */
769 /* 0011 Reserved */
770 /* 0100 X Protection */
771 /* 0111 IFP in emulator mode */
772 /* 1000 W Protection*/
773 /* 1001 Write error*/
774 /* 1011 Reserved*/
775 /* 1100 R Protection*/
776 /* 1101 R Protection*/
777 /* 1111 OEP in emulator mode*/
778 need_page_fault = 1;
779 break;
780 }
781
782 if (need_page_fault) {
783 err_code = fs_err_code[fs];
784 if ((fs == 13) && (mmusr & MMUSR_WF)) /* rd-mod-wr access */
785 err_code |= 2; /* bit1 - write, bit0 - protection */
786 do_page_fault(&fp->ptregs, addr, err_code);
787 }
788}
789#endif /* CONFIG_COLDFIRE CONFIG_MMU */
790
709asmlinkage void buserr_c(struct frame *fp) 791asmlinkage void buserr_c(struct frame *fp)
710{ 792{
711 /* Only set esp0 if coming from user mode */ 793 /* Only set esp0 if coming from user mode */
@@ -716,6 +798,28 @@ asmlinkage void buserr_c(struct frame *fp)
716 printk ("*** Bus Error *** Format is %x\n", fp->ptregs.format); 798 printk ("*** Bus Error *** Format is %x\n", fp->ptregs.format);
717#endif 799#endif
718 800
801#if defined(CONFIG_COLDFIRE) && defined(CONFIG_MMU)
802 if (CPU_IS_COLDFIRE) {
803 unsigned int fs;
804 fs = (fp->ptregs.vector & 0x3) |
805 ((fp->ptregs.vector & 0xc00) >> 8);
806 switch (fs) {
807 case 0x5:
808 case 0x6:
809 case 0x7:
810 case 0x9:
811 case 0xa:
812 case 0xd:
813 case 0xe:
814 case 0xf:
815 access_errorcf(fs, fp);
816 return;
817 default:
818 break;
819 }
820 }
821#endif /* CONFIG_COLDFIRE && CONFIG_MMU */
822
719 switch (fp->ptregs.format) { 823 switch (fp->ptregs.format) {
720#if defined (CONFIG_M68060) 824#if defined (CONFIG_M68060)
721 case 4: /* 68060 access error */ 825 case 4: /* 68060 access error */
diff --git a/arch/m68k/kernel/vmlinux.lds_no.S b/arch/m68k/kernel/vmlinux-nommu.lds
index 4e2389340837..8e66ccb0935e 100644
--- a/arch/m68k/kernel/vmlinux.lds_no.S
+++ b/arch/m68k/kernel/vmlinux-nommu.lds
@@ -69,6 +69,7 @@ SECTIONS {
69 SCHED_TEXT 69 SCHED_TEXT
70 LOCK_TEXT 70 LOCK_TEXT
71 *(.text..lock) 71 *(.text..lock)
72 *(.fixup)
72 73
73 . = ALIGN(16); /* Exception table */ 74 . = ALIGN(16); /* Exception table */
74 __start___ex_table = .; 75 __start___ex_table = .;
@@ -161,6 +162,13 @@ SECTIONS {
161 _edata = . ; 162 _edata = . ;
162 } > DATA 163 } > DATA
163 164
165 .m68k_fixup : {
166 __start_fixup = .;
167 *(.m68k_fixup)
168 __stop_fixup = .;
169 } > DATA
170 NOTES > DATA
171
164 .init.text : { 172 .init.text : {
165 . = ALIGN(PAGE_SIZE); 173 . = ALIGN(PAGE_SIZE);
166 __init_begin = .; 174 __init_begin = .;
diff --git a/arch/m68k/kernel/vmlinux-std.lds b/arch/m68k/kernel/vmlinux-std.lds
index d0993594f558..63407c836826 100644
--- a/arch/m68k/kernel/vmlinux-std.lds
+++ b/arch/m68k/kernel/vmlinux-std.lds
@@ -31,7 +31,9 @@ SECTIONS
31 31
32 RW_DATA_SECTION(16, PAGE_SIZE, THREAD_SIZE) 32 RW_DATA_SECTION(16, PAGE_SIZE, THREAD_SIZE)
33 33
34 _sbss = .;
34 BSS_SECTION(0, 0, 0) 35 BSS_SECTION(0, 0, 0)
36 _ebss = .;
35 37
36 _edata = .; /* End of data section */ 38 _edata = .; /* End of data section */
37 39
diff --git a/arch/m68k/kernel/vmlinux-sun3.lds b/arch/m68k/kernel/vmlinux-sun3.lds
index 8080469ee6c1..ad0f46d64c0b 100644
--- a/arch/m68k/kernel/vmlinux-sun3.lds
+++ b/arch/m68k/kernel/vmlinux-sun3.lds
@@ -44,7 +44,9 @@ __init_begin = .;
44 . = ALIGN(PAGE_SIZE); 44 . = ALIGN(PAGE_SIZE);
45 __init_end = .; 45 __init_end = .;
46 46
47 _sbss = .;
47 BSS_SECTION(0, 0, 0) 48 BSS_SECTION(0, 0, 0)
49 _ebss = .;
48 50
49 _end = . ; 51 _end = . ;
50 52
diff --git a/arch/m68k/kernel/vmlinux.lds.S b/arch/m68k/kernel/vmlinux.lds.S
index 030dabf0bc53..69ec79638870 100644
--- a/arch/m68k/kernel/vmlinux.lds.S
+++ b/arch/m68k/kernel/vmlinux.lds.S
@@ -1,5 +1,14 @@
1#ifdef CONFIG_MMU 1#if defined(CONFIG_MMU) && !defined(CONFIG_COLDFIRE)
2#include "vmlinux.lds_mm.S" 2PHDRS
3{
4 text PT_LOAD FILEHDR PHDRS FLAGS (7);
5 data PT_LOAD FLAGS (7);
6}
7#ifdef CONFIG_SUN3
8#include "vmlinux-sun3.lds"
3#else 9#else
4#include "vmlinux.lds_no.S" 10#include "vmlinux-std.lds"
11#endif
12#else
13#include "vmlinux-nommu.lds"
5#endif 14#endif
diff --git a/arch/m68k/kernel/vmlinux.lds_mm.S b/arch/m68k/kernel/vmlinux.lds_mm.S
deleted file mode 100644
index 99ba315bd0a8..000000000000
--- a/arch/m68k/kernel/vmlinux.lds_mm.S
+++ /dev/null
@@ -1,10 +0,0 @@
1PHDRS
2{
3 text PT_LOAD FILEHDR PHDRS FLAGS (7);
4 data PT_LOAD FLAGS (7);
5}
6#ifdef CONFIG_SUN3
7#include "vmlinux-sun3.lds"
8#else
9#include "vmlinux-std.lds"
10#endif
diff --git a/arch/m68k/lib/Makefile b/arch/m68k/lib/Makefile
index 1a1bd9067e90..a9d782d34276 100644
--- a/arch/m68k/lib/Makefile
+++ b/arch/m68k/lib/Makefile
@@ -6,9 +6,11 @@
6lib-y := ashldi3.o ashrdi3.o lshrdi3.o muldi3.o \ 6lib-y := ashldi3.o ashrdi3.o lshrdi3.o muldi3.o \
7 memcpy.o memset.o memmove.o 7 memcpy.o memset.o memmove.o
8 8
9ifdef CONFIG_MMU 9lib-$(CONFIG_MMU) += string.o uaccess.o
10lib-y += string.o uaccess.o checksum_mm.o 10lib-$(CONFIG_CPU_HAS_NO_MULDIV64) += mulsi3.o divsi3.o udivsi3.o
11else 11lib-$(CONFIG_CPU_HAS_NO_MULDIV64) += modsi3.o umodsi3.o
12lib-y += mulsi3.o divsi3.o udivsi3.o modsi3.o umodsi3.o checksum_no.o 12
13ifndef CONFIG_GENERIC_CSUM
14lib-y += checksum.o
13endif 15endif
14 16
diff --git a/arch/m68k/lib/checksum_mm.c b/arch/m68k/lib/checksum.c
index 6216f12a756b..6216f12a756b 100644
--- a/arch/m68k/lib/checksum_mm.c
+++ b/arch/m68k/lib/checksum.c
diff --git a/arch/m68k/lib/checksum_no.c b/arch/m68k/lib/checksum_no.c
deleted file mode 100644
index e4c6354da765..000000000000
--- a/arch/m68k/lib/checksum_no.c
+++ /dev/null
@@ -1,156 +0,0 @@
1/*
2 * INET An implementation of the TCP/IP protocol suite for the LINUX
3 * operating system. INET is implemented using the BSD Socket
4 * interface as the means of communication with the user level.
