u-boot/board/emulation/qemu-riscv/qemu-riscv.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright (C) 2018, Bin Meng <bmeng.cn@gmail.com>
 */

#include <common.h>
#include <dm.h>
#include <dm/ofnode.h>
#include <env.h>
#include <fdtdec.h>
#include <image.h>
#include <log.h>
#include <spl.h>
#include <init.h>
#include <usb.h>
#include <virtio_types.h>
#include <virtio.h>

DECLARE_GLOBAL_DATA_PTR;

#if IS_ENABLED(CONFIG_MTD_NOR_FLASH)
int is_flash_available(void)
{
	if (!ofnode_equal(ofnode_by_compatible(ofnode_null(), "cfi-flash"),
			  ofnode_null()))
		return 1;

	return 0;
}
#endif

int board_init(void)
{
	/*
	 * Make sure virtio bus is enumerated so that peripherals
	 * on the virtio bus can be discovered by their drivers
	 */
	virtio_init();

	return 0;
}

int board_late_init(void)
{
	/* start usb so that usb keyboard can be used as input device */
	if (CONFIG_IS_ENABLED(USB_KEYBOARD))
		usb_init();

	return 0;
}

#ifdef CONFIG_SPL
u32 spl_boot_device(void)
{
	/* RISC-V QEMU only supports RAM as SPL boot device */
	return BOOT_DEVICE_RAM;
}
#endif

#ifdef CONFIG_SPL_LOAD_FIT
int board_fit_config_name_match(const char *name)
{
	/* boot using first FIT config */
	return 0;
}
#endif

void *board_fdt_blob_setup(int *err)
{
	*err = 0;
	/* Stored the DTB address there during our init */
	return (void *)(ulong)gd->arch.firmware_fdt_addr;
}