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-rw-r--r--arch/powerpc/Makefile1
-rw-r--r--arch/powerpc/configs/pseries_le_defconfig352
-rw-r--r--arch/powerpc/include/asm/elf.h4
-rw-r--r--arch/powerpc/include/asm/hvcall.h2
-rw-r--r--arch/powerpc/include/asm/plpar_wrappers.h26
-rw-r--r--arch/powerpc/include/asm/thread_info.h9
-rw-r--r--arch/powerpc/kernel/process.c50
-rw-r--r--arch/powerpc/kernel/signal_64.c25
-rw-r--r--arch/powerpc/kernel/vdso64/sigtramp.S16
-rw-r--r--arch/powerpc/platforms/Kconfig.cputype11
-rw-r--r--arch/powerpc/platforms/pseries/eeh_pseries.c21
-rw-r--r--arch/powerpc/platforms/pseries/lpar.c17
-rw-r--r--arch/powerpc/platforms/pseries/setup.c42
13 files changed, 542 insertions, 34 deletions
diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile
index 607acf54a425..8a2463670a5b 100644
--- a/arch/powerpc/Makefile
+++ b/arch/powerpc/Makefile
@@ -111,6 +111,7 @@ endif
111endif 111endif
112 112
113CFLAGS-$(CONFIG_PPC64) := -mtraceback=no -mcall-aixdesc 113CFLAGS-$(CONFIG_PPC64) := -mtraceback=no -mcall-aixdesc
114CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mabi=elfv1)
114CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mcmodel=medium,-mminimal-toc) 115CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mcmodel=medium,-mminimal-toc)
115CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mno-pointers-to-nested-functions) 116CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mno-pointers-to-nested-functions)
116CFLAGS-$(CONFIG_PPC32) := -ffixed-r2 $(MULTIPLEWORD) 117CFLAGS-$(CONFIG_PPC32) := -ffixed-r2 $(MULTIPLEWORD)
diff --git a/arch/powerpc/configs/pseries_le_defconfig b/arch/powerpc/configs/pseries_le_defconfig
new file mode 100644
index 000000000000..62771e0adb7c
--- /dev/null
+++ b/arch/powerpc/configs/pseries_le_defconfig
@@ -0,0 +1,352 @@
1CONFIG_PPC64=y
2CONFIG_ALTIVEC=y
3CONFIG_VSX=y
4CONFIG_SMP=y
5CONFIG_NR_CPUS=2048
6CONFIG_CPU_LITTLE_ENDIAN=y
7CONFIG_SYSVIPC=y
8CONFIG_POSIX_MQUEUE=y
9CONFIG_AUDIT=y
10CONFIG_AUDITSYSCALL=y
11CONFIG_IRQ_DOMAIN_DEBUG=y
12CONFIG_NO_HZ=y
13CONFIG_HIGH_RES_TIMERS=y
14CONFIG_TASKSTATS=y
15CONFIG_TASK_DELAY_ACCT=y
16CONFIG_TASK_XACCT=y
17CONFIG_TASK_IO_ACCOUNTING=y
18CONFIG_IKCONFIG=y
19CONFIG_IKCONFIG_PROC=y
20CONFIG_CGROUPS=y
21CONFIG_CGROUP_FREEZER=y
22CONFIG_CGROUP_DEVICE=y
23CONFIG_CPUSETS=y
24CONFIG_CGROUP_CPUACCT=y
25CONFIG_BLK_DEV_INITRD=y
26# CONFIG_COMPAT_BRK is not set
27CONFIG_PROFILING=y
28CONFIG_OPROFILE=y
29CONFIG_KPROBES=y
30CONFIG_JUMP_LABEL=y
31CONFIG_MODULES=y
32CONFIG_MODULE_UNLOAD=y
33CONFIG_MODVERSIONS=y
34CONFIG_MODULE_SRCVERSION_ALL=y
35CONFIG_PARTITION_ADVANCED=y
36CONFIG_PPC_SPLPAR=y
37CONFIG_SCANLOG=m
38CONFIG_PPC_SMLPAR=y
39CONFIG_DTL=y
40# CONFIG_PPC_PMAC is not set
41CONFIG_RTAS_FLASH=m
42CONFIG_IBMEBUS=y
43CONFIG_HZ_100=y
44CONFIG_BINFMT_MISC=m
45CONFIG_PPC_TRANSACTIONAL_MEM=y
46CONFIG_KEXEC=y
47CONFIG_IRQ_ALL_CPUS=y
48CONFIG_MEMORY_HOTPLUG=y
