arch/arm/cpu/at91-common/spl.c

   1 /*
   2  * Copyright (C) 2013 Atmel Corporation
   3  *                    Bo Shen <voice.shen@atmel.com>
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #include <common.h>
   9 #include <asm/io.h>
  10 #include <asm/arch/at91_common.h>
  11 #include <asm/arch/at91_wdt.h>
  12 #include <asm/arch/clk.h>
  13 #include <spl.h>
  14
  15 void at91_disable_wdt(void)
  16 {
  17         struct at91_wdt *wdt = (struct at91_wdt *)ATMEL_BASE_WDT;
  18
  19         writel(AT91_WDT_MR_WDDIS, &wdt->mr);
  20 }
  21
  22 u32 spl_boot_device(void)
  23 {
  24 #ifdef CONFIG_SYS_USE_MMC
  25         return BOOT_DEVICE_MMC1;
  26 #elif CONFIG_SYS_USE_NANDFLASH
  27         return BOOT_DEVICE_NAND;
  28 #elif CONFIG_SYS_USE_SERIALFLASH
  29         return BOOT_DEVICE_SPI;
  30 #endif
  31         return BOOT_DEVICE_NONE;
  32 }
  33
  34 u32 spl_boot_mode(void)
  35 {
  36         switch (spl_boot_device()) {
  37 #ifdef CONFIG_SYS_USE_MMC
  38         case BOOT_DEVICE_MMC1:
  39                 return MMCSD_MODE_FS;
  40                 break;
  41 #endif
  42         case BOOT_DEVICE_NONE:
  43         default:
  44                 hang();
  45         }
  46 }