diff options
| author | Ralf Baechle <ralf@linux-mips.org> | 2012-10-25 16:23:31 +0200 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2012-12-13 17:00:39 +0100 |
| commit | abe77f90dc9c65a7c9a4d61c2cbb8db4d5566e4f (patch) | |
| tree | 69fd0cfe31a9041e8e1a881829c011892075ea2c /arch/mips/kernel | |
| parent | 7aa1c8f47e7e792d11f898cbdddaf6fa21ff08cc (diff) | |
MIPS: Octeon: Add kexec and kdump 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/1026/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/kernel')
| -rw-r--r-- | arch/mips/kernel/crash_dump.c | 2 | ||||
| -rw-r--r-- | arch/mips/kernel/relocate_kernel.S | 19 |
2 files changed, 19 insertions, 2 deletions
diff --git a/arch/mips/kernel/crash_dump.c b/arch/mips/kernel/crash_dump.c index d9ec3898f9f..35bed0d2342 100644 --- a/arch/mips/kernel/crash_dump.c +++ b/arch/mips/kernel/crash_dump.c @@ -3,8 +3,6 @@ #include <linux/crash_dump.h> #include <asm/uaccess.h> -unsigned long long elfcorehdr_addr = ELFCORE_ADDR_MAX; - static int __init parse_savemaxmem(char *p) { if (p) diff --git a/arch/mips/kernel/relocate_kernel.S b/arch/mips/kernel/relocate_kernel.S index 0b108587f06..e4142c5f7c2 100644 --- a/arch/mips/kernel/relocate_kernel.S +++ b/arch/mips/kernel/relocate_kernel.S @@ -78,7 +78,19 @@ done: LONG_S zero,(t0) #endif +#ifdef CONFIG_CPU_CAVIUM_OCTEON + /* We need to flush I-cache before jumping to new kernel. + * Unfortunatelly, this code is cpu-specific. + */ + .set push + .set noreorder + syncw + syncw + synci 0($0) + .set pop +#else sync +#endif /* jump to kexec_start_address */ j s1 END(relocate_new_kernel) @@ -110,7 +122,14 @@ LEAF(kexec_smp_wait) 1: LONG_L s0, (t0) bne s0, zero,1b +#ifdef CONFIG_CPU_CAVIUM_OCTEON + .set push + .set noreorder + synci 0($0) + .set pop +#else sync +#endif j s1 END(kexec_smp_wait) #endif |