coreboot
coreboot is an Open Source project aimed at replacing the proprietary BIOS found in most computers.
memory.c
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/* SPDX-License-Identifier: GPL-2.0-or-later */
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#include <baseboard/variants.h>
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#include <soc/romstage.h>
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static
const
struct
mb_cfg
ddr4_mem_config
= {
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.
type
=
MEM_TYPE_DDR4
,
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.rcomp = {
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/* Baseboard uses only 100ohm Rcomp resistors */
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.resistor = 100,
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/* Baseboard Rcomp target values */
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.targets = {50, 20, 25, 25, 25},
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},
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.ect = 1,
/* Early Command Training */
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.UserBd =
BOARD_TYPE_MOBILE
,
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};
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const
struct
mb_cfg
*
variant_memory_params
(
void
)
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{
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return
&
ddr4_mem_config
;
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}
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bool
variant_is_half_populated
(
void
)
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{
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return
false
;
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}
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void
variant_get_spd_info
(
struct
mem_spd
*
spd_info
)
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{
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spd_info
->topo =
MEM_TOPO_DIMM_MODULE
;
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spd_info
->smbus[0].addr_dimm[0] = 0x50;
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spd_info
->smbus[1].addr_dimm[0] = 0x52;
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}
MEM_TYPE_DDR4
@ MEM_TYPE_DDR4
Definition:
meminit.h:11
MEM_TOPO_DIMM_MODULE
@ MEM_TOPO_DIMM_MODULE
Definition:
meminit.h:26
variant_memory_params
const struct mb_cfg *__weak variant_memory_params(void)
Definition:
memory.c:67
variant_get_spd_info
void variant_get_spd_info(struct mem_spd *spd_info)
Definition:
memory.c:32
variant_is_half_populated
bool variant_is_half_populated(void)
Definition:
memory.c:27
ddr4_mem_config
static const struct mb_cfg ddr4_mem_config
Definition:
memory.c:6
BOARD_TYPE_MOBILE
@ BOARD_TYPE_MOBILE
Definition:
romstage.h:14
mb_cfg
Definition:
meminit.h:71
mb_cfg::type
enum mem_type type
Definition:
meminit.h:72
mem_spd
Definition:
meminit.h:37
spd_info
Definition:
spd.h:11
src
mainboard
google
brya
variants
banshee
memory.c
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