powerpc/powernv: Add pstore support on powernv
This patch extends pstore, a generic interface to platform dependent
persistent storage, support for powernv platform to capture certain
useful information, during dying moments. Such support is already in
place for pseries platform. This patch re-uses most of that code.
It is a common practice to compile kernels with both CONFIG_PPC_PSERIES=y
and CONFIG_PPC_POWERNV=y. The code in nvram_init_oops_partition() routine
still works as intended, as the caller is platform specific code which
passes the appropriate value for "rtas_partition_exists" parameter.
In all other places, where CONFIG_PPC_PSERIES or CONFIG_PPC_POWERNV
flag is used in this patchset, it is to reduce the kernel size in cases
where this flag is not set and doesn't have any impact logic wise.
Signed-off-by: Hari Bathini <hbathini@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
diff --git a/arch/powerpc/platforms/powernv/opal-nvram.c b/arch/powerpc/platforms/powernv/opal-nvram.c
index f9896fd..9db4398 100644
--- a/arch/powerpc/platforms/powernv/opal-nvram.c
+++ b/arch/powerpc/platforms/powernv/opal-nvram.c
@@ -16,6 +16,7 @@
#include <linux/of.h>
#include <asm/opal.h>
+#include <asm/nvram.h>
#include <asm/machdep.h>
static unsigned int nvram_size;
@@ -62,6 +63,15 @@
return count;
}
+static int __init opal_nvram_init_log_partitions(void)
+{
+ /* Scan nvram for partitions */
+ nvram_scan_partitions();
+ nvram_init_oops_partition(0);
+ return 0;
+}
+machine_arch_initcall(powernv, opal_nvram_init_log_partitions);
+
void __init opal_nvram_init(void)
{
struct device_node *np;