arch/arm/mach-zynq/spl.c

   1 /*
   2  * (C) Copyright 2014 Xilinx, Inc. Michal Simek
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6 #include <common.h>
   7 #include <spl.h>
   8
   9 #include <asm/io.h>
  10 #include <asm/arch/hardware.h>
  11 #include <asm/spl.h>
  12 #include <asm/arch/sys_proto.h>
  13
  14 DECLARE_GLOBAL_DATA_PTR;
  15
  16 void board_init_f(ulong dummy)
  17 {
  18         ps7_init();
  19
  20         /* Clear the BSS. */
  21         memset(__bss_start, 0, __bss_end - __bss_start);
  22
  23         preloader_console_init();
  24         arch_cpu_init();
  25         board_init_r(NULL, 0);
  26 }
  27
  28 #ifdef CONFIG_SPL_BOARD_INIT
  29 void spl_board_init(void)
  30 {
  31         board_init();
  32 }
  33 #endif
  34
  35 u32 spl_boot_device(void)
  36 {
  37         u32 mode;
  38
  39         switch ((zynq_slcr_get_boot_mode()) & ZYNQ_BM_MASK) {
  40 #ifdef CONFIG_SPL_SPI_SUPPORT
  41         case ZYNQ_BM_QSPI:
  42                 puts("qspi boot\n");
  43                 mode = BOOT_DEVICE_SPI;
  44                 break;
  45 #endif
  46         case ZYNQ_BM_NAND:
  47                 mode = BOOT_DEVICE_NAND;
  48                 break;
  49         case ZYNQ_BM_NOR:
  50                 mode = BOOT_DEVICE_NOR;
  51                 break;
  52 #ifdef CONFIG_SPL_MMC_SUPPORT
  53         case ZYNQ_BM_SD:
  54                 puts("mmc boot\n");
  55                 mode = BOOT_DEVICE_MMC1;
  56                 break;
  57 #endif
  58         case ZYNQ_BM_JTAG:
  59                 mode = BOOT_DEVICE_RAM;
  60                 break;
  61         default:
  62                 puts("Unsupported boot mode selected\n");
  63                 hang();
  64         }
  65
  66         return mode;
  67 }
  68
  69 #ifdef CONFIG_SPL_MMC_SUPPORT
  70 u32 spl_boot_mode(void)
  71 {
  72         return MMCSD_MODE_FS;
  73 }
  74 #endif
  75
  76 #ifdef CONFIG_SPL_OS_BOOT
  77 int spl_start_uboot(void)
  78 {
  79         /* boot linux */
  80         return 0;
  81 }
  82 #endif
  83
  84 __weak void ps7_init(void)
  85 {
  86         /*
  87          * This function is overridden by the one in
  88          * board/xilinx/zynq/ps7_init_gpl.c, if it exists.
  89          */
  90 }