5 *
6 * IP/TCP/UDP checksumming routines
7 *
8 * Authors: Jorge Cwik, <jorge@laser.satlink.net>
9 * Arnt Gulbrandsen, <agulbra@nvg.unit.no>
10 * Tom May, <ftom@netcom.com>
11 * Andreas Schwab, <schwab@issan.informatik.uni-dortmund.de>
12 * Lots of code moved from tcp.c and ip.c; see those files
13 * for more names.
14 *
15 * 03/02/96 Jes Sorensen, Andreas Schwab, Roman Hodek:
16 * Fixed some nasty bugs, causing some horrible crashes.
17 * A: At some points, the sum (%0) was used as
18 * length-counter instead of the length counter
19 * (%1). Thanks to Roman Hodek for pointing this out.
20 * B: GCC seems to mess up if one uses too many
21 * data-registers to hold input values and one tries to
22 * specify d0 and d1 as scratch registers. Letting gcc choose these
23 * registers itself solves the problem.
24 *
25 * This program is free software; you can redistribute it and/or
26 * modify it under the terms of the GNU General Public License
27 * as published by the Free Software Foundation; either version
28 * 2 of the License, or (at your option) any later version.
29 */
30
31/* Revised by Kenneth Albanowski for m68knommu. Basic problem: unaligned access kills, so most
32 of the assembly has to go. */
33
34#include <linux/module.h>
35#include <net/checksum.h>
36
37static inline unsigned short from32to16(unsigned long x)
38{
39 /* add up 16-bit and 16-bit for 16+c bit */
40 x = (x & 0xffff) + (x >> 16);
41 /* add up carry.. */
42 x = (x & 0xffff) + (x >> 16);
43 return x;
44}
45
46static unsigned long do_csum(const unsigned char * buff, int len)
47{
48 int odd, count;
49 unsigned long result = 0;
50
51 if (len <= 0)
52 goto out;
53 odd = 1 & (unsigned long) buff;
54 if (odd) {
55 result = *buff;
56 len--;
57 buff++;
58 }
59 count = len >> 1; /* nr of 16-bit words.. */
60 if (count) {
61 if (2 & (unsigned long) buff) {
62 result += *(unsigned short *) buff;
63 count--;
64 len -= 2;
65 buff += 2;
66 }
67 count >>= 1; /* nr of 32-bit words.. */
68 if (count) {
69 unsigned long carry = 0;
70 do {
71 unsigned long w = *(unsigned long *) buff;
72 count--;
73 buff += 4;
74 result += carry;
75 result += w;
76 carry = (w > result);
77 } while (count);
78 result += carry;
79 result = (result & 0xffff) + (result >> 16);
80 }
81 if (len & 2) {
82 result += *(unsigned short *) buff;
83 buff += 2;
84 }
85 }
86 if (len & 1)
87 result += (*buff << 8);
88 result = from32to16(result);
89 if (odd)
90 result = ((result >> 8) & 0xff) | ((result & 0xff) << 8);
91out:
92 return result;
93}
94
95#ifdef CONFIG_COLDFIRE
96/*
97 * This is a version of ip_compute_csum() optimized for IP headers,
98 * which always checksum on 4 octet boundaries.
99 */
100__sum16 ip_fast_csum(const void *iph, unsigned int ihl)
101{
102 return (__force __sum16)~do_csum(iph,ihl*4);
103}
104EXPORT_SYMBOL(ip_fast_csum);
105#endif
106
107/*
108 * computes the checksum of a memory block at buff, length len,
109 * and adds in "sum" (32-bit)
110 *
111 * returns a 32-bit number suitable for feeding into itself
112 * or csum_tcpudp_magic
113 *
114 * this function must be called with even lengths, except
115 * for the last fragment, which may be odd
116 *
117 * it's best to have buff aligned on a 32-bit boundary
118 */
119__wsum csum_partial(const void *buff, int len, __wsum sum)
120{
121 unsigned int result = do_csum(buff, len);
122
123 /* add in old sum, and carry.. */
124 result += (__force u32)sum;
125 if ((__force u32)sum > result)
126 result += 1;
127 return (__force __wsum)result;
128}
129
130EXPORT_SYMBOL(csum_partial);
131
132/*
133 * copy from fs while checksumming, otherwise like csum_partial
134 */
135
136__wsum
137csum_partial_copy_from_user(const void __user *src, void *dst,
138 int len, __wsum sum, int *csum_err)
139{
140 if (csum_err) *csum_err = 0;
141 memcpy(dst, (__force const void *)src, len);
142 return csum_partial(dst, len, sum);
143}
144EXPORT_SYMBOL(csum_partial_copy_from_user);
145
146/*
147 * copy from ds while checksumming, otherwise like csum_partial
148 */
149
150__wsum
151csum_partial_copy_nocheck(const void *src, void *dst, int len, __wsum sum)
152{
153 memcpy(dst, src, len);
154 return csum_partial(dst, len, sum);
155}
156EXPORT_SYMBOL(csum_partial_copy_nocheck);
diff --git a/arch/m68k/lib/uaccess.c b/arch/m68k/lib/uaccess.c
index 13854ed8cd9a..5664386338da 100644
--- a/arch/m68k/lib/uaccess.c
+++ b/arch/m68k/lib/uaccess.c
@@ -15,17 +15,17 @@ unsigned long __generic_copy_from_user(void *to, const void __user *from,
