siemens/mc_apl4: Overwrite swizzle data for LPDDR4

This mainboard is equipped with LPDDR4 modules. The corresponding memory
swizzle data must be set for this purpose.

Change-Id: I4017de0713f0df5e614086912fc39d8eb6562702
Signed-off-by: Mario Scheithauer <mario.scheithauer@siemens.com>
Reviewed-on: https://review.coreboot.org/29624
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Uwe Pöche <uwe.poeche@siemens.com>
Reviewed-by: Werner Zeh <werner.zeh@siemens.com>

2 files changed, 70 insertions, 0 deletions

diff --git a/src/mainboard/siemens/mc_apl1/variants/mc_apl4/Makefile.inc b/src/mainboard/siemens/mc_apl1/variants/mc_apl4/Makefile.inc
index f3c87b2318..caf542fcd2 100644
--- a/src/mainboard/siemens/mc_apl1/variants/mc_apl4/Makefile.inc
+++ b/src/mainboard/siemens/mc_apl1/variants/mc_apl4/Makefile.inc
@@ -1 +1,3 @@
+romstage-y += memory.c
+
 ramstage-y += mainboard.c
diff --git a/src/mainboard/siemens/mc_apl1/variants/mc_apl4/memory.c b/src/mainboard/siemens/mc_apl1/variants/mc_apl4/memory.c
new file mode 100644
index 0000000000..9820f1e34e
--- /dev/null
+++ b/src/mainboard/siemens/mc_apl1/variants/mc_apl4/memory.c
@@ -0,0 +1,68 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2016 Google Inc.
+ * Copyright (C) 2017-2018 Siemens AG
+ *
+ * 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>
+#include <commonlib/helpers.h>
+#include <soc/meminit.h>
+
+const struct lpddr4_swizzle_cfg mc_apl4_lpddr4_swizzle = {
+	/* CH0_DQA[0:31] SoC pins -> U22 LPDDR4 module pins */
+	.phys[LP4_PHYS_CH0A] = {
+		/* DQA[0:7] pins of LPDDR4 module. */
+		.dqs[LP4_DQS0] = { 0, 1, 5, 3, 4, 7, 6, 2 },
+		/* DQA[8:15] pins of LPDDR4 module. */
+		.dqs[LP4_DQS1] = { 11, 15, 14, 9, 8, 12, 13, 10 },
+		/* DQB[0:7] pins of LPDDR4 module with offset of 16. */
+		.dqs[LP4_DQS2] = { 16, 22, 23, 21, 19, 17, 18, 20 },
+		/* DQB[7:15] pins of LPDDR4 module with offset of 16. */
+		.dqs[LP4_DQS3] = { 30, 26, 31, 25, 24, 27, 28, 29 },
+	},
+	.phys[LP4_PHYS_CH0B] = {
+		/* DQA[0:7] pins of LPDDR4 module. */
+		.dqs[LP4_DQS0] = { 7, 3, 2, 1, 4, 0, 6, 5 },
+		/* DQA[8:15] pins of LPDDR4 module. */
+		.dqs[LP4_DQS1] = { 14, 8, 9, 15, 10, 13, 12, 11 },
+		/* DQB[0:7] pins of LPDDR4 module with offset of 16. */
+		.dqs[LP4_DQS2] = { 23, 21, 20, 16, 19, 17, 18, 22 },
+		/* DQB[7:15] pins of LPDDR4 module with offset of 16. */
+		.dqs[LP4_DQS3] = { 24, 25, 26, 28, 29, 31, 30, 27 },
+	},
+	.phys[LP4_PHYS_CH1A] = {
+		/* DQA[0:7] pins of LPDDR4 module. */
+		.dqs[LP4_DQS0] = { 6, 3, 1, 7, 4, 2, 5, 0 },
+		/* DQA[8:15] pins of LPDDR4 module. */
+		.dqs[LP4_DQS1] = { 14, 15, 12, 13, 11, 8, 10, 9 },
+		/* DQB[0:7] pins of LPDDR4 module with offset of 16. */
+		.dqs[LP4_DQS2] = { 16, 22, 17, 18, 20, 21, 23, 19 },
+		/* DQB[7:15] pins of LPDDR4 module with offset of 16. */
+		.dqs[LP4_DQS3] = { 31, 28, 26, 25, 29, 24, 27, 30 },
+	},
+	.phys[LP4_PHYS_CH1B] = {
+		/* DQA[0:7] pins of LPDDR4 module. */
+		.dqs[LP4_DQS0] = { 3, 5, 7, 4, 1, 0, 6, 2 },
+		/* DQA[8:15] pins of LPDDR4 module. */
+		.dqs[LP4_DQS1] = { 14, 13, 10, 11, 15, 9, 8, 12 },
+		/* DQB[0:7] pins of LPDDR4 module with offset of 16. */
+		.dqs[LP4_DQS2] = { 23, 18, 19, 22, 16, 17, 21, 20 },
+		/* DQB[7:15] pins of LPDDR4 module with offset of 16. */
+		.dqs[LP4_DQS3] = { 24, 31, 30, 29, 26, 27, 25, 28 },
+	},
+};
+
+const struct lpddr4_swizzle_cfg *variant_lpddr4_swizzle_config(void)
+{
+	return &mc_apl4_lpddr4_swizzle;
+}