49CONFIG_MEMORY_HOTREMOVE=y
50CONFIG_CMA=y
51CONFIG_PPC_64K_PAGES=y
52CONFIG_PPC_SUBPAGE_PROT=y
53CONFIG_SCHED_SMT=y
54CONFIG_HOTPLUG_PCI=y
55CONFIG_HOTPLUG_PCI_RPA=m
56CONFIG_HOTPLUG_PCI_RPA_DLPAR=m
57CONFIG_PACKET=y
58CONFIG_UNIX=y
59CONFIG_XFRM_USER=m
60CONFIG_NET_KEY=m
61CONFIG_INET=y
62CONFIG_IP_MULTICAST=y
63CONFIG_NET_IPIP=y
64CONFIG_SYN_COOKIES=y
65CONFIG_INET_AH=m
66CONFIG_INET_ESP=m
67CONFIG_INET_IPCOMP=m
68# CONFIG_IPV6 is not set
69CONFIG_NETFILTER=y
70CONFIG_NF_CONNTRACK=m
71CONFIG_NF_CONNTRACK_EVENTS=y
72CONFIG_NF_CT_PROTO_UDPLITE=m
73CONFIG_NF_CONNTRACK_FTP=m
74CONFIG_NF_CONNTRACK_IRC=m
75CONFIG_NF_CONNTRACK_TFTP=m
76CONFIG_NF_CT_NETLINK=m
77CONFIG_NETFILTER_XT_TARGET_CLASSIFY=m
78CONFIG_NETFILTER_XT_TARGET_CONNMARK=m
79CONFIG_NETFILTER_XT_TARGET_MARK=m
80CONFIG_NETFILTER_XT_TARGET_NFLOG=m
81CONFIG_NETFILTER_XT_TARGET_NFQUEUE=m
82CONFIG_NETFILTER_XT_TARGET_TCPMSS=m
83CONFIG_NETFILTER_XT_MATCH_COMMENT=m
84CONFIG_NETFILTER_XT_MATCH_CONNBYTES=m
85CONFIG_NETFILTER_XT_MATCH_CONNLIMIT=m
86CONFIG_NETFILTER_XT_MATCH_CONNMARK=m
87CONFIG_NETFILTER_XT_MATCH_CONNTRACK=m
88CONFIG_NETFILTER_XT_MATCH_DCCP=m
89CONFIG_NETFILTER_XT_MATCH_DSCP=m
90CONFIG_NETFILTER_XT_MATCH_ESP=m
91CONFIG_NETFILTER_XT_MATCH_HASHLIMIT=m
92CONFIG_NETFILTER_XT_MATCH_HELPER=m
93CONFIG_NETFILTER_XT_MATCH_IPRANGE=m
94CONFIG_NETFILTER_XT_MATCH_LENGTH=m
95CONFIG_NETFILTER_XT_MATCH_LIMIT=m
96CONFIG_NETFILTER_XT_MATCH_MAC=m
97CONFIG_NETFILTER_XT_MATCH_MARK=m
98CONFIG_NETFILTER_XT_MATCH_MULTIPORT=m
99CONFIG_NETFILTER_XT_MATCH_OWNER=m
100CONFIG_NETFILTER_XT_MATCH_POLICY=m
101CONFIG_NETFILTER_XT_MATCH_PKTTYPE=m
102CONFIG_NETFILTER_XT_MATCH_QUOTA=m
103CONFIG_NETFILTER_XT_MATCH_RATEEST=m
104CONFIG_NETFILTER_XT_MATCH_REALM=m
105CONFIG_NETFILTER_XT_MATCH_RECENT=m
106CONFIG_NETFILTER_XT_MATCH_SCTP=m
107CONFIG_NETFILTER_XT_MATCH_STATE=m
108CONFIG_NETFILTER_XT_MATCH_STATISTIC=m
109CONFIG_NETFILTER_XT_MATCH_STRING=m
110CONFIG_NETFILTER_XT_MATCH_TCPMSS=m
111CONFIG_NETFILTER_XT_MATCH_TIME=m
112CONFIG_NETFILTER_XT_MATCH_U32=m
113CONFIG_NF_CONNTRACK_IPV4=m
114CONFIG_IP_NF_IPTABLES=m
115CONFIG_IP_NF_MATCH_AH=m
116CONFIG_IP_NF_MATCH_ECN=m
117CONFIG_IP_NF_MATCH_TTL=m
118CONFIG_IP_NF_FILTER=m
119CONFIG_IP_NF_TARGET_REJECT=m
120CONFIG_IP_NF_TARGET_ULOG=m
121CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
122CONFIG_DEVTMPFS=y
123CONFIG_DEVTMPFS_MOUNT=y
124CONFIG_PROC_DEVICETREE=y
125CONFIG_PARPORT=m
126CONFIG_PARPORT_PC=m
127CONFIG_BLK_DEV_FD=m
128CONFIG_BLK_DEV_LOOP=y
129CONFIG_BLK_DEV_NBD=m
130CONFIG_BLK_DEV_RAM=y
131CONFIG_BLK_DEV_RAM_SIZE=65536
132CONFIG_VIRTIO_BLK=m
133CONFIG_IDE=y
134CONFIG_BLK_DEV_IDECD=y
135CONFIG_BLK_DEV_GENERIC=y
136CONFIG_BLK_DEV_AMD74XX=y
137CONFIG_BLK_DEV_SD=y
138CONFIG_CHR_DEV_ST=y
139CONFIG_BLK_DEV_SR=y
140CONFIG_BLK_DEV_SR_VENDOR=y
141CONFIG_CHR_DEV_SG=y
142CONFIG_SCSI_MULTI_LUN=y
143CONFIG_SCSI_CONSTANTS=y
144CONFIG_SCSI_FC_ATTRS=y
145CONFIG_SCSI_CXGB3_ISCSI=m
146CONFIG_SCSI_CXGB4_ISCSI=m
