u-boot/board/samsung/smdkv310/smdkv310.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright (C) 2011 Samsung Electronics
 */

#include <common.h>
#include <init.h>
#include <log.h>
#include <net.h>
#include <asm/global_data.h>
#include <asm/gpio.h>
#include <asm/io.h>
#include <netdev.h>
#include <asm/arch/cpu.h>
#include <asm/arch/mmc.h>
#include <asm/arch/periph.h>
#include <asm/arch/pinmux.h>
#include <asm/arch/sromc.h>

DECLARE_GLOBAL_DATA_PTR;

static void smc9115_pre_init(void)
{
	u32 smc_bw_conf, smc_bc_conf;

	/* gpio configuration GPK0CON */
	gpio_cfg_pin(EXYNOS4_GPIO_Y00 + CFG_ENV_SROM_BANK, S5P_GPIO_FUNC(2));

	/* Ethernet needs bus width of 16 bits */
	smc_bw_conf = SROMC_DATA16_WIDTH(CFG_ENV_SROM_BANK);
	smc_bc_conf = SROMC_BC_TACS(0x0F) | SROMC_BC_TCOS(0x0F)
			| SROMC_BC_TACC(0x0F) | SROMC_BC_TCOH(0x0F)
			| SROMC_BC_TAH(0x0F)  | SROMC_BC_TACP(0x0F)
			| SROMC_BC_PMC(0x0F);

	/* Select and configure the SROMC bank */
	s5p_config_sromc(CFG_ENV_SROM_BANK, smc_bw_conf, smc_bc_conf);
}

int board_init(void)
{
	smc9115_pre_init();

	gd->bd->bi_boot_params = (PHYS_SDRAM_1 + 0x100UL);
	return 0;
}

int dram_init(void)
{
	gd->ram_size	= get_ram_size((long *)PHYS_SDRAM_1, PHYS_SDRAM_1_SIZE)
			+ get_ram_size((long *)PHYS_SDRAM_2, PHYS_SDRAM_2_SIZE)
			+ get_ram_size((long *)PHYS_SDRAM_3, PHYS_SDRAM_3_SIZE)
			+ get_ram_size((long *)PHYS_SDRAM_4, PHYS_SDRAM_4_SIZE);

	return 0;
}

int dram_init_banksize(void)
{
	gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
	gd->bd->bi_dram[0].size = get_ram_size((long *)PHYS_SDRAM_1,
							PHYS_SDRAM_1_SIZE);
	gd->bd->bi_dram[1].start = PHYS_SDRAM_2;
	gd->bd->bi_dram[1].size = get_ram_size((long *)PHYS_SDRAM_2,
							PHYS_SDRAM_2_SIZE);
	gd->bd->bi_dram[2].start = PHYS_SDRAM_3;
	gd->bd->bi_dram[2].size = get_ram_size((long *)PHYS_SDRAM_3,
							PHYS_SDRAM_3_SIZE);
	gd->bd->bi_dram[3].start = PHYS_SDRAM_4;
	gd->bd->bi_dram[3].size = get_ram_size((long *)PHYS_SDRAM_4,
							PHYS_SDRAM_4_SIZE);

	return 0;
}

#ifdef CONFIG_DISPLAY_BOARDINFO
int checkboard(void)
{
	printf("\nBoard: SMDKV310\n");
	return 0;
}
#endif

#ifdef CONFIG_MMC
int board_mmc_init(struct bd_info *bis)
{
	int i, err;

	/*
	 * MMC2 SD card GPIO:
	 *
	 * GPK2[0]	SD_2_CLK(2)
	 * GPK2[1]	SD_2_CMD(2)
	 * GPK2[2]	SD_2_CDn
	 * GPK2[3:6]	SD_2_DATA[0:3](2)
	 */
	for (i = EXYNOS4_GPIO_K20; i < EXYNOS4_GPIO_K27; i++) {
		/* GPK2[0:6] special function 2 */
		gpio_cfg_pin(i, S5P_GPIO_FUNC(0x2));

		/* GPK2[0:6] drv 4x */
		gpio_set_drv(i, S5P_GPIO_DRV_4X);

		/* GPK2[0:1] pull disable */
		if (i == EXYNOS4_GPIO_K20 || i == EXYNOS4_GPIO_K21) {
			gpio_set_pull(i, S5P_GPIO_PULL_NONE);
			continue;
		}

		/* GPK2[2:6] pull up */
		gpio_set_pull(i, S5P_GPIO_PULL_UP);
	}
	err = s5p_mmc_init(2, 4);
	return err;
}
#endif

static int board_uart_init(void)
{
	int err;

	err = exynos_pinmux_config(PERIPH_ID_UART0, PINMUX_FLAG_NONE);
	if (err) {
		debug("UART0 not configured\n");
		return err;
	}

	err = exynos_pinmux_config(PERIPH_ID_UART1, PINMUX_FLAG_NONE);
	if (err) {
		debug("UART1 not configured\n");
		return err;
	}

	err = exynos_pinmux_config(PERIPH_ID_UART2, PINMUX_FLAG_NONE);
	if (err) {
		debug("UART2 not configured\n");
		return err;
	}

	err = exynos_pinmux_config(PERIPH_ID_UART3, PINMUX_FLAG_NONE);
	if (err) {
		debug("UART3 not configured\n");
		return err;
	}

	return 0;
}

#ifdef CONFIG_BOARD_EARLY_INIT_F
int board_early_init_f(void)
{
	int err;
	err = board_uart_init();
	if (err) {
		debug("UART init failed\n");
		return err;
	}
	return err;
}
#endif