diff options
| author | Aruna Balakrishnaiah <aruna@linux.vnet.ibm.com> | 2013-06-06 00:22:20 +0530 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2013-06-20 17:05:02 +1000 |
| commit | a5e4797b0f46819a74a7233825137ed5d2f51b51 (patch) | |
| tree | 2b7df1fd50f6b046a259eb21d046c70dbb70a1d2 /arch/powerpc/platforms/pseries/nvram.c | |
| parent | f33f748c964f6a6ee272b1c794b52f54f4da1d04 (diff) | |
powerpc/pseries: Read common partition via pstore
This patch exploits pstore subsystem to read details of common partition
in NVRAM to a separate file in /dev/pstore. For instance, common partition
details will be stored in a file named [common-nvram-6].
Signed-off-by: Aruna Balakrishnaiah <aruna@linux.vnet.ibm.com>
Reviewed-by: Jim Keniston <jkenisto@us.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/platforms/pseries/nvram.c')
| -rw-r--r-- | arch/powerpc/platforms/pseries/nvram.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/arch/powerpc/platforms/pseries/nvram.c b/arch/powerpc/platforms/pseries/nvram.c index f7392f6ea7b3..14cc486709f6 100644 --- a/arch/powerpc/platforms/pseries/nvram.c +++ b/arch/powerpc/platforms/pseries/nvram.c @@ -138,10 +138,17 @@ static struct nvram_os_partition of_config_partition = { .os_partition = false }; +static struct nvram_os_partition common_partition = { + .name = "common", + .index = -1, + .os_partition = false +}; + static enum pstore_type_id nvram_type_ids[] = { PSTORE_TYPE_DMESG, PSTORE_TYPE_PPC_RTAS, PSTORE_TYPE_PPC_OF, + PSTORE_TYPE_PPC_COMMON, -1 }; static int read_type; @@ -530,7 +537,7 @@ static int nvram_pstore_write(enum pstore_type_id type, } /* - * Reads the oops/panic report, rtas and of-config partition. + * Reads the oops/panic report, rtas, of-config and common partition. * Returns the length of the data we read from each partition. * Returns 0 if we've been called before. */ @@ -566,6 +573,14 @@ static ssize_t nvram_pstore_read(u64 *id, enum pstore_type_id *type, time->tv_sec = 0; time->tv_nsec = 0; break; + case PSTORE_TYPE_PPC_COMMON: + sig = NVRAM_SIG_SYS; + part = &common_partition; + *type = PSTORE_TYPE_PPC_COMMON; + *id = PSTORE_TYPE_PPC_COMMON; + time->tv_sec = 0; + time->tv_nsec = 0; + break; default: return 0; } |