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mb/google/poppy/variants/rammus: add memory configuration 

Add memory configuration based on the proto board schematics

BUG=b:111579386
BRANCH=Master
TEST=Build pass

Change-Id: I45efdc7893b5bcbca0de6e932e1452cc1a2ff028
Signed-off-by: Zhuohao Lee <zhuohao@chromium.org>
Reviewed-on: https://review.coreboot.org/27806
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
This commit is contained in:
Zhuohao Lee 2018-08-02 23:47:55 +08:00 committed by Patrick Georgi
parent bd6f00f7a3
commit 3d1bd1f042
2 changed files with 52 additions and 0 deletions
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3
src/mainboard/google/poppy/variants/rammus/Makefile.inc
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@ -1,2 +1,5 @@
SPD_SOURCES = empty # 0b0000
romstage-y += memory.c
ramstage-y += nhlt.c

49
src/mainboard/google/poppy/variants/rammus/memory.c Normal file
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@ -0,0 +1,49 @@
/*
* This file is part of the coreboot project.
*
* Copyright 2018 Google Inc.
*
* 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 <baseboard/variants.h>
/* DQ byte map */
static const u8 dq_map[][12] = {
{ 0x0F, 0xF0, 0x00, 0xF0, 0x0F, 0xF0,
0x0F, 0x00, 0xFF, 0x00, 0xFF, 0x00 },
{ 0x33, 0xCC, 0x00, 0xCC, 0x33, 0xCC,
0x33, 0x00, 0xFF, 0x00, 0xFF, 0x00 }
};
/* DQS CPU<>DRAM map */
static const u8 dqs_map[][8] = {
{ 0, 1, 3, 2, 4, 5, 6, 7 },
{ 1, 0, 4, 5, 2, 3, 6, 7 },
};
/* Rcomp resistor */
static const u16 rcomp_resistor[] = { 200, 81, 162 };
/* Rcomp target */
static const u16 rcomp_target[] = { 100, 40, 40, 23, 40 };
void variant_memory_params(struct memory_params *p)
{
p->type = MEMORY_LPDDR3;
p->dq_map = dq_map;
p->dq_map_size = sizeof(dq_map);
p->dqs_map = dqs_map;
p->dqs_map_size = sizeof(dqs_map);
p->rcomp_resistor = rcomp_resistor;
p->rcomp_resistor_size = sizeof(rcomp_resistor);
p->rcomp_target = rcomp_target;
p->rcomp_target_size = sizeof(rcomp_target);
}