diff options
| author | Vasant Hegde <hegdevasant@linux.vnet.ibm.com> | 2014-08-09 11:15:45 +0530 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2014-08-13 15:13:45 +1000 |
| commit | b09c2ec4082c63584491f35df2cb530ee8ca312d (patch) | |
| tree | 05200fb46b8c6839065a64e148a9b01813f5de54 /arch/powerpc/include/asm/opal.h | |
| parent | 14c4000a88afaaa2d0877cc86d42a74fde0f35e0 (diff) | |
powerpc/powernv: Interface to register/unregister opal dump region
PowerNV platform is capable of capturing host memory region when system
crashes (because of host/firmware). We have new OPAL API to register/
unregister memory region to be captured when system crashes.
This patch adds support for new API. Also during boot time we register
kernel log buffer and unregister before doing kexec.
Signed-off-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/include/asm/opal.h')
| -rw-r--r-- | arch/powerpc/include/asm/opal.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/opal.h b/arch/powerpc/include/asm/opal.h index b2f8ce1fd0d7..86055e598269 100644 --- a/arch/powerpc/include/asm/opal.h +++ b/arch/powerpc/include/asm/opal.h @@ -149,6 +149,8 @@ struct opal_sg_list { #define OPAL_DUMP_INFO2 94 #define OPAL_PCI_EEH_FREEZE_SET 97 #define OPAL_HANDLE_HMI 98 +#define OPAL_REGISTER_DUMP_REGION 101 +#define OPAL_UNREGISTER_DUMP_REGION 102 #ifndef __ASSEMBLY__ @@ -920,6 +922,8 @@ int64_t opal_set_param(uint64_t token, uint32_t param_id, uint64_t buffer, uint64_t length); int64_t opal_sensor_read(uint32_t sensor_hndl, int token, __be32 *sensor_data); int64_t opal_handle_hmi(void); +int64_t opal_register_dump_region(uint32_t id, uint64_t start, uint64_t end); +int64_t opal_unregister_dump_region(uint32_t id); /* Internal functions */ extern int early_init_dt_scan_opal(unsigned long node, const char *uname, @@ -974,6 +978,13 @@ struct opal_sg_list *opal_vmalloc_to_sg_list(void *vmalloc_addr, unsigned long vmalloc_size); void opal_free_sg_list(struct opal_sg_list *sg); +/* + * Dump region ID range usable by the OS + */ +#define OPAL_DUMP_REGION_HOST_START 0x80 +#define OPAL_DUMP_REGION_LOG_BUF 0x80 +#define OPAL_DUMP_REGION_HOST_END 0xFF + #endif /* __ASSEMBLY__ */ #endif /* __OPAL_H */ |