15 asm volatile ("\n" 15 asm volatile ("\n"
16 " tst.l %0\n" 16 " tst.l %0\n"
17 " jeq 2f\n" 17 " jeq 2f\n"
18 "1: moves.l (%1)+,%3\n" 18 "1: "MOVES".l (%1)+,%3\n"
19 " move.l %3,(%2)+\n" 19 " move.l %3,(%2)+\n"
20 " subq.l #1,%0\n" 20 " subq.l #1,%0\n"
21 " jne 1b\n" 21 " jne 1b\n"
22 "2: btst #1,%5\n" 22 "2: btst #1,%5\n"
23 " jeq 4f\n" 23 " jeq 4f\n"
24 "3: moves.w (%1)+,%3\n" 24 "3: "MOVES".w (%1)+,%3\n"
25 " move.w %3,(%2)+\n" 25 " move.w %3,(%2)+\n"
26 "4: btst #0,%5\n" 26 "4: btst #0,%5\n"
27 " jeq 6f\n" 27 " jeq 6f\n"
28 "5: moves.b (%1)+,%3\n" 28 "5: "MOVES".b (%1)+,%3\n"
29 " move.b %3,(%2)+\n" 29 " move.b %3,(%2)+\n"
30 "6:\n" 30 "6:\n"
31 " .section .fixup,\"ax\"\n" 31 " .section .fixup,\"ax\"\n"
@@ -68,17 +68,17 @@ unsigned long __generic_copy_to_user(void __user *to, const void *from,
68 " tst.l %0\n" 68 " tst.l %0\n"
69 " jeq 4f\n" 69 " jeq 4f\n"
70 "1: move.l (%1)+,%3\n" 70 "1: move.l (%1)+,%3\n"
71 "2: moves.l %3,(%2)+\n" 71 "2: "MOVES".l %3,(%2)+\n"
72 "3: subq.l #1,%0\n" 72 "3: subq.l #1,%0\n"
73 " jne 1b\n" 73 " jne 1b\n"
74 "4: btst #1,%5\n" 74 "4: btst #1,%5\n"
75 " jeq 6f\n" 75 " jeq 6f\n"
76 " move.w (%1)+,%3\n" 76 " move.w (%1)+,%3\n"
77 "5: moves.w %3,(%2)+\n" 77 "5: "MOVES".w %3,(%2)+\n"
78 "6: btst #0,%5\n" 78 "6: btst #0,%5\n"
79 " jeq 8f\n" 79 " jeq 8f\n"
80 " move.b (%1)+,%3\n" 80 " move.b (%1)+,%3\n"
81 "7: moves.b %3,(%2)+\n" 81 "7: "MOVES".b %3,(%2)+\n"
82 "8:\n" 82 "8:\n"
83 " .section .fixup,\"ax\"\n" 83 " .section .fixup,\"ax\"\n"
84 " .even\n" 84 " .even\n"
@@ -115,7 +115,7 @@ long strncpy_from_user(char *dst, const char __user *src, long count)
115 return count; 115 return count;
116 116
117 asm volatile ("\n" 117 asm volatile ("\n"
118 "1: moves.b (%2)+,%4\n" 118 "1: "MOVES".b (%2)+,%4\n"
119 " move.b %4,(%1)+\n" 119 " move.b %4,(%1)+\n"
120 " jeq 2f\n" 120 " jeq 2f\n"
121 " subq.l #1,%3\n" 121 " subq.l #1,%3\n"
@@ -152,7 +152,7 @@ long strnlen_user(const char __user *src, long n)
152 asm volatile ("\n" 152 asm volatile ("\n"
153 "1: subq.l #1,%1\n" 153 "1: subq.l #1,%1\n"
154 " jmi 3f\n" 154 " jmi 3f\n"
155 "2: moves.b (%0)+,%2\n" 155 "2: "MOVES".b (%0)+,%2\n"
156 " tst.b %2\n" 156 " tst.b %2\n"
157 " jne 1b\n" 157 " jne 1b\n"
158 " jra 4f\n" 158 " jra 4f\n"
@@ -188,15 +188,15 @@ unsigned long __clear_user(void __user *to, unsigned long n)
188 asm volatile ("\n" 188 asm volatile ("\n"
189 " tst.l %0\n" 189 " tst.l %0\n"
190 " jeq 3f\n" 190 " jeq 3f\n"
191 "1: moves.l %2,(%1)+\n" 191 "1: "MOVES".l %2,(%1)+\n"
192 "2: subq.l #1,%0\n" 192 "2: subq.l #1,%0\n"
193 " jne 1b\n" 193 " jne 1b\n"
194 "3: btst #1,%4\n" 194 "3: btst #1,%4\n"
195 " jeq 5f\n" 195 " jeq 5f\n"
196 "4: moves.w %2,(%1)+\n" 196 "4: "MOVES".w %2,(%1)+\n"
197 "5: btst #0,%4\n" 197 "5: btst #0,%4\n"
198 " jeq 7f\n" 198 " jeq 7f\n"
199 "6: moves.b %2,(%1)\n" 199 "6: "MOVES".b %2,(%1)\n"
200 "7:\n" 200 "7:\n"
201 " .section .fixup,\"ax\"\n" 201 " .section .fixup,\"ax\"\n"
202 " .even\n" 202 " .even\n"
diff --git a/arch/m68k/mm/Makefile b/arch/m68k/mm/Makefile
index 09cadf1058d5..cfbf3205724a 100644
--- a/arch/m68k/mm/Makefile
+++ b/arch/m68k/mm/Makefile
@@ -4,6 +4,8 @@
4 4
5obj-y := init.o 5obj-y := init.o
6 6
7obj-$(CONFIG_MMU) += cache.o fault.o hwtest.o 7obj-$(CONFIG_MMU) += cache.o fault.o
8obj-$(CONFIG_MMU_MOTOROLA) += kmap.o memory.o motorola.o 8obj-$(CONFIG_MMU_MOTOROLA) += kmap.o memory.o motorola.o hwtest.o
9obj-$(CONFIG_MMU_SUN3) += sun3kmap.o sun3mmu.o 9obj-$(CONFIG_MMU_SUN3) += sun3kmap.o sun3mmu.o hwtest.o
10obj-$(CONFIG_MMU_COLDFIRE) += kmap.o memory.o mcfmmu.o
11
diff --git a/arch/m68k/mm/cache.c b/arch/m68k/mm/cache.c
index 5437fff5fe07..95d0bf66e2e2 100644
--- a/arch/m68k/mm/cache.c
+++ b/arch/m68k/mm/cache.c
@@ -74,8 +74,16 @@ static unsigned long virt_to_phys_slow(unsigned long vaddr)
74/* RZ: use cpush %bc instead of cpush %dc, cinv %ic */ 74/* RZ: use cpush %bc instead of cpush %dc, cinv %ic */
75void flush_icache_range(unsigned long address, unsigned long endaddr) 75void flush_icache_range(unsigned long address, unsigned long endaddr)
76{ 76{
77 77 if (CPU_IS_COLDFIRE) {
78 if (CPU_IS_040_OR_060) { 78 unsigned long start, end;
79 start = address & ICACHE_SET_MASK;
80 end = endaddr & ICACHE_SET_MASK;
81 if (start > end) {
82 flush_cf_icache(0, end);
83 end = ICACHE_MAX_ADDR;
84 }
85 flush_cf_icache(start, end);
86 } else if (CPU_IS_040_OR_060) {
79 address &= PAGE_MASK; 87 address &= PAGE_MASK;
80 88
81 do { 89 do {
