2 files changed, 77 insertions, 0 deletions
diff --git a/src/mainboard/google/fatcat/variants/fatcat/Makefile.mk b/src/mainboard/google/fatcat/variants/fatcat/Makefile.mk
index 91f031e7a4..4c33dad4db 100644
--- a/src/mainboard/google/fatcat/variants/fatcat/Makefile.mk
+++ b/src/mainboard/google/fatcat/variants/fatcat/Makefile.mk
@@ -2,4 +2,5 @@
 
 bootblock-y += gpio.c
 romstage-y += gpio.c
+romstage-y += memory.c
 ramstage-y += gpio.c
diff --git a/src/mainboard/google/fatcat/variants/fatcat/memory.c b/src/mainboard/google/fatcat/variants/fatcat/memory.c
new file mode 100644
index 0000000000..e0908adabd
--- /dev/null
+++ b/src/mainboard/google/fatcat/variants/fatcat/memory.c
@@ -0,0 +1,76 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include <baseboard/variants.h>
+#include <soc/romstage.h>
+#include <soc/meminit.h>
+
+static const struct mb_cfg lp5_mem_config = {
+	.type = MEM_TYPE_LP5X,
+
+	.lpx_dq_map = {
+		.ddr0 = {
+			.dq0 = {  13,  14,  12,  15, 11,  10,  8,  9, },
+			.dq1 = {  7,  5,  4,  6,  0,  3,  1,  2 },
+		},
+		.ddr1 = {
+			.dq0 = {  1,  3,  0,  2,  7,  4,  6,  5, },
+			.dq1 = {  12,  13,  14,  15,  11,  10,  9,  8 },
+		},
+		.ddr2 = {
+			.dq0 = {  0,  2,  1,  3,  6,  4,  7,  5 },
+			.dq1 = {  14,  13,  15,  12,  8,  11,  10,  9, },
+		},
+		.ddr3 = {
+			.dq0 = {  6,  5,  7,  4,  2,  3,  1,  0, },
+			.dq1 = {  10,  8,  11,  9,  12,  15,  13,  14 },
+		},
+		.ddr4 = {
+			.dq0 = {  2,  1,  3,  0,  4,  7,  5,  6 },
+			.dq1 = {  15,  14,  12,  13,  9,  11,  10,  8, },
+		},
+		.ddr5 = {
+			.dq0 = {  6,  5,  7,  4,  3,  1,  0,  2, },
+			.dq1 = {  10,  9,  11,  8,  13,  14,  12,  15 },
+		},
+		.ddr6 = {
+			.dq0 = {  9,  10,  11,  8,  14,  12,  13, 15, },
+			.dq1 = {  0,  1,  2,  3,  5,  7,  4,  6 },
+		},
+		.ddr7 = {
+			.dq0 = {  0,  1,  2,  3,  7,  5,  6,  4, },
+			.dq1 = {  14,  13,  15,  12,  10,  8,  11,  9 },
+		},
+	},
+
+	.lpx_dqs_map = {
+		.ddr0 = { .dqs0 = 1, .dqs1 = 0 },
+		.ddr1 = { .dqs0 = 0, .dqs1 = 1 },
+		.ddr2 = { .dqs0 = 0, .dqs1 = 1 },
+		.ddr3 = { .dqs0 = 0, .dqs1 = 1 },
+		.ddr4 = { .dqs0 = 0, .dqs1 = 1 },
+		.ddr5 = { .dqs0 = 0, .dqs1 = 1 },
+		.ddr6 = { .dqs0 = 1, .dqs1 = 0 },
+		.ddr7 = { .dqs0 = 0, .dqs1 = 1 }
+	},
+
+	.ect = true, /* Early Command Training */
+
+	.lp_ddr_dq_dqs_re_training = 1,
+
+	.user_bd = BOARD_TYPE_ULT_ULX,
+
+	.lp5x_config = {
+		.ccc_config = 0xFF,
+	},
+};
+
+const struct mb_cfg *variant_memory_params(void)
+{
+	return &lp5_mem_config;
+}
+
+void variant_get_spd_info(struct mem_spd *spd_info)
+{
+	spd_info->topo = MEM_TOPO_MEMORY_DOWN;
+	spd_info->cbfs_index = 0;
+}