diff options
Diffstat (limited to 'src/mainboard/google/cyan/variants/edgar/spd_util.c')
| -rw-r--r-- | src/mainboard/google/cyan/variants/edgar/spd_util.c | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/src/mainboard/google/cyan/variants/edgar/spd_util.c b/src/mainboard/google/cyan/variants/edgar/spd_util.c new file mode 100644 index 0000000000..61aa9a7108 --- /dev/null +++ b/src/mainboard/google/cyan/variants/edgar/spd_util.c @@ -0,0 +1,64 @@ +/* + * 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 <mainboard/google/cyan/spd/spd_util.h> + +/* + * 0b0000 - 4GiB total - 2 x 2GiB Samsung K4E8E304EE-EGCE + * 0b0001 - 4GiB total - 2 x 2GiB Hynix H9CCNNN8JTBLAR-NUD + * 0b0010 - 2GiB total - 1 x 2GiB Samsung K4E8E304EE-EGCE + * 0b0011 - 2GiB total - 1 x 2GiB Hynix H9CCNNN8JTBLAR-NUD + * 0b0100 - 4GiB total - 2 x 2GiB Samsung K4E8E324EB-EGCF + * 0b0101 - TBD + * 0b0110 - 2GiB total - 1 x 2GiB Samsung K4E8E324EB-EGCF + */ + +int get_variant_spd_index(int ram_id, int *dual) +{ + /* Determine if single or dual channel memory system */ + /* RAMID1 is deterministic for edgar */ + *dual = ((ram_id > 1) & 0x1) ? 0 : 1; + + /* Display the RAM type */ + switch (ram_id) { + case 0: + printk(BIOS_DEBUG, "4GiB Samsung K4E8E304EE-EGCE\n"); + break; + case 1: + printk(BIOS_DEBUG, "4GiB Hynix H9CCNNN8JTBLAR-NUD\n"); + break; + case 2: + printk(BIOS_DEBUG, "2GiB Samsung K4E8E304EE-EGCE\n"); + break; + case 3: + printk(BIOS_DEBUG, "2GiB Hynix H9CCNNN8JTBLAR-NUD\n"); + break; + case 4: + printk(BIOS_DEBUG, "4GiB Samsung K4E8E324EB-EGCF\n"); + break; + case 5: + printk(BIOS_DEBUG, "empty\n"); + break; + case 6: + printk(BIOS_DEBUG, "2GiB Samsung K4E8E324EB-EGCF\n"); + break; + } + + /* 1:1 mapping between ram_id and spd_index for edgar */ + return ram_id; +} |