u-boot/board/ea/mx7ulp_com/mx7ulp_com.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright (C) 2016 Freescale Semiconductor, Inc.
 */

#include <common.h>
#include <init.h>
#include <asm/global_data.h>
#include <asm/io.h>
#include <asm/arch/sys_proto.h>
#include <asm/arch/mx7ulp-pins.h>
#include <asm/arch/iomux.h>
#include <asm/gpio.h>

DECLARE_GLOBAL_DATA_PTR;

#define UART_PAD_CTRL		(PAD_CTL_PUS_UP)

int dram_init(void)
{
	gd->ram_size = imx_ddr_size();

#ifdef CONFIG_OPTEE_TZDRAM_SIZE
	gd->ram_size -= CONFIG_OPTEE_TZDRAM_SIZE;
#endif

	return 0;
}

static iomux_cfg_t const lpuart4_pads[] = {
	MX7ULP_PAD_PTC3__LPUART4_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
	MX7ULP_PAD_PTC2__LPUART4_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
};

static void setup_iomux_uart(void)
{
	mx7ulp_iomux_setup_multiple_pads(lpuart4_pads,
					 ARRAY_SIZE(lpuart4_pads));
}

int board_early_init_f(void)
{
	setup_iomux_uart();

	return 0;
}

int board_init(void)
{
	/* address of boot parameters */
	gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;

	return 0;
}