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https://github.com/smaeul/u-boot.git
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ef19131b80
Currently, if MTD NOR is enabled then U-Boot tries to issue flash
commands even when CFI flash DT node is not present. This causes
access fault on RISC-V emulators or ISS which do not emulate CFI
flash. To handle this issue, we implement is_flash_available() for
qemu-riscv board which will return 1 only if CFI flash DT node is
present.
Fixes: d248627f9d42 ("riscv: qemu: Enable MTD NOR flash support")
Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Reviewed-by: Rick Chen <rick@andestech.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
93 lines
1.7 KiB
C
93 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2018, Bin Meng <bmeng.cn@gmail.com>
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*/
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#include <common.h>
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#include <dm.h>
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#include <dm/ofnode.h>
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#include <env.h>
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#include <fdtdec.h>
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#include <image.h>
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#include <log.h>
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#include <spl.h>
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#include <init.h>
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#include <virtio_types.h>
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#include <virtio.h>
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DECLARE_GLOBAL_DATA_PTR;
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#if IS_ENABLED(CONFIG_MTD_NOR_FLASH)
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int is_flash_available(void)
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{
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if (!ofnode_equal(ofnode_by_compatible(ofnode_null(), "cfi-flash"),
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ofnode_null()))
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return 1;
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return 0;
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}
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#endif
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int board_init(void)
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{
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/*
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* Make sure virtio bus is enumerated so that peripherals
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* on the virtio bus can be discovered by their drivers
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*/
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virtio_init();
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return 0;
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}
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int board_late_init(void)
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{
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ulong kernel_start;
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ofnode chosen_node;
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int ret;
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chosen_node = ofnode_path("/chosen");
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if (!ofnode_valid(chosen_node)) {
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debug("No chosen node found, can't get kernel start address\n");
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return 0;
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}
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#ifdef CONFIG_ARCH_RV64I
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ret = ofnode_read_u64(chosen_node, "riscv,kernel-start",
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(u64 *)&kernel_start);
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#else
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ret = ofnode_read_u32(chosen_node, "riscv,kernel-start",
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(u32 *)&kernel_start);
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#endif
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if (ret) {
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debug("Can't find kernel start address in device tree\n");
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return 0;
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}
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env_set_hex("kernel_start", kernel_start);
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return 0;
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}
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#ifdef CONFIG_SPL
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u32 spl_boot_device(void)
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{
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/* RISC-V QEMU only supports RAM as SPL boot device */
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return BOOT_DEVICE_RAM;
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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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/* boot using first FIT config */
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return 0;
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}
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#endif
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void *board_fdt_blob_setup(int *err)
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{
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*err = 0;
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/* Stored the DTB address there during our init */
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return (void *)(ulong)gd->arch.firmware_fdt_addr;
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}
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