projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 4d5ade5b PM |
2 | #ifndef __ASM_SH_KEXEC_H |
| 3 | #define __ASM_SH_KEXEC_H | |
| 4 | ||
| 5 | #include <asm/ptrace.h> | |
| 6 | #include <asm/string.h> | |
| 9d44190e | 7 | |
| 8 | /* | |
| 9 | * KEXEC_SOURCE_MEMORY_LIMIT maximum page get_free_page can return. | |
| 10 | * I.e. Maximum page that is mapped directly into kernel memory, | |
| 11 | * and kmap is not required. | |
| 12 | * | |
| 13 | * Someone correct me if FIXADDR_START - PAGEOFFSET is not the correct | |
| 14 | * calculation for the amount of memory directly mappable into the | |
| 15 | * kernel memory space. | |
| 16 | */ | |
| 17 | ||
| 18 | /* Maximum physical address we can use pages from */ | |
| 19 | #define KEXEC_SOURCE_MEMORY_LIMIT (-1UL) | |
| 20 | /* Maximum address we can reach in physical address mode */ | |
| 21 | #define KEXEC_DESTINATION_MEMORY_LIMIT (-1UL) | |
| 22 | /* Maximum address we can use for the control code buffer */ | |
| 23 | #define KEXEC_CONTROL_MEMORY_LIMIT TASK_SIZE | |
| 24 | ||
| 163f6876 | 25 | #define KEXEC_CONTROL_PAGE_SIZE 4096 |
| 9d44190e | 26 | |
| 27 | /* The native architecture */ | |
| 28 | #define KEXEC_ARCH KEXEC_ARCH_SH | |
| 29 | ||
| a5ec3950 PM |
30 | #ifdef CONFIG_KEXEC |
| 31 | /* arch/sh/kernel/machine_kexec.c */ | |
| 32 | void reserve_crashkernel(void); | |
| 33 | ||
| 9d549a7d | 34 | static inline void crash_setup_regs(struct pt_regs *newregs, |
| 4d5ade5b PM |
35 | struct pt_regs *oldregs) |
| 36 | { | |
| 37 | if (oldregs) | |
| 38 | memcpy(newregs, oldregs, sizeof(*newregs)); | |
| 39 | else { | |
| 40 | __asm__ __volatile__ ("mov r0, %0" : "=r" (newregs->regs[0])); | |
| 41 | __asm__ __volatile__ ("mov r1, %0" : "=r" (newregs->regs[1])); | |
| 42 | __asm__ __volatile__ ("mov r2, %0" : "=r" (newregs->regs[2])); | |
| 43 | __asm__ __volatile__ ("mov r3, %0" : "=r" (newregs->regs[3])); | |
| 44 | __asm__ __volatile__ ("mov r4, %0" : "=r" (newregs->regs[4])); | |
| 45 | __asm__ __volatile__ ("mov r5, %0" : "=r" (newregs->regs[5])); | |
| 46 | __asm__ __volatile__ ("mov r6, %0" : "=r" (newregs->regs[6])); | |
| 47 | __asm__ __volatile__ ("mov r7, %0" : "=r" (newregs->regs[7])); | |
| 48 | __asm__ __volatile__ ("mov r8, %0" : "=r" (newregs->regs[8])); | |
| 49 | __asm__ __volatile__ ("mov r9, %0" : "=r" (newregs->regs[9])); | |
| 50 | __asm__ __volatile__ ("mov r10, %0" : "=r" (newregs->regs[10])); | |
| 51 | __asm__ __volatile__ ("mov r11, %0" : "=r" (newregs->regs[11])); | |
| 52 | __asm__ __volatile__ ("mov r12, %0" : "=r" (newregs->regs[12])); | |
| 53 | __asm__ __volatile__ ("mov r13, %0" : "=r" (newregs->regs[13])); | |
| 54 | __asm__ __volatile__ ("mov r14, %0" : "=r" (newregs->regs[14])); | |
| 55 | __asm__ __volatile__ ("mov r15, %0" : "=r" (newregs->regs[15])); | |
| 56 | ||
| 57 | __asm__ __volatile__ ("sts pr, %0" : "=r" (newregs->pr)); | |
| 58 | __asm__ __volatile__ ("sts macl, %0" : "=r" (newregs->macl)); | |
| 59 | __asm__ __volatile__ ("sts mach, %0" : "=r" (newregs->mach)); | |
| 60 | ||
| 61 | __asm__ __volatile__ ("stc gbr, %0" : "=r" (newregs->gbr)); | |
| 62 | __asm__ __volatile__ ("stc sr, %0" : "=r" (newregs->sr)); | |
| 9d44190e | 63 | |
| 4d5ade5b PM |
64 | newregs->pc = (unsigned long)current_text_addr(); |
| 65 | } | |
| 66 | } | |
| a5ec3950 PM |
67 | #else |
| 68 | static inline void reserve_crashkernel(void) { } | |
| 69 | #endif /* CONFIG_KEXEC */ | |
| 70 | ||
| 4d5ade5b | 71 | #endif /* __ASM_SH_KEXEC_H */ |