Change in coreboot[master]: google/kukui: Initialize DRAM from romstage

[Tristan Hsieh (Code Review)]

Tristan Hsieh has uploaded this change for review. ( https://review.coreboot.org/28438

Change subject: google/kukui: Initialize DRAM from romstage
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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 
---
M src/mainboard/google/kukui/Makefile.inc
M src/mainboard/google/kukui/romstage.c
A src/mainboard/google/kukui/sdram_configs.c
A src/mainboard/google/kukui/sdram_inf/sdram-lpddr4x-H9HCNNNCPMALHR-4GB.inc
4 files changed, 53 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/38/28438/1

diff --git a/src/mainboard/google/kukui/Makefile.inc b/src/mainboard/google/kukui/Makefile.inc
index aa6bf11..e077358 100644
--- a/src/mainboard/google/kukui/Makefile.inc
+++ b/src/mainboard/google/kukui/Makefile.inc
@@ -9,6 +9,7 @@
 romstage-y += chromeos.c
 romstage-y += memlayout.ld
 romstage-y += romstage.c
+romstage-y += sdram_configs.c

ramstage-y += chromeos.c
 ramstage-y += mainboard.c
diff --git a/src/mainboard/google/kukui/romstage.c b/src/mainboard/google/kukui/romstage.c
index 9eeaa68..7c5a70d 100644
--- a/src/mainboard/google/kukui/romstage.c
+++ b/src/mainboard/google/kukui/romstage.c
@@ -15,8 +15,10 @@

#include <arch/stages.h>
 #include <soc/mmu_operations.h>
+#include <soc/emi.h>

void platform_romstage_main(void)
 {
+	mt_mem_init(get_sdram_config());
    mtk_mmu_after_dram();
 }
diff --git a/src/mainboard/google/kukui/sdram_configs.c b/src/mainboard/google/kukui/sdram_configs.c
new file mode 100644
index 0000000..00a38c4
--- /dev/null
+++ b/src/mainboard/google/kukui/sdram_configs.c
@@ -0,0 +1,25 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2017 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 <soc/emi.h>
+
+static const struct sdram_params sdram_configs[] = {
+#include "sdram_inf/sdram-lpddr4x-H9HCNNNCPMALHR-4GB.inc"
+};
+
+const struct sdram_params *get_sdram_config(void)
+{
+	return &sdram_configs[0];
+}
diff --git a/src/mainboard/google/kukui/sdram_inf/sdram-lpddr4x-H9HCNNNCPMALHR-4GB.inc b/src/mainboard/google/kukui/sdram_inf/sdram-lpddr4x-H9HCNNNCPMALHR-4GB.inc
new file mode 100644
index 0000000..13ac4b8
--- /dev/null
+++ b/src/mainboard/google/kukui/sdram_inf/sdram-lpddr4x-H9HCNNNCPMALHR-4GB.inc
@@ -0,0 +1,25 @@
+{
+	.impedance = {
+		[ODT_OFF] = {0x7, 0x6, 0x0, 0xF},
+		[ODT_ON] = {0x9, 0x9, 0x0, 0xF}
+	},
+	.wr_level = {
+		[CHANNEL_A] = {{0x22, 0x1b}, {0x22, 0x19}},
+		[CHANNEL_B] = {{0x24, 0x20}, {0x25, 0x20}}
+	},
+	.cbt_cs = {
+		[CHANNEL_A] = {0x0, 0x0},
+		[CHANNEL_B] = {0x0, 0x0}
+	},
+	.cbt_mr12 = {
+		[CHANNEL_A] = {0x52, 0x52},
+		[CHANNEL_B] = {0x52, 0x52}
+	},
+	.clk_delay = 0x0,
+	.dqs_delay = {0x1, -2},
+	.EMI_CONA_VAL = 0xF053F154,
+	.EMI_CONH_VAL = 0x44440003,
+	.EMI_CONF_VAL = 0x00421000,
+	.CHN_EMI_CONA_VAL = {0x0444F051, 0x0444F051},
+	.cbt_mode_extern = CBT_NORMAL_MODE,
+},