78 static int validate_gpt_header(gpt_header *gpt_h, lbaint_t lba,  in validate_gpt_header()  argument
85 	if (le64_to_cpu(gpt_h->signature) != GPT_HEADER_SIGNATURE_UBOOT) {  in validate_gpt_header()
88 		       le64_to_cpu(gpt_h->signature),  in validate_gpt_header()
94 	memcpy(&crc32_backup, &gpt_h->header_crc32, sizeof(crc32_backup));  in validate_gpt_header()
95 	memset(&gpt_h->header_crc32, 0, sizeof(gpt_h->header_crc32));  in validate_gpt_header()
97 	calc_crc32 = efi_crc32((const unsigned char *)gpt_h,  in validate_gpt_header()
98 		le32_to_cpu(gpt_h->header_size));  in validate_gpt_header()
100 	memcpy(&gpt_h->header_crc32, &crc32_backup, sizeof(crc32_backup));  in validate_gpt_header()
112 	if (le64_to_cpu(gpt_h->my_lba) != lba) {  in validate_gpt_header()
114 		       le64_to_cpu(gpt_h->my_lba),  in validate_gpt_header()
123 	if (le64_to_cpu(gpt_h->first_usable_lba) > lastlba) {  in validate_gpt_header()
125 		       le64_to_cpu(gpt_h->first_usable_lba), lastlba);  in validate_gpt_header()
128 	if (le64_to_cpu(gpt_h->last_usable_lba) > lastlba) {  in validate_gpt_header()
130 		       le64_to_cpu(gpt_h->last_usable_lba), lastlba);  in validate_gpt_header()
135 	      LBAF "\n", le64_to_cpu(gpt_h->first_usable_lba),  in validate_gpt_header()
136 	      le64_to_cpu(gpt_h->last_usable_lba), lastlba);  in validate_gpt_header()
141 static int validate_gpt_entries(gpt_header *gpt_h, gpt_entry *gpt_e)  in validate_gpt_entries()  argument
147 		le32_to_cpu(gpt_h->num_partition_entries) *  in validate_gpt_entries()
148 		le32_to_cpu(gpt_h->sizeof_partition_entry));  in validate_gpt_entries()
150 	if (calc_crc32 != le32_to_cpu(gpt_h->partition_entry_array_crc32)) {  in validate_gpt_entries()
153 		       le32_to_cpu(gpt_h->partition_entry_array_crc32),  in validate_gpt_entries()
161 static void prepare_backup_gpt_header(gpt_header *gpt_h)  in prepare_backup_gpt_header()  argument
167 	val = le64_to_cpu(gpt_h->my_lba);  in prepare_backup_gpt_header()
168 	gpt_h->my_lba = gpt_h->alternate_lba;  in prepare_backup_gpt_header()
169 	gpt_h->alternate_lba = cpu_to_le64(val);  in prepare_backup_gpt_header()
170 	gpt_h->partition_entry_lba =  in prepare_backup_gpt_header()
171 			cpu_to_le64(le64_to_cpu(gpt_h->last_usable_lba) + 1);  in prepare_backup_gpt_header()
172 	gpt_h->header_crc32 = 0;  in prepare_backup_gpt_header()
174 	calc_crc32 = efi_crc32((const unsigned char *)gpt_h,  in prepare_backup_gpt_header()
175 			       le32_to_cpu(gpt_h->header_size));  in prepare_backup_gpt_header()
176 	gpt_h->header_crc32 = cpu_to_le32(calc_crc32);  in prepare_backup_gpt_header()
389 		gpt_header *gpt_h, gpt_entry *gpt_e)  in write_gpt_table()  argument
391 	const int pte_blk_cnt = BLOCK_CNT((gpt_h->num_partition_entries  in write_gpt_table()
402 			      le32_to_cpu(gpt_h->num_partition_entries) *  in write_gpt_table()
403 			      le32_to_cpu(gpt_h->sizeof_partition_entry));  in write_gpt_table()
404 	gpt_h->partition_entry_array_crc32 = cpu_to_le32(calc_crc32);  in write_gpt_table()
406 	calc_crc32 = efi_crc32((const unsigned char *)gpt_h,  in write_gpt_table()
407 			      le32_to_cpu(gpt_h->header_size));  in write_gpt_table()
408 	gpt_h->header_crc32 = cpu_to_le32(calc_crc32);  in write_gpt_table()
411 	if (blk_dwrite(dev_desc, 1, 1, gpt_h) != 1)  in write_gpt_table()
414 	if (blk_dwrite(dev_desc, le64_to_cpu(gpt_h->partition_entry_lba),  in write_gpt_table()
418 	prepare_backup_gpt_header(gpt_h);  in write_gpt_table()
420 	if (blk_dwrite(dev_desc, (lbaint_t)le64_to_cpu(gpt_h->last_usable_lba)  in write_gpt_table()
424 	if (blk_dwrite(dev_desc, (lbaint_t)le64_to_cpu(gpt_h->my_lba), 1,  in write_gpt_table()
