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

lib/spd_bin: Correct LPDDR3 SPD information 

Follow JEDEC 21-C to correct JEDEC LPDDR3 SPD information. Based on
JEDEC 21-C, LPDDR3 has the same definition with LPDDR4.

Signed-off-by: Eric Lai <ericr_lai@compal.corp-partner.google.com>
Change-Id: I7c9361caf272ea916a3a618ee2b72a6142ffc80c
Reviewed-on: https://review.coreboot.org/c/coreboot/+/39366
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Eric Lai 2020-03-07 13:55:33 +08:00 committed by Patrick Georgi
parent b9f9f6c12b
commit 8fb7cd4123
1 changed files with 26 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

38
src/lib/spd_bin.c
View File

@ -30,9 +30,22 @@ void dump_spd_info(struct spd_block *blk)
}
}
static bool is_memory_type_ddr4(int dram_type)
static bool use_ddr4_params(int dram_type)
{
return (dram_type == SPD_DRAM_DDR4);
switch (dram_type) {
case SPD_DRAM_DDR3:
case SPD_DRAM_LPDDR3_INTEL:
return false;
/* LPDDR3, LPDDR4 and DDR4 share the same attributes */
case SPD_DRAM_LPDDR3_JEDEC:
case SPD_DRAM_DDR4:
case SPD_DRAM_LPDDR4:
return true;
default:
printk(BIOS_ERR, "Defaulting to using DDR4 params. Please add dram_type check for %d to %s\n",
dram_type, __func__);
return true;
}
}
static const char *spd_get_module_type_string(int dram_type)
@ -57,14 +70,14 @@ static int spd_get_banks(const uint8_t spd[], int dram_type)
static const int ddr4_banks[10] = { 4, 8, -1, -1, 8, 16, -1, -1, 16, 32 };
int index = (spd[SPD_DENSITY_BANKS] >> 4) & 0xf;
switch (dram_type) {
/* DDR3 and LPDDR3 have the same bank definition */
/* DDR3 and LPDDR3_Intel have the same bank definition */
case SPD_DRAM_DDR3:
case SPD_DRAM_LPDDR3_INTEL:
case SPD_DRAM_LPDDR3_JEDEC:
if (index >= ARRAY_SIZE(ddr3_banks))
return -1;
return ddr3_banks[index];
/* DDR4 and LPDDR4 has the same bank definition */
/* LPDDR3, LPDDR4 and DDR4 have the same bank definition */
case SPD_DRAM_LPDDR3_JEDEC:
case SPD_DRAM_DDR4:
case SPD_DRAM_LPDDR4:
if (index >= ARRAY_SIZE(ddr4_banks))
@ -106,8 +119,8 @@ static int spd_get_cols(const uint8_t spd[])
static int spd_get_ranks(const uint8_t spd[], int dram_type)
{
static const int spd_ranks[8] = { 1, 2, 3, 4, 5, 6, 7, 8 };
int organ_offset = is_memory_type_ddr4(dram_type) ? DDR4_ORGANIZATION
: DDR3_ORGANIZATION;
int organ_offset = use_ddr4_params(dram_type) ? DDR4_ORGANIZATION
: DDR3_ORGANIZATION;
int index = (spd[organ_offset] >> 3) & 7;
if (index >= ARRAY_SIZE(spd_ranks))
return -1;
@ -117,8 +130,8 @@ static int spd_get_ranks(const uint8_t spd[], int dram_type)
static int spd_get_devw(const uint8_t spd[], int dram_type)
{
static const int spd_devw[4] = { 4, 8, 16, 32 };
int organ_offset = is_memory_type_ddr4(dram_type) ? DDR4_ORGANIZATION
: DDR3_ORGANIZATION;
int organ_offset = use_ddr4_params(dram_type) ? DDR4_ORGANIZATION
: DDR3_ORGANIZATION;
int index = spd[organ_offset] & 7;
if (index >= ARRAY_SIZE(spd_devw))
return -1;
@ -128,8 +141,8 @@ static int spd_get_devw(const uint8_t spd[], int dram_type)
static int spd_get_busw(const uint8_t spd[], int dram_type)
{
static const int spd_busw[4] = { 8, 16, 32, 64 };
int busw_offset = is_memory_type_ddr4(dram_type) ? DDR4_BUS_DEV_WIDTH
: DDR3_BUS_DEV_WIDTH;
int busw_offset = use_ddr4_params(dram_type) ? DDR4_BUS_DEV_WIDTH
: DDR3_BUS_DEV_WIDTH;
int index = spd[busw_offset] & 7;
if (index >= ARRAY_SIZE(spd_busw))
return -1;
@ -144,11 +157,12 @@ static void spd_get_name(const uint8_t spd[], char spd_name[], int dram_type)
spd_name[DDR3_SPD_PART_LEN] = 0;
break;
case SPD_DRAM_LPDDR3_INTEL:
case SPD_DRAM_LPDDR3_JEDEC:
memcpy(spd_name, &spd[LPDDR3_SPD_PART_OFF],
LPDDR3_SPD_PART_LEN);
spd_name[LPDDR3_SPD_PART_LEN] = 0;
break;
/* LPDDR3, LPDDR4 and DDR4 have the same part number offset */
case SPD_DRAM_LPDDR3_JEDEC:
case SPD_DRAM_DDR4:
case SPD_DRAM_LPDDR4:
memcpy(spd_name, &spd[DDR4_SPD_PART_OFF], DDR4_SPD_PART_LEN);