@@ -100,7 +108,17 @@ EXPORT_SYMBOL(flush_icache_range);
100void flush_icache_user_range(struct vm_area_struct *vma, struct page *page, 108void flush_icache_user_range(struct vm_area_struct *vma, struct page *page,
101 unsigned long addr, int len) 109 unsigned long addr, int len)
102{ 110{
103 if (CPU_IS_040_OR_060) { 111 if (CPU_IS_COLDFIRE) {
112 unsigned long start, end;
113 start = addr & ICACHE_SET_MASK;
114 end = (addr + len) & ICACHE_SET_MASK;
115 if (start > end) {
116 flush_cf_icache(0, end);
117 end = ICACHE_MAX_ADDR;
118 }
119 flush_cf_icache(start, end);
120
121 } else if (CPU_IS_040_OR_060) {
104 asm volatile ("nop\n\t" 122 asm volatile ("nop\n\t"
105 ".chip 68040\n\t" 123 ".chip 68040\n\t"
106 "cpushp %%bc,(%0)\n\t" 124 "cpushp %%bc,(%0)\n\t"
diff --git a/arch/m68k/mm/init_mm.c b/arch/m68k/mm/init_mm.c
index bbe525434ccb..89f3b203814b 100644
--- a/arch/m68k/mm/init_mm.c
+++ b/arch/m68k/mm/init_mm.c
@@ -24,6 +24,7 @@
24#include <asm/page.h> 24#include <asm/page.h>
25#include <asm/pgalloc.h> 25#include <asm/pgalloc.h>
26#include <asm/system.h> 26#include <asm/system.h>
27#include <asm/traps.h>
27#include <asm/machdep.h> 28#include <asm/machdep.h>
28#include <asm/io.h> 29#include <asm/io.h>
29#ifdef CONFIG_ATARI 30#ifdef CONFIG_ATARI
@@ -75,6 +76,38 @@ extern void init_pointer_table(unsigned long ptable);
75 76
76extern pmd_t *zero_pgtable; 77extern pmd_t *zero_pgtable;
77 78
79#if defined(CONFIG_MMU) && !defined(CONFIG_COLDFIRE)
80#define VECTORS &vectors[0]
81#else
82#define VECTORS _ramvec
83#endif
84
85void __init print_memmap(void)
86{
87#define UL(x) ((unsigned long) (x))
88#define MLK(b, t) UL(b), UL(t), (UL(t) - UL(b)) >> 10
89#define MLM(b, t) UL(b), UL(t), (UL(t) - UL(b)) >> 20
90#define MLK_ROUNDUP(b, t) b, t, DIV_ROUND_UP(((t) - (b)), 1024)
91
92 pr_notice("Virtual kernel memory layout:\n"
93 " vector : 0x%08lx - 0x%08lx (%4ld KiB)\n"
94 " kmap : 0x%08lx - 0x%08lx (%4ld MiB)\n"
95 " vmalloc : 0x%08lx - 0x%08lx (%4ld MiB)\n"
96 " lowmem : 0x%08lx - 0x%08lx (%4ld MiB)\n"
97 " .init : 0x%p" " - 0x%p" " (%4d KiB)\n"
98 " .text : 0x%p" " - 0x%p" " (%4d KiB)\n"
99 " .data : 0x%p" " - 0x%p" " (%4d KiB)\n"
100 " .bss : 0x%p" " - 0x%p" " (%4d KiB)\n",
101 MLK(VECTORS, VECTORS + 256),
102 MLM(KMAP_START, KMAP_END),
103 MLM(VMALLOC_START, VMALLOC_END),
104 MLM(PAGE_OFFSET, (unsigned long)high_memory),
105 MLK_ROUNDUP(__init_begin, __init_end),
106 MLK_ROUNDUP(_stext, _etext),
107 MLK_ROUNDUP(_sdata, _edata),
108 MLK_ROUNDUP(_sbss, _ebss));
109}
110
78void __init mem_init(void) 111void __init mem_init(void)
79{ 112{
80 pg_data_t *pgdat; 113 pg_data_t *pgdat;
@@ -106,7 +139,7 @@ void __init mem_init(void)
106 } 139 }
107 } 140 }
108 141
109#ifndef CONFIG_SUN3 142#if !defined(CONFIG_SUN3) && !defined(CONFIG_COLDFIRE)
110 /* insert pointer tables allocated so far into the tablelist */ 143 /* insert pointer tables allocated so far into the tablelist */
111 init_pointer_table((unsigned long)kernel_pg_dir); 144 init_pointer_table((unsigned long)kernel_pg_dir);
112 for (i = 0; i < PTRS_PER_PGD; i++) { 145 for (i = 0; i < PTRS_PER_PGD; i++) {
@@ -125,6 +158,7 @@ void __init mem_init(void)
125 codepages << (PAGE_SHIFT-10), 158 codepages << (PAGE_SHIFT-10),
126 datapages << (PAGE_SHIFT-10), 159 datapages << (PAGE_SHIFT-10),
127 initpages << (PAGE_SHIFT-10)); 160 initpages << (PAGE_SHIFT-10));
161 print_memmap();
128} 162}
129 163
130#ifdef CONFIG_BLK_DEV_INITRD 164#ifdef CONFIG_BLK_DEV_INITRD
diff --git a/arch/m68k/mm/kmap.c b/arch/m68k/mm/kmap.c
index 69345849454b..1cc2bed4c3dd 100644
--- a/arch/m68k/mm/kmap.c
+++ b/arch/m68k/mm/kmap.c
@@ -171,7 +171,8 @@ void __iomem *__ioremap(unsigned long physaddr, unsigned long size, int cachefla
171 break; 171 break;
172 } 172 }
173 } else { 173 } else {
174 physaddr |= (_PAGE_PRESENT | _PAGE_ACCESSED | _PAGE_DIRTY); 174 physaddr |= (_PAGE_PRESENT | _PAGE_ACCESSED |
175 _PAGE_DIRTY | _PAGE_READWRITE);
175 switch (cacheflag) { 176 switch (cacheflag) {
176 case IOMAP_NOCACHE_SER: 177 case IOMAP_NOCACHE_SER:
177 case IOMAP_NOCACHE_NONSER: 178 case IOMAP_NOCACHE_NONSER:
diff --git a/arch/m68k/mm/mcfmmu.c b/arch/m68k/mm/mcfmmu.c
new file mode 100644
index 000000000000..babd5a97cdcb
--- /dev/null
+++ b/arch/m68k/mm/mcfmmu.c
@@ -0,0 +1,198 @@
1/*
2 * Based upon linux/arch/m68k/mm/sun3mmu.c
3 * Based upon linux/arch/ppc/mm/mmu_context.c
4 *
5 * Implementations of mm routines specific to the Coldfire MMU.
6 *
7 * Copyright (c) 2008 Freescale Semiconductor, Inc.
