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authorLinus Torvalds <torvalds@woody.linux-foundation.org>2007-02-19 16:18:39 -0500
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-02-19 16:18:39 -0500
commit59b8175c771040afcd4ad67022b0cc80c216b866 (patch)
tree4ef5935bee1e342716d49b9d4b99e3fa835526e6 /arch/arm/kernel
parent920841d8d1d61bc12b43f95a579a5374f6d98f81 (diff)
parent3b0eb4a195a124567cd0dd6f700f8388def542c6 (diff)
Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (117 commits) [ARM] 4058/2: iop32x: set ->broken_parity_status on n2100 onboard r8169 ports [ARM] 4140/1: AACI stability add ac97 timeout and retries [ARM] 4139/1: AACI record support [ARM] 4138/1: AACI: multiple channel support for IRQ handling [ARM] 4211/1: Provide a defconfig for ns9xxx [ARM] 4210/1: base for new machine type "NetSilicon NS9360" [ARM] 4222/1: S3C2443: Remove reference to missing S3C2443_PM [ARM] 4221/1: S3C2443: DMA support [ARM] 4220/1: S3C24XX: DMA system initialised from sysdev [ARM] 4219/1: S3C2443: DMA source definitions [ARM] 4218/1: S3C2412: fix CONFIG_CPU_S3C2412_ONLY wrt to S3C2443 [ARM] 4217/1: S3C24XX: remove the dma channel show at startup [ARM] 4090/2: avoid clash between PXA and SA1111 defines [ARM] 4216/1: add .gitignore entries for ARM specific files [ARM] 4214/2: S3C2410: Add Armzone QT2410 [ARM] 4215/1: s3c2410 usb device: per-platform vbus_draw [ARM] 4213/1: S3C2410 - Update definition of ADCTSC_XY_PST [ARM] 4098/1: ARM: rtc_lock only used with rtc_cmos [ARM] 4137/1: Add kexec support [ARM] 4201/1: SMP barriers pair needed for the secondary boot process ... Fix up conflict due to typedef removal in sound/arm/aaci.h
Diffstat (limited to 'arch/arm/kernel')
-rw-r--r--arch/arm/kernel/Makefile1
-rw-r--r--arch/arm/kernel/calls.S1
-rw-r--r--arch/arm/kernel/crunch.c1
-rw-r--r--arch/arm/kernel/ecard.c2
-rw-r--r--arch/arm/kernel/entry-armv.S1
-rw-r--r--arch/arm/kernel/machine_kexec.c78
-rw-r--r--arch/arm/kernel/process.c8
-rw-r--r--arch/arm/kernel/relocate_kernel.S74
-rw-r--r--arch/arm/kernel/setup.c3
-rw-r--r--arch/arm/kernel/time.c4
-rw-r--r--arch/arm/kernel/traps.c17
11 files changed, 175 insertions, 15 deletions
diff --git a/arch/arm/kernel/Makefile b/arch/arm/kernel/Makefile
index 1b935fb94b83..bb28087bf818 100644
--- a/arch/arm/kernel/Makefile
+++ b/arch/arm/kernel/Makefile
@@ -18,6 +18,7 @@ obj-$(CONFIG_ARTHUR) += arthur.o
18obj-$(CONFIG_ISA_DMA) += dma-isa.o 18obj-$(CONFIG_ISA_DMA) += dma-isa.o
19obj-$(CONFIG_PCI) += bios32.o isa.o 19obj-$(CONFIG_PCI) += bios32.o isa.o
20obj-$(CONFIG_SMP) += smp.o 20obj-$(CONFIG_SMP) += smp.o
21obj-$(CONFIG_KEXEC) += machine_kexec.o relocate_kernel.o
21obj-$(CONFIG_OABI_COMPAT) += sys_oabi-compat.o 22obj-$(CONFIG_OABI_COMPAT) += sys_oabi-compat.o
22 23
23obj-$(CONFIG_CRUNCH) += crunch.o crunch-bits.o 24obj-$(CONFIG_CRUNCH) += crunch.o crunch-bits.o
diff --git a/arch/arm/kernel/calls.S b/arch/arm/kernel/calls.S
index f7598cbc7ec5..ae89cdd82b16 100644
--- a/arch/arm/kernel/calls.S
+++ b/arch/arm/kernel/calls.S
@@ -356,6 +356,7 @@
