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authorMichael Ellerman <michael@ellerman.id.au>2006-07-05 00:39:42 -0400
committerPaul Mackerras <paulus@samba.org>2006-08-17 02:41:10 -0400
commit47585d8f5dea10dea49c948f1fb13ef7632409c7 (patch)
treed9386ca930b7470e64f3d60076e3cf72f1b22c75 /arch
parent90bdde362cc506173c1d18b8f516b18e5b228e96 (diff)
[POWERPC] Move some kexec logic into machine_kexec.c
We're missing a few functions for kexec to compile on 32-bit. There's nothing really 64-bit specific about the 64-bit versions, so make them generic rather than adding empty definitions for 32-bit. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/powerpc/kernel/machine_kexec.c56
-rw-r--r--arch/powerpc/kernel/machine_kexec_64.c56
2 files changed, 56 insertions, 56 deletions
diff --git a/arch/powerpc/kernel/machine_kexec.c b/arch/powerpc/kernel/machine_kexec.c
index a81ca1b841ec..e60a0c544d63 100644
--- a/arch/powerpc/kernel/machine_kexec.c
+++ b/arch/powerpc/kernel/machine_kexec.c
@@ -13,6 +13,7 @@
13#include <linux/reboot.h> 13#include <linux/reboot.h>
14#include <linux/threads.h> 14#include <linux/threads.h>
15#include <asm/machdep.h> 15#include <asm/machdep.h>
16#include <asm/lmb.h>
16 17
17void machine_crash_shutdown(struct pt_regs *regs) 18void machine_crash_shutdown(struct pt_regs *regs)
18{ 19{
@@ -59,3 +60,58 @@ NORET_TYPE void machine_kexec(struct kimage *image)
59 } 60 }
60 for(;;); 61 for(;;);
61} 62}
63
64static int __init early_parse_crashk(char *p)
65{
66 unsigned long size;
67
68 if (!p)
69 return 1;
70
71 size = memparse(p, &p);
72
73 if (*p == '@')
74 crashk_res.start = memparse(p + 1, &p);
75 else
76 crashk_res.start = KDUMP_KERNELBASE;
77
78 crashk_res.end = crashk_res.start + size - 1;
79
80 return 0;
81}
82early_param("crashkernel", early_parse_crashk);
83
84void __init reserve_crashkernel(void)
85{
86 unsigned long size;
87
88 if (crashk_res.start == 0)
89 return;
90
91 /* We might have got these values via the command line or the
92 * device tree, either way sanitise them now. */
93
94 size = crashk_res.end - crashk_res.start + 1;
95
96 if (crashk_res.start != KDUMP_KERNELBASE)
97 printk("Crash kernel location must be 0x%x\n",
98 KDUMP_KERNELBASE);
99
100 crashk_res.start = KDUMP_KERNELBASE;
101 size = PAGE_ALIGN(size);
102 crashk_res.end = crashk_res.start + size - 1;
103
104 /* Crash kernel trumps memory limit */
105 if (memory_limit && memory_limit <= crashk_res.end) {
106 memory_limit = crashk_res.end + 1;
107 printk("Adjusted memory limit for crashkernel, now 0x%lx\n",
108 memory_limit);
109 }
110
111 lmb_reserve(crashk_res.start, size);
112}
113
114int overlaps_crashkernel(unsigned long start, unsigned long size)
115{
116 return (start + size) > crashk_res.start && start <= crashk_res.end;
117}
diff --git a/arch/powerpc/kernel/machine_kexec_64.c b/arch/powerpc/kernel/machine_kexec_64.c
index b438d45a068c..b6db19d61435 100644
--- a/arch/powerpc/kernel/machine_kexec_64.c
+++ b/arch/powerpc/kernel/machine_kexec_64.c
@@ -21,7 +21,6 @@
21#include <asm/machdep.h> 21#include <asm/machdep.h>
22#include <asm/cacheflush.h> 22#include <asm/cacheflush.h>
23#include <asm/paca.h> 23#include <asm/paca.h>
24#include <asm/lmb.h>
25#include <asm/mmu.h> 24#include <asm/mmu.h>
26#include <asm/sections.h> /* _end */ 25#include <asm/sections.h> /* _end */
27#include <asm/prom.h> 26#include <asm/prom.h>
@@ -385,58 +384,3 @@ static int __init kexec_setup(void)
385 return 0; 384 return 0;
386} 385}
387__initcall(kexec_setup); 386__initcall(kexec_setup);
388
389static int __init early_parse_crashk(char *p)
390{
391 unsigned long size;
392
393 if (!p)
394 return 1;
395
396 size = memparse(p, &p);
397
398 if (*p == '@')
399 crashk_res.start = memparse(p + 1, &p);
400 else
401 crashk_res.start = KDUMP_KERNELBASE;
402
403 crashk_res.end = crashk_res.start + size - 1;
404
405 return 0;
406}
407early_param("crashkernel", early_parse_crashk);
408
409void __init reserve_crashkernel(void)
410{
411 unsigned long size;
412
413 if (crashk_res.start == 0)
414 return;
415
416 /* We might have got these values via the command line or the
417 * device tree, either way sanitise them now. */
418
419 size = crashk_res.end - crashk_res.start + 1;
420
421 if (crashk_res.start != KDUMP_KERNELBASE)
422 printk("Crash kernel location must be 0x%x\n",
423 KDUMP_KERNELBASE);
424
425 crashk_res.start = KDUMP_KERNELBASE;
426 size = PAGE_ALIGN(size);
427 crashk_res.end = crashk_res.start + size - 1;
428
429 /* Crash kernel trumps memory limit */
430 if (memory_limit && memory_limit <= crashk_res.end) {
431 memory_limit = crashk_res.end + 1;
432 printk("Adjusted memory limit for crashkernel, now 0x%lx\n",
433 memory_limit);
434 }
435
436 lmb_reserve(crashk_res.start, size);
437}
438
439int overlaps_crashkernel(unsigned long start, unsigned long size)
440{
441 return (start + size) > crashk_res.start && start <= crashk_res.end;
442}