mediatek: mt8183: pass platform parameters
Add plat parameter structs to support BL2 to pass
variable-length, variable-type parameters to BL31.
The parameters are structured as a link list.
During BL31 setup time, we traverse the list to process
each parameter.
Change-Id: Ie84cfc9606656fb1d2780a68cadf27e09afa6628
diff --git a/include/export/plat/mediatek/common/plat_params_exp.h b/include/export/plat/mediatek/common/plat_params_exp.h
new file mode 100644
index 0000000..d650030
--- /dev/null
+++ b/include/export/plat/mediatek/common/plat_params_exp.h
@@ -0,0 +1,19 @@
+/*
+ * Copyright (c) 2019, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef ARM_TRUSTED_FIRMWARE_EXPORT_PLAT_MEDIATEK_COMMON_PLAT_PARAMS_EXP_H
+#define ARM_TRUSTED_FIRMWARE_EXPORT_PLAT_MEDIATEK_COMMON_PLAT_PARAMS_EXP_H
+
+/* EXPORT HEADER -- See include/export/README for details! -- EXPORT HEADER */
+
+#include "../../../lib/bl_aux_params/bl_aux_params_exp.h"
+
+/* param type */
+enum bl_aux_mtk_param_type {
+ BL_AUX_PARAM_MTK_RESET_GPIO = BL_AUX_PARAM_VENDOR_SPECIFIC_FIRST,
+};
+
+#endif /* ARM_TRUSTED_FIRMWARE_EXPORT_PLAT_MEDIATEK_COMMON_PLAT_PARAMS_EXP_H */
diff --git a/plat/mediatek/common/params_setup.c b/plat/mediatek/common/params_setup.c
new file mode 100644
index 0000000..a9df13e
--- /dev/null
+++ b/plat/mediatek/common/params_setup.c
@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 2019, MediaTek Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <lib/bl_aux_params/bl_aux_params.h>
+#include <common/debug.h>
+#include <plat_params.h>
+#include <string.h>
+
+static struct bl_aux_gpio_info rst_gpio;
+
+struct bl_aux_gpio_info *plat_get_mtk_gpio_reset(void)
+{
+ return &rst_gpio;
+}
+
+static bool mtk_aux_param_handler(struct bl_aux_param_header *param)
+{
+ /* Store platform parameters for later processing if needed. */
+ switch (param->type) {
+ case BL_AUX_PARAM_MTK_RESET_GPIO:
+ rst_gpio = ((struct bl_aux_param_gpio *)param)->gpio;
+ return true;
+ }
+
+ return false;
+}
+
+void params_early_setup(u_register_t plat_param_from_bl2)
+{
+ bl_aux_params_parse(plat_param_from_bl2, mtk_aux_param_handler);
+}
+
diff --git a/plat/mediatek/common/plat_params.h b/plat/mediatek/common/plat_params.h
new file mode 100644
index 0000000..828c3dc
--- /dev/null
+++ b/plat/mediatek/common/plat_params.h
@@ -0,0 +1,17 @@
+/*
+ * Copyright (c) 2019, MediaTek Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef PLAT_PARAMS_H
+#define PLAT_PARAMS_H
+
+#include <stdint.h>
+
+#include <export/plat/mediatek/common/plat_params_exp.h>
+
+struct bl_aux_gpio_info *plat_get_mtk_gpio_reset(void);
+void params_early_setup(u_register_t plat_param_from_bl2);
+
+#endif
diff --git a/plat/mediatek/mt8183/bl31_plat_setup.c b/plat/mediatek/mt8183/bl31_plat_setup.c
index f20e8ac..ea39ff6 100644
--- a/plat/mediatek/mt8183/bl31_plat_setup.c
+++ b/plat/mediatek/mt8183/bl31_plat_setup.c
@@ -18,6 +18,7 @@
#include <mtk_plat_common.h>
#include <mtspmc.h>
#include <plat_debug.h>
+#include <plat_params.h>
#include <plat_private.h>
#include <platform_def.h>
#include <scu.h>
@@ -74,6 +75,8 @@
{
static console_16550_t console;
+ params_early_setup(arg1);
+
console_16550_register(UART0_BASE, UART_CLOCK, UART_BAUDRATE, &console);
NOTICE("MT8183 bl31_setup\n");
diff --git a/plat/mediatek/mt8183/platform.mk b/plat/mediatek/mt8183/platform.mk
index 9c2b964..8fb0151 100644
--- a/plat/mediatek/mt8183/platform.mk
+++ b/plat/mediatek/mt8183/platform.mk
@@ -31,6 +31,7 @@
drivers/delay_timer/generic_delay_timer.c \
drivers/gpio/gpio.c \
drivers/ti/uart/aarch64/16550_console.S \
+ lib/bl_aux_params/bl_aux_params.c \
lib/cpus/aarch64/aem_generic.S \
lib/cpus/aarch64/cortex_a53.S \
lib/cpus/aarch64/cortex_a73.S \
@@ -38,6 +39,7 @@
${MTK_PLAT}/common/mtk_plat_common.c \
${MTK_PLAT}/common/drivers/pmic_wrap/pmic_wrap_init.c \
${MTK_PLAT}/common/drivers/rtc/rtc_common.c \
+ ${MTK_PLAT}/common/params_setup.c \
${MTK_PLAT_SOC}/aarch64/plat_helpers.S \
${MTK_PLAT_SOC}/aarch64/platform_common.c \
${MTK_PLAT_SOC}/drivers/mcsi/mcsi.c \