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-rw-r--r--src/ec/google/chromeec/ec.c25
-rw-r--r--src/ec/google/chromeec/ec.h1
-rw-r--r--src/ec/google/chromeec/ec_commands.h1
3 files changed, 27 insertions, 0 deletions
diff --git a/src/ec/google/chromeec/ec.c b/src/ec/google/chromeec/ec.c
index 21949d10df..449eaf307c 100644
--- a/src/ec/google/chromeec/ec.c
+++ b/src/ec/google/chromeec/ec.c
@@ -607,6 +607,31 @@ int google_chromeec_cbi_get_oem_id(uint32_t *id)
return cbi_get_uint32(id, CBI_TAG_OEM_ID);
}
+int google_chromeec_cbi_get_dram_part_num(char *buf, size_t bufsize)
+{
+ struct ec_params_get_cbi p = {
+ .tag = CBI_TAG_DRAM_PART_NUM,
+ };
+ struct chromeec_command cmd = {
+ .cmd_code = EC_CMD_GET_CROS_BOARD_INFO,
+ .cmd_version = 0,
+ .cmd_data_in = &p,
+ .cmd_data_out = buf,
+ .cmd_size_in = sizeof(p),
+ .cmd_size_out = bufsize,
+ };
+ int rv;
+
+ rv = google_chromeec_command(&cmd);
+ if (rv < 0)
+ return rv;
+
+ /* Ensure NUL termination. */
+ buf[bufsize - 1] = '\0';
+
+ return 0;
+}
+
#ifndef __SMM__
u16 google_chromeec_get_board_version(void)
{
diff --git a/src/ec/google/chromeec/ec.h b/src/ec/google/chromeec/ec.h
index 7310ade09d..2c6f1d6b8c 100644
--- a/src/ec/google/chromeec/ec.h
+++ b/src/ec/google/chromeec/ec.h
@@ -74,6 +74,7 @@ int google_chromeec_reboot(int dev_idx, enum ec_reboot_cmd type, uint8_t flags);
*/
int google_chromeec_cbi_get_oem_id(uint32_t *id);
int google_chromeec_cbi_get_sku_id(uint32_t *id);
+int google_chromeec_cbi_get_dram_part_num(char *buf, size_t bufsize);
/* MEC uses 0x800/0x804 as register/index pair, thus an 8-byte resource. */
#define MEC_EMI_BASE 0x800
diff --git a/src/ec/google/chromeec/ec_commands.h b/src/ec/google/chromeec/ec_commands.h
index 730be09abc..2962354f9c 100644
--- a/src/ec/google/chromeec/ec_commands.h
+++ b/src/ec/google/chromeec/ec_commands.h
@@ -4780,6 +4780,7 @@ enum cbi_data_tag {
CBI_TAG_BOARD_VERSION = 0, /* uint16_t or uint8_t[] = {minor,major} */
CBI_TAG_OEM_ID = 1, /* uint8_t */
CBI_TAG_SKU_ID = 2, /* uint8_t */
+ CBI_TAG_DRAM_PART_NUM = 3, /* variable length ascii, nul terminated. */
CBI_TAG_COUNT,
};