147CONFIG_SCSI_BNX2_ISCSI=m
148CONFIG_BE2ISCSI=m
149CONFIG_SCSI_MPT2SAS=m
150CONFIG_SCSI_IBMVSCSI=y
151CONFIG_SCSI_IBMVFC=m
152CONFIG_SCSI_SYM53C8XX_2=y
153CONFIG_SCSI_SYM53C8XX_DMA_ADDRESSING_MODE=0
154CONFIG_SCSI_IPR=y
155CONFIG_SCSI_QLA_FC=m
156CONFIG_SCSI_QLA_ISCSI=m
157CONFIG_SCSI_LPFC=m
158CONFIG_SCSI_VIRTIO=m
159CONFIG_SCSI_DH=m
160CONFIG_SCSI_DH_RDAC=m
161CONFIG_SCSI_DH_ALUA=m
162CONFIG_ATA=y
163# CONFIG_ATA_SFF is not set
164CONFIG_MD=y
165CONFIG_BLK_DEV_MD=y
166CONFIG_MD_LINEAR=y
167CONFIG_MD_RAID0=y
168CONFIG_MD_RAID1=y
169CONFIG_MD_RAID10=m
170CONFIG_MD_RAID456=m
171CONFIG_MD_MULTIPATH=m
172CONFIG_MD_FAULTY=m
173CONFIG_BLK_DEV_DM=y
174CONFIG_DM_CRYPT=m
175CONFIG_DM_SNAPSHOT=m
176CONFIG_DM_MIRROR=m
177CONFIG_DM_ZERO=m
178CONFIG_DM_MULTIPATH=m
179CONFIG_DM_MULTIPATH_QL=m
180CONFIG_DM_MULTIPATH_ST=m
181CONFIG_DM_UEVENT=y
182CONFIG_BONDING=m
183CONFIG_DUMMY=m
184CONFIG_NETCONSOLE=y
185CONFIG_NETPOLL_TRAP=y
186CONFIG_TUN=m
187CONFIG_VIRTIO_NET=m
188CONFIG_VORTEX=y
189CONFIG_ACENIC=m
190CONFIG_ACENIC_OMIT_TIGON_I=y
191CONFIG_PCNET32=y
192CONFIG_TIGON3=y
193CONFIG_CHELSIO_T1=m
194CONFIG_BE2NET=m
195CONFIG_S2IO=m
196CONFIG_IBMVETH=y
197CONFIG_EHEA=y
198CONFIG_E100=y
199CONFIG_E1000=y
200CONFIG_E1000E=y
201CONFIG_IXGB=m
202CONFIG_IXGBE=m
203CONFIG_MLX4_EN=m
204CONFIG_MYRI10GE=m
205CONFIG_QLGE=m
206CONFIG_NETXEN_NIC=m
207CONFIG_PPP=m
208CONFIG_PPP_BSDCOMP=m
209CONFIG_PPP_DEFLATE=m
210CONFIG_PPPOE=m
211CONFIG_PPP_ASYNC=m
212CONFIG_PPP_SYNC_TTY=m
213# CONFIG_INPUT_MOUSEDEV_PSAUX is not set
214CONFIG_INPUT_EVDEV=m
215CONFIG_INPUT_MISC=y
216CONFIG_INPUT_PCSPKR=m
217# CONFIG_SERIO_SERPORT is not set
218CONFIG_SERIAL_8250=y
219CONFIG_SERIAL_8250_CONSOLE=y
220CONFIG_SERIAL_ICOM=m
221CONFIG_SERIAL_JSM=m
222CONFIG_HVC_CONSOLE=y
223CONFIG_HVC_RTAS=y
224CONFIG_HVCS=m
225CONFIG_VIRTIO_CONSOLE=m
226CONFIG_IBM_BSR=m
227CONFIG_GEN_RTC=y
228CONFIG_RAW_DRIVER=y
229CONFIG_MAX_RAW_DEVS=1024
230CONFIG_FB=y
231CONFIG_FIRMWARE_EDID=y
232CONFIG_FB_OF=y
233CONFIG_FB_MATROX=y
234CONFIG_FB_MATROX_MILLENIUM=y
235CONFIG_FB_MATROX_MYSTIQUE=y
236CONFIG_FB_MATROX_G=y
237CONFIG_FB_RADEON=y
238CONFIG_FB_IBM_GXT4500=y
239CONFIG_LCD_PLATFORM=m
240# CONFIG_VGA_CONSOLE is not set
241CONFIG_FRAMEBUFFER_CONSOLE=y
242CONFIG_LOGO=y
243CONFIG_HID_GYRATION=y
244CONFIG_HID_PANTHERLORD=y
245CONFIG_HID_PETALYNX=y
246CONFIG_HID_SAMSUNG=y
247CONFIG_HID_SUNPLUS=y
248CONFIG_USB_HIDDEV=y
249CONFIG_USB=y
250CONFIG_USB_MON=m
251CONFIG_USB_EHCI_HCD=y
252# CONFIG_USB_EHCI_HCD_PPC_OF is not set
253CONFIG_USB_OHCI_HCD=y
254CONFIG_USB_STORAGE=m
255CONFIG_INFINIBAND=m
256CONFIG_INFINIBAND_USER_MAD=m
257CONFIG_INFINIBAND_USER_ACCESS=m
258CONFIG_INFINIBAND_MTHCA=m
259CONFIG_INFINIBAND_EHCA=m
260CONFIG_INFINIBAND_CXGB3=m
261CONFIG_INFINIBAND_CXGB4=m
262CONFIG_MLX4_INFINIBAND=m
263CONFIG_INFINIBAND_IPOIB=m
264CONFIG_INFINIBAND_IPOIB_CM=y
265CONFIG_INFINIBAND_SRP=m
266CONFIG_INFINIBAND_ISER=m
267CONFIG_VIRTIO_PCI=m
