soc/intel/common: Do not trigger crashlog on all resets by default

Crashlog has error records and PMC reset records two parts. When we
send ipc cmd "PMC_IPC_CMD_ID_CRASHLOG_ON_RESET", PMC reset record is
enabled. At each warm/cold/global reset, crashlog would be triggered.
The cause of this crash would be "TRIGGER_ON_ALL_RESETS", it is used to
catch unknown reset reason. At the same time, we would see [Hardware
Error] in the kernel log.

If we default enable TRIGGER_ON_ALL_RESETS, we would have too many false
alarm. Now we disable PMC reset records part by default. And we could
enable it when we need it for the debug purpose.

The generated bert dump is under /var/spool/crash/, we could check this
path to verify this CONFIG disable/enable status.

BUG=b:202737385
TEST=No new bert dump after a warm reset.

Signed-off-by: Curtis Chen <curtis.chen@intel.com>
Change-Id: I3ec4ff3c8a3799156de030f4556fe6ce61305139
Reviewed-on: https://review.coreboot.org/c/coreboot/+/59951
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>

4 files changed, 18 insertions, 16 deletions

diff --git a/src/soc/intel/alderlake/Kconfig b/src/soc/intel/alderlake/Kconfig
index 9e69663acd..46fd742048 100644
--- a/src/soc/intel/alderlake/Kconfig
+++ b/src/soc/intel/alderlake/Kconfig
@@ -333,13 +333,6 @@ config MRC_CHANNEL_WIDTH
 	int
 	default 16
 
-config SOC_INTEL_CRASHLOG
-	def_bool n
-	select SOC_INTEL_COMMON_BLOCK_CRASHLOG
-	select ACPI_BERT
-	help
-	  Enables CrashLog.
-
 config ACPI_ADL_IPU_ES_SUPPORT
 	def_bool n
 	help
diff --git a/src/soc/intel/common/Kconfig.common b/src/soc/intel/common/Kconfig.common
index 5f1f608c4e..c7e1aec4de 100644
--- a/src/soc/intel/common/Kconfig.common
+++ b/src/soc/intel/common/Kconfig.common
@@ -79,4 +79,18 @@ config SMM_MODULE_STACK_SIZE
 	hex
 	default 0x800
 
+config SOC_INTEL_CRASHLOG
+	def_bool n
+	select SOC_INTEL_COMMON_BLOCK_CRASHLOG
+	select ACPI_BERT
+	help
+	  Enables Crashlog.
+
+config SOC_INTEL_CRASHLOG_ON_RESET
+	def_bool n
+	help
+	  Enables the PMC to collect crashlog records on every reset event. NOTE:
+	  This will result in a BERT table being populated containing a PMC
+	  crashlog record on every boot.
+
 endif # SOC_INTEL_COMMON
diff --git a/src/soc/intel/common/block/crashlog/crashlog.c b/src/soc/intel/common/block/crashlog/crashlog.c
index c3d0cfd469..8c31d03fb8 100644
--- a/src/soc/intel/common/block/crashlog/crashlog.c
+++ b/src/soc/intel/common/block/crashlog/crashlog.c
@@ -479,8 +479,10 @@ void collect_pmc_and_cpu_crashlog_from_srams(void)
 {
 	if (pmc_crashlog_support() && cl_pmc_data_present()
 		&& (cl_get_pmc_record_size() > 0)) {
-		cl_pmc_en_gen_on_all_reboot();
-		printk(BIOS_DEBUG, "Crashlog collection enabled on every reboot.\n");
+		if (CONFIG(SOC_INTEL_CRASHLOG_ON_RESET)) {
+			cl_pmc_en_gen_on_all_reboot();
+			printk(BIOS_DEBUG, "Crashlog collection enabled on every reboot.\n");
+		}
 		cl_get_pmc_sram_data();
 	} else {
 		printk(BIOS_DEBUG, "Skipping PMC crashLog collection. Data not present.\n");
diff --git a/src/soc/intel/tigerlake/Kconfig b/src/soc/intel/tigerlake/Kconfig
index a7b3ae447d..cf59b60378 100644
--- a/src/soc/intel/tigerlake/Kconfig
+++ b/src/soc/intel/tigerlake/Kconfig
@@ -284,13 +284,6 @@ config MRC_CHANNEL_WIDTH
 	int
 	default 16
 
-config SOC_INTEL_CRASHLOG
-	def_bool n
-	select SOC_INTEL_COMMON_BLOCK_CRASHLOG
-	select ACPI_BERT
-	help
-	  Enables CrashLog.
-
 # Intel recommends reserving the following resources per USB4 root port,
 # from TGL BIOS Spec (doc #611569) Revision 0.7.6 Section 7.2.5.1.5
 # - 42 buses