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) || defined(CONFIG_SAMA5D3) || \ 27 defined(CONFIG_SAMA5D4) 28 #include <asm/arch/sama5_boot.h> 29 struct { 30 u32 r4; 31 } bootrom_stash __attribute__((section(".data"))); 32 33 u32 spl_boot_device(void) 34 { 35 u32 dev = (bootrom_stash.r4 >> ATMEL_SAMA5_BOOT_FROM_OFF) & 36 ATMEL_SAMA5_BOOT_FROM_MASK; 37 u32 off = (bootrom_stash.r4 >> ATMEL_SAMA5_BOOT_DEV_ID_OFF) & 38 ATMEL_SAMA5_BOOT_DEV_ID_MASK; 39 40 #if defined(CONFIG_SYS_USE_MMC) 41 if (dev == ATMEL_SAMA5_BOOT_FROM_MCI) { 42 #if defined(CONFIG_SPL_OF_CONTROL) 43 return BOOT_DEVICE_MMC1; 44 #else 45 if (off == 0) 46 return BOOT_DEVICE_MMC1; 47 if (off == 1) 48 return BOOT_DEVICE_MMC2; 49 printf("ERROR: MMC controller %i not present!\n", dev); 50 hang(); 51 #endif 52 } 53 #endif 54 55 #if defined(CONFIG_SYS_USE_SERIALFLASH) || defined(CONFIG_SYS_USE_SPIFLASH) 56 if (dev == ATMEL_SAMA5_BOOT_FROM_SPI) 57 return BOOT_DEVICE_SPI; 58 #endif 59 60 if (dev == ATMEL_SAMA5_BOOT_FROM_SMC) 61 return BOOT_DEVICE_NAND; 62 63 if (dev == ATMEL_SAMA5_BOOT_FROM_SAMBA) 64 return BOOT_DEVICE_USB; 65 66 printf("ERROR: SMC/TWI/QSPI boot device not supported!\n" 67 " Boot device %i, controller number %i\n", dev, off); 68 69 return BOOT_DEVICE_NONE; 70 } 71 #else 72 u32 spl_boot_device(void) 73 { 74 #ifdef CONFIG_SYS_USE_MMC 75 return BOOT_DEVICE_MMC1; 76 #elif CONFIG_SYS_USE_NANDFLASH 77 return BOOT_DEVICE_NAND; 78 #elif CONFIG_SYS_USE_SERIALFLASH || CONFIG_SYS_USE_SPIFLASH 79 return BOOT_DEVICE_SPI; 80 #endif 81 return BOOT_DEVICE_NONE; 82 } 83 #endif 84 85 u32 spl_boot_mode(const u32 boot_device) 86 { 87 switch (boot_device) { 88 #ifdef CONFIG_SYS_USE_MMC 89 case BOOT_DEVICE_MMC1: 90 case BOOT_DEVICE_MMC2: 91 return MMCSD_MODE_FS; 92 break; 93 #endif 94 case BOOT_DEVICE_NONE: 95 default: 96 hang(); 97 } 98 } 99