268CONFIG_VIRTIO_BALLOON=m
269CONFIG_EXT2_FS=y
270CONFIG_EXT2_FS_XATTR=y
271CONFIG_EXT2_FS_POSIX_ACL=y
272CONFIG_EXT2_FS_SECURITY=y
273CONFIG_EXT2_FS_XIP=y
274CONFIG_EXT3_FS=y
275CONFIG_EXT3_FS_POSIX_ACL=y
276CONFIG_EXT3_FS_SECURITY=y
277CONFIG_EXT4_FS=y
278CONFIG_EXT4_FS_POSIX_ACL=y
279CONFIG_EXT4_FS_SECURITY=y
280CONFIG_REISERFS_FS=y
281CONFIG_REISERFS_FS_XATTR=y
282CONFIG_REISERFS_FS_POSIX_ACL=y
283CONFIG_REISERFS_FS_SECURITY=y
284CONFIG_JFS_FS=m
285CONFIG_JFS_POSIX_ACL=y
286CONFIG_JFS_SECURITY=y
287CONFIG_XFS_FS=m
288CONFIG_XFS_POSIX_ACL=y
289CONFIG_BTRFS_FS=m
290CONFIG_BTRFS_FS_POSIX_ACL=y
291CONFIG_NILFS2_FS=m
292CONFIG_AUTOFS4_FS=m
293CONFIG_FUSE_FS=m
294CONFIG_ISO9660_FS=y
295CONFIG_UDF_FS=m
296CONFIG_MSDOS_FS=y
297CONFIG_VFAT_FS=y
298CONFIG_PROC_KCORE=y
299CONFIG_TMPFS=y
300CONFIG_TMPFS_POSIX_ACL=y
301CONFIG_HUGETLBFS=y
302CONFIG_CRAMFS=m
303CONFIG_SQUASHFS=m
304CONFIG_SQUASHFS_XATTR=y
305CONFIG_SQUASHFS_LZO=y
306CONFIG_SQUASHFS_XZ=y
307CONFIG_PSTORE=y
308CONFIG_NFS_FS=y
309CONFIG_NFS_V3_ACL=y
310CONFIG_NFS_V4=y
311CONFIG_NFSD=m
312CONFIG_NFSD_V3_ACL=y
313CONFIG_NFSD_V4=y
314CONFIG_CIFS=m
315CONFIG_CIFS_XATTR=y
316CONFIG_CIFS_POSIX=y
317CONFIG_NLS_DEFAULT="utf8"
318CONFIG_NLS_CODEPAGE_437=y
319CONFIG_NLS_ASCII=y
320CONFIG_NLS_ISO8859_1=y
321CONFIG_NLS_UTF8=y
322CONFIG_CRC_T10DIF=y
323CONFIG_MAGIC_SYSRQ=y
324CONFIG_DEBUG_KERNEL=y
325CONFIG_DEBUG_STACK_USAGE=y
326CONFIG_DEBUG_STACKOVERFLOW=y
327CONFIG_LOCKUP_DETECTOR=y
328CONFIG_LATENCYTOP=y
329CONFIG_SCHED_TRACER=y
330CONFIG_BLK_DEV_IO_TRACE=y
331CONFIG_CODE_PATCHING_SELFTEST=y
332CONFIG_FTR_FIXUP_SELFTEST=y
333CONFIG_MSI_BITMAP_SELFTEST=y
334CONFIG_XMON=y
335CONFIG_CRYPTO_TEST=m
336CONFIG_CRYPTO_PCBC=m
337CONFIG_CRYPTO_HMAC=y
338CONFIG_CRYPTO_MICHAEL_MIC=m
339CONFIG_CRYPTO_TGR192=m
340CONFIG_CRYPTO_WP512=m
341CONFIG_CRYPTO_ANUBIS=m
342CONFIG_CRYPTO_BLOWFISH=m
343CONFIG_CRYPTO_CAST6=m
344CONFIG_CRYPTO_KHAZAD=m
345CONFIG_CRYPTO_SALSA20=m
346CONFIG_CRYPTO_SERPENT=m
347CONFIG_CRYPTO_TEA=m
348CONFIG_CRYPTO_TWOFISH=m
349CONFIG_CRYPTO_LZO=m
350# CONFIG_CRYPTO_ANSI_CPRNG is not set
351CONFIG_CRYPTO_DEV_NX=y
352CONFIG_CRYPTO_DEV_NX_ENCRYPT=m
diff --git a/arch/powerpc/include/asm/elf.h b/arch/powerpc/include/asm/elf.h
index cc0655a702a7..935b5e7a1436 100644
--- a/arch/powerpc/include/asm/elf.h
+++ b/arch/powerpc/include/asm/elf.h
@@ -31,6 +31,8 @@
31extern unsigned long randomize_et_dyn(unsigned long base); 31extern unsigned long randomize_et_dyn(unsigned long base);
32#define ELF_ET_DYN_BASE (randomize_et_dyn(0x20000000)) 32#define ELF_ET_DYN_BASE (randomize_et_dyn(0x20000000))
33 33
34#define ELF_CORE_EFLAGS (is_elf2_task() ? 2 : 0)
35
34/* 36/*
35 * Our registers are always unsigned longs, whether we're a 32 bit 37 * Our registers are always unsigned longs, whether we're a 32 bit
36 * process or 64 bit, on either a 64 bit or 32 bit kernel. 38 * process or 64 bit, on either a 64 bit or 32 bit kernel.
