Change in coreboot[master]: drivers/elog/elog: Add timestamps to elog_init

[Raul Rangel (Code Review)]

Raul Rangel has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/58957 )

Change subject: drivers/elog/elog: Add timestamps to elog_init
......................................................................

drivers/elog/elog: Add timestamps to elog_init

elog init requires doing a lot of SPI transactions. This change makes it
clear how long we spend initializing elog.

BUG=b:179699789
TEST=Boot guybrush and see elog init timestamps
 114:<unknown>                                         3,029,116 (88)
 115:<unknown>                                         3,071,281 (42,165)

Signed-off-by: Raul E Rangel 
Change-Id: Ia92372dd76535e06eb3b8a08b53e80ddb38b7a8f
---
M src/commonlib/include/commonlib/timestamp_serialized.h
M src/drivers/elog/elog.c
2 files changed, 12 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/57/58957/1

diff --git a/src/commonlib/include/commonlib/timestamp_serialized.h b/src/commonlib/include/commonlib/timestamp_serialized.h
index 98fe552..de3e1bb 100644
--- a/src/commonlib/include/commonlib/timestamp_serialized.h
+++ b/src/commonlib/include/commonlib/timestamp_serialized.h
@@ -56,6 +56,8 @@
    TS_DELAY_END = 111,
    TS_READ_UCODE_START = 112,
    TS_READ_UCODE_END = 113,
+	TS_ELOG_INIT_START = 114,
+	TS_ELOG_INIT_END = 115,

/* 500+ reserved for vendorcode extensions (500-600: google/chromeos) */
    TS_START_COPYVER = 501,
@@ -200,6 +202,8 @@
    { TS_DELAY_END,		"Forced delay end" },
    { TS_READ_UCODE_START,	"started reading uCode" },
    { TS_READ_UCODE_END,	"finished reading uCode" },
+	{ TS_ELOG_INIT_START,	"started elog init" },
+	{ TS_ELOG_INIT_END,	"finished elog init" },

{ TS_START_COPYVER,	"starting to load verstage" },
    { TS_END_COPYVER,	"finished loading verstage" },
diff --git a/src/drivers/elog/elog.c b/src/drivers/elog/elog.c
index ca2ec6e..37df182 100644
--- a/src/drivers/elog/elog.c
+++ b/src/drivers/elog/elog.c
@@ -16,6 +16,7 @@
 #include <smbios.h>
 #include <stdint.h>
 #include <string.h>
+#include <timestamp.h>

#define ELOG_MIN_AVAILABLE_ENTRIES	2  /* Shrink when this many can't fit */
 #define ELOG_SHRINK_PERCENTAGE		25 /* Percent of total area to remove */
@@ -749,6 +750,9 @@
    }
    elog_state.elog_initialized = ELOG_BROKEN;

+	if (!ENV_SMM)
+		timestamp_add_now(TS_ELOG_INIT_START);
+
    elog_debug("%s()\n", __func__);

/* Set up the backing store */
@@ -781,6 +785,10 @@

if (ENV_PAYLOAD_LOADER)
    	elog_add_boot_count();
+
+	if (!ENV_SMM)
+		timestamp_add_now(TS_ELOG_INIT_END);
+
    return 0;
 }