text: /*
   * Copyright (C) 2014 Panasonic Corporation
   *   Author: Masahiro Yamada <yamada.m@jp.panasonic.com>
   *
   * SPDX-License-Identifier:	GPL-2.0+
   */
  
  #include <common.h>
  #include <spl.h>
  #include <nand.h>
  #include <asm/io.h>
  #include <../drivers/mtd/nand/denali.h>
  
  static void nand_denali_wp_disable(void)
  {
  #ifdef CONFIG_NAND_DENALI
  	/*
  	 * Since the boot rom enables the write protection for NAND boot mode,
  	 * it must be disabled somewhere for "nand write", "nand erase", etc.
  	 * The workaround is here to not disturb the Denali NAND controller
  	 * driver just for a really SoC-specific thing.
  	 */
  	void __iomem *denali_reg = (void __iomem *)CONFIG_SYS_NAND_REGS_BASE;
  
  	writel(WRITE_PROTECT__FLAG, denali_reg + WRITE_PROTECT);
  #endif
  }
  
  int board_late_init(void)
  {
  	puts("MODE:  ");
  
  	switch (spl_boot_device()) {
  	case BOOT_DEVICE_MMC1:
  		printf("eMMC Boot\n");
  		setenv("bootmode", "emmcboot");
  		break;
  	case BOOT_DEVICE_NAND:
  		printf("NAND Boot\n");
  		setenv("bootmode", "nandboot");
  		nand_denali_wp_disable();
  		break;
  	case BOOT_DEVICE_NOR:
  		printf("NOR Boot\n");
  		setenv("bootmode", "norboot");
  		break;
  	default:
  		printf("Unsupported Boot Mode\n");
  		return -1;
  	}
  
  	return 0;
  }
  