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 <debug_uart.h>
   8 #include <spl.h>
   9
  10 #include <asm/io.h>
  11 #include <asm/spl.h>
  12 #include <asm/arch/hardware.h>
  13 #include <asm/arch/sys_proto.h>
  14
  15 DECLARE_GLOBAL_DATA_PTR;
  16
  17 void board_init_f(ulong dummy)
  18 {
  19         ps7_init();
  20
  21         arch_cpu_init();
  22         /*
  23          * The debug UART can be used from this point:
  24          * debug_uart_init();
  25          * printch('x');
  26          */
  27 }
  28
  29 #ifdef CONFIG_SPL_BOARD_INIT
  30 void spl_board_init(void)
  31 {
  32         preloader_console_init();
  33         board_init();
  34 }
  35 #endif
  36
  37 u32 spl_boot_device(void)
  38 {
  39         u32 mode;
  40
  41         switch ((zynq_slcr_get_boot_mode()) & ZYNQ_BM_MASK) {
  42 #ifdef CONFIG_SPL_SPI_SUPPORT
  43         case ZYNQ_BM_QSPI:
  44                 puts("qspi boot\n");
  45                 mode = BOOT_DEVICE_SPI;
  46                 break;
  47 #endif
  48         case ZYNQ_BM_NAND:
  49                 mode = BOOT_DEVICE_NAND;
  50                 break;
  51         case ZYNQ_BM_NOR:
  52                 mode = BOOT_DEVICE_NOR;
  53                 break;
  54 #ifdef CONFIG_SPL_MMC_SUPPORT
  55         case ZYNQ_BM_SD:
  56                 puts("mmc boot\n");
  57                 mode = BOOT_DEVICE_MMC1;
  58                 break;
  59 #endif
  60         case ZYNQ_BM_JTAG:
  61                 mode = BOOT_DEVICE_RAM;
  62                 break;
  63         default:
  64                 puts("Unsupported boot mode selected\n");
  65                 hang();
  66         }
  67
  68         return mode;
  69 }
  70
  71 #ifdef CONFIG_SPL_MMC_SUPPORT
  72 u32 spl_boot_mode(const u32 boot_device)
  73 {
  74         return MMCSD_MODE_FS;
  75 }
  76 #endif
  77
  78 #ifdef CONFIG_SPL_OS_BOOT
  79 int spl_start_uboot(void)
  80 {
  81         /* boot linux */
  82         return 0;
  83 }
  84 #endif
  85
  86 __weak void ps7_init(void)
  87 {
  88         /*
  89          * This function is overridden by the one in
  90          * board/xilinx/zynq/(platform)/ps7_init_gpl.c, if it exists.
  91          */
  92 }
  93
  94 __weak int ps7_post_config(void)
  95 {
  96         /*
  97          * This function is overridden by the one in
  98          * board/xilinx/zynq/(platform)/ps7_init_gpl.c, if it exists.
  99          */
 100         return 0;
 101 }
 102
 103 void spl_board_prepare_for_boot(void)
 104 {
 105         ps7_post_config();
 106         debug("SPL bye\n");
 107 }
 108
 109 #ifdef CONFIG_SPL_LOAD_FIT
 110 int board_fit_config_name_match(const char *name)
 111 {
 112         /* Just empty function now - can't decide what to choose */
 113         debug("%s: %s\n", __func__, name);
 114
 115         return 0;
 116 }
 117 #endif