@@ -86,6 +88,8 @@ typedef elf_vrregset_t elf_fpxregset_t;
86#ifdef __powerpc64__ 88#ifdef __powerpc64__
87# define SET_PERSONALITY(ex) \ 89# define SET_PERSONALITY(ex) \
88do { \ 90do { \
91 if (((ex).e_flags & 0x3) == 2) \
92 set_thread_flag(TIF_ELF2ABI); \
89 if ((ex).e_ident[EI_CLASS] == ELFCLASS32) \ 93 if ((ex).e_ident[EI_CLASS] == ELFCLASS32) \
90 set_thread_flag(TIF_32BIT); \ 94 set_thread_flag(TIF_32BIT); \
91 else \ 95 else \
diff --git a/arch/powerpc/include/asm/hvcall.h b/arch/powerpc/include/asm/hvcall.h
index 0c7f2bfcf134..d8b600b3f058 100644
--- a/arch/powerpc/include/asm/hvcall.h
+++ b/arch/powerpc/include/asm/hvcall.h
@@ -403,6 +403,8 @@ static inline unsigned long cmo_get_page_size(void)
403extern long pSeries_enable_reloc_on_exc(void); 403extern long pSeries_enable_reloc_on_exc(void);
404extern long pSeries_disable_reloc_on_exc(void); 404extern long pSeries_disable_reloc_on_exc(void);
405 405
406extern long pseries_big_endian_exceptions(void);
407
406#else 408#else
407 409
408#define pSeries_enable_reloc_on_exc() do {} while (0) 410#define pSeries_enable_reloc_on_exc() do {} while (0)
diff --git a/arch/powerpc/include/asm/plpar_wrappers.h b/arch/powerpc/include/asm/plpar_wrappers.h
index a63b045e707c..12c32c5f533d 100644
--- a/arch/powerpc/include/asm/plpar_wrappers.h
+++ b/arch/powerpc/include/asm/plpar_wrappers.h
@@ -287,6 +287,32 @@ static inline long disable_reloc_on_exceptions(void) {
287 return plpar_set_mode(0, 3, 0, 0); 287 return plpar_set_mode(0, 3, 0, 0);
288} 288}
289 289
290/*
291 * Take exceptions in big endian mode on this partition
292 *
293 * Note: this call has a partition wide scope and can take a while to complete.
294 * If it returns H_LONG_BUSY_* it should be retried periodically until it
295 * returns H_SUCCESS.
296 */
297static inline long enable_big_endian_exceptions(void)
298{
299 /* mflags = 0: big endian exceptions */
300 return plpar_set_mode(0, 4, 0, 0);
301}
302
303/*
304 * Take exceptions in little endian mode on this partition
305 *
306 * Note: this call has a partition wide scope and can take a while to complete.
307 * If it returns H_LONG_BUSY_* it should be retried periodically until it
308 * returns H_SUCCESS.
309 */
310static inline long enable_little_endian_exceptions(void)
311{
312 /* mflags = 1: little endian exceptions */
313 return plpar_set_mode(1, 4, 0, 0);
314}
315
290static inline long plapr_set_ciabr(unsigned long ciabr) 316static inline long plapr_set_ciabr(unsigned long ciabr)
291{ 317{
292 return plpar_set_mode(0, 1, ciabr, 0); 318 return plpar_set_mode(0, 1, ciabr, 0);
diff --git a/arch/powerpc/include/asm/thread_info.h b/arch/powerpc/include/asm/thread_info.h
index 8fd6cf6dcee8..9854c564ac52 100644
--- a/arch/powerpc/include/asm/thread_info.h
+++ b/arch/powerpc/include/asm/thread_info.h
@@ -105,6 +105,9 @@ static inline struct thread_info *current_thread_info(void)
105#define TIF_EMULATE_STACK_STORE 16 /* Is an instruction emulation 105#define TIF_EMULATE_STACK_STORE 16 /* Is an instruction emulation
106 for stack store? */ 106 for stack store? */
107#define TIF_MEMDIE 17 /* is terminating due to OOM killer */ 107#define TIF_MEMDIE 17 /* is terminating due to OOM killer */
108#if defined(CONFIG_PPC64)
109#define TIF_ELF2ABI 18 /* function descriptors must die! */
110#endif
108 111
109/* as above, but as bit values */ 112/* as above, but as bit values */
110#define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE) 113#define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE)
@@ -183,6 +186,12 @@ static inline bool test_thread_local_flags(unsigned int flags)
183#define is_32bit_task() (1) 186#define is_32bit_task() (1)
184#endif 187#endif
185 188
189#if defined(CONFIG_PPC64)
190#define is_elf2_task() (test_thread_flag(TIF_ELF2ABI))
191#else
192#define is_elf2_task() (0)
193#endif
194
186#endif /* !__ASSEMBLY__ */ 195#endif /* !__ASSEMBLY__ */
187 196
188#endif /* __KERNEL__ */ 197#endif /* __KERNEL__ */
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index 75c2d1009985..0650e18169f8 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -1086,25 +1086,45 @@ void start_thread(struct pt_regs *regs, unsigned long start, unsigned long sp)
1086 regs->msr = MSR_USER; 1086 regs->msr = MSR_USER;
1087#else 1087#else
1088 if (!is_32bit_task()) { 1088 if (!is_32bit_task()) {
1089 unsigned long entry, toc; 1089 unsigned long entry;
1090 1090
1091 /* start is a relocated pointer to the function descriptor for 1091 if (is_elf2_task()) {
1092 * the elf _start routine. The first entry in the function 1092 /* Look ma, no function descriptors! */
1093 * descriptor is the entry address of _start and the second 1093 entry = start;
1094 * entry is the TOC value we need to use.
