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review.evervolv.com / android_kernel_oneplus_msm8996 / 1d738e64f3d957d56c1b51e64ebdef986a8760e3 / . / arch / sh / include / asm / kexec.h
blob: ad6ef8a275ee98c7a413cf4bed3aa3f0c7505657 [file] [log] [blame]
Paul Mundt4d5ade52007-04-27 11:25:57 +0900[diff] [blame]1#ifndef __ASM_SH_KEXEC_H
2#define __ASM_SH_KEXEC_H
3
4#include <asm/ptrace.h>
5#include <asm/string.h>
kogiidena9d441902006-01-16 22:14:10 -0800[diff] [blame]6
7/*
8 * KEXEC_SOURCE_MEMORY_LIMIT maximum page get_free_page can return.
9 * I.e. Maximum page that is mapped directly into kernel memory,
10 * and kmap is not required.
11 *
12 * Someone correct me if FIXADDR_START - PAGEOFFSET is not the correct
13 * calculation for the amount of memory directly mappable into the
14 * kernel memory space.
15 */
16
17/* Maximum physical address we can use pages from */
18#define KEXEC_SOURCE_MEMORY_LIMIT (-1UL)
19/* Maximum address we can reach in physical address mode */
20#define KEXEC_DESTINATION_MEMORY_LIMIT (-1UL)
21/* Maximum address we can use for the control code buffer */
22#define KEXEC_CONTROL_MEMORY_LIMIT TASK_SIZE
23
Huang Ying163f6872008-08-15 00:40:22 -0700[diff] [blame]24#define KEXEC_CONTROL_PAGE_SIZE 4096
kogiidena9d441902006-01-16 22:14:10 -0800[diff] [blame]25
26/* The native architecture */
27#define KEXEC_ARCH KEXEC_ARCH_SH
28
Paul Mundta5ec3952010-05-07 14:54:55 +0900[diff] [blame]29#ifdef CONFIG_KEXEC
30/* arch/sh/kernel/machine_kexec.c */
31void reserve_crashkernel(void);
32
Paul Mundt9d549a72006-09-27 18:26:05 +0900[diff] [blame]33static inline void crash_setup_regs(struct pt_regs *newregs,
Paul Mundt4d5ade52007-04-27 11:25:57 +0900[diff] [blame]34 struct pt_regs *oldregs)
35{
36 if (oldregs)
37 memcpy(newregs, oldregs, sizeof(*newregs));
38 else {
39 __asm__ __volatile__ ("mov r0, %0" : "=r" (newregs->regs[0]));
40 __asm__ __volatile__ ("mov r1, %0" : "=r" (newregs->regs[1]));
41 __asm__ __volatile__ ("mov r2, %0" : "=r" (newregs->regs[2]));
42 __asm__ __volatile__ ("mov r3, %0" : "=r" (newregs->regs[3]));
43 __asm__ __volatile__ ("mov r4, %0" : "=r" (newregs->regs[4]));
44 __asm__ __volatile__ ("mov r5, %0" : "=r" (newregs->regs[5]));
45 __asm__ __volatile__ ("mov r6, %0" : "=r" (newregs->regs[6]));
46 __asm__ __volatile__ ("mov r7, %0" : "=r" (newregs->regs[7]));
47 __asm__ __volatile__ ("mov r8, %0" : "=r" (newregs->regs[8]));
48 __asm__ __volatile__ ("mov r9, %0" : "=r" (newregs->regs[9]));
49 __asm__ __volatile__ ("mov r10, %0" : "=r" (newregs->regs[10]));
50 __asm__ __volatile__ ("mov r11, %0" : "=r" (newregs->regs[11]));
51 __asm__ __volatile__ ("mov r12, %0" : "=r" (newregs->regs[12]));
52 __asm__ __volatile__ ("mov r13, %0" : "=r" (newregs->regs[13]));
53 __asm__ __volatile__ ("mov r14, %0" : "=r" (newregs->regs[14]));
54 __asm__ __volatile__ ("mov r15, %0" : "=r" (newregs->regs[15]));
kogiidena9d441902006-01-16 22:14:10 -0800[diff] [blame]55
Paul Mundt4d5ade52007-04-27 11:25:57 +0900[diff] [blame]56 __asm__ __volatile__ ("sts pr, %0" : "=r" (newregs->pr));
57 __asm__ __volatile__ ("sts macl, %0" : "=r" (newregs->macl));
58 __asm__ __volatile__ ("sts mach, %0" : "=r" (newregs->mach));
59
60 __asm__ __volatile__ ("stc gbr, %0" : "=r" (newregs->gbr));
61 __asm__ __volatile__ ("stc sr, %0" : "=r" (newregs->sr));
62
63 newregs->pc = (unsigned long)current_text_addr();
64 }
65}
Paul Mundta5ec3952010-05-07 14:54:55 +0900[diff] [blame]66#else
67static inline void reserve_crashkernel(void) { }
68#endif /* CONFIG_KEXEC */
69
Paul Mundt4d5ade52007-04-27 11:25:57 +0900[diff] [blame]70#endif /* __ASM_SH_KEXEC_H */