[Skiboot] [RFC PATCH 07/16] hdata: Add support for early OPAL crash

[Vasant Hegde]

Lets hardcode few entries in MDST and MDDT table.. so that we can capture
early OPAL crash. Note that we will have 1 to 1 mapping between MDST and
MDDT table entry.

Signed-off-by: Vasant Hegde <hegdevasant at linux.vnet.ibm.com>
---
 hdata/spira.c            | 54 ++++++++++++++++++++++++++++++++++++++++++++----
 hdata/test/hdata_to_dt.c |  1 +
 include/opal-dump.h      |  1 +
 3 files changed, 52 insertions(+), 4 deletions(-)

diff --git a/hdata/spira.c b/hdata/spira.c
index 43363278d..3bce046b3 100644
--- a/hdata/spira.c
+++ b/hdata/spira.c
@@ -89,7 +89,7 @@ __section(".cpuctrl.data") struct cpu_ctl_init_data cpu_ctl_init_data = {
  * addresses, we set the top bit to 1 on physical addresses
  */
 
-__section(".mdst.data") struct mdst_table init_mdst_table[2] = {
+__section(".mdst.data") struct mdst_table init_mdst_table[3] = {
 	{
 		.addr = CPU_TO_BE64(INMEM_CON_START | HRMOR_BIT),
 		.data_region = DUMP_REGION_CONSOLE,
@@ -102,6 +102,30 @@ __section(".mdst.data") struct mdst_table init_mdst_table[2] = {
 		.dump_type = DUMP_TYPE_SYSDUMP,
 		.size = CPU_TO_BE32(HBRT_CON_LEN),
 	},
+	{
+		.addr = CPU_TO_BE64(SKIBOOT_BASE | HRMOR_BIT),
+		.data_region = DUMP_REGION_OPAL_MEMORY,
+		.dump_type = DUMP_TYPE_FADUMP,
+		.size = CPU_TO_BE32(FADUMP_DEST_SKIBOOT_SIZE),
+	},
+};
+
+__section(".mddt.data") struct mddt_table init_mddt_table[3] = {
+	{
+		.addr = CPU_TO_BE64(FADUMP_DEST_CON_LOG | HRMOR_BIT),
+		.data_region = DUMP_REGION_CONSOLE,
+		.size = CPU_TO_BE32(FADUMP_DEST_CON_SIZE),
+	},
+	{
+		.addr = CPU_TO_BE64(FADUMP_DEST_HBRT_LOG | HRMOR_BIT),
+		.data_region = DUMP_REGION_HBRT_LOG,
+		.size = CPU_TO_BE32(FADUMP_DEST_HBRT_SIZE),
+	},
+	{
+		.addr = CPU_TO_BE64(FADUMP_DEST_SKIBOOT_BASE | HRMOR_BIT),
+		.data_region = DUMP_REGION_OPAL_MEMORY,
+		.size = CPU_TO_BE32(FADUMP_DEST_SKIBOOT_SIZE),
+	},
 };
 
 /* SP Interface Root Array, aka SPIRA */
@@ -187,10 +211,32 @@ __section(".spirah.data") struct spirah spirah = {
 #endif
 		.mdump_src = {
 			.addr		= CPU_TO_BE64(MDST_TABLE_OFF),
-			.alloc_cnt	= CPU_TO_BE16(ARRAY_SIZE(init_mdst_table)),
+			.alloc_cnt	= CPU_TO_BE16(MDST_TABLE_SIZE / sizeof(struct mdst_table)),
 			.act_cnt	= CPU_TO_BE16(ARRAY_SIZE(init_mdst_table)),
-			.alloc_len	=
-				CPU_TO_BE32(sizeof(init_mdst_table)),
+			.alloc_len	= CPU_TO_BE32(sizeof(struct mdst_table)),
+			.act_len	= CPU_TO_BE32(sizeof(struct mdst_table)),
+		},
+		.mdump_dst = {
+			.addr		= CPU_TO_BE64(MDDT_TABLE_OFF),
+			.alloc_cnt	= CPU_TO_BE16(MDDT_TABLE_SIZE / sizeof(struct mddt_table)),
+			.act_cnt	= CPU_TO_BE16(ARRAY_SIZE(init_mddt_table)),
+			.alloc_len	= CPU_TO_BE32(sizeof(struct mddt_table)),
+			.act_len	= CPU_TO_BE32(sizeof(struct mddt_table)),
+		},
+		.mdump_res = {
+			.addr		= CPU_TO_BE64(MDRT_TABLE_BASE),
+			.alloc_cnt	=
+				CPU_TO_BE16(MDRT_TABLE_SIZE / sizeof(struct mdrt_table)),
+			/*
+			 * XXX: Ideally hostboot should use allocated count and len.
+			 *      But looks like hostboot uses actual count and len to
+			 *      get MDRT table size. And updates act_cnt after
+			 *      collecting dump.
+			 */
+			.act_cnt	=
+				CPU_TO_BE16(MDRT_TABLE_SIZE / sizeof(struct mdrt_table)),
+			.alloc_len	= CPU_TO_BE32(sizeof(struct mdrt_table)),
+			.act_len	= CPU_TO_BE32(sizeof(struct mdrt_table)),
 		},
 	},
 };
diff --git a/hdata/test/hdata_to_dt.c b/hdata/test/hdata_to_dt.c
index f7ed65e66..0f4ec4a73 100644
--- a/hdata/test/hdata_to_dt.c
+++ b/hdata/test/hdata_to_dt.c
@@ -77,6 +77,7 @@ unsigned long tb_hz = 512000000;
 #define PVR_P9		0x004e0200
 
 #define SPR_PVR		0x11f	/* RO: Processor version register */
+#define SPR_PIR_P9_MASK	0x7fff	/* Mask of implemented bits */
 
 #define __CPU_H
 struct cpu_thread {
diff --git a/include/opal-dump.h b/include/opal-dump.h
index faa4a1639..a4b052e95 100644
--- a/include/opal-dump.h
+++ b/include/opal-dump.h
@@ -35,6 +35,7 @@
 
 #define DUMP_REGION_CONSOLE	0x01
 #define DUMP_REGION_HBRT_LOG	0x02
+#define DUMP_REGION_OPAL_MEMORY	0x03
 
 /* Mainstore memory to be captured by FSP SYSDUMP */
 #define DUMP_TYPE_SYSDUMP		0xF5
-- 
2.14.3