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_PAGE_SIZE 4096 25 26 /* The native architecture */ 27 #define KEXEC_ARCH KEXEC_ARCH_SH 28 29 #ifdef CONFIG_KEXEC 30 /* arch/sh/kernel/machine_kexec.c */ 31 void reserve_crashkernel(void); 32 33 static inline void crash_setup_regs(struct pt_regs *newregs, 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])); 55 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 } 66 #else 67 static inline void reserve_crashkernel(void) { } 68 #endif /* CONFIG_KEXEC */ 69 70 #endif /* __ASM_SH_KEXEC_H */ 71