From 27eba676e01314ba4475d5cd6b760c1c54a9c956 Mon Sep 17 00:00:00 2001
From: Jimmy Huang <jimmy.huang@mediatek.com>
Date: Fri, 31 Jul 2015 17:11:00 +0800
Subject: [PATCH] google/oak: Add soc ARM Trusted Firmware support

We define a mechanism to pass board specific parameters to BL31. The
idea is BL31 doesn't need to have the board revision knowledge, it
only needs to process the board specific parameters to initialize and
control specific hardware. In this way, we can support different boards
with same BL31 binary.

BRANCH=none
BUG=none
TEST=booted on oak-rev2 and oak-rev3 boards, and confirmed they got
     different board arguments in ARM TF

Change-Id: I0df2c6d7d1ffac7d443511c3317c142efeb5701e
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 0f9a4a2776110c5ddc113f0d605d4337d5773ace
Original-Change-Id: I985d9555238f5ac5385e126479140b772b36bac8
Original-Signed-off-by: Jimmy Huang <jimmy.huang@mediatek.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/292678
Original-Commit-Ready: Yidi Lin <yidi.lin@mediatek.com>
Original-Tested-by: Yidi Lin <yidi.lin@mediatek.com>
Original-Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/13101
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
---
 src/mainboard/google/oak/mainboard.c | 54 ++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)

diff --git a/src/mainboard/google/oak/mainboard.c b/src/mainboard/google/oak/mainboard.c
index 52d6bd41d7..15454183d4 100644
--- a/src/mainboard/google/oak/mainboard.c
+++ b/src/mainboard/google/oak/mainboard.c
@@ -21,12 +21,65 @@
 #include <device/device.h>
 
 #include <gpio.h>
+#include <soc/bl31_plat_params.h>
 #include <soc/mt6391.h>
 #include <soc/mtcmos.h>
 #include <soc/pinmux.h>
 #include <soc/pll.h>
 #include <soc/usb.h>
 
+static void register_da9212_to_bl31(void)
+{
+#if IS_ENABLED(CONFIG_ARM64_USE_ARM_TRUSTED_FIRMWARE)
+	static struct bl31_da9212_param param_da9212 = {
+		.h = {
+			.type = PARAM_CLUSTER1_DA9212,
+		},
+		.i2c_bus = 1,
+		.ic_en = {
+			.type = PARAM_GPIO_SOC,
+			.polarity = PARAM_GPIO_ACTIVE_HIGH,
+			.index = PAD_UCTS2,
+		},
+		.en_a = {
+			.type = PARAM_GPIO_MT6391,
+			.polarity = PARAM_GPIO_ACTIVE_HIGH,
+			.index = MT6391_KP_ROW4,
+		},
+		.en_b = {
+			.type = PARAM_GPIO_NONE,
+		},
+	};
+	register_bl31_param(&param_da9212.h);
+#endif
+}
+
+static void register_mt6311_to_bl31(void)
+{
+#if IS_ENABLED(CONFIG_ARM64_USE_ARM_TRUSTED_FIRMWARE)
+	static struct bl31_mt6311_param param_mt6311 = {
+		.h = {
+			.type = PARAM_CLUSTER1_MT6311,
+		},
+		.i2c_bus = 1,
+	};
+	register_bl31_param(&param_mt6311.h);
+#endif
+}
+
+static void configure_bl31(void)
+{
+	switch (board_id()) {
+	case 2:
+		register_da9212_to_bl31();
+		break;
+	default:
+		/* rev-3 and rev-4 use mt6311 as external buck */
+		register_mt6311_to_bl31();
+		break;
+	}
+}
+
 static void configure_audio(void)
 {
 	mtcmos_audio_power_on();
@@ -116,6 +169,7 @@ static void mainboard_init(device_t dev)
 	configure_audio();
 	configure_backlight();
 	configure_usb();
+	configure_bl31();
 }
 
 static void mainboard_enable(device_t dev)