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-rw-r--r--src/drivers/elog/elog.c29
-rw-r--r--src/drivers/elog/elog_internal.h15
2 files changed, 44 insertions, 0 deletions
diff --git a/src/drivers/elog/elog.c b/src/drivers/elog/elog.c
index 8e56b85242..9c0fa930ad 100644
--- a/src/drivers/elog/elog.c
+++ b/src/drivers/elog/elog.c
@@ -20,6 +20,7 @@
#include <arch/acpi.h>
#include <console/console.h>
#include <pc80/mc146818rtc.h>
+#include <smbios.h>
#include <spi.h>
#include <spi_flash.h>
#include <stdint.h>
@@ -677,6 +678,34 @@ static int elog_spi_init(void)
}
/*
+ * Fill out SMBIOS Type 15 table entry so the
+ * event log can be discovered at runtime.
+ */
+int elog_smbios_write_type15(unsigned long *current, int handle)
+{
+ struct smbios_type15 *t = (struct smbios_type15 *)*current;
+ int len = sizeof(struct smbios_type15);
+
+ memset(t, 0, len);
+ t->type = SMBIOS_EVENT_LOG;
+ t->length = len - 2;
+ t->handle = handle;
+ t->area_length = elog_get_flash()->total_size - 1;
+ t->header_offset = 0;
+ t->data_offset = sizeof(struct elog_header);
+ t->access_method = SMBIOS_EVENTLOG_ACCESS_METHOD_MMIO32;
+ t->log_status = SMBIOS_EVENTLOG_STATUS_VALID;
+ t->change_token = 0;
+ t->address = (u32)elog_get_flash()->backing_store;
+ t->header_format = ELOG_HEADER_TYPE_OEM;
+ t->log_type_descriptors = 0;
+ t->log_type_descriptor_length = 2;
+
+ *current += len;
+ return len;
+}
+
+/*
* Clear the entire event log
*/
int elog_clear(void)
diff --git a/src/drivers/elog/elog_internal.h b/src/drivers/elog/elog_internal.h
index 2a6a0b7fc4..6d9a0d4bb5 100644
--- a/src/drivers/elog/elog_internal.h
+++ b/src/drivers/elog/elog_internal.h
@@ -32,6 +32,21 @@ struct elog_header {
#define ELOG_SIGNATURE 0x474f4c45 /* 'ELOG' */
#define ELOG_VERSION 1
+/* SMBIOS event log header */
+struct event_header {
+ u8 type;
+ u8 length;
+ u8 year;
+ u8 month;
+ u8 day;
+ u8 hour;
+ u8 minute;
+ u8 second;
+} __attribute__ ((packed));
+
+/* SMBIOS Type 15 related constants */
+#define ELOG_HEADER_TYPE_OEM 0x88
+
typedef enum elog_descriptor_type {
ELOG_DESCRIPTOR_UNKNOWN,
ELOG_DESCRIPTOR_MEMORY,