u-boot-brain/board/freescale/imx8mp_evk/imx8mp_evk.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright 2019 NXP
 */

#include <common.h>
#include <errno.h>
#include <asm/mach-imx/iomux-v3.h>
#include <asm-generic/gpio.h>
#include <asm/arch/imx8mp_pins.h>
#include <asm/arch/sys_proto.h>
#include <asm/mach-imx/gpio.h>

DECLARE_GLOBAL_DATA_PTR;

#define UART_PAD_CTRL	(PAD_CTL_DSE6 | PAD_CTL_FSEL1)
#define WDOG_PAD_CTRL	(PAD_CTL_DSE6 | PAD_CTL_ODE | PAD_CTL_PUE | PAD_CTL_PE)

static iomux_v3_cfg_t const uart_pads[] = {
	MX8MP_PAD_UART2_RXD__UART2_DCE_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
	MX8MP_PAD_UART2_TXD__UART2_DCE_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
};

static iomux_v3_cfg_t const wdog_pads[] = {
	MX8MP_PAD_GPIO1_IO02__WDOG1_WDOG_B  | MUX_PAD_CTRL(WDOG_PAD_CTRL),
};

int board_early_init_f(void)
{
	struct wdog_regs *wdog = (struct wdog_regs *)WDOG1_BASE_ADDR;

	imx_iomux_v3_setup_multiple_pads(wdog_pads, ARRAY_SIZE(wdog_pads));

	set_wdog_reset(wdog);

	imx_iomux_v3_setup_multiple_pads(uart_pads, ARRAY_SIZE(uart_pads));

	return 0;
}

int dram_init(void)
{
	/* rom_pointer[1] contains the size of TEE occupies */
	if (rom_pointer[1])
		gd->ram_size = PHYS_SDRAM_SIZE - rom_pointer[1];
	else
		gd->ram_size = PHYS_SDRAM_SIZE;

#if CONFIG_NR_DRAM_BANKS > 1
	gd->ram_size += PHYS_SDRAM_2_SIZE;
#endif

	return 0;
}

int dram_init_banksize(void)
{
	gd->bd->bi_dram[0].start = PHYS_SDRAM;
	if (rom_pointer[1])

		gd->bd->bi_dram[0].size = PHYS_SDRAM_SIZE - rom_pointer[1];
	else
		gd->bd->bi_dram[0].size = PHYS_SDRAM_SIZE;

#if CONFIG_NR_DRAM_BANKS > 1
	gd->bd->bi_dram[1].start = PHYS_SDRAM_2;
	gd->bd->bi_dram[1].size = PHYS_SDRAM_2_SIZE;
#endif

	return 0;
}

phys_size_t get_effective_memsize(void)
{
	if (rom_pointer[1])
		return (PHYS_SDRAM_SIZE - rom_pointer[1]);
	else
		return PHYS_SDRAM_SIZE;
}

int board_init(void)
{
	return 0;
}

int board_late_init(void)
{
#ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
	env_set("board_name", "EVK");
	env_set("board_rev", "iMX8MP");
#endif

	return 0;
}