diff options
| author | Ralf Baechle <ralf@linux-mips.org> | 2012-10-11 16:14:58 (GMT) |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2012-12-13 15:46:47 (GMT) |
| commit | 7aa1c8f47e7e792d11f898cbdddaf6fa21ff08cc (patch) | |
| tree | e34986c087ab7a9f91c8303eda7f13736e315905 /arch/mips/include | |
| parent | 98cdee0eae861e8d25c147a72c5f309e883f4ed8 (diff) | |
| download | linux-7aa1c8f47e7e792d11f898cbdddaf6fa21ff08cc.tar.xz | |
MIPS: kdump: Add support
[ralf@linux-mips.org: Original patch by Maxim Uvarov <muvarov@gmail.com>
with plenty of further shining, polishing, debugging and testing by me.]
Signed-off-by: Maxim Uvarov <muvarov@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: kexec@lists.infradead.org
Cc: horms@verge.net.au
Patchwork: https://patchwork.linux-mips.org/patch/1025/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/include')
| -rw-r--r-- | arch/mips/include/asm/kexec.h | 27 | ||||
| -rw-r--r-- | arch/mips/include/asm/smp.h | 6 |
2 files changed, 30 insertions, 3 deletions
diff --git a/arch/mips/include/asm/kexec.h b/arch/mips/include/asm/kexec.h index 4314892..ee25ebb 100644 --- a/arch/mips/include/asm/kexec.h +++ b/arch/mips/include/asm/kexec.h @@ -9,22 +9,43 @@ #ifndef _MIPS_KEXEC # define _MIPS_KEXEC +#include <asm/stacktrace.h> + /* Maximum physical address we can use pages from */ #define KEXEC_SOURCE_MEMORY_LIMIT (0x20000000) /* Maximum address we can reach in physical address mode */ #define KEXEC_DESTINATION_MEMORY_LIMIT (0x20000000) /* Maximum address we can use for the control code buffer */ #define KEXEC_CONTROL_MEMORY_LIMIT (0x20000000) - -#define KEXEC_CONTROL_PAGE_SIZE 4096 +/* Reserve 3*4096 bytes for board-specific info */ +#define KEXEC_CONTROL_PAGE_SIZE (4096 + 3*4096) /* The native architecture */ #define KEXEC_ARCH KEXEC_ARCH_MIPS +#define MAX_NOTE_BYTES 1024 static inline void crash_setup_regs(struct pt_regs *newregs, struct pt_regs *oldregs) { - /* Dummy implementation for now */ + if (oldregs) + memcpy(newregs, oldregs, sizeof(*newregs)); + else + prepare_frametrace(newregs); } +#ifdef CONFIG_KEXEC +struct kimage; +extern unsigned long kexec_args[4]; +extern int (*_machine_kexec_prepare)(struct kimage *); +extern void (*_machine_kexec_shutdown)(void); +extern void (*_machine_crash_shutdown)(struct pt_regs *regs); +extern void default_machine_crash_shutdown(struct pt_regs *regs); +#ifdef CONFIG_SMP +extern const unsigned char kexec_smp_wait[]; +extern unsigned long secondary_kexec_args[4]; +extern void (*relocated_kexec_smp_wait) (void *); +extern atomic_t kexec_ready_to_reboot; +#endif +#endif + #endif /* !_MIPS_KEXEC */ diff --git a/arch/mips/include/asm/smp.h b/arch/mips/include/asm/smp.h index d4fb4d8..f33b5fd 100644 --- a/arch/mips/include/asm/smp.h +++ b/arch/mips/include/asm/smp.h @@ -40,6 +40,8 @@ extern int __cpu_logical_map[NR_CPUS]; #define SMP_CALL_FUNCTION 0x2 /* Octeon - Tell another core to flush its icache */ #define SMP_ICACHE_FLUSH 0x4 +/* Used by kexec crashdump to save all cpu's state */ +#define SMP_DUMP 0x8 extern volatile cpumask_t cpu_callin_map; @@ -91,4 +93,8 @@ static inline void arch_send_call_function_ipi_mask(const struct cpumask *mask) mp_ops->send_ipi_mask(mask, SMP_CALL_FUNCTION); } +#if defined(CONFIG_KEXEC) +extern void (*dump_ipi_function_ptr)(void *); +void dump_send_ipi(void (*dump_ipi_callback)(void *)); +#endif #endif /* __ASM_SMP_H */ |