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mediatek: mt8183: pass platform parameters

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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.

Signed-off-by: kenny liang <kenny.liang@mediatek.com>
Change-Id: Ie84cfc9606656fb1d2780a68cadf27e09afa6628
This commit is contained in:
kenny liang 2019-05-03 16:59:07 +08:00
parent 50cd952249
commit a561205724
5 changed files with 76 additions and 0 deletions
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19
include/export/plat/mediatek/common/plat_params_exp.h Normal file
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@ -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 */

35
plat/mediatek/common/params_setup.c Normal file
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@ -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);
}

17
plat/mediatek/common/plat_params.h Normal file
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@ -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

3
plat/mediatek/mt8183/bl31_plat_setup.c
View file

@ -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 @@ void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1,
{
static console_16550_t console;
params_early_setup(arg1);
console_16550_register(UART0_BASE, UART_CLOCK, UART_BAUDRATE, &console);
NOTICE("MT8183 bl31_setup\n");

2
plat/mediatek/mt8183/platform.mk
View file

@ -31,6 +31,7 @@ BL31_SOURCES += common/desc_image_load.c \
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 @@ BL31_SOURCES += common/desc_image_load.c \
${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 \