8 */
9
10#include <linux/kernel.h>
11#include <linux/types.h>
12#include <linux/mm.h>
13#include <linux/init.h>
14#include <linux/string.h>
15#include <linux/bootmem.h>
16
17#include <asm/setup.h>
18#include <asm/page.h>
19#include <asm/pgtable.h>
20#include <asm/mmu_context.h>
21#include <asm/mcf_pgalloc.h>
22#include <asm/tlbflush.h>
23
24#define KMAPAREA(x) ((x >= VMALLOC_START) && (x < KMAP_END))
25
26mm_context_t next_mmu_context;
27unsigned long context_map[LAST_CONTEXT / BITS_PER_LONG + 1];
28atomic_t nr_free_contexts;
29struct mm_struct *context_mm[LAST_CONTEXT+1];
30extern unsigned long num_pages;
31
32void free_initmem(void)
33{
34}
35
36/*
37 * ColdFire paging_init derived from sun3.
38 */
39void __init paging_init(void)
40{
41 pgd_t *pg_dir;
42 pte_t *pg_table;
43 unsigned long address, size;
44 unsigned long next_pgtable, bootmem_end;
45 unsigned long zones_size[MAX_NR_ZONES];
46 enum zone_type zone;
47 int i;
48
49 empty_zero_page = (void *) alloc_bootmem_pages(PAGE_SIZE);
50 memset((void *) empty_zero_page, 0, PAGE_SIZE);
51
52 pg_dir = swapper_pg_dir;
53 memset(swapper_pg_dir, 0, sizeof(swapper_pg_dir));
54
55 size = num_pages * sizeof(pte_t);
56 size = (size + PAGE_SIZE) & ~(PAGE_SIZE-1);
57 next_pgtable = (unsigned long) alloc_bootmem_pages(size);
58
59 bootmem_end = (next_pgtable + size + PAGE_SIZE) & PAGE_MASK;
60 pg_dir += PAGE_OFFSET >> PGDIR_SHIFT;
61
62 address = PAGE_OFFSET;
63 while (address < (unsigned long)high_memory) {
64 pg_table = (pte_t *) next_pgtable;
65 next_pgtable += PTRS_PER_PTE * sizeof(pte_t);
66 pgd_val(*pg_dir) = (unsigned long) pg_table;
67 pg_dir++;
68
69 /* now change pg_table to kernel virtual addresses */
70 for (i = 0; i < PTRS_PER_PTE; ++i, ++pg_table) {
71 pte_t pte = pfn_pte(virt_to_pfn(address), PAGE_INIT);
72 if (address >= (unsigned long) high_memory)
73 pte_val(pte) = 0;
74
75 set_pte(pg_table, pte);
76 address += PAGE_SIZE;
77 }
78 }
79
80 current->mm = NULL;
81
82 for (zone = 0; zone < MAX_NR_ZONES; zone++)
83 zones_size[zone] = 0x0;
84 zones_size[ZONE_DMA] = num_pages;
85 free_area_init(zones_size);
86}
87
88int cf_tlb_miss(struct pt_regs *regs, int write, int dtlb, int extension_word)
89{
90 unsigned long flags, mmuar;
91 struct mm_struct *mm;
92 pgd_t *pgd;
93 pmd_t *pmd;
94 pte_t *pte;
95 int asid;
96
97 local_irq_save(flags);
98
99 mmuar = (dtlb) ? mmu_read(MMUAR) :
100 regs->pc + (extension_word * sizeof(long));
101
102 mm = (!user_mode(regs) && KMAPAREA(mmuar)) ? &init_mm : current->mm;
103 if (!mm) {
104 local_irq_restore(flags);
105 return -1;
106 }
107
108 pgd = pgd_offset(mm, mmuar);
109 if (pgd_none(*pgd)) {
110 local_irq_restore(flags);
111 return -1;
112 }
113
114 pmd = pmd_offset(pgd, mmuar);
115 if (pmd_none(*pmd)) {
116 local_irq_restore(flags);
117 return -1;
118 }
119
120 pte = (KMAPAREA(mmuar)) ? pte_offset_kernel(pmd, mmuar)
121 : pte_offset_map(pmd, mmuar);
122 if (pte_none(*pte) || !pte_present(*pte)) {
123 local_irq_restore(flags);
124 return -1;
125 }
126
127 if (write) {
128 if (!pte_write(*pte)) {
129 local_irq_restore(flags);
130 return -1;
131 }
132 set_pte(pte, pte_mkdirty(*pte));
133 }
134
135 set_pte(pte, pte_mkyoung(*pte));
136 asid = mm->context & 0xff;
137 if (!pte_dirty(*pte) && !KMAPAREA(mmuar))
138 set_pte(pte, pte_wrprotect(*pte));
139
140 mmu_write(MMUTR, (mmuar & PAGE_MASK) | (asid << MMUTR_IDN) |
141 (((int)(pte->pte) & (int)CF_PAGE_MMUTR_MASK)
142 >> CF_PAGE_MMUTR_SHIFT) | MMUTR_V);
143
144 mmu_write(MMUDR, (pte_val(*pte) & PAGE_MASK) |
145 ((pte->pte) & CF_PAGE_MMUDR_MASK) | MMUDR_SZ_8KB | MMUDR_X);
146
147 if (dtlb)
148 mmu_write(MMUOR, MMUOR_ACC | MMUOR_UAA);
149 else
150 mmu_write(MMUOR, MMUOR_ITLB | MMUOR_ACC | MMUOR_UAA);
151
152 local_irq_restore(flags);
153 return 0;
154}
155
156/*
157 * Initialize the context management stuff.
158 * The following was taken from arch/ppc/mmu_context.c
159 */
160void __init mmu_context_init(void)
161{
162 /*
163 * Some processors have too few contexts to reserve one for
164 * init_mm, and require using context 0 for a normal task.
165 * Other processors reserve the use of context zero for the kernel.
166 * This code assumes FIRST_CONTEXT < 32.
167 */
168 context_map[0] = (1 << FIRST_CONTEXT) - 1;
169 next_mmu_context = FIRST_CONTEXT;
170 atomic_set(&nr_free_contexts, LAST_CONTEXT - FIRST_CONTEXT + 1);
171}
172
173/*
174 * Steal a context from a task that has one at the moment.
175 * This is only used on 8xx and 4xx and we presently assume that
176 * they don't do SMP. If they do then thicfpgalloc.hs will have to check
177 * whether the MM we steal is in use.
178 * We also assume that this is only used on systems that don't
179 * use an MMU hash table - this is true for 8xx and 4xx.
180 * This isn't an LRU system, it just frees up each context in
181 * turn (sort-of pseudo-random replacement :). This would be the
182 * place to implement an LRU scheme if anyone was motivated to do it.
183 * -- paulus
184 */
185void steal_context(void)
186{
187 struct mm_struct *mm;
188 /*
189 * free up context `next_mmu_context'
190 * if we shouldn't free context 0, don't...
