google/kukui: Initialize DRAM from romstage

Add DRAM support for google kukui.

BUG=b:80501386
BRANCH=none
TEST=Boots correctly on Kukui

Change-Id: I1ed01404343745c883b22a648966327bdcabc5c2
Signed-off-by: Huayang Duan <huayang.duan@mediatek.com>
Reviewed-on: https://review.coreboot.org/c/28438
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>

1 files changed, 37 insertions, 0 deletions

diff --git a/src/mainboard/google/kukui/sdram_configs.c b/src/mainboard/google/kukui/sdram_configs.c
new file mode 100644
index 0000000000..25bbe8ffe2
--- /dev/null
+++ b/src/mainboard/google/kukui/sdram_configs.c
@@ -0,0 +1,37 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2018 MediaTek 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 <boardid.h>
+#include <cbfs.h>
+#include <console/console.h>
+#include <soc/emi.h>
+
+static const char *const sdram_configs[] = {
+	[1] = "sdram-lpddr4x-H9HCNNNCPMALHR-4GB",
+};
+
+static struct sdram_params params;
+
+const struct sdram_params *get_sdram_config(void)
+{
+	uint32_t ramcode = ram_code();
+
+	if (ramcode >= ARRAY_SIZE(sdram_configs) ||
+	    cbfs_boot_load_file(sdram_configs[ramcode], &params, sizeof(params),
+				CBFS_TYPE_STRUCT) != sizeof(params))
+		die("Cannot load SDRAM parameter file!");
+
+	return &params;
+}