diff options
| author | Eric Cooper <ecc@cmu.edu> | 2011-02-02 17:16:09 -0500 |
|---|---|---|
| committer | Nicolas Pitre <nico@fluxnic.net> | 2011-03-03 16:26:55 -0500 |
| commit | 868d172b8ac23070418ec6265195e88e8d5dbe92 (patch) | |
| tree | 7e7b0b853c92c6ed96c8d61828ab0c4fe3cd4cb4 | |
| parent | e25bac968d41d994e5295f89547bdff6cb40588a (diff) | |
[ARM] add machine-specific hook to machine_kexec
Provide the option to call a machine-specific function
before kexec'ing a new kernel.
Signed-off-by: Eric Cooper <ecc@cmu.edu>
Signed-off-by: Nicolas Pitre <nico@fluxnic.net>
| -rw-r--r-- | arch/arm/include/asm/kexec.h | 3 | ||||
| -rw-r--r-- | arch/arm/kernel/machine_kexec.c | 7 |
2 files changed, 10 insertions, 0 deletions
diff --git a/arch/arm/include/asm/kexec.h b/arch/arm/include/asm/kexec.h index c0094d8edae4..c2b9b4bdec00 100644 --- a/arch/arm/include/asm/kexec.h +++ b/arch/arm/include/asm/kexec.h @@ -50,6 +50,9 @@ static inline void crash_setup_regs(struct pt_regs *newregs, } } +/* Function pointer to optional machine-specific reinitialization */ +extern void (*kexec_reinit)(void); + #endif /* __ASSEMBLY__ */ #endif /* CONFIG_KEXEC */ diff --git a/arch/arm/kernel/machine_kexec.c b/arch/arm/kernel/machine_kexec.c index 30ead135ff5f..e59bbd496c39 100644 --- a/arch/arm/kernel/machine_kexec.c +++ b/arch/arm/kernel/machine_kexec.c @@ -75,6 +75,11 @@ void machine_crash_shutdown(struct pt_regs *regs) printk(KERN_INFO "Loading crashdump kernel...\n"); } +/* + * Function pointer to optional machine-specific reinitialization + */ +void (*kexec_reinit)(void); + void machine_kexec(struct kimage *image) { unsigned long page_list; @@ -104,6 +109,8 @@ void machine_kexec(struct kimage *image) (unsigned long) reboot_code_buffer + KEXEC_CONTROL_PAGE_SIZE); printk(KERN_INFO "Bye!\n"); + if (kexec_reinit) + kexec_reinit(); local_irq_disable(); local_fiq_disable(); setup_mm_for_reboot(0); /* mode is not used, so just pass 0*/ |