191 */
192 if (next_mmu_context < FIRST_CONTEXT)
193 next_mmu_context = FIRST_CONTEXT;
194 mm = context_mm[next_mmu_context];
195 flush_tlb_mm(mm);
196 destroy_context(mm);
197}
198
diff --git a/arch/m68k/mm/memory.c b/arch/m68k/mm/memory.c
index 34c77ce24fba..a5dbb74fe1de 100644
--- a/arch/m68k/mm/memory.c
+++ b/arch/m68k/mm/memory.c
@@ -203,7 +203,9 @@ static inline void pushcl040(unsigned long paddr)
203 203
204void cache_clear (unsigned long paddr, int len) 204void cache_clear (unsigned long paddr, int len)
205{ 205{
206 if (CPU_IS_040_OR_060) { 206 if (CPU_IS_COLDFIRE) {
207 flush_cf_bcache(0, DCACHE_MAX_ADDR);
208 } else if (CPU_IS_040_OR_060) {
207 int tmp; 209 int tmp;
208 210
209 /* 211 /*
@@ -250,7 +252,9 @@ EXPORT_SYMBOL(cache_clear);
250 252
251void cache_push (unsigned long paddr, int len) 253void cache_push (unsigned long paddr, int len)
252{ 254{
253 if (CPU_IS_040_OR_060) { 255 if (CPU_IS_COLDFIRE) {
256 flush_cf_bcache(0, DCACHE_MAX_ADDR);
257 } else if (CPU_IS_040_OR_060) {
254 int tmp = PAGE_SIZE; 258 int tmp = PAGE_SIZE;
255 259
256 /* 260 /*
diff --git a/arch/m68k/platform/54xx/config.c b/arch/m68k/platform/54xx/config.c
index 78130984db95..ee043540bfa2 100644
--- a/arch/m68k/platform/54xx/config.c
+++ b/arch/m68k/platform/54xx/config.c
@@ -13,11 +13,17 @@
13#include <linux/init.h> 13#include <linux/init.h>
14#include <linux/interrupt.h> 14#include <linux/interrupt.h>
15#include <linux/io.h> 15#include <linux/io.h>
16#include <linux/mm.h>
17#include <linux/bootmem.h>
18#include <asm/pgalloc.h>
16#include <asm/machdep.h> 19#include <asm/machdep.h>
17#include <asm/coldfire.h> 20#include <asm/coldfire.h>
18#include <asm/m54xxsim.h> 21#include <asm/m54xxsim.h>
19#include <asm/mcfuart.h> 22#include <asm/mcfuart.h>
20#include <asm/m54xxgpt.h> 23#include <asm/m54xxgpt.h>
24#ifdef CONFIG_MMU
25#include <asm/mmu_context.h>
26#endif
21 27
22/***************************************************************************/ 28/***************************************************************************/
23 29
@@ -95,8 +101,49 @@ static void mcf54xx_reset(void)
95 101
96/***************************************************************************/ 102/***************************************************************************/
97 103
104#ifdef CONFIG_MMU
105
106unsigned long num_pages;
107
108static void __init mcf54xx_bootmem_alloc(void)
109{
110 unsigned long start_pfn;
111 unsigned long memstart;
112
113 /* _rambase and _ramend will be naturally page aligned */
114 m68k_memory[0].addr = _rambase;
115 m68k_memory[0].size = _ramend - _rambase;
116
117 /* compute total pages in system */
118 num_pages = (_ramend - _rambase) >> PAGE_SHIFT;
119
120 /* page numbers */
121 memstart = PAGE_ALIGN(_ramstart);
122 min_low_pfn = _rambase >> PAGE_SHIFT;
123 start_pfn = memstart >> PAGE_SHIFT;
124 max_low_pfn = _ramend >> PAGE_SHIFT;
125 high_memory = (void *)_ramend;
126
127 m68k_virt_to_node_shift = fls(_ramend - _rambase - 1) - 6;
128 module_fixup(NULL, __start_fixup, __stop_fixup);
129
130 /* setup bootmem data */
131 m68k_setup_node(0);
132 memstart += init_bootmem_node(NODE_DATA(0), start_pfn,
133 min_low_pfn, max_low_pfn);
134 free_bootmem_node(NODE_DATA(0), memstart, _ramend - memstart);
135}
136
137#endif /* CONFIG_MMU */
138
139/***************************************************************************/
140
98void __init config_BSP(char *commandp, int size) 141void __init config_BSP(char *commandp, int size)
99{ 142{
143#ifdef CONFIG_MMU
144 mcf54xx_bootmem_alloc();
145 mmu_context_init();
146#endif
100 mach_reset = mcf54xx_reset; 147 mach_reset = mcf54xx_reset;
101 m54xx_uarts_init(); 148 m54xx_uarts_init();
102} 149}
diff --git a/arch/m68k/platform/68328/Makefile b/arch/m68k/platform/68328/Makefile
index e4dfd8fde068..ee61bf84d4a0 100644
--- a/arch/m68k/platform/68328/Makefile
+++ b/arch/m68k/platform/68328/Makefile
@@ -14,12 +14,8 @@ obj-$(CONFIG_M68328) += config.o
14obj-$(CONFIG_ROM) += romvec.o 14obj-$(CONFIG_ROM) += romvec.o
15 15
16extra-y := head.o 16extra-y := head.o
17extra-$(CONFIG_M68328) += bootlogo.rh head.o
18
19$(obj)/bootlogo.rh: $(src)/bootlogo.h
20 perl $(src)/bootlogo.pl < $(src)/bootlogo.h > $(obj)/bootlogo.rh
21 17
22$(obj)/head.o: $(obj)/$(head-y) 18$(obj)/head.o: $(obj)/$(head-y)
23 ln -sf $(head-y) $(obj)/head.o 19 ln -sf $(head-y) $(obj)/head.o
24 20
25clean-files := $(obj)/bootlogo.rh $(obj)/head.o $(head-y) 21clean-files := $(obj)/head.o $(head-y)
diff --git a/arch/m68k/platform/68328/bootlogo.h b/arch/m68k/platform/68328/bootlogo.h
index 67bc2c17386e..b896c933fafc 100644
--- a/arch/m68k/platform/68328/bootlogo.h
+++ b/arch/m68k/platform/68328/bootlogo.h
@@ -1,6 +1,6 @@
1#define bootlogo_width 160 1#define bootlogo_width 160
2#define bootlogo_height 160 2#define bootlogo_height 160
3static unsigned char bootlogo_bits[] = { 3unsigned char __attribute__ ((aligned(16))) bootlogo_bits[] = {
4 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0x01, 0x00, 0x00, 0x00, 4 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0x01, 0x00, 0x00, 0x00,
5 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 5 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
6 0x00, 0x00, 0x40, 0x55, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 6 0x00, 0x00, 0x40, 0x55, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
diff --git a/arch/m68k/platform/68328/bootlogo.pl b/arch/m68k/platform/68328/bootlogo.pl
deleted file mode 100644
index b04ae3f50da5..000000000000
--- a/arch/m68k/platform/68328/bootlogo.pl