425 		       gpt_h) != 1)  in write_gpt_table()
437 		 gpt_header *gpt_h, gpt_entry *gpt_e,  in gpt_fill_pte()  argument
440 	lbaint_t offset = (lbaint_t)le64_to_cpu(gpt_h->first_usable_lba);  in gpt_fill_pte()
442 			le64_to_cpu(gpt_h->last_usable_lba);  in gpt_fill_pte()
453 	size_t hdr_start = gpt_h->my_lba;  in gpt_fill_pte()
456 	size_t pte_start = gpt_h->partition_entry_lba;  in gpt_fill_pte()
458 		gpt_h->num_partition_entries * gpt_h->sizeof_partition_entry /  in gpt_fill_pte()
492 			gpt_e[i].ending_lba = gpt_h->last_usable_lba;  in gpt_fill_pte()
603 int gpt_fill_header(struct blk_desc *dev_desc, gpt_header *gpt_h,  in gpt_fill_header()  argument
606 	gpt_h->signature = cpu_to_le64(GPT_HEADER_SIGNATURE_UBOOT);  in gpt_fill_header()
607 	gpt_h->revision = cpu_to_le32(GPT_HEADER_REVISION_V1);  in gpt_fill_header()
608 	gpt_h->header_size = cpu_to_le32(sizeof(gpt_header));  in gpt_fill_header()
609 	gpt_h->my_lba = cpu_to_le64(1);  in gpt_fill_header()
610 	gpt_h->alternate_lba = cpu_to_le64(dev_desc->lba - 1);  in gpt_fill_header()
611 	gpt_h->last_usable_lba = cpu_to_le64(dev_desc->lba - 34);  in gpt_fill_header()
612 	gpt_h->partition_entry_lba =  in gpt_fill_header()
614 	gpt_h->first_usable_lba =  in gpt_fill_header()
615 		cpu_to_le64(le64_to_cpu(gpt_h->partition_entry_lba) + 32);  in gpt_fill_header()
616 	gpt_h->num_partition_entries = cpu_to_le32(GPT_ENTRY_NUMBERS);  in gpt_fill_header()
617 	gpt_h->sizeof_partition_entry = cpu_to_le32(sizeof(gpt_entry));  in gpt_fill_header()
618 	gpt_h->header_crc32 = 0;  in gpt_fill_header()
619 	gpt_h->partition_entry_array_crc32 = 0;  in gpt_fill_header()
621 	if (uuid_str_to_bin(str_guid, gpt_h->disk_guid.b, UUID_STR_FORMAT_GUID))  in gpt_fill_header()
630 	gpt_header *gpt_h;  in gpt_restore()  local
635 	gpt_h = malloc_cache_aligned(size);  in gpt_restore()
636 	if (gpt_h == NULL) {  in gpt_restore()
640 	memset(gpt_h, 0, size);  in gpt_restore()
647 		free(gpt_h);  in gpt_restore()
653 	ret = gpt_fill_header(dev_desc, gpt_h, str_disk_guid, parts_count);  in gpt_restore()
658 	ret = gpt_fill_pte(dev_desc, gpt_h, gpt_e, partitions, parts_count);  in gpt_restore()
663 	ret = write_gpt_table(dev_desc, gpt_h, gpt_e);  in gpt_restore()
667 	free(gpt_h);  in gpt_restore()
789 	gpt_header *gpt_h;  in is_valid_gpt_buf()  local
793 	gpt_h = buf + (GPT_PRIMARY_PARTITION_TABLE_LBA *  in is_valid_gpt_buf()
795 	if (validate_gpt_header(gpt_h, GPT_PRIMARY_PARTITION_TABLE_LBA,  in is_valid_gpt_buf()
800 	gpt_e = buf + (le64_to_cpu(gpt_h->partition_entry_lba) *  in is_valid_gpt_buf()
802 	if (validate_gpt_entries(gpt_h, gpt_e))  in is_valid_gpt_buf()
810 	gpt_header *gpt_h;  in write_mbr_and_gpt_partitions()  local
820 	gpt_h = buf + (GPT_PRIMARY_PARTITION_TABLE_LBA *  in write_mbr_and_gpt_partitions()
824 	gpt_e = buf + (le64_to_cpu(gpt_h->partition_entry_lba) *  in write_mbr_and_gpt_partitions()
826 	gpt_e_blk_cnt = BLOCK_CNT((le32_to_cpu(gpt_h->num_partition_entries) *  in write_mbr_and_gpt_partitions()
827 				   le32_to_cpu(gpt_h->sizeof_partition_entry)),  in write_mbr_and_gpt_partitions()
842 	if (blk_dwrite(dev_desc, lba, cnt, gpt_h) != cnt) {  in write_mbr_and_gpt_partitions()
848 	lba = le64_to_cpu(gpt_h->partition_entry_lba);  in write_mbr_and_gpt_partitions()
856 	prepare_backup_gpt_header(gpt_h);  in write_mbr_and_gpt_partitions()
859 	lba = le64_to_cpu(gpt_h->partition_entry_lba);  in write_mbr_and_gpt_partitions()
867 	lba = le64_to_cpu(gpt_h->my_lba);  in write_mbr_and_gpt_partitions()
869 	if (blk_dwrite(dev_desc, lba, cnt, gpt_h) != cnt) {  in write_mbr_and_gpt_partitions()