powerpc/kernel/nvram_64.c

180 int nvram_write_os_partition(struct nvram_os_partition *part,
189 	if (part->index == -1)
192 	if (length > part->size)
193 		length = part->size;
198 	tmp_index = part->index;
219 int nvram_read_partition(struct nvram_os_partition *part, char *buff,
227 	if (part->index == -1)
230 	if (length > part->size)
231 		length = part->size;
233 	tmp_index = part->index;
235 	if (part->os_partition) {
249 	if (part->os_partition) {
274 int __init nvram_init_os_partition(struct nvram_os_partition *part)
280 	p = nvram_find_partition(part->name, NVRAM_SIG_OS, &size);
283 	if (p && size < part->min_size) {
285 					" removing it...\n", part->name);
286 		nvram_remove_partition(part->name, NVRAM_SIG_OS, NULL);
292 		p = nvram_create_partition(part->name, NVRAM_SIG_OS,
293 					part->req_size, part->min_size);
297 				part->name);
300 			p = nvram_create_partition(part->name, NVRAM_SIG_OS,
301 					part->req_size, part->min_size);
307 		       " partition, err %d\n", part->name, (int)p);
311 	part->index = p;
312 	part->size = nvram_get_partition_size(p) - sizeof(struct err_log_info);
391 	/* part 1 has the recent messages from printk buffer */
392 	if (record->part > 1 || (record->type != PSTORE_TYPE_DMESG))
412 	record->id = record->part;
425 	struct nvram_os_partition *part = NULL;
434 		part = &oops_log_partition;
439 		part = &common_partition;
447 		part = &rtas_log_partition;
454 		part = &of_config_partition;
464 		part = &skiboot_partition;
475 	if (!part->os_partition) {
476 		p = nvram_find_partition(part->name, sig, &size);
479 				"err %d\n", part->name, (int)p);
482 		part->index = p;
483 		part->size = size;
486 	buff = kmalloc(part->size, GFP_KERNEL);
491 	if (nvram_read_partition(part, buff, part->size, &err_type, &id_no)) {
498 	if (part->os_partition)
531 	return part->size;
724 static int __init nvram_write_header(struct nvram_partition * part)
730 	memcpy(&phead, &part->header, NVRAM_HEADER_LEN);
733 	tmp_index = part->index;
758 static int __init nvram_can_remove_partition(struct nvram_partition *part,
761 	if (part->header.signature != sig)
764 		if (strncmp(name, part->header.name, 12))
769 			if (!strncmp(*except, part->header.name, 12))
788 	struct nvram_partition *part, *prev, *tmp;
791 	list_for_each_entry(part, &nvram_partitions, partition) {
792 		if (!nvram_can_remove_partition(part, name, sig, exceptions))
796 		part->header.signature = NVRAM_SIG_FREE;
797 		memset(part->header.name, 'w', 12);
798 		part->header.checksum = nvram_checksum(&part->header);
799 		rc = nvram_write_header(part);
808 	list_for_each_entry_safe(part, tmp, &nvram_partitions, partition) {
809 		if (part->header.signature != NVRAM_SIG_FREE) {
814 			prev->header.length += part->header.length;
821 			list_del(&part->partition);
822 			kfree(part);
824 			prev = part;
846 	struct nvram_partition *part;
874 	list_for_each_entry(part, &nvram_partitions, partition) {
875 		if (part->header.signature != NVRAM_SIG_FREE)
878 		if (part->header.length >= req_size) {
880 			free_part = part;
883 		if (part->header.length > size &&
884 		    part->header.length >= min_size) {
885 			size = part->header.length;
886 			free_part = part;
952 	struct nvram_partition *part;
954 	list_for_each_entry(part, &nvram_partitions, partition) {
955 		if (part->index + NVRAM_HEADER_LEN == data_index)
956 			return (part->header.length - 1) * NVRAM_BLOCK_LEN;
966  * @out_size: if non-NULL, returns the size of the data part of the partition