diff options
Diffstat (limited to 'src/drivers/intel/fsp2_0/hob_verify.c')
| -rw-r--r-- | src/drivers/intel/fsp2_0/hob_verify.c | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/src/drivers/intel/fsp2_0/hob_verify.c b/src/drivers/intel/fsp2_0/hob_verify.c new file mode 100644 index 0000000000..358db159d9 --- /dev/null +++ b/src/drivers/intel/fsp2_0/hob_verify.c @@ -0,0 +1,69 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2016 Intel Corp. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#include <cbmem.h> +#include <console/console.h> +#include <fsp/util.h> + +int fsp_find_bootloader_tolum(struct range_entry *re) +{ + return fsp_find_range_hob(re, fsp_bootloader_tolum_guid); +} + +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%08lx\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"); + } +} |