1 #ifndef _ASM_POWERPC_KEXEC_H
2 #define _ASM_POWERPC_KEXEC_H
6 * Maximum page that is mapped directly into kernel memory.
7 * XXX: Since we copy virt we can use any page we allocate
9 #define KEXEC_SOURCE_MEMORY_LIMIT (-1UL)
12 * Maximum address we can reach in physical address mode.
13 * XXX: I want to allow initrd in highmem. Otherwise set to rmo on LPAR.
15 #define KEXEC_DESTINATION_MEMORY_LIMIT (-1UL)
17 /* Maximum address we can use for the control code buffer */
19 #define KEXEC_CONTROL_MEMORY_LIMIT (-1UL)
21 /* TASK_SIZE, probably left over from use_mm ?? */
22 #define KEXEC_CONTROL_MEMORY_LIMIT TASK_SIZE
25 #define KEXEC_CONTROL_CODE_SIZE 4096
27 /* The native architecture */
29 #define KEXEC_ARCH KEXEC_ARCH_PPC64
31 #define KEXEC_ARCH KEXEC_ARCH_PPC
38 * This function is responsible for capturing register states if coming
39 * via panic or invoking dump using sysrq-trigger.
41 static inline void crash_setup_regs(struct pt_regs *newregs,
42 struct pt_regs *oldregs)
45 memcpy(newregs, oldregs, sizeof(*newregs));
47 /* FIXME Merge this with xmon_save_regs ?? */
48 unsigned long tmp1, tmp2;
49 __asm__ __volatile__ (
94 : "=&r" (tmp1), "=&r" (tmp2)
100 * Provide a dummy definition to avoid build failures. Will remain
101 * empty till crash dump support is enabled.
103 static inline void crash_setup_regs(struct pt_regs *newregs,
104 struct pt_regs *oldregs) { }
105 #endif /* !__powerpc64 __ */
108 #define MAX_NOTE_BYTES 1024
111 extern void kexec_smp_wait(void); /* get and clear naca physid, wait for
112 master to copy new code to 0 */
113 extern void __init kexec_setup(void);
114 extern int crashing_cpu;
115 extern void crash_send_ipi(void (*crash_ipi_callback)(struct pt_regs *));
116 #endif /* __powerpc64 __ */
120 extern void default_machine_kexec(struct kimage *image);
121 extern int default_machine_kexec_prepare(struct kimage *image);
122 extern void default_machine_crash_shutdown(struct pt_regs *regs);
124 #endif /* ! __ASSEMBLY__ */
125 #endif /* CONFIG_KEXEC */
126 #endif /* __KERNEL__ */
127 #endif /* _ASM_POWERPC_KEXEC_H */