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/*
* Copyright (C) 2013 Atmel Corporation
* Bo Shen <voice.shen@atmel.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/io.h>
#include <asm/arch/at91_common.h>
#include <asm/arch/at91_wdt.h>
#include <asm/arch/clk.h>
#include <spl.h>
#if defined(CONFIG_AT91SAM9_WATCHDOG)
void at91_disable_wdt(void) { }
#else
void at91_disable_wdt(void)
{
struct at91_wdt *wdt = (struct at91_wdt *)ATMEL_BASE_WDT;
writel(AT91_WDT_MR_WDDIS, &wdt->mr);
}
#endif
#if defined(CONFIG_SAMA5D2)
struct {
u32 r4;
} bootrom_stash __attribute__((section(".data")));
u32 spl_boot_device(void)
{
u32 dev = (bootrom_stash.r4 >> ATMEL_SAMA5D2_BOOT_FROM_OFF) &
ATMEL_SAMA5D2_BOOT_FROM_MASK;
u32 off = (bootrom_stash.r4 >> ATMEL_SAMA5D2_BOOT_DEV_ID_OFF) &
ATMEL_SAMA5D2_BOOT_DEV_ID_MASK;
#if defined(CONFIG_SYS_USE_MMC)
if (dev == ATMEL_SAMA5D2_BOOT_FROM_MCI) {
if (off == 0)
return BOOT_DEVICE_MMC1;
if (off == 1)
return BOOT_DEVICE_MMC2;
printf("ERROR: MMC controller %i not present!\n", dev);
hang();
}
#endif
#if defined(CONFIG_SYS_USE_SERIALFLASH) || defined(CONFIG_SYS_USE_SPIFLASH)
if (dev == ATMEL_SAMA5D2_BOOT_FROM_SPI)
return BOOT_DEVICE_SPI;
#endif
printf("ERROR: SMC/TWI/QSPI boot device not supported!\n"
" Boot device %i, controller number %i\n", dev, off);
return BOOT_DEVICE_NONE;
}
#else
u32 spl_boot_device(void)
{
#ifdef CONFIG_SYS_USE_MMC
return BOOT_DEVICE_MMC1;
#elif CONFIG_SYS_USE_NANDFLASH
return BOOT_DEVICE_NAND;
#elif CONFIG_SYS_USE_SERIALFLASH || CONFIG_SYS_USE_SPIFLASH
return BOOT_DEVICE_SPI;
#endif
return BOOT_DEVICE_NONE;
}
#endif
u32 spl_boot_mode(void)
{
switch (spl_boot_device()) {
#ifdef CONFIG_SYS_USE_MMC
case BOOT_DEVICE_MMC1:
case BOOT_DEVICE_MMC2:
return MMCSD_MODE_FS;
break;
#endif
case BOOT_DEVICE_NONE:
default:
hang();
}
}
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