arch/arm/mach-mvebu/spl.c

   1 /*
   2  * Copyright (C) 2014 Stefan Roese <sr@denx.de>
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6
   7 #include <common.h>
   8 #include <spl.h>
   9 #include <asm/io.h>
  10 #include <asm/arch/cpu.h>
  11 #include <asm/arch/soc.h>
  12
  13 DECLARE_GLOBAL_DATA_PTR;
  14
  15 u32 spl_boot_device(void)
  16 {
  17 #if defined(CONFIG_SPL_SPI_FLASH_SUPPORT)
  18         return BOOT_DEVICE_SPI;
  19 #endif
  20 #if defined(CONFIG_SPL_MMC_SUPPORT)
  21         return BOOT_DEVICE_MMC1;
  22 #endif
  23 }
  24
  25 #ifdef CONFIG_SPL_MMC_SUPPORT
  26 u32 spl_boot_mode(void)
  27 {
  28         return MMCSD_MODE_RAW;
  29 }
  30 #endif
  31
  32 void board_init_f(ulong dummy)
  33 {
  34 #ifndef CONFIG_MVEBU_BOOTROM_UARTBOOT
  35         /*
  36          * Only call arch_cpu_init() when not returning to the
  37          * Marvell BootROM, which is done when booting via
  38          * the xmodem protocol (kwboot tool). Otherwise the
  39          * internal register will get remapped and the BootROM
  40          * can't continue to run correctly.
  41          */
  42
  43         /* Linux expects the internal registers to be at 0xf1000000 */
  44         arch_cpu_init();
  45 #endif
  46
  47         /*
  48          * Pin muxing needs to be done before UART output, since
  49          * on A38x the UART pins need some re-muxing for output
  50          * to work.
  51          */
  52         board_early_init_f();
  53
  54         preloader_console_init();
  55
  56         timer_init();
  57
  58         /* First init the serdes PHY's */
  59         serdes_phy_config();
  60
  61         /* Setup DDR */
  62         ddr3_init();
  63
  64 #ifdef CONFIG_MVEBU_BOOTROM_UARTBOOT
  65         /*
  66          * Return to the BootROM to continue the Marvell xmodem
  67          * UART boot protocol. As initiated by the kwboot tool.
  68          *
  69          * This can only be done by the BootROM and not by the
  70          * U-Boot SPL infrastructure, since the beginning of the
  71          * image is already read and interpreted by the BootROM.
  72          * SPL has no chance to receive this information. So we
  73          * need to return to the BootROM to enable this xmodem
  74          * UART download.
  75          */
  76         return_to_bootrom();
  77 #endif
  78 }