Change in coreboot[master]: soc/intel/alderlake: Allow retrieving FSP timestamp information

[Subrata Banik (Code Review)]

Attention is currently required from: Tim Wawrzynczak.
Subrata Banik has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/62943 )

Change subject: soc/intel/alderlake: Allow retrieving FSP timestamp information
......................................................................

soc/intel/alderlake: Allow retrieving FSP timestamp information

This patch selects GET_FSP_TIMESTAMP kconfig and attempts to dump the
FSP timestamp information before jumping into payload

BUG=b:216635831
TEST=Able to dump FSP performance data with GET_FSP_TIMESTAMP Kconfig
selected and met the FSP prerequisites.
+--------------------------------------------------+
|------ FSP Performance Timestamp Table Dump ------|
+--------------------------------------------------+
|Perf-ID        Timestamp(ms)          String/GUID |
+--------------------------------------------------+
   0             460253                 SEC
  50             460263                 PEI
  40             460274                 PreMem
   1             495803                9b3ada4f-ae56-4c24-8deaf03b7558ae50
   2             508959                9b3ada4f-ae56-4c24-8deaf03b7558ae50
   1             515253                6141e486-7543-4f1a-a579ff532ed78e75
   2             525453                6141e486-7543-4f1a-a579ff532ed78e75
   1             532059                baeb5bee-5b33-480a-8ab7b29c85e7ceab
   2             546806                baeb5bee-5b33-480a-8ab7b29c85e7ceab
   1             553302                1b04374d-fa9c-420f-ac62fee6d45e8443
   2             563859                1b04374d-fa9c-420f-ac62fee6d45e8443
   1             569955                88c17e54-ebfe-4531-a992581029f58126
   2             575753                88c17e54-ebfe-4531-a992581029f58126
   1             582099                a8499e65-a6f6-48b0-96db45c266030d83
50f0             599599                 unknown name
50f1             716649                 unknown name
   2             728507                a8499e65-a6f6-48b0-96db45c266030d83
   1             734755                9e1cc850-6731-4848-87526673c7005eee
....

Signed-off-by: Subrata Banik 
Change-Id: I568f18c6bc4f54e87f8763a331796f4a72d4c976
---
M src/soc/intel/alderlake/Kconfig
M src/soc/intel/alderlake/finalize.c
2 files changed, 5 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/43/62943/1

diff --git a/src/soc/intel/alderlake/Kconfig b/src/soc/intel/alderlake/Kconfig
index 38415e6..a9c0fcd 100644
--- a/src/soc/intel/alderlake/Kconfig
+++ b/src/soc/intel/alderlake/Kconfig
@@ -44,6 +44,7 @@
    select FSP_STATUS_GLOBAL_RESET_REQUIRED_3
    select FSPS_HAS_ARCH_UPD
    select GENERIC_GPIO_LIB
+	select GET_FSP_TIMESTAMP
    select HAVE_DEBUG_RAM_SETUP
    select HAVE_FSP_GOP
    select INTEL_DESCRIPTOR_MODE_CAPABLE
diff --git a/src/soc/intel/alderlake/finalize.c b/src/soc/intel/alderlake/finalize.c
index 7498f3f..b2e9dbc 100644
--- a/src/soc/intel/alderlake/finalize.c
+++ b/src/soc/intel/alderlake/finalize.c
@@ -13,6 +13,7 @@
 #include <cpu/x86/smm.h>
 #include <device/mmio.h>
 #include <device/pci.h>
+#include <fsp/util.h>
 #include <intelblocks/cse.h>
 #include <intelblocks/lpc_lib.h>
 #include <intelblocks/pcr.h>
@@ -99,6 +100,9 @@
    		 CONFIG(USE_FSP_NOTIFY_PHASE_END_OF_FIRMWARE))
    	heci_finalize();

+	/* Retrieve FSP Performance Timestamp */
+	if (CONFIG(GET_FSP_TIMESTAMP))
+		fsp_get_timestamp();
    /* Indicate finalize step with post code */
    post_code(POST_OS_BOOT);
 }