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 <asm/io.h> 9 #include <asm/arch/at91_common.h> 10 #include <asm/arch/at91_wdt.h> 11 #include <asm/arch/clk.h> 12 #include <spl.h> 13 14 #if !defined(CONFIG_AT91SAM9_WATCHDOG) 15 void at91_disable_wdt(void) 16 { 17 struct at91_wdt *wdt = (struct at91_wdt *)ATMEL_BASE_WDT; 18 19 writel(AT91_WDT_MR_WDDIS, &wdt->mr); 20 } 21 #endif 22 23 #if defined(CONFIG_SAMA5D2) || defined(CONFIG_SAMA5D3) || \ 24 defined(CONFIG_SAMA5D4) 25 #include <asm/arch/sama5_boot.h> 26 struct { 27 u32 r4; 28 } bootrom_stash __attribute__((section(".data"))); 29 30 u32 spl_boot_device(void) 31 { 32 u32 dev = (bootrom_stash.r4 >> ATMEL_SAMA5_BOOT_FROM_OFF) & 33 ATMEL_SAMA5_BOOT_FROM_MASK; 34 u32 off = (bootrom_stash.r4 >> ATMEL_SAMA5_BOOT_DEV_ID_OFF) & 35 ATMEL_SAMA5_BOOT_DEV_ID_MASK; 36 37 #if defined(CONFIG_SYS_USE_MMC) || defined(CONFIG_SD_BOOT) 38 if (dev == ATMEL_SAMA5_BOOT_FROM_MCI) { 39 #if defined(CONFIG_SPL_OF_CONTROL) 40 return BOOT_DEVICE_MMC1; 41 #else 42 if (off == 0) 43 return BOOT_DEVICE_MMC1; 44 if (off == 1) 45 return BOOT_DEVICE_MMC2; 46 printf("ERROR: MMC controller %i not present!\n", dev); 47 hang(); 48 #endif 49 } 50 #endif 51 52 #if defined(CONFIG_SYS_USE_SERIALFLASH) || \ 53 defined(CONFIG_SYS_USE_SPIFLASH) || \ 54 defined(CONFIG_SPI_BOOT) 55 if (dev == ATMEL_SAMA5_BOOT_FROM_SPI) 56 return BOOT_DEVICE_SPI; 57 #endif 58 if (dev == ATMEL_SAMA5_BOOT_FROM_QSPI) 59 return BOOT_DEVICE_SPI; 60 61 if (dev == ATMEL_SAMA5_BOOT_FROM_SMC) 62 return BOOT_DEVICE_NAND; 63 64 if (dev == ATMEL_SAMA5_BOOT_FROM_SAMBA) 65 return BOOT_DEVICE_USB; 66 67 printf("ERROR: SMC/TWI/QSPI boot device not supported!\n" 68 " Boot device %i, controller number %i\n", dev, off); 69 70 return BOOT_DEVICE_NONE; 71 } 72 #else 73 u32 spl_boot_device(void) 74 { 75 #if defined(CONFIG_SYS_USE_MMC) || defined(CONFIG_SD_BOOT) 76 return BOOT_DEVICE_MMC1; 77 #elif defined(CONFIG_SYS_USE_NANDFLASH) || defined(CONFIG_NAND_BOOT) 78 return BOOT_DEVICE_NAND; 79 #elif defined(CONFIG_SYS_USE_SERIALFLASH) || \ 80 defined(CONFIG_SYS_USE_SPIFLASH) || \ 81 defined(CONFIG_SPI_BOOT) 82 return BOOT_DEVICE_SPI; 83 #endif 84 return BOOT_DEVICE_NONE; 85 } 86 #endif 87