u-boot/arch/arm/mach-at91/spl.c
Tom Rini f58e94602e at91: Minor tweaks to SPL logic for space savings on smartweb
- spl_board_init is empty on smartweb so drop that function
- When CONFIG_AT91SAM9_WATCHDOG is set we do not disable the watchdog in
  SPL and instead let full U-Boot handle it.  Instead of an empty
  function just do not call a function.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-22 22:08:57 -04:00

86 lines
2.1 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2013 Atmel Corporation
* Bo Shen <voice.shen@atmel.com>
*/
#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)
{
struct at91_wdt *wdt = (struct at91_wdt *)ATMEL_BASE_WDT;
writel(AT91_WDT_MR_WDDIS, &wdt->mr);
}
#endif
#if defined(CONFIG_SAMA5D2) || defined(CONFIG_SAMA5D3) || \
defined(CONFIG_SAMA5D4)
#include <asm/arch/sama5_boot.h>
struct {
u32 r4;
} bootrom_stash __attribute__((section(".data")));
u32 spl_boot_device(void)
{
u32 dev = (bootrom_stash.r4 >> ATMEL_SAMA5_BOOT_FROM_OFF) &
ATMEL_SAMA5_BOOT_FROM_MASK;
u32 off = (bootrom_stash.r4 >> ATMEL_SAMA5_BOOT_DEV_ID_OFF) &
ATMEL_SAMA5_BOOT_DEV_ID_MASK;
#if defined(CONFIG_SYS_USE_MMC) || defined(CONFIG_SD_BOOT)
if (dev == ATMEL_SAMA5_BOOT_FROM_MCI) {
#if defined(CONFIG_SPL_OF_CONTROL)
return BOOT_DEVICE_MMC1;
#else
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
}
#endif
#if defined(CONFIG_SYS_USE_SERIALFLASH) || \
defined(CONFIG_SYS_USE_SPIFLASH) || \
defined(CONFIG_SPI_BOOT)
if (dev == ATMEL_SAMA5_BOOT_FROM_SPI)
return BOOT_DEVICE_SPI;
#endif
if (dev == ATMEL_SAMA5_BOOT_FROM_QSPI)
return BOOT_DEVICE_SPI;
if (dev == ATMEL_SAMA5_BOOT_FROM_SMC)
return BOOT_DEVICE_NAND;
if (dev == ATMEL_SAMA5_BOOT_FROM_SAMBA)
return BOOT_DEVICE_USB;
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)
{
#if defined(CONFIG_SYS_USE_MMC) || defined(CONFIG_SD_BOOT)
return BOOT_DEVICE_MMC1;
#elif defined(CONFIG_SYS_USE_NANDFLASH) || defined(CONFIG_NAND_BOOT)
return BOOT_DEVICE_NAND;
#elif defined(CONFIG_SYS_USE_SERIALFLASH) || \
defined(CONFIG_SYS_USE_SPIFLASH) || \
defined(CONFIG_SPI_BOOT)
return BOOT_DEVICE_SPI;
#endif
return BOOT_DEVICE_NONE;
}
#endif