mb/google/brya/variant/agah: Update memory settings

Based on the agah schematic, add memory settings.

BUG=b:215662929
TEST=none

Signed-off-by: Bora Guvendik <bora.guvendik@intel.com>
Change-Id: Ib45241d708d025ca75ed06e2bcf3997558723a62
Reviewed-on: https://review.coreboot.org/c/coreboot/+/61313
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>

2 files changed, 72 insertions, 0 deletions

diff --git a/src/mainboard/google/brya/variants/agah/Makefile.inc b/src/mainboard/google/brya/variants/agah/Makefile.inc
index d38141ca24..139345f260 100644
--- a/src/mainboard/google/brya/variants/agah/Makefile.inc
+++ b/src/mainboard/google/brya/variants/agah/Makefile.inc
@@ -3,4 +3,6 @@ bootblock-y += gpio.c
 
 romstage-y += gpio.c
 
+romstage-y += memory.c
+
 ramstage-y += gpio.c
diff --git a/src/mainboard/google/brya/variants/agah/memory.c b/src/mainboard/google/brya/variants/agah/memory.c
new file mode 100644
index 0000000000..ef5e69a064
--- /dev/null
+++ b/src/mainboard/google/brya/variants/agah/memory.c
@@ -0,0 +1,70 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include <baseboard/variants.h>
+
+static const struct mb_cfg baseboard_memcfg = {
+	.type = MEM_TYPE_LP4X,
+
+	.rcomp = {
+		/* Baseboard uses only 100ohm Rcomp resistors */
+		.resistor = 100,
+
+		/* Baseboard Rcomp target values */
+		.targets = {40, 30, 30, 30, 30},
+	},
+
+	/* DQ byte map */
+	.lpx_dq_map = {
+		.ddr0 = {
+			.dq0 = {  3,  2,  0,  1,  4,  7,  6,  5, },  /* DDR_A_DQ0 */
+			.dq1 = { 12, 13, 14, 15,  9, 10,  8, 11, },  /* DDR_A_DQ1 */
+		},
+		.ddr1 = {
+			.dq0 = { 14,  8,  9, 15, 10, 12, 11, 13, },  /* DDR_A_DQ2 */
+			.dq1 = {  1,  7,  6,  0,  5,  3,  4,  2, },  /* DDR_A_DQ3 */
+		},
+		.ddr2 = {
+			.dq0 = {  2,  3,  1,  0,  6,  5,  7,  4, },  /* DDR_A_DQ4 */
+			.dq1 = { 12, 13, 14, 15, 10, 11,  9,  8, },  /* DDR_A_DQ5 */
+		},
+		.ddr3 = {
+			.dq0 = {  1,  2,  0,  3,  5,  6,  7,  4, },  /* DDR_A_DQ6 */
+			.dq1 = { 15, 14, 13, 12, 10,  9,  8, 11, },  /* DDR_A_DQ7 */
+		},
+		.ddr4 = {
+			.dq0 = {  3,  2,  1,  0,  7,  6,  5,  4, },  /* DDR_B_DQ0 */
+			.dq1 = { 12, 15, 13, 14,  8,  9, 10, 11, },  /* DDR_B_DQ1 */
+		},
+		.ddr5 = {
+			.dq0 = { 14,  8,  9, 15, 12, 10, 11, 13, },  /* DDR_B_DQ2 */
+			.dq1 = {  1,  7,  6,  0,  5,  2,  4,  3, },  /* DDR_B_DQ3 */
+		},
+		.ddr6 = {
+			.dq0 = { 13, 12, 15, 14,  8, 10,  9, 11, },  /* DDR_B_DQ4 */
+			.dq1 = {  7,  4,  6,  5,  1,  0,  3,  2, },  /* DDR_B_DQ5 */
+		},
+		.ddr7 = {
+			.dq0 = {  6,  0,  7,  5,  3,  2,  1,  4, },  /* DDR_B_DQ6 */
+			.dq1 = { 10,  8, 13, 12,  9, 14, 15, 11, },  /* DDR_B_DQ7 */
+		},
+	},
+
+	/* DQS CPU<>DRAM map */
+	.lpx_dqs_map = {
+		.ddr0 = { .dqs0 = 0, .dqs1 = 1 },
+		.ddr1 = { .dqs0 = 1, .dqs1 = 0 },
+		.ddr2 = { .dqs0 = 0, .dqs1 = 1 },
+		.ddr3 = { .dqs0 = 0, .dqs1 = 1 },
+		.ddr4 = { .dqs0 = 0, .dqs1 = 1 },
+		.ddr5 = { .dqs0 = 1, .dqs1 = 0 },
+		.ddr6 = { .dqs0 = 1, .dqs1 = 0 },
+		.ddr7 = { .dqs0 = 0, .dqs1 = 1 },
+	},
+
+	.ect = 1, /* Enable Early Command Training */
+};
+
+const struct mb_cfg *__weak variant_memory_params(void)
+{
+	return &baseboard_memcfg;
+}