1095 */
1096 __get_user(entry, (unsigned long __user *)start);
1097 __get_user(toc, (unsigned long __user *)start+1);
1098 1094
1099 /* Check whether the e_entry function descriptor entries 1095 /*
1100 * need to be relocated before we can use them. 1096 * Ulrich says:
1101 */ 1097 * The latest iteration of the ABI requires that when
1102 if (load_addr != 0) { 1098 * calling a function (at its global entry point),
1103 entry += load_addr; 1099 * the caller must ensure r12 holds the entry point
1104 toc += load_addr; 1100 * address (so that the function can quickly
1101 * establish addressability).
1102 */
1103 regs->gpr[12] = start;
1104 /* Make sure that's restored on entry to userspace. */
1105 set_thread_flag(TIF_RESTOREALL);
1106 } else {
1107 unsigned long toc;
1108
1109 /* start is a relocated pointer to the function
1110 * descriptor for the elf _start routine. The first
1111 * entry in the function descriptor is the entry
1112 * address of _start and the second entry is the TOC
1113 * value we need to use.
1114 */
1115 __get_user(entry, (unsigned long __user *)start);
1116 __get_user(toc, (unsigned long __user *)start+1);
1117
1118 /* Check whether the e_entry function descriptor entries
1119 * need to be relocated before we can use them.
1120 */
1121 if (load_addr != 0) {
1122 entry += load_addr;
1123 toc += load_addr;
1124 }
1125 regs->gpr[2] = toc;
1105 } 1126 }
1106 regs->nip = entry; 1127 regs->nip = entry;
1107 regs->gpr[2] = toc;
1108 regs->msr = MSR_USER64; 1128 regs->msr = MSR_USER64;
1109 } else { 1129 } else {
1110 regs->nip = start; 1130 regs->nip = start;
diff --git a/arch/powerpc/kernel/signal_64.c b/arch/powerpc/kernel/signal_64.c
index b3c615764c9b..e66f67b8b9e6 100644
--- a/arch/powerpc/kernel/signal_64.c
+++ b/arch/powerpc/kernel/signal_64.c
@@ -701,12 +701,6 @@ badframe:
701int handle_rt_signal64(int signr, struct k_sigaction *ka, siginfo_t *info, 701int handle_rt_signal64(int signr, struct k_sigaction *ka, siginfo_t *info,
702 sigset_t *set, struct pt_regs *regs) 702 sigset_t *set, struct pt_regs *regs)
703{ 703{
704 /* Handler is *really* a pointer to the function descriptor for
705 * the signal routine. The first entry in the function
706 * descriptor is the entry address of signal and the second
707 * entry is the TOC value we need to use.
708 */
709 func_descr_t __user *funct_desc_ptr;
710 struct rt_sigframe __user *frame; 704 struct rt_sigframe __user *frame;
711 unsigned long newsp = 0; 705 unsigned long newsp = 0;
712 long err = 0; 706 long err = 0;
@@ -766,19 +760,32 @@ int handle_rt_signal64(int signr, struct k_sigaction *ka, siginfo_t *info,
766 goto badframe; 760 goto badframe;
767 regs->link = (unsigned long) &frame->tramp[0]; 761 regs->link = (unsigned long) &frame->tramp[0];
768 } 762 }
769 funct_desc_ptr = (func_descr_t __user *) ka->sa.sa_handler;
770 763
771 /* Allocate a dummy caller frame for the signal handler. */ 764 /* Allocate a dummy caller frame for the signal handler. */
772 newsp = ((unsigned long)frame) - __SIGNAL_FRAMESIZE; 765 newsp = ((unsigned long)frame) - __SIGNAL_FRAMESIZE;
773 err |= put_user(regs->gpr[1], (unsigned long __user *)newsp); 766 err |= put_user(regs->gpr[1], (unsigned long __user *)newsp);
774 767
775 /* Set up "regs" so we "return" to the signal handler. */ 768 /* Set up "regs" so we "return" to the signal handler. */
776 err |= get_user(regs->nip, &funct_desc_ptr->entry); 769 if (is_elf2_task()) {
770 regs->nip = (unsigned long) ka->sa.sa_handler;
771 regs->gpr[12] = regs->nip;
772 } else {
773 /* Handler is *really* a pointer to the function descriptor for
774 * the signal routine. The first entry in the function
775 * descriptor is the entry address of signal and the second
776 * entry is the TOC value we need to use.
