mb/google/volteer: Create Malefor variant

This commit creates a malefor variant for Volteer. The initial settings
override the baseboard was copied from variant ripto. Fine tune GPIO
and memory DQ based on malefor schematics.

BUG=b:150653745
BRANCH=volteer
TEST=emerge-volteer coreboot

Signed-off-by: William Wei <wenxu.wei@bitland.corp-partner.google.com>
Change-Id: Idbeebb13e537287686344740211143df35b7863a
Reviewed-on: https://review.coreboot.org/c/coreboot/+/39857
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

1 files changed, 40 insertions, 0 deletions

diff --git a/src/mainboard/google/volteer/variants/malefor/memory.c b/src/mainboard/google/volteer/variants/malefor/memory.c
new file mode 100644
index 0000000000..75ac762a47
--- /dev/null
+++ b/src/mainboard/google/volteer/variants/malefor/memory.c
@@ -0,0 +1,40 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
+
+#include <baseboard/variants.h>
+
+static const struct mb_lpddr4x_cfg malefor_memcfg = {
+	/* DQ byte map */
+	.dq_map = {
+	{  3,  1,  0,  2,  4,  6,  7,  5,   /* Byte 0 */
+	  12, 13, 14, 15,  8,  9, 10, 11 }, /* Byte 1 */
+	{  0,  7,  1,  6,  2,  4,  3,  5,   /* Byte 2 */
+	   8, 15, 14,  9, 13, 10, 12, 11 }, /* Byte 3 */
+	{  3,  2,  0,  1,  4,  5,  6,  7,   /* Byte 4 */
+	  12, 13, 15, 14,  8,  9, 10, 11 }, /* Byte 5 */
+	{  6,  0,  1,  7,  5,  4,  2,  3,   /* Byte 6 */
+	  15, 14,  8,  9, 10, 12, 11, 13 }, /* Byte 7 */
+	{  5,  0,  1,  3,  4,  2,  7,  6,   /* Byte 0 */
+	  11, 14, 13, 12,  8,  9, 15, 10 }, /* Byte 1 */
+	{  3,  4,  2,  5,  0,  6,  1,  7,   /* Byte 2 */
+	  13, 12, 11, 10, 14, 15,  9,  8 }, /* Byte 3 */
+	{  3,  2,  1,  0,  5,  4,  7,  6,   /* Byte 4 */
+	  12, 13, 15, 14,  8, 11,  9, 10 }, /* Byte 5 */
+	{  3,  4,  2,  5,  1,  0,  7,  6,   /* Byte 6 */
+	  15, 14,  9,  8, 12, 10, 11, 13 }  /* Byte 7 */
+	},
+
+	/* DQS CPU<>DRAM map */
+	.dqs_map = {
+	/* Ch 0     1         2         3 */
+	{ 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
+	{ 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }
+	},
+
+	.ect = 0, /* Disable Early Command Training */
+};
+
+const struct mb_lpddr4x_cfg *variant_memory_params(void)
+{
+	return &malefor_memcfg;
+}