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 #if defined(CONFIG_AT91SAM9_WATCHDOG) 16 void at91_disable_wdt(void) { } 17 #else 18 void at91_disable_wdt(void) 19 { 20 struct at91_wdt *wdt = (struct at91_wdt *)ATMEL_BASE_WDT; 21 22 writel(AT91_WDT_MR_WDDIS, &wdt->mr); 23 } 24 #endif 25 26 #if defined(CONFIG_SAMA5D2) 27 struct { 28 u32 r4; 29 } bootrom_stash __attribute__((section(".data"))); 30 31 u32 spl_boot_device(void) 32 { 33 u32 dev = (bootrom_stash.r4 >> ATMEL_SAMA5D2_BOOT_FROM_OFF) & 34 ATMEL_SAMA5D2_BOOT_FROM_MASK; 35 u32 off = (bootrom_stash.r4 >> ATMEL_SAMA5D2_BOOT_DEV_ID_OFF) & 36 ATMEL_SAMA5D2_BOOT_DEV_ID_MASK; 37 38 #if defined(CONFIG_SYS_USE_MMC) 39 if (dev == ATMEL_SAMA5D2_BOOT_FROM_MCI) { 40 if (off == 0) 41 return BOOT_DEVICE_MMC1; 42 if (off == 1) 43 return BOOT_DEVICE_MMC2; 44 printf("ERROR: MMC controller %i not present!\n", dev); 45 hang(); 46 } 47 #endif 48 49 #if defined(CONFIG_SYS_USE_SERIALFLASH) || defined(CONFIG_SYS_USE_SPIFLASH) 50 if (dev == ATMEL_SAMA5D2_BOOT_FROM_SPI) 51 return BOOT_DEVICE_SPI; 52 #endif 53 54 printf("ERROR: SMC/TWI/QSPI boot device not supported!\n" 55 " Boot device %i, controller number %i\n", dev, off); 56 57 return BOOT_DEVICE_NONE; 58 } 59 #else 60 u32 spl_boot_device(void) 61 { 62 #ifdef CONFIG_SYS_USE_MMC 63 return BOOT_DEVICE_MMC1; 64 #elif CONFIG_SYS_USE_NANDFLASH 65 return BOOT_DEVICE_NAND; 66 #elif CONFIG_SYS_USE_SERIALFLASH || CONFIG_SYS_USE_SPIFLASH 67 return BOOT_DEVICE_SPI; 68 #endif 69 return BOOT_DEVICE_NONE; 70 } 71 #endif 72 73 u32 spl_boot_mode(void) 74 { 75 switch (spl_boot_device()) { 76 #ifdef CONFIG_SYS_USE_MMC 77 case BOOT_DEVICE_MMC1: 78 case BOOT_DEVICE_MMC2: 79 return MMCSD_MODE_FS; 80 break; 81 #endif 82 case BOOT_DEVICE_NONE: 83 default: 84 hang(); 85 } 86 } 87