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#ifndef _ARM_KEXEC_H
#define _ARM_KEXEC_H
#ifdef CONFIG_KEXEC
/* 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 (-1UL)
#define KEXEC_CONTROL_PAGE_SIZE 4096
#define KEXEC_ARCH KEXEC_ARCH_ARM
#define KEXEC_ARM_ATAGS_OFFSET 0x1000
#define KEXEC_ARM_ZIMAGE_OFFSET 0x8000
#ifndef __ASSEMBLY__
/**
* crash_setup_regs() - save registers for the panic kernel
* @newregs: registers are saved here
* @oldregs: registers to be saved (may be %NULL)
*
* Function copies machine registers from @oldregs to @newregs. If @oldregs is
* %NULL then current registers are stored there.
*/
static inline void crash_setup_regs(struct pt_regs *newregs,
struct pt_regs *oldregs)
{
if (oldregs) {
memcpy(newregs, oldregs, sizeof(*newregs));
} else {
__asm__ __volatile__ (
"stmia %[regs_base], {r0-r12}\n\t"
"mov %[_ARM_sp], sp\n\t"
"str lr, %[_ARM_lr]\n\t"
"adr %[_ARM_pc], 1f\n\t"
"mrs %[_ARM_cpsr], cpsr\n\t"
"1:"
: [_ARM_pc] "=r" (newregs->ARM_pc),
[_ARM_cpsr] "=r" (newregs->ARM_cpsr),
[_ARM_sp] "=r" (newregs->ARM_sp),
[_ARM_lr] "=o" (newregs->ARM_lr)
: [regs_base] "r" (&newregs->ARM_r0)
: "memory"
);
}
}
/* Function pointer to optional machine-specific reinitialization */
extern void (*kexec_reinit)(void);
#endif /* __ASSEMBLY__ */
#endif /* CONFIG_KEXEC */
#endif /* _ARM_KEXEC_H */