arch/arm/mach-at91/spl.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (C) 2013 Atmel Corporation
   4  *                    Bo Shen <voice.shen@atmel.com>
   5  */
   6
   7 #include <common.h>
   8 #include <asm/io.h>
   9 #include <asm/arch/at91_common.h>
  10 #include <asm/arch/at91_wdt.h>
  11 #include <asm/arch/clk.h>
  12 #include <spl.h>
  13
  14 #if defined(CONFIG_AT91SAM9_WATCHDOG)
  15 void at91_disable_wdt(void) { }
  16 #else
  17 void at91_disable_wdt(void)
  18 {
  19         struct at91_wdt *wdt = (struct at91_wdt *)ATMEL_BASE_WDT;
  20
  21         writel(AT91_WDT_MR_WDDIS, &wdt->mr);
  22 }
  23 #endif
  24
  25 #if defined(CONFIG_SAMA5D2) || defined(CONFIG_SAMA5D3) || \
  26     defined(CONFIG_SAMA5D4)
  27 #include <asm/arch/sama5_boot.h>
  28 struct {
  29         u32     r4;
  30 } bootrom_stash __attribute__((section(".data")));
  31
  32 u32 spl_boot_device(void)
  33 {
  34         u32 dev = (bootrom_stash.r4 >> ATMEL_SAMA5_BOOT_FROM_OFF) &
  35                   ATMEL_SAMA5_BOOT_FROM_MASK;
  36         u32 off = (bootrom_stash.r4 >> ATMEL_SAMA5_BOOT_DEV_ID_OFF) &
  37                   ATMEL_SAMA5_BOOT_DEV_ID_MASK;
  38
  39 #if defined(CONFIG_SYS_USE_MMC) || defined(CONFIG_SD_BOOT)
  40         if (dev == ATMEL_SAMA5_BOOT_FROM_MCI) {
  41 #if defined(CONFIG_SPL_OF_CONTROL)
  42                 return BOOT_DEVICE_MMC1;
  43 #else
  44                 if (off == 0)
  45                         return BOOT_DEVICE_MMC1;
  46                 if (off == 1)
  47                         return BOOT_DEVICE_MMC2;
  48                 printf("ERROR: MMC controller %i not present!\n", dev);
  49                 hang();
  50 #endif
  51         }
  52 #endif
  53
  54 #if defined(CONFIG_SYS_USE_SERIALFLASH) || \
  55         defined(CONFIG_SYS_USE_SPIFLASH) || \
  56         defined(CONFIG_SPI_BOOT)
  57         if (dev == ATMEL_SAMA5_BOOT_FROM_SPI)
  58                 return BOOT_DEVICE_SPI;
  59 #endif
  60         if (dev == ATMEL_SAMA5_BOOT_FROM_QSPI)
  61                 return BOOT_DEVICE_SPI;
  62
  63         if (dev == ATMEL_SAMA5_BOOT_FROM_SMC)
  64                 return BOOT_DEVICE_NAND;
  65
  66         if (dev == ATMEL_SAMA5_BOOT_FROM_SAMBA)
  67                 return BOOT_DEVICE_USB;
  68
  69         printf("ERROR: SMC/TWI/QSPI boot device not supported!\n"
  70                "       Boot device %i, controller number %i\n", dev, off);
  71
  72         return BOOT_DEVICE_NONE;
  73 }
  74 #else
  75 u32 spl_boot_device(void)
  76 {
  77 #if defined(CONFIG_SYS_USE_MMC) || defined(CONFIG_SD_BOOT)
  78         return BOOT_DEVICE_MMC1;
  79 #elif defined(CONFIG_SYS_USE_NANDFLASH) || defined(CONFIG_NAND_BOOT)
  80         return BOOT_DEVICE_NAND;
  81 #elif defined(CONFIG_SYS_USE_SERIALFLASH) || \
  82         defined(CONFIG_SYS_USE_SPIFLASH) || \
  83         defined(CONFIG_SPI_BOOT)
  84         return BOOT_DEVICE_SPI;
  85 #endif
  86         return BOOT_DEVICE_NONE;
  87 }
  88 #endif