356 CALL(sys_move_pages) 356 CALL(sys_move_pages)
357/* 345 */ CALL(sys_getcpu) 357/* 345 */ CALL(sys_getcpu)
358 CALL(sys_ni_syscall) /* eventually epoll_pwait */ 358 CALL(sys_ni_syscall) /* eventually epoll_pwait */
359 CALL(sys_kexec_load)
359#ifndef syscalls_counted 360#ifndef syscalls_counted
360.equ syscalls_padding, ((NR_syscalls + 3) & ~3) - NR_syscalls 361.equ syscalls_padding, ((NR_syscalls + 3) & ~3) - NR_syscalls
361#define syscalls_counted 362#define syscalls_counted
diff --git a/arch/arm/kernel/crunch.c b/arch/arm/kernel/crunch.c
index cec83783206e..627d79414c9d 100644
--- a/arch/arm/kernel/crunch.c
+++ b/arch/arm/kernel/crunch.c
@@ -75,6 +75,7 @@ static struct notifier_block crunch_notifier_block = {
75static int __init crunch_init(void) 75static int __init crunch_init(void)
76{ 76{
77 thread_register_notifier(&crunch_notifier_block); 77 thread_register_notifier(&crunch_notifier_block);
78 elf_hwcap |= HWCAP_CRUNCH;
78 79
79 return 0; 80 return 0;
80} 81}
diff --git a/arch/arm/kernel/ecard.c b/arch/arm/kernel/ecard.c
index 71257e3d513f..f1c0fb974177 100644
--- a/arch/arm/kernel/ecard.c
+++ b/arch/arm/kernel/ecard.c
@@ -1009,7 +1009,7 @@ ecard_probe(int slot, card_type_t type)
1009 ec->fiqmask = 4; 1009 ec->fiqmask = 4;
1010 } 1010 }
1011 1011
1012 for (i = 0; i < sizeof(blacklist) / sizeof(*blacklist); i++) 1012 for (i = 0; i < ARRAY_SIZE(blacklist); i++)
1013 if (blacklist[i].manufacturer == ec->cid.manufacturer && 1013 if (blacklist[i].manufacturer == ec->cid.manufacturer &&
1014 blacklist[i].product == ec->cid.product) { 1014 blacklist[i].product == ec->cid.product) {
1015 ec->card_desc = blacklist[i].type; 1015 ec->card_desc = blacklist[i].type;
diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S
index 8517c3c3eb33..cc10a093a545 100644
--- a/arch/arm/kernel/entry-armv.S
+++ b/arch/arm/kernel/entry-armv.S
@@ -99,7 +99,6 @@ common_invalid:
99 @ cpsr_<exception>, "old_r0" 99 @ cpsr_<exception>, "old_r0"
100 100
101 mov r0, sp 101 mov r0, sp
102 and r2, r6, #0x1f
103 b bad_mode 102 b bad_mode
104 103
105/* 104/*
diff --git a/arch/arm/kernel/machine_kexec.c b/arch/arm/kernel/machine_kexec.c
new file mode 100644
index 000000000000..863c66454f2b
--- /dev/null
+++ b/arch/arm/kernel/machine_kexec.c
@@ -0,0 +1,78 @@
1/*
2 * machine_kexec.c - handle transition of Linux booting another kernel
3 */
4
5#include <linux/mm.h>
6#include <linux/kexec.h>
7#include <linux/delay.h>
8#include <linux/reboot.h>
9#include <asm/pgtable.h>
10#include <asm/pgalloc.h>
11#include <asm/mmu_context.h>
12#include <asm/io.h>
13#include <asm/cacheflush.h>
14#include <asm/mach-types.h>
15
16const extern unsigned char relocate_new_kernel[];
17const extern unsigned int relocate_new_kernel_size;
18
19extern void setup_mm_for_reboot(char mode);
20
21extern unsigned long kexec_start_address;
22extern unsigned long kexec_indirection_page;
23extern unsigned long kexec_mach_type;
24
25/*
26 * Provide a dummy crash_notes definition while crash dump arrives to arm.
27 * This prevents breakage of crash_notes attribute in kernel/ksysfs.c.
