1#ifndef __ASM_SH_KEXEC_H
2#define __ASM_SH_KEXEC_H
3
4#include <asm/ptrace.h>
5#include <asm/string.h>
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
24#define KEXEC_CONTROL_CODE_SIZE	4096
25
26/* The native architecture */
27#define KEXEC_ARCH KEXEC_ARCH_SH
28
29static inline void crash_setup_regs(struct pt_regs *newregs,
30				    struct pt_regs *oldregs)
31{
32	if (oldregs)
33		memcpy(newregs, oldregs, sizeof(*newregs));
34	else {
35		__asm__ __volatile__ ("mov r0, %0" : "=r" (newregs->regs[0]));
36		__asm__ __volatile__ ("mov r1, %0" : "=r" (newregs->regs[1]));
37		__asm__ __volatile__ ("mov r2, %0" : "=r" (newregs->regs[2]));
38		__asm__ __volatile__ ("mov r3, %0" : "=r" (newregs->regs[3]));
39		__asm__ __volatile__ ("mov r4, %0" : "=r" (newregs->regs[4]));
40		__asm__ __volatile__ ("mov r5, %0" : "=r" (newregs->regs[5]));
41		__asm__ __volatile__ ("mov r6, %0" : "=r" (newregs->regs[6]));
42		__asm__ __volatile__ ("mov r7, %0" : "=r" (newregs->regs[7]));
43		__asm__ __volatile__ ("mov r8, %0" : "=r" (newregs->regs[8]));
44		__asm__ __volatile__ ("mov r9, %0" : "=r" (newregs->regs[9]));
45		__asm__ __volatile__ ("mov r10, %0" : "=r" (newregs->regs[10]));
46		__asm__ __volatile__ ("mov r11, %0" : "=r" (newregs->regs[11]));
47		__asm__ __volatile__ ("mov r12, %0" : "=r" (newregs->regs[12]));
48		__asm__ __volatile__ ("mov r13, %0" : "=r" (newregs->regs[13]));
49		__asm__ __volatile__ ("mov r14, %0" : "=r" (newregs->regs[14]));
50		__asm__ __volatile__ ("mov r15, %0" : "=r" (newregs->regs[15]));
51
52		__asm__ __volatile__ ("sts pr, %0" : "=r" (newregs->pr));
53		__asm__ __volatile__ ("sts macl, %0" : "=r" (newregs->macl));
54		__asm__ __volatile__ ("sts mach, %0" : "=r" (newregs->mach));
55
56		__asm__ __volatile__ ("stc gbr, %0" : "=r" (newregs->gbr));
57		__asm__ __volatile__ ("stc sr, %0" : "=r" (newregs->sr));
58
59		newregs->pc = (unsigned long)current_text_addr();
60	}
61}
62#endif /* __ASM_SH_KEXEC_H */
63