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1 | /* SPDX-License-Identifier: GPL-2.0 */ |
---|---|
2 | #ifndef __ASM_SH_KEXEC_H |
3 | #define __ASM_SH_KEXEC_H |
4 | |
5 | #include <asm/ptrace.h> |
6 | #include <asm/string.h> |
7 | #include <linux/kernel.h> |
8 | |
9 | /* |
10 | * KEXEC_SOURCE_MEMORY_LIMIT maximum page get_free_page can return. |
11 | * I.e. Maximum page that is mapped directly into kernel memory, |
12 | * and kmap is not required. |
13 | * |
14 | * Someone correct me if FIXADDR_START - PAGEOFFSET is not the correct |
15 | * calculation for the amount of memory directly mappable into the |
16 | * kernel memory space. |
17 | */ |
18 | |
19 | /* Maximum physical address we can use pages from */ |
20 | #define KEXEC_SOURCE_MEMORY_LIMIT (-1UL) |
21 | /* Maximum address we can reach in physical address mode */ |
22 | #define KEXEC_DESTINATION_MEMORY_LIMIT (-1UL) |
23 | /* Maximum address we can use for the control code buffer */ |
24 | #define KEXEC_CONTROL_MEMORY_LIMIT TASK_SIZE |
25 | |
26 | #define KEXEC_CONTROL_PAGE_SIZE 4096 |
27 | |
28 | /* The native architecture */ |
29 | #define KEXEC_ARCH KEXEC_ARCH_SH |
30 | |
31 | #ifdef CONFIG_KEXEC |
32 | /* arch/sh/kernel/machine_kexec.c */ |
33 | void reserve_crashkernel(void); |
34 | |
35 | static inline void crash_setup_regs(struct pt_regs *newregs, |
36 | struct pt_regs *oldregs) |
37 | { |
38 | if (oldregs) |
39 | memcpy(newregs, oldregs, sizeof(*newregs)); |
40 | else { |
41 | __asm__ __volatile__ ("mov r0, %0" : "=r" (newregs->regs[0])); |
42 | __asm__ __volatile__ ("mov r1, %0" : "=r" (newregs->regs[1])); |
43 | __asm__ __volatile__ ("mov r2, %0" : "=r" (newregs->regs[2])); |
44 | __asm__ __volatile__ ("mov r3, %0" : "=r" (newregs->regs[3])); |
45 | __asm__ __volatile__ ("mov r4, %0" : "=r" (newregs->regs[4])); |
46 | __asm__ __volatile__ ("mov r5, %0" : "=r" (newregs->regs[5])); |
47 | __asm__ __volatile__ ("mov r6, %0" : "=r" (newregs->regs[6])); |
48 | __asm__ __volatile__ ("mov r7, %0" : "=r" (newregs->regs[7])); |
49 | __asm__ __volatile__ ("mov r8, %0" : "=r" (newregs->regs[8])); |
50 | __asm__ __volatile__ ("mov r9, %0" : "=r" (newregs->regs[9])); |
51 | __asm__ __volatile__ ("mov r10, %0" : "=r" (newregs->regs[10])); |
52 | __asm__ __volatile__ ("mov r11, %0" : "=r" (newregs->regs[11])); |
53 | __asm__ __volatile__ ("mov r12, %0" : "=r" (newregs->regs[12])); |
54 | __asm__ __volatile__ ("mov r13, %0" : "=r" (newregs->regs[13])); |
55 | __asm__ __volatile__ ("mov r14, %0" : "=r" (newregs->regs[14])); |
56 | __asm__ __volatile__ ("mov r15, %0" : "=r" (newregs->regs[15])); |
57 | |
58 | __asm__ __volatile__ ("sts pr, %0" : "=r" (newregs->pr)); |
59 | __asm__ __volatile__ ("sts macl, %0" : "=r" (newregs->macl)); |
60 | __asm__ __volatile__ ("sts mach, %0" : "=r" (newregs->mach)); |
61 | |
62 | __asm__ __volatile__ ("stc gbr, %0" : "=r" (newregs->gbr)); |
63 | __asm__ __volatile__ ("stc sr, %0" : "=r" (newregs->sr)); |
64 | |
65 | newregs->pc = _THIS_IP_; |
66 | } |
67 | } |
68 | #else |
69 | static inline void reserve_crashkernel(void) { } |
70 | #endif /* CONFIG_KEXEC */ |
71 | |
72 | #endif /* __ASM_SH_KEXEC_H */ |
73 |
Warning: This file is not a C or C++ file. It does not have highlighting.