coreboot
coreboot is an Open Source project aimed at replacing the proprietary BIOS found in most computers.
variant.h
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1 /* SPDX-License-Identifier: GPL-2.0-only */
2 
3 #ifndef VARIANT_H
4 #define VARIANT_H
5 
6 #include <stdint.h>
7 
8 /*
9  * RAM_ID[2:0] are on GPIO_SSUS[39:37]
10  * 0b000 - 2GiB total - 1 x 2GiB Samsung K4B4G1646Q-HYK0 1600MHz
11  * 0b001 - 4GiB total - 2 x 2GiB Hynix H5TC4G63AFR-PBA 1600MHz
12  * 0b010 - 2GiB total - 1 x 2GiB Hynix H5TC4G63AFR-PBA 1600MHz
13  * 0b011 - 4GiB total - 2 x 2GiB Samsung K4B4G1646Q-HYK0 1600MHz
14  * 0b100 - 2GiB total - 1 x 2GiB Hynix H5TC4G63CFR-PBA 1600MHz
15  * 0b101 - 4GiB total - 2 x 2GiB Hynix H5TC4G63CFR-PBA 1600MHz
16 */
17 
19  (1 << 1) | (1 << 3) | (1 << 5);
20 
21 #define SPD_SIZE 256
22 #define GPIO_SSUS_37_PAD 57
23 #define GPIO_SSUS_38_PAD 50
24 #define GPIO_SSUS_39_PAD 58
25 
26 #endif
static const uint32_t dual_channel_config
Definition: variant.h:18
unsigned int uint32_t
Definition: stdint.h:14