mediatek/mt8183: Add MMU operation support

Enable MMU in bootblock for performance, link common code to provide
mtk_mmu_after_dram() to update MMU table in romstage after dram ready,
implement mtk_soc_disable_l2c_sram(), and call
mtk_mmu_disable_l2c_sram() to turn off L2C sram in ramstage.

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

Change-Id: I4e35f8276ca23de7fd13da3515b9f48d944ead32
Signed-off-by: Tristan Shieh <tristan.shieh@mediatek.com>
Reviewed-on: https://review.coreboot.org/27303
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>

1 files changed, 36 insertions, 0 deletions

diff --git a/src/soc/mediatek/mt8183/soc.c b/src/soc/mediatek/mt8183/soc.c
new file mode 100644
index 0000000000..b8348a1457
--- /dev/null
+++ b/src/soc/mediatek/mt8183/soc.c
@@ -0,0 +1,36 @@
+/*
+ * 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 <device/device.h>
+#include <soc/mmu_operations.h>
+
+static void soc_init(struct device *dev)
+{
+	mtk_mmu_disable_l2c_sram();
+}
+
+static struct device_operations soc_ops = {
+	.init = soc_init,
+};
+
+static void enable_soc_dev(struct device *dev)
+{
+	dev->ops = &soc_ops;
+}
+
+struct chip_operations soc_mediatek_mt8183_ops = {
+	CHIP_NAME("SOC Mediatek MT8183")
+	.enable_dev = enable_soc_dev,
+};