From 7aa1c8f47e7e792d11f898cbdddaf6fa21ff08cc Mon Sep 17 00:00:00 2001 From: Ralf Baechle Date: Thu, 11 Oct 2012 18:14:58 +0200 Subject: MIPS: kdump: Add support [ralf@linux-mips.org: Original patch by Maxim Uvarov with plenty of further shining, polishing, debugging and testing by me.] Signed-off-by: Maxim Uvarov 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 --- arch/mips/include/asm/kexec.h | 27 ++++++++++++++++++++++++--- 1 file changed, 24 insertions(+), 3 deletions(-) (limited to 'arch/mips/include/asm/kexec.h') 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 + /* 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 */ -- cgit v1.1