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lib/spd_bin: Add LPDDR4X SPD information and DDR5, LPDDR5 IDs

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Follow JESD 21-C: DDR4 SPD Document Release 4 to add new DDR type.

Signed-off-by: Eric Lai <ericr_lai@compal.corp-partner.google.com>
Change-Id: I455c9e4c884ae74c72572be6dc2bd281a660e517
Reviewed-on: https://review.coreboot.org/c/coreboot/+/39495
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
This commit is contained in:
Eric Lai 2020-03-13 17:16:20 +08:00 • committed by Patrick Georgi
commit cb1e386eab
2 changed files with 11 additions and 1 deletions
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3
src/include/spd_bin.h
View file

@ -29,6 +29,9 @@
#define SPD_DRAM_LPDDR3_JEDEC 0x0F
#define SPD_DRAM_DDR4 0x0C
#define SPD_DRAM_LPDDR4 0x10
#define SPD_DRAM_LPDDR4X 0x11
#define SPD_DRAM_DDR5 0x12
#define SPD_DRAM_LPDDR5 0x13
#define SPD_DENSITY_BANKS 4
#define SPD_ADDRESSING 5
#define DDR3_ORGANIZATION 7

9
src/lib/spd_bin.c
View file

@ -36,10 +36,11 @@ static bool use_ddr4_params(int dram_type)
case SPD_DRAM_DDR3:
case SPD_DRAM_LPDDR3_INTEL:
return false;
/* LPDDR3, LPDDR4 and DDR4 share the same attributes */
/* Below DDR type share the same attributes */
case SPD_DRAM_LPDDR3_JEDEC:
case SPD_DRAM_DDR4:
case SPD_DRAM_LPDDR4:
case SPD_DRAM_LPDDR4X:
return true;
default:
printk(BIOS_ERR, "Defaulting to using DDR4 params. Please add dram_type check for %d to %s\n",
@ -60,6 +61,12 @@ static const char *spd_get_module_type_string(int dram_type)
return "DDR4";
case SPD_DRAM_LPDDR4:
return "LPDDR4";
case SPD_DRAM_LPDDR4X:
return "LPDDR4X";
case SPD_DRAM_DDR5:
return "DDR5";
case SPD_DRAM_LPDDR5:
return "LPDDR5";
}
return "UNKNOWN";
}