diff options
author | Matt DeVillier <matt.devillier@gmail.com> | 2017-08-21 00:29:47 -0500 |
---|---|---|
committer | Martin Roth <martinroth@google.com> | 2017-09-16 22:32:33 +0000 |
commit | 602d0a42d4bbc8d862e3722b72e59458e7a97999 (patch) | |
tree | 848f8352a4d26bcdfdf7bd061bc5e2185364373a /src/mainboard/google/cyan/variants/reks/spd_util.c | |
parent | 4f20a4ae47492fc86293f1c6aed063177992fbaf (diff) |
google/reks: add new board as variant of cyan baseboard
Add support for google/reks (Lenovo Chromebook N22/N42) as
a variant of the cyan Braswell basebaseboard.
- Add board-specific code as the new reks variant
- Add new I2C touchscreen device and SPD files to the baseboard
for potential reuse by other variants
Sourced from Chromium branch firmware-reks-7287.133.B,
commit 7d812d4: Revert "Revert "soc/intel/braswell: Populate NVS SCC BAR1""
Change-Id: Iac9e2b5661aa33e12927f4cb84ebaee36522a385
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/21128
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>
Diffstat (limited to 'src/mainboard/google/cyan/variants/reks/spd_util.c')
-rw-r--r-- | src/mainboard/google/cyan/variants/reks/spd_util.c | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/src/mainboard/google/cyan/variants/reks/spd_util.c b/src/mainboard/google/cyan/variants/reks/spd_util.c new file mode 100644 index 0000000000..303857f50d --- /dev/null +++ b/src/mainboard/google/cyan/variants/reks/spd_util.c @@ -0,0 +1,66 @@ +/* + * 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> + +/* We use RAM_ID3 to indicate dual channel config. + * + * 0b0000 - 2GiB total - 1 x 2GiB Samsung K4E8E304EE-EGCF 1600MHz + * 0b0001 - 2GiB total - 1 x 2GiB Hynix H9CCNNN8GTMLAR-NUD 1600MHz + * 0b0010 - 2GiB total - 1 x 2GiB micron MT52L256M32D1PF-107 1600MHz + * 0b0011 - 2GiB total - 1 x 2GiB Samsung K4E8E324EB-EGCF 1600MHz + * 0b0100 - 2GiB total - 1 x 2GiB Micron EDF8132A3MA-JD-F 1600MHz + * + * 0b1000 - 4GiB total - 2 x 2GiB Samsung K4E8E304EE-EGCF 1600MHz + * 0b1001 - 4GiB total - 2 x 2GiB Hynix H9CCNNN8GTMLAR-NUD 1600MHz + * 0b1010 - 4GiB total - 2 x 2GiB micron MT52L256M32D1PF-107 1600MHz + * 0b1011 - 4GiB total - 2 x 2GiB Samsung K4E8E324EB-EGCF 1600MHz + * 0b1100 - 4GiB total - 2 x 2GiB Micron EDF8132A3MA-JD-F 1600MHz + * + */ + +int get_variant_spd_index(int ram_id, int *dual) +{ + int spd_index = ram_id & 0x7; + + /* Determine if single or dual channel memory system */ + /* RAMID3 is deterministic for reks */ + *dual = ((ram_id > 3) & 0x1) ? 1 : 0; + + /* Display the RAM type */ + printk(BIOS_DEBUG, dual ? "4GiB " : "2GiB "); + switch (spd_index) { + case 0: + printk(BIOS_DEBUG, "Samsung K4E8E304EE-EGCF\n"); + break; + case 1: + printk(BIOS_DEBUG, "Hynix H9CCNNN8GTMLAR-NUD\n"); + break; + case 2: + printk(BIOS_DEBUG, "Micron MT52L256M32D1PF-107\n"); + break; + case 3: + printk(BIOS_DEBUG, "Samsung K4E8E324EB-EGCF\n"); + break; + case 4: + printk(BIOS_DEBUG, "Micron EDF8132A3MA-JD-F\n"); + break; + } + + return spd_index; +} |