mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-17 18:28:55 +00:00
12770d0df0
AST2600 supports boot from SPI(mmap), eMMC, and UART. This patch adds the boot mode detection and return the corresponding boot device type. Signed-off-by: Chia-Wei Wang <chiawei_wang@aspeedtech.com>
79 lines
1.5 KiB
C
79 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (c) Aspeed Technology Inc.
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*/
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#include <common.h>
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#include <debug_uart.h>
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#include <dm.h>
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#include <spl.h>
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#include <init.h>
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#include <linux/err.h>
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#include <asm/io.h>
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#include <asm/arch/scu_ast2600.h>
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#include <asm/global_data.h>
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DECLARE_GLOBAL_DATA_PTR;
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void board_init_f(ulong dummy)
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{
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spl_early_init();
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preloader_console_init();
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timer_init();
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dram_init();
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}
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/*
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* Try to detect the boot mode. Fallback to the default,
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* memory mapped SPI XIP booting if detection failed.
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*/
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u32 spl_boot_device(void)
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{
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int rc;
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struct udevice *scu_dev;
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struct ast2600_scu *scu;
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rc = uclass_get_device_by_driver(UCLASS_CLK,
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DM_DRIVER_GET(aspeed_ast2600_scu), &scu_dev);
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if (rc) {
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debug("%s: failed to get SCU driver\n", __func__);
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goto out;
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}
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scu = devfdt_get_addr_ptr(scu_dev);
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if (IS_ERR_OR_NULL(scu)) {
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debug("%s: failed to get SCU base\n", __func__);
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goto out;
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}
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/* boot from UART has higher priority */
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if (scu->hwstrap2 & SCU_HWSTRAP2_BOOT_UART)
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return BOOT_DEVICE_UART;
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if (scu->hwstrap1 & SCU_HWSTRAP1_BOOT_EMMC)
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return BOOT_DEVICE_MMC1;
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out:
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return BOOT_DEVICE_RAM;
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}
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struct image_header *spl_get_load_buffer(ssize_t offset, size_t size)
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{
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return (struct image_header *)(CONFIG_SYS_LOAD_ADDR);
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}
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#ifdef CONFIG_SPL_OS_BOOT
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int spl_start_uboot(void)
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{
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/* boot linux */
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return 0;
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}
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#endif
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#ifdef CONFIG_SPL_LOAD_FIT
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int board_fit_config_name_match(const char *name)
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{
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/* just empty function now - can't decide what to choose */
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debug("%s: %s\n", __func__, name);
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return 0;
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}
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#endif
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