void fsp_verify_memory_init_hobs(void) { struct range_entry fsp_mem; struct range_entry tolum; /* Lookup the FSP_BOOTLOADER_TOLUM_HOB */ if (fsp_find_bootloader_tolum(&tolum)) die("9.3: FSP_BOOTLOADER_TOLUM_HOB missing!\n"); if (range_entry_size(&tolum) < cbmem_overhead_size()) { printk(BIOS_CRIT, "FSP_BOOTLOADER_TOLUM_SIZE: 0x%08llx < 0x%08zx\n", range_entry_size(&tolum), cbmem_overhead_size()); die("FSP_BOOTLOADER_TOLUM_HOB too small!\n"); } /* Locate the FSP reserved memory area */ if (fsp_find_reserved_memory(&fsp_mem)) die("9.1: FSP_RESERVED_MEMORY_RESOURCE_HOB missing!\n"); /* Verify the the bootloader tolum is above the FSP reserved area */ if (range_entry_end(&tolum) <= range_entry_base(&fsp_mem)) { printk(BIOS_CRIT, "TOLUM end: 0x%08llx != 0x%08llx: FSP rsvd base\n", range_entry_end(&tolum), range_entry_base(&fsp_mem)); die("FSP reserved region after BIOS TOLUM!\n"); } if (range_entry_base(&tolum) < range_entry_end(&fsp_mem)) { printk(BIOS_CRIT, "TOLUM base: 0x%08llx < 0x%08llx: FSP rsvd end\n", range_entry_base(&tolum), range_entry_end(&fsp_mem)); die("FSP reserved region overlaps BIOS TOLUM!\n"); } /* Verify that the FSP reserved area immediately follows the BIOS * reserved area */ if (range_entry_base(&tolum) != range_entry_end(&fsp_mem)) { printk(BIOS_CRIT, "TOLUM base: 0x%08llx != 0x%08llx: FSP rsvd end\n", range_entry_base(&tolum), range_entry_end(&fsp_mem)); die("Space between FSP reserved region and BIOS TOLUM!\n"); } if (range_entry_end(&tolum) != (uintptr_t)cbmem_top()) { printk(BIOS_CRIT, "TOLUM end: 0x%08llx != 0x%p: cbmem_top\n", range_entry_end(&tolum), cbmem_top()); die("Space between cbmem_top and BIOS TOLUM!\n"); } }
static enum cb_err check_region_overlap(const struct memranges *ranges, const char *description, uintptr_t begin, uintptr_t end) { const struct range_entry *r; memranges_each_entry(r, ranges) { if (end <= range_entry_base(r)) continue; if (begin >= range_entry_end(r)) continue; printk(BIOS_CRIT, "'%s' overlaps currently running program: " "[%p, %p)\n", description, (void *)begin, (void *)end); return CB_ERR; } return CB_SUCCESS; }