]>
Commit | Line | Data |
---|---|---|
b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
e1df870d ME |
2 | #ifndef _ASM_POWERPC_KEXEC_H |
3 | #define _ASM_POWERPC_KEXEC_H | |
88ced031 | 4 | #ifdef __KERNEL__ |
e1df870d | 5 | |
674bfa48 | 6 | #if defined(CONFIG_FSL_BOOKE) || defined(CONFIG_44x) |
b3df895a SAS |
7 | |
8 | /* | |
9 | * On FSL-BookE we setup a 1:1 mapping which covers the first 2GiB of memory | |
10 | * and therefore we can only deal with memory within this range | |
11 | */ | |
23dcab8f KG |
12 | #define KEXEC_SOURCE_MEMORY_LIMIT (2 * 1024 * 1024 * 1024UL - 1) |
13 | #define KEXEC_DESTINATION_MEMORY_LIMIT (2 * 1024 * 1024 * 1024UL - 1) | |
14 | #define KEXEC_CONTROL_MEMORY_LIMIT (2 * 1024 * 1024 * 1024UL - 1) | |
b3df895a SAS |
15 | |
16 | #else | |
17 | ||
e1df870d ME |
18 | /* |
19 | * Maximum page that is mapped directly into kernel memory. | |
20 | * XXX: Since we copy virt we can use any page we allocate | |
21 | */ | |
22 | #define KEXEC_SOURCE_MEMORY_LIMIT (-1UL) | |
23 | ||
24 | /* | |
25 | * Maximum address we can reach in physical address mode. | |
26 | * XXX: I want to allow initrd in highmem. Otherwise set to rmo on LPAR. | |
27 | */ | |
28 | #define KEXEC_DESTINATION_MEMORY_LIMIT (-1UL) | |
29 | ||
30 | /* Maximum address we can use for the control code buffer */ | |
31 | #ifdef __powerpc64__ | |
32 | #define KEXEC_CONTROL_MEMORY_LIMIT (-1UL) | |
33 | #else | |
34 | /* TASK_SIZE, probably left over from use_mm ?? */ | |
35 | #define KEXEC_CONTROL_MEMORY_LIMIT TASK_SIZE | |
36 | #endif | |
b3df895a | 37 | #endif |
e1df870d | 38 | |
163f6876 | 39 | #define KEXEC_CONTROL_PAGE_SIZE 4096 |
e1df870d ME |
40 | |
41 | /* The native architecture */ | |
42 | #ifdef __powerpc64__ | |
43 | #define KEXEC_ARCH KEXEC_ARCH_PPC64 | |
44 | #else | |
45 | #define KEXEC_ARCH KEXEC_ARCH_PPC | |
46 | #endif | |
47 | ||
1fc711f7 MN |
48 | #define KEXEC_STATE_NONE 0 |
49 | #define KEXEC_STATE_IRQS_OFF 1 | |
50 | #define KEXEC_STATE_REAL_MODE 2 | |
51 | ||
2babf5c2 | 52 | #ifndef __ASSEMBLY__ |
73753313 | 53 | #include <asm/reg.h> |
2babf5c2 | 54 | |
aee10c61 AB |
55 | typedef void (*crash_shutdown_t)(void); |
56 | ||
da665885 | 57 | #ifdef CONFIG_KEXEC_CORE |
cc532915 | 58 | |
8385a6a3 HM |
59 | /* |
60 | * This function is responsible for capturing register states if coming | |
61 | * via panic or invoking dump using sysrq-trigger. | |
62 | */ | |
63 | static inline void crash_setup_regs(struct pt_regs *newregs, | |
64 | struct pt_regs *oldregs) | |
65 | { | |
66 | if (oldregs) | |
67 | memcpy(newregs, oldregs, sizeof(*newregs)); | |
73753313 AV |
68 | else |
69 | ppc_save_regs(newregs); | |
73753313 | 70 | } |
8385a6a3 | 71 | |
e1df870d ME |
72 | extern void kexec_smp_wait(void); /* get and clear naca physid, wait for |
73 | master to copy new code to 0 */ | |
cc532915 ME |
74 | extern int crashing_cpu; |
