src/drivers/intel/fsp2_0/hob_verify.c

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