arch/sandbox/cpu/spl.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (c) 2016 Google, Inc
   4  */
   5
   6 #include <common.h>
   7 #include <dm.h>
   8 #include <os.h>
   9 #include <spl.h>
  10 #include <asm/spl.h>
  11 #include <asm/state.h>
  12
  13 DECLARE_GLOBAL_DATA_PTR;
  14
  15 /* SPL / TPL init function */
  16 void board_init_f(ulong flag)
  17 {
  18         struct sandbox_state *state = state_get_current();
  19
  20         gd->arch.ram_buf = state->ram_buf;
  21         gd->ram_size = state->ram_size;
  22 }
  23
  24 u32 spl_boot_device(void)
  25 {
  26         return BOOT_DEVICE_BOARD;
  27 }
  28
  29 static int spl_board_load_image(struct spl_image_info *spl_image,
  30                                 struct spl_boot_device *bootdev)
  31 {
  32         char fname[256];
  33         int ret;
  34
  35         ret = os_find_u_boot(fname, sizeof(fname));
  36         if (ret) {
  37                 printf("(%s not found, error %d)\n", fname, ret);
  38                 return ret;
  39         }
  40
  41         /* Set up spl_image to boot from jump_to_image_no_args() */
  42         spl_image->arg = strdup(fname);
  43         if (!spl_image->arg)
  44                 return log_msg_ret("Setup exec filename", -ENOMEM);
  45
  46         return 0;
  47 }
  48 SPL_LOAD_IMAGE_METHOD("sandbox", 9, BOOT_DEVICE_BOARD, spl_board_load_image);
  49
  50 void spl_board_init(void)
  51 {
  52         struct sandbox_state *state = state_get_current();
  53         struct udevice *dev;
  54
  55         preloader_console_init();
  56         if (state->show_of_platdata) {
  57                 /*
  58                  * Scan all the devices so that we can output their platform
  59                  * data. See sandbox_spl_probe().
  60                  */
  61                 printf("Scanning misc devices\n");
  62                 for (uclass_first_device(UCLASS_MISC, &dev);
  63                      dev;
  64                      uclass_next_device(&dev))
  65                         ;
  66         }
  67 }
  68
  69 void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image)
  70 {
  71         const char *fname = spl_image->arg;
  72
  73         if (fname) {
  74                 os_fd_restore();
  75                 os_spl_to_uboot(fname);
  76         } else {
  77                 printf("No filename provided for U-Boot\n");
  78         }
  79         hang();
  80 }