u-boot/board/starfive/visionfive2/spl.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright (C) 2022 StarFive Technology Co., Ltd.
 * Author: Yanhong Wang<yanhong.wang@starfivetech.com>
 */

#include <common.h>
#include <asm/arch/regs.h>
#include <asm/arch/spl.h>
#include <asm/io.h>
#include <log.h>
#include <spl.h>

#define JH7110_CLK_CPU_ROOT_OFFSET		0x0U
#define JH7110_CLK_CPU_ROOT_SHIFT		24
#define JH7110_CLK_CPU_ROOT_MASK		GENMASK(29, 24)

int spl_board_init_f(void)
{
	int ret;

	ret = spl_soc_init();
	if (ret) {
		debug("JH7110 SPL init failed: %d\n", ret);
		return ret;
	}

	return 0;
}

u32 spl_boot_device(void)
{
	u32 mode;

	mode = in_le32(JH7110_BOOT_MODE_SELECT_REG)
				& JH7110_BOOT_MODE_SELECT_MASK;
	switch (mode) {
	case 0:
		return BOOT_DEVICE_SPI;

	case 1:
		return BOOT_DEVICE_MMC2;

	case 2:
		return BOOT_DEVICE_MMC1;

	case 3:
		return BOOT_DEVICE_UART;

	default:
		debug("Unsupported boot device 0x%x.\n", mode);
		return BOOT_DEVICE_NONE;
	}
}

void board_init_f(ulong dummy)
{
	int ret;

	ret = spl_early_init();
	if (ret)
		panic("spl_early_init() failed: %d\n", ret);

	riscv_cpu_setup(NULL, NULL);
	preloader_console_init();

	/* Set the parent clock of cpu_root clock to pll0,
	 * it must be initialized here
	 */
	clrsetbits_le32(JH7110_SYS_CRG + JH7110_CLK_CPU_ROOT_OFFSET,
			JH7110_CLK_CPU_ROOT_MASK,
			BIT(JH7110_CLK_CPU_ROOT_SHIFT));

	ret = spl_board_init_f();
	if (ret) {
		debug("spl_board_init_f init failed: %d\n", ret);
		return;
	}
}

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