[v9,06/25] mem-map: Setup memory for MDRT table
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Message ID 20190712111802.23560-7-hegdevasant@linux.vnet.ibm.com
State Accepted
Headers show
  • MPIPL support
Related show


Context Check Description
snowpatch_ozlabs/snowpatch_job_snowpatch-skiboot-dco success Signed-off-by present
snowpatch_ozlabs/snowpatch_job_snowpatch-skiboot success Test snowpatch/job/snowpatch-skiboot on branch master
snowpatch_ozlabs/apply_patch success Successfully applied on branch master (4db38a36b31045f0a116d388ddeac850b38c8680)

Commit Message

Vasant Hegde July 12, 2019, 11:17 a.m. UTC
Hostboot fills MDRT table after moving memory content from source to destination
memory. And OPAL relies on this table to extract the dump. We have to make sure
this table is intact. Hence define memory relative to SKIBOOT_BASE so that our
relocation doesn't overwrite this memory.

Signed-off-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com>
 include/mem-map.h | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

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diff --git a/include/mem-map.h b/include/mem-map.h
index d23953985..0e03932a1 100644
--- a/include/mem-map.h
+++ b/include/mem-map.h
@@ -102,11 +102,17 @@ 
 #define PSI_TCE_TABLE_BASE	(SKIBOOT_BASE + 0x01a00000)
 #define PSI_TCE_TABLE_SIZE_P8	0x00200000UL
+/* This is our dump result table after MPIPL. Hostboot will write to this
+ * memory after moving memory content from source to destination memory.
+ */
+#define MDRT_TABLE_BASE		(SKIBOOT_BASE + 0x01c00000)
+#define MDRT_TABLE_SIZE		0x00010000
 /* Total size of the above area
  * (Ensure this has at least a 64k alignment)
-#define SKIBOOT_SIZE		0x01c00000
+#define SKIBOOT_SIZE		0x01c10000
 /* We start laying out the CPU stacks from here, indexed by PIR
  * each stack is STACK_SIZE in size (naturally aligned power of