text: // SPDX-License-Identifier: GPL-2.0+
  /*
   * Copyright (C) 2015 Stefan Roese <sr@denx.de>
   */
  
  #include <common.h>
  #include <i2c.h>
  #include <asm/gpio.h>
  #include <linux/mbus.h>
  #include <linux/io.h>
  #include <asm/arch/cpu.h>
  #include <asm/arch/soc.h>
  
  DECLARE_GLOBAL_DATA_PTR;
  
  /*
   * These values and defines are taken from the Marvell U-Boot version
   * "u-boot-2013.01-2016_T1.0.eng_drop_v6"
   */
  #define DB_DX_AC3_GPP_OUT_ENA_LOW	(~(BIT(0) | BIT(2) | BIT(3) | BIT(4) \
  					| BIT(6) | BIT(12) | BIT(13) \
  					| BIT(16) | BIT(17) | BIT(20) \
  					| BIT(29)  | BIT(30)))
  #define DB_DX_AC3_GPP_OUT_ENA_MID	(~(0))
  #define DB_DX_AC3_GPP_OUT_VAL_LOW	(BIT(0) | BIT(2) | BIT(3) | BIT(4) \
  					| BIT(6) | BIT(12) | BIT(13) \
  					| BIT(16) | BIT(17) | BIT(20) \
  					| BIT(29)  | BIT(30))
  #define DB_DX_AC3_GPP_OUT_VAL_MID	0x0
  #define DB_DX_AC3_GPP_POL_LOW		0x0
  #define DB_DX_AC3_GPP_POL_MID		0x0
  
  int board_early_init_f(void)
  {
  	/* Configure MPP */
  	writel(0x00142222, MVEBU_MPP_BASE + 0x00);
  	writel(0x11122000, MVEBU_MPP_BASE + 0x04);
  	writel(0x44444004, MVEBU_MPP_BASE + 0x08);
  	writel(0x14444444, MVEBU_MPP_BASE + 0x0c);
  	writel(0x00000001, MVEBU_MPP_BASE + 0x10);
  
  	/*
  	 * MVEBU_GPIO0_BASE is the User LED
  	 * MVEBU_GPIO1_BASE is the Reset Button (currently not used)
  	 */
  
  	/* Set GPP Out value */
  	writel(DB_DX_AC3_GPP_OUT_VAL_LOW, MVEBU_GPIO0_BASE + 0x00);
  	/* writel(DB_DX_AC3_GPP_OUT_VAL_MID, MVEBU_GPIO1_BASE + 0x00); */
  
  	/* Set GPP Polarity */
  	writel(DB_DX_AC3_GPP_POL_LOW, MVEBU_GPIO0_BASE + 0x0c);
  	/* writel(DB_DX_AC3_GPP_POL_MID, MVEBU_GPIO1_BASE + 0x0c); */
  
  	/* Set GPP Out Enable */
  	writel(DB_DX_AC3_GPP_OUT_ENA_LOW, MVEBU_GPIO0_BASE + 0x04);
  	/* writel(DB_DX_AC3_GPP_OUT_ENA_MID, MVEBU_GPIO1_BASE + 0x04); */
  
  	return 0;
  }
  
  int board_init(void)
  {
  	/* address of boot parameters */
  	gd->bd->bi_boot_params = mvebu_sdram_bar(0) + 0x100;
  
  	return 0;
  }
  
  int checkboard(void)
  {
  	puts("Board: " CONFIG_SYS_BOARD "\n");
  
  	return 0;
  }
  