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 <hang.h>
   9 #include <init.h>
  10 #include <log.h>
  11 #include <os.h>
  12 #include <spl.h>
  13 #include <asm/spl.h>
  14 #include <asm/state.h>
  15 #include <test/test.h>
  16
  17 DECLARE_GLOBAL_DATA_PTR;
  18
  19 /* SPL / TPL init function */
  20 void board_init_f(ulong flag)
  21 {
  22         struct sandbox_state *state = state_get_current();
  23
  24         gd->arch.ram_buf = state->ram_buf;
  25         gd->ram_size = state->ram_size;
  26 }
  27
  28 u32 spl_boot_device(void)
  29 {
  30         return BOOT_DEVICE_BOARD;
  31 }
  32
  33 static int spl_board_load_image(struct spl_image_info *spl_image,
  34                                 struct spl_boot_device *bootdev)
  35 {
  36         char fname[256];
  37         int ret;
  38
  39         ret = os_find_u_boot(fname, sizeof(fname));
  40         if (ret) {
  41                 printf("(%s not found, error %d)\n", fname, ret);
  42                 return ret;
  43         }
  44
  45         /* Set up spl_image to boot from jump_to_image_no_args() */
  46         spl_image->arg = strdup(fname);
  47         if (!spl_image->arg)
  48                 return log_msg_ret("Setup exec filename", -ENOMEM);
  49
  50         return 0;
  51 }
  52 SPL_LOAD_IMAGE_METHOD("sandbox", 9, BOOT_DEVICE_BOARD, spl_board_load_image);
  53
  54 void spl_board_init(void)
  55 {
  56         struct sandbox_state *state = state_get_current();
  57
  58         preloader_console_init();
  59
  60         if (state->run_unittests) {
  61                 int ret;
  62
  63                 ret = dm_test_main(state->select_unittests);
  64                 /* continue execution into U-Boot */
  65         }
  66 }
  67
  68 void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image)
  69 {
  70         const char *fname = spl_image->arg;
  71
  72         if (fname) {
  73                 os_fd_restore();
  74                 os_spl_to_uboot(fname);
  75         } else {
  76                 printf("No filename provided for U-Boot\n");
  77         }
  78         hang();
  79 }
  80
  81 int handoff_arch_save(struct spl_handoff *ho)
  82 {
  83         ho->arch.magic = TEST_HANDOFF_MAGIC;
  84
  85         return 0;
  86 }