diff options
| author | Matt DeVillier <matt.devillier@gmail.com> | 2017-11-01 00:20:16 -0500 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2017-11-03 21:57:04 +0000 |
| commit | 158170b0a8128780df7dded2e24be067133c8a7d (patch) | |
| tree | 81ac710840270e8b9441815ad428034966344c59 /src/mainboard/google/cyan/variants | |
| parent | 42ac3073300091bbce4024a5d072c700b870383a (diff) | |
google/reks: override RX ODT limit, RAM geometry if needed
Adapted from Chromium commit 6ee6f3d: Reks: To set the RX ODT limit...
Override RX ODT and DRAM geometry for Micron part MT52L256M32D1PF-107.
Use get_ramid() to determine if override is necessary.
Original-Change-Id: I41f3aba030a00152e1217533ef953338ac396605
Original-Signed-off-by: Kevin Chiu <Kevin.Chiu@quantatw.com>
Original-Reviewed-by: Kane Chen <kane.chen@intel.com>
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Original-Tested-by: Keith Tzeng <keith.tzeng@quantatw.com>
Change-Id: Iea8c3c67e5afb21285dc15ad665474ad5f192423
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/22268
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Diffstat (limited to 'src/mainboard/google/cyan/variants')
| -rw-r--r-- | src/mainboard/google/cyan/variants/reks/Makefile.inc | 1 | ||||
| -rw-r--r-- | src/mainboard/google/cyan/variants/reks/romstage.c | 47 |
2 files changed, 48 insertions, 0 deletions
diff --git a/src/mainboard/google/cyan/variants/reks/Makefile.inc b/src/mainboard/google/cyan/variants/reks/Makefile.inc index 65771247b9..db2eea3d29 100644 --- a/src/mainboard/google/cyan/variants/reks/Makefile.inc +++ b/src/mainboard/google/cyan/variants/reks/Makefile.inc @@ -14,6 +14,7 @@ ## GNU General Public License for more details. ## +romstage-y += romstage.c romstage-y += spd_util.c ramstage-y += gpio.c diff --git a/src/mainboard/google/cyan/variants/reks/romstage.c b/src/mainboard/google/cyan/variants/reks/romstage.c new file mode 100644 index 0000000000..5414cbd7d5 --- /dev/null +++ b/src/mainboard/google/cyan/variants/reks/romstage.c @@ -0,0 +1,47 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2013 Google Inc. + * Copyright (C) 2015 Intel Corp. + * + * 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 <soc/romstage.h> +#include <baseboard/variants.h> +#include <mainboard/google/cyan/spd/spd_util.h> + +void variant_memory_init_params(MEMORY_INIT_UPD *memory_params) +{ + int ram_id = get_ramid(); + + /* + * RAMID = A - 4GiB Micron MT52L256M32D1PF-107 + * RAMID = 2 - 2GiB Micron MT52L256M32D1PF-107 + */ + if (ram_id == 2 || ram_id == 0xA) { + + /* + * For new micron part, it requires read/receive + * enable training before sending cmds to get MR8. + * To override dram geometry settings as below: + * + * PcdDramWidth = x32 + * PcdDramDensity = 8Gb + * PcdDualRankDram = disable + */ + memory_params->PcdRxOdtLimitChannel0 = 1; + memory_params->PcdRxOdtLimitChannel1 = 1; + memory_params->PcdDisableAutoDetectDram = 1; + memory_params->PcdDramWidth = 2; + memory_params->PcdDramDensity = 3; + memory_params->PcdDualRankDram = 0; + } +} |