75 | extern void crash_send_ipi(void (*crash_ipi_callback)(struct pt_regs *)); | |
e1df870d | 76 | |
3d1229d6 | 77 | struct kimage; |
cc532915 | 78 | struct pt_regs; |
3d1229d6 ME |
79 | extern void default_machine_kexec(struct kimage *image); |
80 | extern int default_machine_kexec_prepare(struct kimage *image); | |
cc532915 | 81 | extern void default_machine_crash_shutdown(struct pt_regs *regs); |
496b010e MN |
82 | extern int crash_shutdown_register(crash_shutdown_t handler); |
83 | extern int crash_shutdown_unregister(crash_shutdown_t handler); | |
cc532915 | 84 | |
c0ce7d08 | 85 | extern void crash_kexec_secondary(struct pt_regs *regs); |
2babf5c2 | 86 | extern int overlaps_crashkernel(unsigned long start, unsigned long size); |
35dd5432 | 87 | extern void reserve_crashkernel(void); |
c71635d2 | 88 | extern void machine_kexec_mask_interrupts(void); |
2babf5c2 | 89 | |
c1caae3d HB |
90 | static inline bool kdump_in_progress(void) |
91 | { | |
92 | return crashing_cpu >= 0; | |
93 | } | |
94 | ||
a0458284 TJB |
95 | #ifdef CONFIG_KEXEC_FILE |
96 | extern struct kexec_file_ops kexec_elf64_ops; | |
97 | ||
ab6b1d1f TJB |
98 | #ifdef CONFIG_IMA_KEXEC |
99 | #define ARCH_HAS_KIMAGE_ARCH | |
100 | ||
101 | struct kimage_arch { | |
102 | phys_addr_t ima_buffer_addr; | |
103 | size_t ima_buffer_size; | |
104 | }; | |
105 | #endif | |
106 | ||
a0458284 TJB |
107 | int setup_purgatory(struct kimage *image, const void *slave_code, |
108 | const void *fdt, unsigned long kernel_load_addr, | |
109 | unsigned long fdt_load_addr); | |
ab6b1d1f TJB |
110 | int setup_new_fdt(const struct kimage *image, void *fdt, |
111 | unsigned long initrd_load_addr, unsigned long initrd_len, | |
112 | const char *cmdline); | |
467d2782 | 113 | int delete_fdt_mem_rsv(void *fdt, unsigned long start, unsigned long size); |
a0458284 TJB |
114 | #endif /* CONFIG_KEXEC_FILE */ |
115 | ||
da665885 | 116 | #else /* !CONFIG_KEXEC_CORE */ |
c0ce7d08 | 117 | static inline void crash_kexec_secondary(struct pt_regs *regs) { } |
2babf5c2 ME |
118 | |
119 | static inline int overlaps_crashkernel(unsigned long start, unsigned long size) | |
120 | { | |
121 | return 0; | |
122 | } | |
39931e41 | 123 | |
35dd5432 ME |
124 | static inline void reserve_crashkernel(void) { ; } |
125 | ||
aee10c61 AB |
126 | static inline int crash_shutdown_register(crash_shutdown_t handler) |
127 | { | |
128 | return 0; | |
129 | } | |
130 | ||
131 | static inline int crash_shutdown_unregister(crash_shutdown_t handler) | |
132 | { | |
133 | return 0; | |
134 | } | |
135 | ||
c1caae3d HB |
136 | static inline bool kdump_in_progress(void) |
137 | { | |
138 | return false; | |
139 | } | |
140 | ||
da665885 | 141 | #endif /* CONFIG_KEXEC_CORE */ |
2babf5c2 | 142 | #endif /* ! __ASSEMBLY__ */ |
88ced031 | 143 | #endif /* __KERNEL__ */ |
e1df870d | 144 | #endif /* _ASM_POWERPC_KEXEC_H */ |