diff options
Diffstat (limited to 'src/include/spd_bin.h')
| -rw-r--r-- | src/include/spd_bin.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/include/spd_bin.h b/src/include/spd_bin.h index d1ee6f775c..11a0084c70 100644 --- a/src/include/spd_bin.h +++ b/src/include/spd_bin.h @@ -21,16 +21,19 @@ #define SPD_DRAM_LPDDR5 0x13 #define SPD_DENSITY_BANKS 4 #define SPD_ADDRESSING 5 +#define SPD_SN_LEN 4 #define DDR3_ORGANIZATION 7 #define DDR3_BUS_DEV_WIDTH 8 #define DDR4_ORGANIZATION 12 #define DDR4_BUS_DEV_WIDTH 13 #define DDR3_SPD_PART_OFF 128 #define DDR3_SPD_PART_LEN 18 +#define DDR3_SPD_SN_OFF 122 #define LPDDR3_SPD_PART_OFF 128 #define LPDDR3_SPD_PART_LEN 18 #define DDR4_SPD_PART_OFF 329 #define DDR4_SPD_PART_LEN 20 +#define DDR4_SPD_SN_OFF 325 struct spd_block { u8 addr_map[CONFIG_DIMM_MAX]; /* 7 bit I2C addresses */ @@ -45,6 +48,13 @@ int get_spd_cbfs_rdev(struct region_device *spd_rdev, u8 spd_index); void dump_spd_info(struct spd_block *blk); void get_spd_smbus(struct spd_block *blk); +/* + * get_spd_sn returns the SODIMM serial number. It only supports DDR3 and DDR4. + * return CB_SUCCESS, sn is the serial number and sn=0xffffffff if the dimm is not present. + * return CB_ERR, if dram_type is not supported or addr is a zero. + */ +enum cb_err get_spd_sn(u8 addr, u32 *sn); + /* expects SPD size to be 128 bytes, reads from "spd.bin" in CBFS and verifies the checksum. Only available if CONFIG_DIMM_SPD_SIZE == 128. */ int read_ddr3_spd_from_cbfs(u8 *buf, int idx); |