src/drivers/intel/fsp2_0/hob_verify.c

   1 /* This file is part of the coreboot project. */
   2 /* SPDX-License-Identifier: GPL-2.0-or-later */
   3
   4 #include <cbmem.h>
   5 #include <console/console.h>
   6 #include <fsp/util.h>
   7
   8 void fsp_verify_memory_init_hobs(void)
   9 {
  10         struct range_entry fsp_mem;
  11         struct range_entry tolum;
  12
  13         /* Verify the size of the TOLUM range */
  14         fsp_find_bootloader_tolum(&tolum);
  15         if (range_entry_size(&tolum) < cbmem_overhead_size()) {
  16                 printk(BIOS_CRIT,
  17                         "FSP_BOOTLOADER_TOLUM_SIZE: 0x%08llx < 0x%08zx\n",
  18                         range_entry_size(&tolum), cbmem_overhead_size());
  19                 die("FSP_BOOTLOADER_TOLUM_HOB too small!\n");
  20         }
  21
  22         /* Verify the bootloader tolum is above the FSP reserved area */
  23         fsp_find_reserved_memory(&fsp_mem);
  24         if (range_entry_end(&tolum) <= range_entry_base(&fsp_mem)) {
  25                 printk(BIOS_CRIT,
  26                         "TOLUM end: 0x%08llx != 0x%08llx: FSP rsvd base\n",
  27                         range_entry_end(&tolum), range_entry_base(&fsp_mem));
  28                 die("FSP reserved region after BIOS TOLUM!\n");
  29         }
  30         if (range_entry_base(&tolum) < range_entry_end(&fsp_mem)) {
  31                 printk(BIOS_CRIT,
  32                         "TOLUM base: 0x%08llx < 0x%08llx: FSP rsvd end\n",
  33                         range_entry_base(&tolum), range_entry_end(&fsp_mem));
  34                 die("FSP reserved region overlaps BIOS TOLUM!\n");
  35         }
  36
  37         /* Verify that the FSP reserved area immediately follows the BIOS
  38          * reserved area
  39          */
  40         if (range_entry_base(&tolum) != range_entry_end(&fsp_mem)) {
  41                 printk(BIOS_CRIT,
  42                         "TOLUM base: 0x%08llx != 0x%08llx: FSP rsvd end\n",
  43                         range_entry_base(&tolum), range_entry_end(&fsp_mem));
  44                 die("Space between FSP reserved region and BIOS TOLUM!\n");
  45         }
  46
  47         if (range_entry_end(&tolum) != (uintptr_t)cbmem_top()) {
  48                 printk(BIOS_CRIT, "TOLUM end: 0x%08llx != %p: cbmem_top\n",
  49                         range_entry_end(&tolum), cbmem_top());
  50                 die("Space between cbmem_top and BIOS TOLUM!\n");
  51         }
  52 }