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 - 4GiB total - 2 x 2GiB Micron MT41K256M16HA-125:E 1600MHz
11  * 0b001 - 4GiB total - 2 x 2GiB Hynix H5TC4G63AFR-PBA 1600MHz
12  * 0b010 - 2GiB total - 2 x 1GiB Micron MT41K128M16JT-125:K 1600MHz
13  * 0b011 - 2GiB total - 2 x 1GiB Hynix H5TC2G63FFR-PBA 1600MHz
14  * 0b100 - 2GiB total - 1 x 2GiB Micron MT41K256M16HA-125:E 1600MHz
15  * 0b101 - 2GiB total - 2 x 1GiB Samsung K4B2G1646Q-BYK0 1600MHz
16  * 0b110 - 4GiB total - 2 x 2GiB Samsung K4B4G1646Q-HYK0 1600MHz
17  * 0b111 - 2GiB total - 1 x 2GiB Samsung K4B4G1646Q-HYK0 1600MHz
18  */
19 
21  (1 << 0) | (1 << 1) | (1 << 2) | (1 << 3) | (1 << 5) | (1 << 6);
22 
23 #define SPD_SIZE 256
24 #define GPIO_SSUS_37_PAD 57
25 #define GPIO_SSUS_38_PAD 50
26 #define GPIO_SSUS_39_PAD 58
27 
28 #endif
static const uint32_t dual_channel_config
Definition: variant.h:20
unsigned int uint32_t
Definition: stdint.h:14