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powerpc/fadump: register kernel metadata address with opal

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OPAL allows registering address with it in the first kernel and
retrieving it after MPIPL. Setup kernel metadata and register its
address with OPAL to use it for processing the crash dump.

Signed-off-by: Hari Bathini <hbathini@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/156821345011.5656.13567765019032928471.stgit@hbathini.in.ibm.com
This commit is contained in:
Hari Bathini
2019-09-11 20:20:57 +05:30
committed by Michael Ellerman
parent 6abec12c65
commit 742a265acc
4 changed files with 146 additions and 4 deletions
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4
arch/powerpc/include/asm/fadump-internal.h
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@@ -97,6 +97,8 @@ struct fw_dump {
unsigned long cpu_notes_buf_vaddr;
unsigned long cpu_notes_buf_size;
u64 kernel_metadata;
int ibm_configure_kernel_dump;
unsigned long fadump_enabled:1;
@@ -110,6 +112,8 @@ struct fw_dump {
struct fadump_ops {
u64 (*fadump_init_mem_struct)(struct fw_dump *fadump_conf);
u64 (*fadump_get_metadata_size)(void);
int (*fadump_setup_metadata)(struct fw_dump *fadump_conf);
int (*fadump_register)(struct fw_dump *fadump_conf);
int (*fadump_unregister)(struct fw_dump *fadump_conf);
int (*fadump_invalidate)(struct fw_dump *fadump_conf);