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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * Copyright (C) 2014-2016 Stefan Roese <sr@denx.de>
- */
- #include <common.h>
- #include <dm.h>
- #include <debug_uart.h>
- #include <fdtdec.h>
- #include <hang.h>
- #include <init.h>
- #include <log.h>
- #include <spl.h>
- #include <asm/io.h>
- #include <asm/arch/cpu.h>
- #include <asm/arch/soc.h>
- 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();
- }
- }
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