+++ /dev/null
@@ -1,10 +0,0 @@
1
2$_ = join("", <>);
3
4s/(0x[0-9a-f]{2})/sprintf("0x%.2x",ord(pack("b8",unpack("B8",chr(hex($1))))))/gei;
5
6s/^ / .byte /gm;
7s/[,};]+$//gm;
8s/^static.*//gm;
9
10print $_;
diff --git a/arch/m68k/platform/68328/config.c b/arch/m68k/platform/68328/config.c
index a7bd21deb00f..d70bf2623db1 100644
--- a/arch/m68k/platform/68328/config.c
+++ b/arch/m68k/platform/68328/config.c
@@ -20,6 +20,9 @@
20#include <asm/system.h> 20#include <asm/system.h>
21#include <asm/machdep.h> 21#include <asm/machdep.h>
22#include <asm/MC68328.h> 22#include <asm/MC68328.h>
23#if defined(CONFIG_PILOT) || defined(CONFIG_INIT_LCD)
24#include "bootlogo.h"
25#endif
23 26
24/***************************************************************************/ 27/***************************************************************************/
25 28
diff --git a/arch/m68k/platform/68328/head-pilot.S b/arch/m68k/platform/68328/head-pilot.S
index aecff532b343..2ebfd6420818 100644
--- a/arch/m68k/platform/68328/head-pilot.S
+++ b/arch/m68k/platform/68328/head-pilot.S
@@ -24,19 +24,7 @@
24.global _ramstart 24.global _ramstart
25.global _ramend 25.global _ramend
26 26
27.global penguin_bits 27.global bootlogo_bits
28
29#ifdef CONFIG_PILOT
30
31#define IMR 0xFFFFF304
32
33 .data
34 .align 16
35
36penguin_bits:
37#include "bootlogo.rh"
38
39#endif
40 28
41/*****************************************************************************/ 29/*****************************************************************************/
42 30
@@ -185,9 +173,6 @@ L3:
185 moveq #79, %d7 173 moveq #79, %d7
186 movel %d0, _ramend 174 movel %d0, _ramend
187 175
188 movel %a3, %d0
189 movel %d0, rom_length
190
191 pea 0 176 pea 0
192 pea env 177 pea env
193 pea %sp@(4) 178 pea %sp@(4)
@@ -196,7 +181,7 @@ L3:
196 DBG_PUTC('H') 181 DBG_PUTC('H')
197 182
198#ifdef CONFIG_PILOT 183#ifdef CONFIG_PILOT
199 movel #penguin_bits, 0xFFFFFA00 184 movel #bootlogo_bits, 0xFFFFFA00
200 moveb #10, 0xFFFFFA05 185 moveb #10, 0xFFFFFA05
201 movew #160, 0xFFFFFA08 186 movew #160, 0xFFFFFA08
202 movew #160, 0xFFFFFA0A 187 movew #160, 0xFFFFFA0A
diff --git a/arch/m68k/platform/68328/head-rom.S b/arch/m68k/platform/68328/head-rom.S
index 6ec77d3ea0b3..a5ff96d0295f 100644
--- a/arch/m68k/platform/68328/head-rom.S
+++ b/arch/m68k/platform/68328/head-rom.S
@@ -8,7 +8,7 @@
8 .global _ramend 8 .global _ramend
9 9
10#ifdef CONFIG_INIT_LCD 10#ifdef CONFIG_INIT_LCD
11 .global splash_bits 11 .global bootlogo_bits
12#endif 12#endif
13 13
14 .data 14 .data
@@ -29,16 +29,11 @@ _ramend:
29 29
30#define RAMEND (CONFIG_RAMBASE + CONFIG_RAMSIZE) 30#define RAMEND (CONFIG_RAMBASE + CONFIG_RAMSIZE)
31 31
32#ifdef CONFIG_INIT_LCD
33splash_bits:
34#include "bootlogo.rh"
35#endif
36
37 .text 32 .text
38_start: 33_start:
39_stext: movew #0x2700,%sr 34_stext: movew #0x2700,%sr
40#ifdef CONFIG_INIT_LCD 35#ifdef CONFIG_INIT_LCD
41 movel #splash_bits, 0xfffffA00 /* LSSA */ 36 movel #bootlogo_bits, 0xfffffA00 /* LSSA */
42 moveb #0x28, 0xfffffA05 /* LVPW */ 37 moveb #0x28, 0xfffffA05 /* LVPW */
43 movew #0x280, 0xFFFFFa08 /* LXMAX */ 38 movew #0x280, 0xFFFFFa08 /* LXMAX */
44 movew #0x1df, 0xFFFFFa0a /* LYMAX */ 39 movew #0x1df, 0xFFFFFa0a /* LYMAX */
diff --git a/arch/m68k/platform/coldfire/entry.S b/arch/m68k/platform/coldfire/entry.S
index 3157461a8d1d..863889fc31c9 100644
--- a/arch/m68k/platform/coldfire/entry.S
+++ b/arch/m68k/platform/coldfire/entry.S
@@ -54,7 +54,6 @@ sw_usp:
54.globl ret_from_signal 54.globl ret_from_signal
55.globl sys_call_table 55.globl sys_call_table
56.globl inthandler 56.globl inthandler
57.globl fasthandler
58 57
59enosys: 58enosys:
60 mov.l #sys_ni_syscall,%d3 59 mov.l #sys_ni_syscall,%d3
@@ -63,6 +62,7 @@ enosys:
63ENTRY(system_call) 62ENTRY(system_call)
64 SAVE_ALL_SYS 63 SAVE_ALL_SYS
65 move #0x2000,%sr /* enable intrs again */ 64 move #0x2000,%sr /* enable intrs again */
65 GET_CURRENT(%d2)
66 66
67 cmpl #NR_syscalls,%d0 67 cmpl #NR_syscalls,%d0
68 jcc enosys 68 jcc enosys
@@ -166,6 +166,7 @@ Lsignal_return:
166 */ 166 */
167ENTRY(inthandler) 167ENTRY(inthandler)
168 SAVE_ALL_INT 168 SAVE_ALL_INT
169 GET_CURRENT(%d2)
169 170
170 movew %sp@(PT_OFF_FORMATVEC),%d0 /* put exception # in d0 */ 171 movew %sp@(PT_OFF_FORMATVEC),%d0 /* put exception # in d0 */
171 andl #0x03fc,%d0 /* mask out vector only */ 172 andl #0x03fc,%d0 /* mask out vector only */
@@ -191,7 +192,9 @@ ENTRY(resume)
191 movel %sp,%a0@(TASK_THREAD+THREAD_KSP) /* save kernel stack pointer */ 192 movel %sp,%a0@(TASK_THREAD+THREAD_KSP) /* save kernel stack pointer */
192 RDUSP /* movel %usp,%a3 */ 193 RDUSP /* movel %usp,%a3 */
193 movel %a3,%a0@(TASK_THREAD+THREAD_USP) /* save thread user stack */ 194 movel %a3,%a0@(TASK_THREAD+THREAD_USP) /* save thread user stack */
194 195#ifdef CONFIG_MMU
196 movel %a1,%a2 /* set new current */
197#endif
195 movel %a1@(TASK_THREAD+THREAD_USP),%a3 /* restore thread user stack */ 198 movel %a1@(TASK_THREAD+THREAD_USP),%a3 /* restore thread user stack */
196 WRUSP /* movel %a3,%usp */ 199 WRUSP /* movel %a3,%usp */
197 movel %a1@(TASK_THREAD+THREAD_KSP),%sp /* restore new kernel stack */ 200 movel %a1@(TASK_THREAD+THREAD_KSP),%sp /* restore new kernel stack */
diff --git a/arch/m68k/platform/coldfire/head.S b/arch/m68k/platform/coldfire/head.S
index c33483824a2e..38f04a3f6207 100644
--- a/arch/m68k/platform/coldfire/head.S
+++ b/arch/m68k/platform/coldfire/head.S
@@ -3,7 +3,7 @@
3/* 3/*
4 * head.S -- common startup code for ColdFire CPUs. 4 * head.S -- common startup code for ColdFire CPUs.
