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https://github.com/ARM-software/arm-trusted-firmware.git
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7029e80683
The Rockchip ATF platform can be entered from both Coreboot and U-Boot. While Coreboot does submit the list of linked parameter structs as platform param, upstream u-boot actually always provides a pointer to a devicetree as parameter. This results in current ATF not running at all when started from U-Boot. To fix this, add a stub that checks if the parameter is a fdt so we can at least boot and not get stuck. Later on we can extend this with actual parsing of information from the devicetree. Signed-off-by: Heiko Stuebner <heiko@sntech.de> Cc: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
129 lines
2.9 KiB
C
129 lines
2.9 KiB
C
/*
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* Copyright (c) 2016, ARM Limited and Contributors. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <assert.h>
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#include <string.h>
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#include <common/bl_common.h>
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#include <common/debug.h>
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#include <drivers/console.h>
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#include <drivers/gpio.h>
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#include <libfdt.h>
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#include <lib/coreboot.h>
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#include <lib/mmio.h>
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#include <plat/common/platform.h>
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#include <plat_params.h>
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#include <plat_private.h>
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static struct gpio_info param_reset;
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static struct gpio_info param_poweroff;
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static struct bl31_apio_param param_apio;
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static struct gpio_info *rst_gpio;
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static struct gpio_info *poweroff_gpio;
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static struct gpio_info suspend_gpio[10];
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uint32_t suspend_gpio_cnt;
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static struct apio_info *suspend_apio;
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static uint8_t fdt_buffer[0x10000];
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void *plat_get_fdt(void)
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{
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return &fdt_buffer[0];
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}
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struct gpio_info *plat_get_rockchip_gpio_reset(void)
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{
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return rst_gpio;
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}
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struct gpio_info *plat_get_rockchip_gpio_poweroff(void)
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{
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return poweroff_gpio;
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}
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struct gpio_info *plat_get_rockchip_suspend_gpio(uint32_t *count)
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{
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*count = suspend_gpio_cnt;
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return &suspend_gpio[0];
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}
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struct apio_info *plat_get_rockchip_suspend_apio(void)
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{
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return suspend_apio;
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}
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static int dt_process_fdt(void *blob)
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{
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void *fdt = plat_get_fdt();
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int ret;
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ret = fdt_open_into(blob, fdt, 0x10000);
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if (ret < 0)
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return ret;
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return 0;
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}
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void params_early_setup(void *plat_param_from_bl2)
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{
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struct bl31_plat_param *bl2_param;
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struct bl31_gpio_param *gpio_param;
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/*
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* Test if this is a FDT passed as a platform-specific parameter
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* block.
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*/
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if (!dt_process_fdt(plat_param_from_bl2))
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return;
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/* keep plat parameters for later processing if need */
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bl2_param = (struct bl31_plat_param *)plat_param_from_bl2;
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while (bl2_param) {
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switch (bl2_param->type) {
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case PARAM_RESET:
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gpio_param = (struct bl31_gpio_param *)bl2_param;
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memcpy(¶m_reset, &gpio_param->gpio,
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sizeof(struct gpio_info));
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rst_gpio = ¶m_reset;
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break;
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case PARAM_POWEROFF:
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gpio_param = (struct bl31_gpio_param *)bl2_param;
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memcpy(¶m_poweroff, &gpio_param->gpio,
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sizeof(struct gpio_info));
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poweroff_gpio = ¶m_poweroff;
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break;
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case PARAM_SUSPEND_GPIO:
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if (suspend_gpio_cnt >= ARRAY_SIZE(suspend_gpio)) {
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ERROR("exceed support suspend gpio number\n");
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break;
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}
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gpio_param = (struct bl31_gpio_param *)bl2_param;
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memcpy(&suspend_gpio[suspend_gpio_cnt],
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&gpio_param->gpio,
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sizeof(struct gpio_info));
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suspend_gpio_cnt++;
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break;
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case PARAM_SUSPEND_APIO:
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memcpy(¶m_apio, bl2_param,
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sizeof(struct bl31_apio_param));
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suspend_apio = ¶m_apio.apio;
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break;
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#if COREBOOT
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case PARAM_COREBOOT_TABLE:
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coreboot_table_setup((void *)
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((struct bl31_u64_param *)bl2_param)->value);
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break;
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#endif
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default:
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ERROR("not expected type found %lld\n",
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bl2_param->type);
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break;
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}
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bl2_param = bl2_param->next;
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}
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}
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