soc/intel/tigerlake: Add CrashLog implementation for intel TGL

CrashLog is a diagnostic feature for Intel TGL based platforms.
It is meant to capture the state of the platform before a crash.
The state of relevant registers is preserved across a warm reset.

BUG=None
TEST=CrashLog data generated, extracted, processed, decoded sucessfully on delbin.

Signed-off-by: Francois Toguo <francois.toguo.fotso@intel.com>
Change-Id: Ie3763cebcd1178709cc8597710bf062a30901809
Reviewed-on: https://review.coreboot.org/c/coreboot/+/49943
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>

1 files changed, 95 insertions, 0 deletions

diff --git a/src/soc/intel/common/block/acpi/acpi_bert.c b/src/soc/intel/common/block/acpi/acpi_bert.c
new file mode 100644
index 0000000000..d090dfd2cf
--- /dev/null
+++ b/src/soc/intel/common/block/acpi/acpi_bert.c
@@ -0,0 +1,95 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include <acpi/acpi.h>
+#include <acpi/acpigen.h>
+#include <arch/bert_storage.h>
+#include <console/console.h>
+#include <intelblocks/acpi.h>
+#include <intelblocks/crashlog.h>
+
+
+void acpi_soc_fill_bert(acpi_bert_t *bert,
+			void **region,
+			size_t *length)
+{
+	acpi_generic_error_status_t *status = NULL;
+	size_t cpu_record_size, pmc_record_size;
+	void *cl_data = NULL;
+
+	if (!cl_get_total_data_size()) {
+		printk(BIOS_ERR, "Error: No crashlog record present\n");
+		return;
+	}
+
+	status = bert_new_event(&CPER_SEC_FW_ERR_REC_REF_GUID);
+	if (!status) {
+		printk(BIOS_ERR, "Error: unable to allocate GSB\n");
+		return;
+	}
+
+	if (cl_get_total_data_size() > bert_storage_remaining()) {
+		printk(BIOS_ERR, "Error: Crashlog entry would exceed "
+				"available region\n");
+		return;
+	}
+
+	cpu_record_size = cl_get_cpu_record_size();
+	if (cpu_record_size) {
+		cl_data = new_cper_fw_error_crashlog(status, cpu_record_size);
+		if (!cl_data) {
+			printk(BIOS_ERR, "Error: Crashlog CPU entry(size %lu) "
+				"would exceed available region\n",
+				cpu_record_size);
+			return;
+		}
+		printk(BIOS_DEBUG, "cl_data %p, cpu_record_size %lu\n",
+			cl_data, cpu_record_size);
+		cl_fill_cpu_records(cl_data);
+	}
+
+	pmc_record_size = cl_get_pmc_record_size();
+	if (pmc_record_size) {
+		/*  Allocate new FW ERR structure in case CPU crashlog is present */
+		if (cpu_record_size && !bert_append_fw_err(status)) {
+			printk(BIOS_ERR, "Error: Crashlog PMC entry would "
+				"exceed available region\n");
+			return;
+		}
+
+		cl_data = new_cper_fw_error_crashlog(status, pmc_record_size);
+		if (!cl_data) {
+			printk(BIOS_ERR, "Error: Crashlog PMC entry(size %lu) "
+				"would exceed available region\n",
+				pmc_record_size);
+			return;
+		}
+		printk(BIOS_DEBUG, "cl_data %p, pmc_record_size %lu\n",
+			cl_data, pmc_record_size);
+		cl_fill_pmc_records(cl_data);
+	}
+
+	*length = status->raw_data_length;
+	*region = (void *)status;
+
+}
+
+bool acpi_is_boot_error_src_present(void)
+{
+
+	if (!CONFIG(SOC_INTEL_CRASHLOG)) {
+		printk(BIOS_DEBUG, "Crashlog disabled.\n");
+		return false;
+	}
+
+	if (!discover_crashlog()) {
+		printk(BIOS_SPEW, "Crashlog discovery result: crashlog not found\n");
+		return false;
+	}
+
+	collect_pmc_and_cpu_crashlog_from_srams();
+
+	/* Discovery tables sizes can be larger than the actual valid collected data */
+	u32 crashlog_size = cl_get_total_data_size();
+
+	return (crashlog_size > 0);
+}