28 */
29
30int machine_kexec_prepare(struct kimage *image)
31{
32 return 0;
33}
34
35void machine_kexec_cleanup(struct kimage *image)
36{
37}
38
39void machine_shutdown(void)
40{
41}
42
43void machine_crash_shutdown(struct pt_regs *regs)
44{
45}
46
47void machine_kexec(struct kimage *image)
48{
49 unsigned long page_list;
50 unsigned long reboot_code_buffer_phys;
51 void *reboot_code_buffer;
52
53
54 page_list = image->head & PAGE_MASK;
55
56 /* we need both effective and real address here */
57 reboot_code_buffer_phys =
58 page_to_pfn(image->control_code_page) << PAGE_SHIFT;
59 reboot_code_buffer = page_address(image->control_code_page);
60
61 /* Prepare parameters for reboot_code_buffer*/
62 kexec_start_address = image->start;
63 kexec_indirection_page = page_list;
64 kexec_mach_type = machine_arch_type;
65
66 /* copy our kernel relocation code to the control code page */
67 memcpy(reboot_code_buffer,
68 relocate_new_kernel, relocate_new_kernel_size);
69
70
71 flush_icache_range((unsigned long) reboot_code_buffer,
72 (unsigned long) reboot_code_buffer + KEXEC_CONTROL_CODE_SIZE);
73 printk(KERN_INFO "Bye!\n");
74
75 cpu_proc_fin();
76 setup_mm_for_reboot(0); /* mode is not used, so just pass 0*/
77 cpu_reset(reboot_code_buffer_phys);
78}
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
index a9e8f7e55fd6..782af3cb213f 100644
--- a/arch/arm/kernel/process.c
+++ b/arch/arm/kernel/process.c
@@ -36,7 +36,13 @@
36#include <asm/uaccess.h> 36#include <asm/uaccess.h>
37#include <asm/mach/time.h> 37#include <asm/mach/time.h>
38 38
39extern const char *processor_modes[]; 39static const char *processor_modes[] = {
40 "USER_26", "FIQ_26" , "IRQ_26" , "SVC_26" , "UK4_26" , "UK5_26" , "UK6_26" , "UK7_26" ,
41 "UK8_26" , "UK9_26" , "UK10_26", "UK11_26", "UK12_26", "UK13_26", "UK14_26", "UK15_26",
42 "USER_32", "FIQ_32" , "IRQ_32" , "SVC_32" , "UK4_32" , "UK5_32" , "UK6_32" , "ABT_32" ,
43 "UK8_32" , "UK9_32" , "UK10_32", "UND_32" , "UK12_32", "UK13_32", "UK14_32", "SYS_32"
44};
45
40extern void setup_mm_for_reboot(char mode); 46extern void setup_mm_for_reboot(char mode);
41 47
42static volatile int hlt_counter; 48static volatile int hlt_counter;
diff --git a/arch/arm/kernel/relocate_kernel.S b/arch/arm/kernel/relocate_kernel.S
new file mode 100644
index 000000000000..7baadae7cb27
--- /dev/null
+++ b/arch/arm/kernel/relocate_kernel.S
@@ -0,0 +1,74 @@
1/*
2 * relocate_kernel.S - put the kernel image in place to boot
3 */
4
5#include <asm/kexec.h>
6
7 .globl relocate_new_kernel
8relocate_new_kernel:
9
10 ldr r0,kexec_indirection_page
11 ldr r1,kexec_start_address
12
13
140: /* top, read another word for the indirection page */
15 ldr r3, [r0],#4
16
17 /* Is it a destination page. Put destination address to r4 */
18 tst r3,#1,0
19 beq 1f
20 bic r4,r3,#1
21 b 0b
221:
23 /* Is it an indirection page */
24 tst r3,#2,0
25 beq 1f
26 bic r0,r3,#2
27 b 0b
281:
29
30 /* are we done ? */
31 tst r3,#4,0
32 beq 1f
33 b 2f
34
351:
36 /* is it source ? */
37 tst r3,#8,0
38 beq 0b
39 bic r3,r3,#8
40 mov r6,#1024
419:
42 ldr r5,[r3],#4
43 str r5,[r4],#4
44 subs r6,r6,#1
45 bne 9b
46 b 0b
47
482:
49 /* Jump to relocated kernel */
50 mov lr,r1
51 mov r0,#0
52 ldr r1,kexec_mach_type
53 mov r2,#0
54 mov pc,lr
55
56 .globl kexec_start_address
57kexec_start_address:
58 .long 0x0
59
60 .globl kexec_indirection_page
61kexec_indirection_page:
62 .long 0x0
63
64 .globl kexec_mach_type
65kexec_mach_type:
66 .long 0x0
67
68relocate_new_kernel_end:
69
70 .globl relocate_new_kernel_size
71relocate_new_kernel_size:
72 .long relocate_new_kernel_end - relocate_new_kernel
73
74