5 * 5 *
6 * (C) Copyright 1999-2010, Greg Ungerer <gerg@snapgear.com>. 6 * (C) Copyright 1999-2011, Greg Ungerer <gerg@snapgear.com>.
7 */ 7 */
8 8
9/*****************************************************************************/ 9/*****************************************************************************/
@@ -13,6 +13,7 @@
13#include <asm/asm-offsets.h> 13#include <asm/asm-offsets.h>
14#include <asm/coldfire.h> 14#include <asm/coldfire.h>
15#include <asm/mcfsim.h> 15#include <asm/mcfsim.h>
16#include <asm/mcfmmu.h>
16#include <asm/thread_info.h> 17#include <asm/thread_info.h>
17 18
18/*****************************************************************************/ 19/*****************************************************************************/
@@ -135,6 +136,14 @@ _init_sp:
135 136
136__HEAD 137__HEAD
137 138
139#ifdef CONFIG_MMU
140_start0:
141 jmp _start
142.global kernel_pg_dir
143.equ kernel_pg_dir,_start0
144.equ .,_start0+0x1000
145#endif
146
138/* 147/*
139 * This is the codes first entry point. This is where it all 148 * This is the codes first entry point. This is where it all
140 * begins... 149 * begins...
@@ -143,6 +152,9 @@ __HEAD
143_start: 152_start:
144 nop /* filler */ 153 nop /* filler */
145 movew #0x2700, %sr /* no interrupts */ 154 movew #0x2700, %sr /* no interrupts */
155 movel #CACHE_INIT,%d0 /* disable cache */
156 movec %d0,%CACR
157 nop
146#if defined(CONFIG_UBOOT) 158#if defined(CONFIG_UBOOT)
147 movel %sp,_init_sp /* save initial stack pointer */ 159 movel %sp,_init_sp /* save initial stack pointer */
148#endif 160#endif
@@ -176,9 +188,6 @@ _start:
176 * it is very similar. Define the exact settings in the headers 188 * it is very similar. Define the exact settings in the headers
177 * then the code here is the same for all. 189 * then the code here is the same for all.
178 */ 190 */
179 movel #CACHE_INIT,%d0 /* invalidate whole cache */
180 movec %d0,%CACR
181 nop
182 movel #ACR0_MODE,%d0 /* set RAM region for caching */ 191 movel #ACR0_MODE,%d0 /* set RAM region for caching */
183 movec %d0,%ACR0 192 movec %d0,%ACR0
184 movel #ACR1_MODE,%d0 /* anything else to cache? */ 193 movel #ACR1_MODE,%d0 /* anything else to cache? */
@@ -193,6 +202,26 @@ _start:
193 movec %d0,%CACR 202 movec %d0,%CACR
194 nop 203 nop
195 204
205#ifdef CONFIG_MMU
206 /*
207 * Identity mapping for the kernel region.
208 */
209 movel #(MMUBASE+1),%d0 /* enable MMUBAR registers */
210 movec %d0,%MMUBAR
211 movel #MMUOR_CA,%d0 /* clear TLB entries */
212 movel %d0,MMUOR
213 movel #0,%d0 /* set ASID to 0 */
214 movec %d0,%asid
215
216 movel #MMUCR_EN,%d0 /* Enable the identity map */
217 movel %d0,MMUCR
218 nop /* sync i-pipeline */
219
220 movel #_vstart,%a0 /* jump to "virtual" space */
221 jmp %a0@
222_vstart:
223#endif /* CONFIG_MMU */
224
196#ifdef CONFIG_ROMFS_FS 225#ifdef CONFIG_ROMFS_FS
197 /* 226 /*
198 * Move ROM filesystem above bss :-) 227 * Move ROM filesystem above bss :-)
@@ -238,6 +267,22 @@ _clear_bss:
238 lea init_thread_union,%a0 267 lea init_thread_union,%a0
239 lea THREAD_SIZE(%a0),%sp 268 lea THREAD_SIZE(%a0),%sp
240 269
270#ifdef CONFIG_MMU
271.global m68k_cputype
272.global m68k_mmutype
273.global m68k_fputype
274.global m68k_machtype
275 movel #CPU_COLDFIRE,%d0
276 movel %d0,m68k_cputype /* Mark us as a ColdFire */
277 movel #MMU_COLDFIRE,%d0
278 movel %d0,m68k_mmutype
279 movel #FPU_COLDFIRE,%d0
280 movel %d0,m68k_fputype
281 movel #MACH_M54XX,%d0
282 movel %d0,m68k_machtype /* Mark us as a 54xx machine */
283 lea init_task,%a2 /* Set "current" init task */
284#endif
285
241 /* 286 /*
242 * Assember start up done, start code proper. 287 * Assember start up done, start code proper.
243 */ 288 */
diff --git a/arch/m68k/platform/coldfire/sltimers.c b/arch/m68k/platform/coldfire/sltimers.c
index b7f822b552bb..54e1452f853a 100644
--- a/arch/m68k/platform/coldfire/sltimers.c
+++ b/arch/m68k/platform/coldfire/sltimers.c
@@ -98,16 +98,19 @@ static struct irqaction mcfslt_timer_irq = {
98static cycle_t mcfslt_read_clk(struct clocksource *cs) 98static cycle_t mcfslt_read_clk(struct clocksource *cs)
99{ 99{
100 unsigned long flags; 100 unsigned long flags;
101 u32 cycles; 101 u32 cycles, scnt;
102 u16 scnt;
103 102
104 local_irq_save(flags); 103 local_irq_save(flags);
105 scnt = __raw_readl(TA(MCFSLT_SCNT)); 104 scnt = __raw_readl(TA(MCFSLT_SCNT));
106 cycles = mcfslt_cnt; 105 cycles = mcfslt_cnt;
106 if (__raw_readl(TA(MCFSLT_SSR)) & MCFSLT_SSR_TE) {
107 cycles += mcfslt_cycles_per_jiffy;
108 scnt = __raw_readl(TA(MCFSLT_SCNT));
109 }
107 local_irq_restore(flags); 110 local_irq_restore(flags);
108 111
109 /* subtract because slice timers count down */ 112 /* subtract because slice timers count down */
110 return cycles - scnt; 113 return cycles + ((mcfslt_cycles_per_jiffy - 1) - scnt);
111} 114}
112 115
113static struct clocksource mcfslt_clk = { 116static struct clocksource mcfslt_clk = {
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-14 04:05:36 -0500