777 */
778 func_descr_t __user *funct_desc_ptr =
779 (func_descr_t __user *) ka->sa.sa_handler;
780
781 err |= get_user(regs->nip, &funct_desc_ptr->entry);
782 err |= get_user(regs->gpr[2], &funct_desc_ptr->toc);
783 }
784
777 /* enter the signal handler in native-endian mode */ 785 /* enter the signal handler in native-endian mode */
778 regs->msr &= ~MSR_LE; 786 regs->msr &= ~MSR_LE;
779 regs->msr |= (MSR_KERNEL & MSR_LE); 787 regs->msr |= (MSR_KERNEL & MSR_LE);
780 regs->gpr[1] = newsp; 788 regs->gpr[1] = newsp;
781 err |= get_user(regs->gpr[2], &funct_desc_ptr->toc);
782 regs->gpr[3] = signr; 789 regs->gpr[3] = signr;
783 regs->result = 0; 790 regs->result = 0;
784 if (ka->sa.sa_flags & SA_SIGINFO) { 791 if (ka->sa.sa_flags & SA_SIGINFO) {
diff --git a/arch/powerpc/kernel/vdso64/sigtramp.S b/arch/powerpc/kernel/vdso64/sigtramp.S
index 45ea281e9a21..542c6f422e4d 100644
--- a/arch/powerpc/kernel/vdso64/sigtramp.S
+++ b/arch/powerpc/kernel/vdso64/sigtramp.S
@@ -142,6 +142,13 @@ V_FUNCTION_END(__kernel_sigtramp_rt64)
142/* Size of CR reg in DWARF unwind info. */ 142/* Size of CR reg in DWARF unwind info. */
143#define CRSIZE 4 143#define CRSIZE 4
144 144
145/* Offset of CR reg within a full word. */
146#ifdef __LITTLE_ENDIAN__
147#define CROFF 0
148#else
149#define CROFF (RSIZE - CRSIZE)
150#endif
151
145/* This is the offset of the VMX reg pointer. */ 152/* This is the offset of the VMX reg pointer. */
146#define VREGS 48*RSIZE+33*8 153#define VREGS 48*RSIZE+33*8
147 154
@@ -181,7 +188,14 @@ V_FUNCTION_END(__kernel_sigtramp_rt64)
181 rsave (31, 31*RSIZE); \ 188 rsave (31, 31*RSIZE); \
182 rsave (67, 32*RSIZE); /* ap, used as temp for nip */ \ 189 rsave (67, 32*RSIZE); /* ap, used as temp for nip */ \
183 rsave (65, 36*RSIZE); /* lr */ \ 190 rsave (65, 36*RSIZE); /* lr */ \
184 rsave (70, 38*RSIZE + (RSIZE - CRSIZE)) /* cr */ 191 rsave (68, 38*RSIZE + CROFF); /* cr fields */ \
192 rsave (69, 38*RSIZE + CROFF); \
193 rsave (70, 38*RSIZE + CROFF); \
194 rsave (71, 38*RSIZE + CROFF); \
195 rsave (72, 38*RSIZE + CROFF); \
196 rsave (73, 38*RSIZE + CROFF); \
197 rsave (74, 38*RSIZE + CROFF); \
198 rsave (75, 38*RSIZE + CROFF)
185 199
186/* Describe where the FP regs are saved. */ 200/* Describe where the FP regs are saved. */
187#define EH_FRAME_FP \ 201#define EH_FRAME_FP \
diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype
index c2a566fb8bb8..132f8726a257 100644
--- a/arch/powerpc/platforms/Kconfig.cputype
+++ b/arch/powerpc/platforms/Kconfig.cputype
@@ -403,3 +403,14 @@ config PPC_DOORBELL
403 default n 403 default n
404 404
405endmenu 405endmenu
406
407config CPU_LITTLE_ENDIAN
408 bool "Build little endian kernel"
409 default n
410 help
411 This option selects whether a big endian or little endian kernel will
412 be built.
413
414 Note that if cross compiling a little endian kernel,
415 CROSS_COMPILE must point to a toolchain capable of targeting
416 little endian powerpc.
diff --git a/arch/powerpc/platforms/pseries/eeh_pseries.c b/arch/powerpc/platforms/pseries/eeh_pseries.c
index 7fbc25b1813f..ccb633e077b1 100644
--- a/arch/powerpc/platforms/pseries/eeh_pseries.c
+++ b/arch/powerpc/platforms/pseries/eeh_pseries.c
@@ -189,8 +189,9 @@ static void *pseries_eeh_of_probe(struct device_node *dn, void *flag)
189 struct eeh_dev *edev; 189 struct eeh_dev *edev;
190 struct eeh_pe pe; 190 struct eeh_pe pe;
191 struct pci_dn *pdn = PCI_DN(dn); 191 struct pci_dn *pdn = PCI_DN(dn);
192 const u32 *class_code, *vendor_id, *device_id; 192 const __be32 *classp, *vendorp, *devicep;
193 const u32 *regs; 193 u32 class_code;
194 const __be32 *regs;
194 u32 pcie_flags; 195 u32 pcie_flags;
195 int enable = 0; 196 int enable = 0;
196 int ret; 197 int ret;
@@ -201,22 +202,24 @@ static void *pseries_eeh_of_probe(struct device_node *dn, void *flag)
201 return NULL; 202 return NULL;
202 203
203 /* Retrieve class/vendor/device IDs */ 204 /* Retrieve class/vendor/device IDs */
204 class_code = of_get_property(dn, "class-code", NULL); 205 classp = of_get_property(dn, "class-code", NULL);
205 vendor_id = of_get_property(dn, "vendor-id", NULL); 206 vendorp = of_get_property(dn, "vendor-id", NULL);
206 device_id = of_get_property(dn, "device-id", NULL); 207 devicep = of_get_property(dn, "device-id", NULL);
207 208
208 /* Skip for bad OF node or PCI-ISA bridge */ 209 /* Skip for bad OF node or PCI-ISA bridge */
209 if (!class_code || !vendor_id || !device_id) 210 if (!classp || !vendorp || !devicep)
210 return NULL; 211 return NULL;
211 if (dn->type && !strcmp(dn->type, "isa")) 212 if (dn->type && !strcmp(dn->type, "isa"))
212 return NULL; 213 return NULL;
213 214
215 class_code = of_read_number(classp, 1);
216
214 /* 217 /*
215 * Update class code and mode of eeh device. We need 218 * Update class code and mode of eeh device. We need
216 * correctly reflects that current device is root port 219 * correctly reflects that current device is root port
217 * or PCIe switch downstream port. 220 * or PCIe switch downstream port.
