72 lines
2.6 KiB
C
72 lines
2.6 KiB
C
|
/* SPDX-License-Identifier: GPL-2.0 */
|
||
|
|
#ifndef __ASM_SH_KEXEC_H
|
||
|
|
#define __ASM_SH_KEXEC_H
|
||
|
|
|
||
|
|
#include <asm/ptrace.h>
|
||
|
|
#include <asm/string.h>
|
||
|
|
|
||
|
|
/*
|
||
|
|
* KEXEC_SOURCE_MEMORY_LIMIT maximum page get_free_page can return.
|
||
|
|
* I.e. Maximum page that is mapped directly into kernel memory,
|
||
|
|
* and kmap is not required.
|
||
|
|
*
|
||
|
|
* Someone correct me if FIXADDR_START - PAGEOFFSET is not the correct
|
||
|
|
* calculation for the amount of memory directly mappable into the
|
||
|
|
* kernel memory space.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/* Maximum physical address we can use pages from */
|
||
|
|
#define KEXEC_SOURCE_MEMORY_LIMIT (-1UL)
|
||
|
|
/* Maximum address we can reach in physical address mode */
|
||
|
|
#define KEXEC_DESTINATION_MEMORY_LIMIT (-1UL)
|
||
|
|
/* Maximum address we can use for the control code buffer */
|
||
|
|
#define KEXEC_CONTROL_MEMORY_LIMIT TASK_SIZE
|
||
|
|
|
||
|
|
#define KEXEC_CONTROL_PAGE_SIZE 4096
|
||
|
|
|
||
|
|
/* The native architecture */
|
||
|
|
#define KEXEC_ARCH KEXEC_ARCH_SH
|
||
|
|
|
||
|
|
#ifdef CONFIG_KEXEC
|
||
|
|
/* arch/sh/kernel/machine_kexec.c */
|
||
|
|
void reserve_crashkernel(void);
|
||
|
|
|
||
|
|
static inline void crash_setup_regs(struct pt_regs *newregs,
|
||
|
|
struct pt_regs *oldregs)
|
||
|
|
{
|
||
|
|
if (oldregs)
|
||
|
|
memcpy(newregs, oldregs, sizeof(*newregs));
|
||
|
|
else {
|
||
|
|
__asm__ __volatile__ ("mov r0, %0" : "=r" (newregs->regs[0]));
|
||
|
|
__asm__ __volatile__ ("mov r1, %0" : "=r" (newregs->regs[1]));
|
||
|
|
__asm__ __volatile__ ("mov r2, %0" : "=r" (newregs->regs[2]));
|
||
|
|
__asm__ __volatile__ ("mov r3, %0" : "=r" (newregs->regs[3]));
|
||
|
|
__asm__ __volatile__ ("mov r4, %0" : "=r" (newregs->regs[4]));
|
||
|
|
__asm__ __volatile__ ("mov r5, %0" : "=r" (newregs->regs[5]));
|
||
|
|
__asm__ __volatile__ ("mov r6, %0" : "=r" (newregs->regs[6]));
|
||
|
|
__asm__ __volatile__ ("mov r7, %0" : "=r" (newregs->regs[7]));
|
||
|
|
__asm__ __volatile__ ("mov r8, %0" : "=r" (newregs->regs[8]));
|
||
|
|
__asm__ __volatile__ ("mov r9, %0" : "=r" (newregs->regs[9]));
|
||
|
|
__asm__ __volatile__ ("mov r10, %0" : "=r" (newregs->regs[10]));
|
||
|
|
__asm__ __volatile__ ("mov r11, %0" : "=r" (newregs->regs[11]));
|
||
|
|
__asm__ __volatile__ ("mov r12, %0" : "=r" (newregs->regs[12]));
|
||
|
|
__asm__ __volatile__ ("mov r13, %0" : "=r" (newregs->regs[13]));
|
||
|
|
__asm__ __volatile__ ("mov r14, %0" : "=r" (newregs->regs[14]));
|
||
|
|
__asm__ __volatile__ ("mov r15, %0" : "=r" (newregs->regs[15]));
|
||
|
|
|
||
|
|
__asm__ __volatile__ ("sts pr, %0" : "=r" (newregs->pr));
|
||
|
|
__asm__ __volatile__ ("sts macl, %0" : "=r" (newregs->macl));
|
||
|
|
__asm__ __volatile__ ("sts mach, %0" : "=r" (newregs->mach));
|
||
|
|
|
||
|
|
__asm__ __volatile__ ("stc gbr, %0" : "=r" (newregs->gbr));
|
||
|
|
__asm__ __volatile__ ("stc sr, %0" : "=r" (newregs->sr));
|
||
|
|
|
||
|
|
newregs->pc = (unsigned long)current_text_addr();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
#else
|
||
|
|
static inline void reserve_crashkernel(void) { }
|
||
|
|
#endif /* CONFIG_KEXEC */
|
||
|
|
|
||
|
|
#endif /* __ASM_SH_KEXEC_H */
|