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https://github.com/u-boot/u-boot.git
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d5e6401011
Select environment location based on the device we boot from. Also, introduce a "boot" variable that represents the current boot device and can be used by scripts. Signed-off-by: Wadim Egorov <w.egorov@phytec.de>
123 lines
2.5 KiB
C
123 lines
2.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2022 - 2023 PHYTEC Messtechnik GmbH
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* Author: Wadim Egorov <w.egorov@phytec.de>
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*/
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#include <asm/io.h>
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#include <env.h>
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#include <env_internal.h>
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#include <spl.h>
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#include <fdt_support.h>
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#include <asm/arch/hardware.h>
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DECLARE_GLOBAL_DATA_PTR;
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int board_init(void)
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{
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return 0;
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}
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int dram_init(void)
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{
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return fdtdec_setup_mem_size_base();
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}
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int dram_init_banksize(void)
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{
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return fdtdec_setup_memory_banksize();
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}
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#define CTRLMMR_USB0_PHY_CTRL 0x43004008
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#define CTRLMMR_USB1_PHY_CTRL 0x43004018
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#define CORE_VOLTAGE 0x80000000
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#ifdef CONFIG_SPL_BOARD_INIT
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void spl_board_init(void)
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{
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u32 val;
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/* Set USB0 PHY core voltage to 0.85V */
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val = readl(CTRLMMR_USB0_PHY_CTRL);
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val &= ~(CORE_VOLTAGE);
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writel(val, CTRLMMR_USB0_PHY_CTRL);
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/* Set USB1 PHY core voltage to 0.85V */
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val = readl(CTRLMMR_USB1_PHY_CTRL);
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val &= ~(CORE_VOLTAGE);
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writel(val, CTRLMMR_USB1_PHY_CTRL);
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/* We have 32k crystal, so lets enable it */
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val = readl(MCU_CTRL_LFXOSC_CTRL);
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val &= ~(MCU_CTRL_LFXOSC_32K_DISABLE_VAL);
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writel(val, MCU_CTRL_LFXOSC_CTRL);
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/* Add any TRIM needed for the crystal here.. */
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/* Make sure to mux up to take the SoC 32k from the crystal */
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writel(MCU_CTRL_DEVICE_CLKOUT_LFOSC_SELECT_VAL,
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MCU_CTRL_DEVICE_CLKOUT_32K_CTRL);
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}
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#endif
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#if IS_ENABLED(CONFIG_ENV_IS_IN_FAT) || IS_ENABLED(CONFIG_ENV_IS_IN_MMC)
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int mmc_get_env_dev(void)
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{
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u32 boot_device = get_boot_device();
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switch (boot_device) {
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case BOOT_DEVICE_MMC1:
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return 0;
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case BOOT_DEVICE_MMC2:
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return 1;
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};
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return CONFIG_SYS_MMC_ENV_DEV;
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}
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#endif
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enum env_location env_get_location(enum env_operation op, int prio)
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{
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u32 boot_device = get_boot_device();
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if (prio)
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return ENVL_UNKNOWN;
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switch (boot_device) {
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case BOOT_DEVICE_MMC1:
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case BOOT_DEVICE_MMC2:
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if (CONFIG_IS_ENABLED(ENV_IS_IN_FAT))
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return ENVL_FAT;
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if (CONFIG_IS_ENABLED(ENV_IS_IN_MMC))
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return ENVL_MMC;
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case BOOT_DEVICE_SPI:
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if (CONFIG_IS_ENABLED(ENV_IS_IN_SPI_FLASH))
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return ENVL_SPI_FLASH;
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default:
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return ENVL_NOWHERE;
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};
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}
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#if IS_ENABLED(CONFIG_BOARD_LATE_INIT)
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int board_late_init(void)
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{
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u32 boot_device = get_boot_device();
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switch (boot_device) {
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case BOOT_DEVICE_MMC1:
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env_set_ulong("mmcdev", 0);
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env_set("boot", "mmc");
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break;
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case BOOT_DEVICE_MMC2:
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env_set_ulong("mmcdev", 1);
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env_set("boot", "mmc");
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break;
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case BOOT_DEVICE_SPI:
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env_set("boot", "spi");
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break;
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case BOOT_DEVICE_ETHERNET:
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env_set("boot", "net");
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break;
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};
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return 0;
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}
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#endif
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