diff options
Diffstat (limited to 'src/mainboard/google/cyan/variants/setzer/spd_util.c')
| -rw-r--r-- | src/mainboard/google/cyan/variants/setzer/spd_util.c | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/src/mainboard/google/cyan/variants/setzer/spd_util.c b/src/mainboard/google/cyan/variants/setzer/spd_util.c new file mode 100644 index 0000000000..cd1a2e35d0 --- /dev/null +++ b/src/mainboard/google/cyan/variants/setzer/spd_util.c @@ -0,0 +1,92 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2013 Google Inc. + * Copyright (C) 2015 Intel Corp. + * Copyright (C) 2017 Matt DeVillier + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <console/console.h> +#include <gpio.h> +#include <soc/gpio.h> +#include <mainboard/google/cyan/spd/spd_util.h> + +/* + * 0b0000 - 4GiB total - 2 x 2GiB Samsung K4E8E304EE-EGCF + * 0b0001 - 2GiB total - 1 x 2GiB Samsung K4E8E304EE-EGCF + * 0b0010 - 4GiB total - 2 x 2GiB Hynix H9CCNNN8GTMLAR-NUD + * 0b0011 - 2GiB total - 1 x 2GiB Hynix H9CCNNN8GTMLAR-NUD + * 0b0100 - 4GiB total - 2 x 2GiB Micron MT52L256M32D1PF-107 + * 0b0101 - 2GiB total - 1 x 2GiB Micron MT52L256M32D1PF-107 + * 0b0110 - 2GiB total - 1 x 2GiB Samsung K4E8E324EB-EGCF + * 0b0111 - 4GiB total - 2 x 2GiB Samsung K4E8E324EB-EGCF + * 0b1000 - 2GiB total - 1 x 2GiB Hynix H9CCNNN8GTALAR-NUD + * 0b1001 - 4GiB total - 2 x 4GiB Hynix H9CCNNN8GTALAR-NUD + */ + +static const uint32_t dual_channel_config = + (1 << 0) | (1 << 2) | (1 << 4) | (1 << 7) | (1 << 9); + +uint8_t get_ramid(void) +{ + gpio_t spd_gpios[] = { + GP_SW_64, /* I2C3_SDA, RAMID0 */ + GP_SE_02, /* MF_PLT_CLK1, RAMID1 */ + GP_SW_67, /* I2C3_SCL, RAMID2 */ + GP_SW_80, /* SATA_GP3, RAMID3 */ + }; + + return gpio_base2_value(spd_gpios, ARRAY_SIZE(spd_gpios)); +} + +int get_variant_spd_index(int ram_id, int *dual) +{ + /* Determine if single or dual channel memory system */ + *dual = (dual_channel_config & (1 << ram_id)) ? 1 : 0; + + /* Display the RAM type */ + switch (ram_id) { + case 0: + printk(BIOS_DEBUG, "4GiB Samsung K4E8E304EE-EGCF\n"); + break; + case 1: + printk(BIOS_DEBUG, "2GiB Samsung K4E8E304EE-EGCF\n"); + break; + case 2: + printk(BIOS_DEBUG, "4GiB Hynix H9CCNNN8GTMLAR-NUD\n"); + break; + case 3: + printk(BIOS_DEBUG, "2GiB Hynix H9CCNNN8GTMLAR-NUD\n"); + break; + case 4: + printk(BIOS_DEBUG, "4GiB Micron MT52L256M32D1PF-107\n"); + break; + case 5: + printk(BIOS_DEBUG, "2GiB Micron MT52L256M32D1PF-107\n"); + break; + case 6: + printk(BIOS_DEBUG, "2GiB Samsung K4E8E324EB-EGCF\n"); + break; + case 7: + printk(BIOS_DEBUG, "4GiB Samsung K4E8E324EB-EGCF\n"); + break; + case 8: + printk(BIOS_DEBUG, "2GiB Hynix H9CCNNN8GTALAR-NUD\n"); + break; + case 9: + printk(BIOS_DEBUG, "4GiB Hynix H9CCNNN8GTALAR-NUD\n"); + break; + } + + /* 1:1 mapping between ram_id and spd_index for setzer */ + return ram_id; +} |