LXR uboot/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 <hang.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#if !defined(CONFIG_WDT_AT91)
  16void at91_disable_wdt(void)
  17{
  18        struct at91_wdt *wdt = (struct at91_wdt *)ATMEL_BASE_WDT;
  19
  20        writel(AT91_WDT_MR_WDDIS, &wdt->mr);
  21}
  22#endif
  23
  24#if defined(CONFIG_SAMA5D2) || defined(CONFIG_SAMA5D3) || \
  25    defined(CONFIG_SAMA5D4)
  26#include <asm/arch/sama5_boot.h>
  27struct {
  28        u32     r4;
  29} bootrom_stash __attribute__((section(".data")));
  30
  31u32 spl_boot_device(void)
  32{
  33        u32 dev = (bootrom_stash.r4 >> ATMEL_SAMA5_BOOT_FROM_OFF) &
  34                  ATMEL_SAMA5_BOOT_FROM_MASK;
  35        u32 off = (bootrom_stash.r4 >> ATMEL_SAMA5_BOOT_DEV_ID_OFF) &
  36                  ATMEL_SAMA5_BOOT_DEV_ID_MASK;
  37
  38#if defined(CONFIG_SYS_USE_MMC) || defined(CONFIG_SD_BOOT)
  39        if (dev == ATMEL_SAMA5_BOOT_FROM_MCI) {
  40#if defined(CONFIG_SPL_OF_CONTROL)
  41                return BOOT_DEVICE_MMC1;
  42#else
  43                if (off == 0)
  44                        return BOOT_DEVICE_MMC1;
  45                if (off == 1)
  46                        return BOOT_DEVICE_MMC2;
  47                printf("ERROR: MMC controller %i not present!\n", dev);
  48                hang();
  49#endif
  50        }
  51#endif
  52
  53#if defined(CONFIG_SYS_USE_SERIALFLASH) || \
  54        defined(CONFIG_SYS_USE_SPIFLASH) || \
  55        defined(CONFIG_SPI_BOOT)
  56        if (dev == ATMEL_SAMA5_BOOT_FROM_SPI)
  57                return BOOT_DEVICE_SPI;
  58#endif
  59        if (dev == ATMEL_SAMA5_BOOT_FROM_QSPI)
  60                return BOOT_DEVICE_SPI;
  61
  62        if (dev == ATMEL_SAMA5_BOOT_FROM_SMC)
  63                return BOOT_DEVICE_NAND;
  64
  65        if (dev == ATMEL_SAMA5_BOOT_FROM_SAMBA)
  66                return BOOT_DEVICE_USB;
  67
  68        printf("ERROR: SMC/TWI/QSPI boot device not supported!\n"
  69               "       Boot device %i, controller number %i\n", dev, off);
  70
  71        return BOOT_DEVICE_NONE;
  72}
  73#else
  74u32 spl_boot_device(void)
  75{
  76#if defined(CONFIG_SYS_USE_MMC) || defined(CONFIG_SD_BOOT)
  77        return BOOT_DEVICE_MMC1;
  78#elif defined(CONFIG_SYS_USE_NANDFLASH) || defined(CONFIG_NAND_BOOT)
  79        return BOOT_DEVICE_NAND;
  80#elif defined(CONFIG_SYS_USE_SERIALFLASH) || \
  81        defined(CONFIG_SYS_USE_SPIFLASH) || \
  82        defined(CONFIG_SPI_BOOT)
  83        return BOOT_DEVICE_SPI;
  84#endif
  85        return BOOT_DEVICE_NONE;
  86}
  87#endif
  88