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c587e4a6 RP |
1 | #ifndef _ARM_KEXEC_H |
2 | #define _ARM_KEXEC_H | |
3 | ||
4 | #ifdef CONFIG_KEXEC | |
5 | ||
6 | /* Maximum physical address we can use pages from */ | |
7 | #define KEXEC_SOURCE_MEMORY_LIMIT (-1UL) | |
8 | /* Maximum address we can reach in physical address mode */ | |
9 | #define KEXEC_DESTINATION_MEMORY_LIMIT (-1UL) | |
10 | /* Maximum address we can use for the control code buffer */ | |
5ce94e9e | 11 | #define KEXEC_CONTROL_MEMORY_LIMIT (-1UL) |
c587e4a6 | 12 | |
163f6876 | 13 | #define KEXEC_CONTROL_PAGE_SIZE 4096 |
c587e4a6 RP |
14 | |
15 | #define KEXEC_ARCH KEXEC_ARCH_ARM | |
16 | ||
4cd9d6f7 RP |
17 | #define KEXEC_ARM_ATAGS_OFFSET 0x1000 |
18 | #define KEXEC_ARM_ZIMAGE_OFFSET 0x8000 | |
19 | ||
c587e4a6 RP |
20 | #ifndef __ASSEMBLY__ |
21 | ||
24b776bf MW |
22 | /** |
23 | * crash_setup_regs() - save registers for the panic kernel | |
24 | * @newregs: registers are saved here | |
25 | * @oldregs: registers to be saved (may be %NULL) | |
26 | * | |
27 | * Function copies machine registers from @oldregs to @newregs. If @oldregs is | |
28 | * %NULL then current registers are stored there. | |
29 | */ | |
c587e4a6 | 30 | static inline void crash_setup_regs(struct pt_regs *newregs, |
24b776bf MW |
31 | struct pt_regs *oldregs) |
32 | { | |
33 | if (oldregs) { | |
34 | memcpy(newregs, oldregs, sizeof(*newregs)); | |
35 | } else { | |
36 | __asm__ __volatile__ ("stmia %0, {r0 - r15}" | |
0946b8c5 | 37 | : : "r" (&newregs->ARM_r0) : "memory"); |
24b776bf MW |
38 | __asm__ __volatile__ ("mrs %0, cpsr" |
39 | : "=r" (newregs->ARM_cpsr)); | |
40 | } | |
41 | } | |
c587e4a6 RP |
42 | |
43 | #endif /* __ASSEMBLY__ */ | |
44 | ||
45 | #endif /* CONFIG_KEXEC */ | |
46 | ||
47 | #endif /* _ARM_KEXEC_H */ |