blob: 8a33698c61bd7ab98c0b7e08ee21e6a17aeeb409 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
|
#ifndef _ASM_POWERPC_KEXEC_H
#define _ASM_POWERPC_KEXEC_H
#ifdef __KERNEL__
#ifdef CONFIG_FSL_BOOKE
/*
* On FSL-BookE we setup a 1:1 mapping which covers the first 2GiB of memory
* and therefore we can only deal with memory within this range
*/
#define KEXEC_SOURCE_MEMORY_LIMIT (2 * 1024 * 1024 * 1024UL - 1)
#define KEXEC_DESTINATION_MEMORY_LIMIT (2 * 1024 * 1024 * 1024UL - 1)
#define KEXEC_CONTROL_MEMORY_LIMIT (2 * 1024 * 1024 * 1024UL - 1)
#else
/*
* Maximum page that is mapped directly into kernel memory.
* XXX: Since we copy virt we can use any page we allocate
*/
#define KEXEC_SOURCE_MEMORY_LIMIT (-1UL)
/*
* Maximum address we can reach in physical address mode.
* XXX: I want to allow initrd in highmem. Otherwise set to rmo on LPAR.
*/
#define KEXEC_DESTINATION_MEMORY_LIMIT (-1UL)
/* Maximum address we can use for the control code buffer */
#ifdef __powerpc64__
#define KEXEC_CONTROL_MEMORY_LIMIT (-1UL)
#else
/* TASK_SIZE, probably left over from use_mm ?? */
#define KEXEC_CONTROL_MEMORY_LIMIT TASK_SIZE
#endif
#endif
#define KEXEC_CONTROL_PAGE_SIZE 4096
/* The native architecture */
#ifdef __powerpc64__
#define KEXEC_ARCH KEXEC_ARCH_PPC64
#else
#define KEXEC_ARCH KEXEC_ARCH_PPC
#endif
#define KEXEC_STATE_NONE 0
#define KEXEC_STATE_IRQS_OFF 1
#define KEXEC_STATE_REAL_MODE 2
#ifndef __ASSEMBLY__
#include <linux/cpumask.h>
#include <asm/reg.h>
typedef void (*crash_shutdown_t)(void);
#ifdef CONFIG_KEXEC
/*
* This function is responsible for capturing register states if coming
* via panic or invoking dump using sysrq-trigger.
*/
static inline void crash_setup_regs(struct pt_regs *newregs,
struct pt_regs *oldregs)
{
if (oldregs)
memcpy(newregs, oldregs, sizeof(*newregs));
else
ppc_save_regs(newregs);
}
extern void kexec_smp_wait(void); /* get and clear naca physid, wait for
master to copy new code to 0 */
extern int crashing_cpu;
extern void crash_send_ipi(void (*crash_ipi_callback)(struct pt_regs *));
extern cpumask_t cpus_in_sr;
static inline int kexec_sr_activated(int cpu)
{
return cpumask_test_cpu(cpu, &cpus_in_sr);
}
struct kimage;
struct pt_regs;
extern void default_machine_kexec(struct kimage *image);
extern int default_machine_kexec_prepare(struct kimage *image);
extern void default_machine_crash_shutdown(struct pt_regs *regs);
extern int crash_shutdown_register(crash_shutdown_t handler);
extern int crash_shutdown_unregister(crash_shutdown_t handler);
extern void machine_kexec_simple(struct kimage *image);
extern void crash_kexec_secondary(struct pt_regs *regs);
extern int overlaps_crashkernel(unsigned long start, unsigned long size);
extern void reserve_crashkernel(void);
extern void machine_kexec_mask_interrupts(void);
#else /* !CONFIG_KEXEC */
static inline int kexec_sr_activated(int cpu) { return 0; }
static inline void crash_kexec_secondary(struct pt_regs *regs) { }
static inline int overlaps_crashkernel(unsigned long start, unsigned long size)
{
return 0;
}
static inline void reserve_crashkernel(void) { ; }
static inline int crash_shutdown_register(crash_shutdown_t handler)
{
return 0;
}
static inline int crash_shutdown_unregister(crash_shutdown_t handler)
{
return 0;
}
#endif /* CONFIG_KEXEC */
#endif /* ! __ASSEMBLY__ */
#endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_KEXEC_H */
|