218 */ 221 */
219 edev->class_code = *class_code; 222 edev->class_code = class_code;
220 edev->pcie_cap = pseries_eeh_find_cap(dn, PCI_CAP_ID_EXP); 223 edev->pcie_cap = pseries_eeh_find_cap(dn, PCI_CAP_ID_EXP);
221 edev->mode &= 0xFFFFFF00; 224 edev->mode &= 0xFFFFFF00;
222 if ((edev->class_code >> 8) == PCI_CLASS_BRIDGE_PCI) { 225 if ((edev->class_code >> 8) == PCI_CLASS_BRIDGE_PCI) {
@@ -243,12 +246,12 @@ static void *pseries_eeh_of_probe(struct device_node *dn, void *flag)
243 /* Initialize the fake PE */ 246 /* Initialize the fake PE */
244 memset(&pe, 0, sizeof(struct eeh_pe)); 247 memset(&pe, 0, sizeof(struct eeh_pe));
245 pe.phb = edev->phb; 248 pe.phb = edev->phb;
246 pe.config_addr = regs[0]; 249 pe.config_addr = of_read_number(regs, 1);
247 250
248 /* Enable EEH on the device */ 251 /* Enable EEH on the device */
249 ret = eeh_ops->set_option(&pe, EEH_OPT_ENABLE); 252 ret = eeh_ops->set_option(&pe, EEH_OPT_ENABLE);
250 if (!ret) { 253 if (!ret) {
251 edev->config_addr = regs[0]; 254 edev->config_addr = of_read_number(regs, 1);
252 /* Retrieve PE address */ 255 /* Retrieve PE address */
253 edev->pe_config_addr = eeh_ops->get_pe_addr(&pe); 256 edev->pe_config_addr = eeh_ops->get_pe_addr(&pe);
254 pe.addr = edev->pe_config_addr; 257 pe.addr = edev->pe_config_addr;
diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c
index 356bc75ca74f..4fca3def9db9 100644
--- a/arch/powerpc/platforms/pseries/lpar.c
+++ b/arch/powerpc/platforms/pseries/lpar.c
@@ -245,6 +245,23 @@ static void pSeries_lpar_hptab_clear(void)
245 &(ptes[j].pteh), &(ptes[j].ptel)); 245 &(ptes[j].pteh), &(ptes[j].ptel));
246 } 246 }
247 } 247 }
248
249#ifdef __LITTLE_ENDIAN__
250 /* Reset exceptions to big endian */
251 if (firmware_has_feature(FW_FEATURE_SET_MODE)) {
252 long rc;
253
254 rc = pseries_big_endian_exceptions();
255 /*
256 * At this point it is unlikely panic() will get anything
257 * out to the user, but at least this will stop us from
258 * continuing on further and creating an even more
259 * difficult to debug situation.
260 */
261 if (rc)
262 panic("Could not enable big endian exceptions");
263 }
264#endif
248} 265}
249 266
250/* 267/*
diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c
index 1f97e2b87a62..c1f190858701 100644
--- a/arch/powerpc/platforms/pseries/setup.c
+++ b/arch/powerpc/platforms/pseries/setup.c
@@ -442,6 +442,32 @@ static void pSeries_machine_kexec(struct kimage *image)
442} 442}
443#endif 443#endif
444 444
445#ifdef __LITTLE_ENDIAN__
446long pseries_big_endian_exceptions(void)
447{
448 long rc;
449
450 while (1) {
451 rc = enable_big_endian_exceptions();
452 if (!H_IS_LONG_BUSY(rc))
453 return rc;
454 mdelay(get_longbusy_msecs(rc));
455 }
456}
457
458static long pseries_little_endian_exceptions(void)
459{
460 long rc;
461
462 while (1) {
463 rc = enable_little_endian_exceptions();
464 if (!H_IS_LONG_BUSY(rc))
465 return rc;
466 mdelay(get_longbusy_msecs(rc));
467 }
468}
469#endif
470
445static void __init pSeries_setup_arch(void) 471static void __init pSeries_setup_arch(void)
446{ 472{
447 panic_timeout = 10; 473 panic_timeout = 10;
@@ -698,6 +724,22 @@ static int __init pSeries_probe(void)
698 /* Now try to figure out if we are running on LPAR */ 724 /* Now try to figure out if we are running on LPAR */
699 of_scan_flat_dt(pseries_probe_fw_features, NULL); 725 of_scan_flat_dt(pseries_probe_fw_features, NULL);
700 726
727#ifdef __LITTLE_ENDIAN__
728 if (firmware_has_feature(FW_FEATURE_SET_MODE)) {
729 long rc;
730 /*
731 * Tell the hypervisor that we want our exceptions to
732 * be taken in little endian mode. If this fails we don't
733 * want to use BUG() because it will trigger an exception.
734 */
735 rc = pseries_little_endian_exceptions();
736 if (rc) {
737 ppc_md.progress("H_SET_MODE LE exception fail", 0);
738 panic("Could not enable little endian exceptions");
739 }
740 }
741#endif
742
701 if (firmware_has_feature(FW_FEATURE_LPAR)) 743 if (firmware_has_feature(FW_FEATURE_LPAR))
702 hpte_init_lpar(); 744 hpte_init_lpar();
703 else 745 else
generated by cgit v1.2.2 (git 2.25.0) at 2025-12-31 08:55:04 -0500