GNUBoot
/
coreboot-kgpe-d16
2
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

lib/spd_bin: Extend LPDDR4 SPD information 

Follow JEDEC 21-C to extend LPDDR4 SPD information.

Signed-off-by: Eric Lai <ericr_lai@compal.corp-partner.google.com>
Change-Id: I68c9782c543afab4423296fa7ac1c078db5649c3
Reviewed-on: https://review.coreboot.org/c/coreboot/+/39352
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
This commit is contained in:
Eric Lai 2020-03-06 21:18:30 +08:00 committed by Patrick Georgi
parent a317353f42
commit d0ee87032a
2 changed files with 8 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
src/include/spd_bin.h
View File

@ -28,6 +28,7 @@
#define SPD_DRAM_LPDDR3_INTEL 0xF1
#define SPD_DRAM_LPDDR3_JEDEC 0x0F
#define SPD_DRAM_DDR4 0x0C
#define SPD_DRAM_LPDDR4 0x10
#define SPD_DENSITY_BANKS 4
#define SPD_ADDRESSING 5
#define DDR3_ORGANIZATION 7
@ -40,8 +41,6 @@
#define LPDDR3_SPD_PART_LEN 18
#define DDR4_SPD_PART_OFF 329
#define DDR4_SPD_PART_LEN 20
#define LPDDR4_SPD_PART_OFF 329
#define LPDDR4_SPD_PART_LEN 20
struct spd_block {
u8 addr_map[CONFIG_DIMM_MAX]; /* 7 bit I2C addresses */

8
src/lib/spd_bin.c
View File

@ -45,6 +45,8 @@ static const char *spd_get_module_type_string(int dram_type)
return "LPDDR3";
case SPD_DRAM_DDR4:
return "DDR4";
case SPD_DRAM_LPDDR4:
return "LPDDR4";
}
return "UNKNOWN";
}
@ -62,7 +64,9 @@ static int spd_get_banks(const uint8_t spd[], int dram_type)
if (index >= ARRAY_SIZE(ddr3_banks))
return -1;
return ddr3_banks[index];
/* DDR4 and LPDDR4 has the same bank definition */
case SPD_DRAM_DDR4:
case SPD_DRAM_LPDDR4:
if (index >= ARRAY_SIZE(ddr4_banks))
return -1;
return ddr4_banks[index];
@ -73,7 +77,8 @@ static int spd_get_banks(const uint8_t spd[], int dram_type)
static int spd_get_capmb(const uint8_t spd[])
{
static const int spd_capmb[10] = { 1, 2, 4, 8, 16, 32, 64, 128, 48, 96 };
static const int spd_capmb[13] = { 1, 2, 4, 8, 16, 32, 64,
128, 48, 96, 12, 24, 72 };
int index = spd[SPD_DENSITY_BANKS] & 0xf;
if (index >= ARRAY_SIZE(spd_capmb))
return -1;
@ -145,6 +150,7 @@ static void spd_get_name(const uint8_t spd[], char spd_name[], int dram_type)
spd_name[LPDDR3_SPD_PART_LEN] = 0;
break;
case SPD_DRAM_DDR4:
case SPD_DRAM_LPDDR4:
memcpy(spd_name, &spd[DDR4_SPD_PART_OFF], DDR4_SPD_PART_LEN);
spd_name[DDR4_SPD_PART_LEN] = 0;
break;