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106 lines
2.8 KiB
106 lines
2.8 KiB
#ifndef _ASM_POWERPC_KEXEC_H |
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#define _ASM_POWERPC_KEXEC_H |
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#ifdef __KERNEL__ |
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/* |
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* Maximum page that is mapped directly into kernel memory. |
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* XXX: Since we copy virt we can use any page we allocate |
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*/ |
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#define KEXEC_SOURCE_MEMORY_LIMIT (-1UL) |
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/* |
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* Maximum address we can reach in physical address mode. |
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* XXX: I want to allow initrd in highmem. Otherwise set to rmo on LPAR. |
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*/ |
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#define KEXEC_DESTINATION_MEMORY_LIMIT (-1UL) |
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/* Maximum address we can use for the control code buffer */ |
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#ifdef __powerpc64__ |
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#define KEXEC_CONTROL_MEMORY_LIMIT (-1UL) |
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#else |
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/* TASK_SIZE, probably left over from use_mm ?? */ |
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#define KEXEC_CONTROL_MEMORY_LIMIT TASK_SIZE |
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#endif |
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#define KEXEC_CONTROL_PAGE_SIZE 4096 |
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/* The native architecture */ |
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#ifdef __powerpc64__ |
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#define KEXEC_ARCH KEXEC_ARCH_PPC64 |
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#else |
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#define KEXEC_ARCH KEXEC_ARCH_PPC |
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#endif |
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#define KEXEC_STATE_NONE 0 |
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#define KEXEC_STATE_IRQS_OFF 1 |
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#define KEXEC_STATE_REAL_MODE 2 |
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#ifndef __ASSEMBLY__ |
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#include <linux/cpumask.h> |
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#include <asm/reg.h> |
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typedef void (*crash_shutdown_t)(void); |
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#ifdef CONFIG_KEXEC |
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/* |
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* This function is responsible for capturing register states if coming |
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* via panic or invoking dump using sysrq-trigger. |
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*/ |
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static inline void crash_setup_regs(struct pt_regs *newregs, |
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struct pt_regs *oldregs) |
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{ |
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if (oldregs) |
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memcpy(newregs, oldregs, sizeof(*newregs)); |
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else |
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ppc_save_regs(newregs); |
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} |
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extern void kexec_smp_wait(void); /* get and clear naca physid, wait for |
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master to copy new code to 0 */ |
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extern int crashing_cpu; |
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extern void crash_send_ipi(void (*crash_ipi_callback)(struct pt_regs *)); |
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extern cpumask_t cpus_in_sr; |
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static inline int kexec_sr_activated(int cpu) |
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{ |
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return cpu_isset(cpu,cpus_in_sr); |
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} |
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struct kimage; |
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struct pt_regs; |
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extern void default_machine_kexec(struct kimage *image); |
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extern int default_machine_kexec_prepare(struct kimage *image); |
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extern void default_machine_crash_shutdown(struct pt_regs *regs); |
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extern int crash_shutdown_register(crash_shutdown_t handler); |
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extern int crash_shutdown_unregister(crash_shutdown_t handler); |
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extern void machine_kexec_simple(struct kimage *image); |
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extern void crash_kexec_secondary(struct pt_regs *regs); |
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extern int overlaps_crashkernel(unsigned long start, unsigned long size); |
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extern void reserve_crashkernel(void); |
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#else /* !CONFIG_KEXEC */ |
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static inline int kexec_sr_activated(int cpu) { return 0; } |
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static inline void crash_kexec_secondary(struct pt_regs *regs) { } |
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static inline int overlaps_crashkernel(unsigned long start, unsigned long size) |
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{ |
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return 0; |
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} |
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static inline void reserve_crashkernel(void) { ; } |
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static inline int crash_shutdown_register(crash_shutdown_t handler) |
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{ |
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return 0; |
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} |
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static inline int crash_shutdown_unregister(crash_shutdown_t handler) |
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{ |
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return 0; |
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} |
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#endif /* CONFIG_KEXEC */ |
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#endif /* ! __ASSEMBLY__ */ |
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#endif /* __KERNEL__ */ |
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#endif /* _ASM_POWERPC_KEXEC_H */
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