// SPDX-License-Identifier: GPL-2.0+ /* * Copyright (C) 2014-2016 Stefan Roese */ #include #include #include #include #include #include #include #include #include #include #include static u32 get_boot_device(void) { u32 val; u32 boot_device; /* * First check, if UART boot-mode is active. This can only * be done, via the bootrom error register. Here the * MSB marks if the UART mode is active. */ val = readl(CONFIG_BOOTROM_ERR_REG); boot_device = (val & BOOTROM_ERR_MODE_MASK) >> BOOTROM_ERR_MODE_OFFS; debug("BOOTROM_REG=0x%08x boot_device=0x%x\n", val, boot_device); if (boot_device == BOOTROM_ERR_MODE_UART) return BOOT_DEVICE_UART; #ifdef CONFIG_ARMADA_38X /* * If the bootrom error code contains any other than zeros it's an * error condition and the bootROM has fallen back to UART boot */ boot_device = (val & BOOTROM_ERR_CODE_MASK) >> BOOTROM_ERR_CODE_OFFS; if (boot_device) return BOOT_DEVICE_UART; #endif /* * Now check the SAR register for the strapped boot-device */ val = readl(CONFIG_SAR_REG); /* SAR - Sample At Reset */ boot_device = (val & BOOT_DEV_SEL_MASK) >> BOOT_DEV_SEL_OFFS; debug("SAR_REG=0x%08x boot_device=0x%x\n", val, boot_device); switch (boot_device) { #if defined(CONFIG_ARMADA_38X) case BOOT_FROM_NAND: return BOOT_DEVICE_NAND; #endif #ifdef CONFIG_SPL_MMC_SUPPORT case BOOT_FROM_MMC: case BOOT_FROM_MMC_ALT: return BOOT_DEVICE_MMC1; #endif case BOOT_FROM_UART: #ifdef BOOT_FROM_UART_ALT case BOOT_FROM_UART_ALT: #endif return BOOT_DEVICE_UART; #ifdef BOOT_FROM_SATA case BOOT_FROM_SATA: case BOOT_FROM_SATA_ALT: return BOOT_DEVICE_SATA; #endif case BOOT_FROM_SPI: default: return BOOT_DEVICE_SPI; }; } u32 spl_boot_device(void) { return get_boot_device(); } void board_init_f(ulong dummy) { int ret; /* * Pin muxing needs to be done before UART output, since * on A38x the UART pins need some re-muxing for output * to work. */ board_early_init_f(); /* Example code showing how to enable the debug UART on MVEBU */ #ifdef EARLY_UART /* * Debug UART can be used from here if required: * * debug_uart_init(); * printch('a'); * printhex8(0x1234); * printascii("string"); */ #endif /* * Use special translation offset for SPL. This needs to be * configured *before* spl_init() is called as this function * calls dm_init() which calls the bind functions of the * device drivers. Here the base address needs to be configured * (translated) correctly. */ gd->translation_offset = 0xd0000000 - 0xf1000000; ret = spl_init(); if (ret) { debug("spl_init() failed: %d\n", ret); hang(); } preloader_console_init(); timer_init(); /* Armada 375 does not support SerDes and DDR3 init yet */ #if !defined(CONFIG_ARMADA_375) /* First init the serdes PHY's */ serdes_phy_config(); /* Setup DDR */ ddr3_init(); #endif /* Initialize Auto Voltage Scaling */ mv_avs_init(); /* Update read timing control for PCIe */ mv_rtc_config(); /* * Return to the BootROM to continue the Marvell xmodem * UART boot protocol. As initiated by the kwboot tool. * * This can only be done by the BootROM and not by the * U-Boot SPL infrastructure, since the beginning of the * image is already read and interpreted by the BootROM. * SPL has no chance to receive this information. So we * need to return to the BootROM to enable this xmodem * UART download. * * If booting from NAND lets let the BootROM load the * rest of the bootloader. */ switch (get_boot_device()) { case BOOT_DEVICE_UART: #if defined(CONFIG_ARMADA_38X) case BOOT_DEVICE_NAND: #endif return_to_bootrom(); } }