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index ed522151878b..03e37af315d7 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -88,6 +88,9 @@ struct cpu_user_fns cpu_user;
88#ifdef MULTI_CACHE 88#ifdef MULTI_CACHE
89struct cpu_cache_fns cpu_cache; 89struct cpu_cache_fns cpu_cache;
90#endif 90#endif
91#ifdef CONFIG_OUTER_CACHE
92struct outer_cache_fns outer_cache;
93#endif
91 94
92struct stack { 95struct stack {
93 u32 irq[3]; 96 u32 irq[3];
diff --git a/arch/arm/kernel/time.c b/arch/arm/kernel/time.c
index ee47c532e210..f61decb89ba2 100644
--- a/arch/arm/kernel/time.c
+++ b/arch/arm/kernel/time.c
@@ -40,12 +40,14 @@
40 */ 40 */
41struct sys_timer *system_timer; 41struct sys_timer *system_timer;
42 42
43#if defined(CONFIG_RTC_DRV_CMOS) || defined(CONFIG_RTC_DRV_CMOS_MODULE)
43/* this needs a better home */ 44/* this needs a better home */
44DEFINE_SPINLOCK(rtc_lock); 45DEFINE_SPINLOCK(rtc_lock);
45 46
46#ifdef CONFIG_SA1100_RTC_MODULE 47#ifdef CONFIG_RTC_DRV_CMOS_MODULE
47EXPORT_SYMBOL(rtc_lock); 48EXPORT_SYMBOL(rtc_lock);
48#endif 49#endif
50#endif /* pc-style 'CMOS' RTC support */
49 51
50/* change this if you have some constant time drift */ 52/* change this if you have some constant time drift */
51#define USECS_PER_JIFFY (1000000/HZ) 53#define USECS_PER_JIFFY (1000000/HZ)
diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c
index 908915675edc..24095601359b 100644
--- a/arch/arm/kernel/traps.c
+++ b/arch/arm/kernel/traps.c
@@ -32,13 +32,6 @@
32#include "ptrace.h" 32#include "ptrace.h"
33#include "signal.h" 33#include "signal.h"
34 34
35const char *processor_modes[]=
36{ "USER_26", "FIQ_26" , "IRQ_26" , "SVC_26" , "UK4_26" , "UK5_26" , "UK6_26" , "UK7_26" ,
37 "UK8_26" , "UK9_26" , "UK10_26", "UK11_26", "UK12_26", "UK13_26", "UK14_26", "UK15_26",
38 "USER_32", "FIQ_32" , "IRQ_32" , "SVC_32" , "UK4_32" , "UK5_32" , "UK6_32" , "ABT_32" ,
39 "UK8_32" , "UK9_32" , "UK10_32", "UND_32" , "UK12_32", "UK13_32", "UK14_32", "SYS_32"
40};
41
42static const char *handler[]= { "prefetch abort", "data abort", "address exception", "interrupt" }; 35static const char *handler[]= { "prefetch abort", "data abort", "address exception", "interrupt" };
43 36
44#ifdef CONFIG_DEBUG_USER 37#ifdef CONFIG_DEBUG_USER
@@ -289,7 +282,10 @@ asmlinkage void do_undefinstr(struct pt_regs *regs)
289 regs->ARM_pc -= correction; 282 regs->ARM_pc -= correction;
290 283
291 pc = (void __user *)instruction_pointer(regs); 284 pc = (void __user *)instruction_pointer(regs);
292 if (thumb_mode(regs)) { 285
286 if (processor_mode(regs) == SVC_MODE) {
287 instr = *(u32 *) pc;
288 } else if (thumb_mode(regs)) {
293 get_user(instr, (u16 __user *)pc); 289 get_user(instr, (u16 __user *)pc);
294 } else { 290 } else {
295 get_user(instr, (u32 __user *)pc); 291 get_user(instr, (u32 __user *)pc);
@@ -337,12 +333,11 @@ asmlinkage void do_unexp_fiq (struct pt_regs *regs)
337 * It never returns, and never tries to sync. We hope that we can at least 333 * It never returns, and never tries to sync. We hope that we can at least
338 * dump out some state information... 334 * dump out some state information...
339 */ 335 */
340asmlinkage void bad_mode(struct pt_regs *regs, int reason, int proc_mode) 336asmlinkage void bad_mode(struct pt_regs *regs, int reason)
341{ 337{
342 console_verbose(); 338 console_verbose();
343 339
344 printk(KERN_CRIT "Bad mode in %s handler detected: mode %s\n", 340 printk(KERN_CRIT "Bad mode in %s handler detected\n", handler[reason]);
345 handler[reason], processor_modes[proc_mode]);
346 341
347 die("Oops - bad mode", regs, 0); 342 die("Oops - bad mode", regs, 0);
348 local_irq_disable(); 343 local_irq_disable();