1#ifndef _ARM_KEXEC_H 2#define _ARM_KEXEC_H 3 4#ifdef CONFIG_KEXEC 5 6/* Maximum physical address we can use pages from */ 7#define KEXEC_SOURCE_MEMORY_LIMIT (-1UL) 8/* Maximum address we can reach in physical address mode */ 9#define KEXEC_DESTINATION_MEMORY_LIMIT (-1UL) 10/* Maximum address we can use for the control code buffer */ 11#define KEXEC_CONTROL_MEMORY_LIMIT (-1UL) 12 13#define KEXEC_CONTROL_PAGE_SIZE 4096 14 15#define KEXEC_ARCH KEXEC_ARCH_ARM 16 17#define KEXEC_ARM_ATAGS_OFFSET 0x1000 18#define KEXEC_ARM_ZIMAGE_OFFSET 0x8000 19 20#ifndef __ASSEMBLY__ 21 22/** 23 * crash_setup_regs() - save registers for the panic kernel 24 * @newregs: registers are saved here 25 * @oldregs: registers to be saved (may be %NULL) 26 * 27 * Function copies machine registers from @oldregs to @newregs. If @oldregs is 28 * %NULL then current registers are stored there. 29 */ 30static inline void crash_setup_regs(struct pt_regs *newregs, 31 struct pt_regs *oldregs) 32{ 33 if (oldregs) { 34 memcpy(newregs, oldregs, sizeof(*newregs)); 35 } else { 36 __asm__ __volatile__ ("stmia %0, {r0 - r15}" 37 : : "r" (&newregs->ARM_r0)); 38 __asm__ __volatile__ ("mrs %0, cpsr" 39 : "=r" (newregs->ARM_cpsr)); 40 } 41} 42 43#endif /* __ASSEMBLY__ */ 44 45#endif /* CONFIG_KEXEC */ 46 47#endif /* _ARM_KEXEC_H */ 48