1 // SPDX-License-Identifier: GPL-2.0-only
49 	const u8 *bp = ((u8 *) dm) + dm->length;  in dmi_string_nosave()
53 		while (--s > 0 && *bp)  in dmi_string_nosave()
97 	 * (SMBIOS < 3.0 only) OR we reach an end-of-table marker (SMBIOS  in dmi_decode_table()
102 	       (data - buf + sizeof(struct dmi_header)) <= dmi_len) {  in dmi_decode_table()
109 		if (dm->length < sizeof(struct dmi_header)) {  in dmi_decode_table()
112 				data - buf, i);  in dmi_decode_table()
121 		data += dm->length;  in dmi_decode_table()
122 		while ((data - buf < dmi_len - 1) && (data[0] || data[1]))  in dmi_decode_table()
124 		if (data - buf < dmi_len - 1)  in dmi_decode_table()
131 		 * 7.45 End-of-Table (Type 127) [SMBIOS reference spec v3.0.0]  in dmi_decode_table()
132 		 * For tables behind a 64-bit entry point, we have no item  in dmi_decode_table()
133 		 * count and no exact table length, so stop on end-of-table  in dmi_decode_table()
134 		 * marker. For tables behind a 32-bit entry point, we have  in dmi_decode_table()
135 		 * seen OEM structures behind the end-of-table marker on  in dmi_decode_table()
138 		if (!dmi_num && dm->type == DMI_ENTRY_END_OF_TABLE)  in dmi_decode_table()
143 	if (dmi_len > data - buf)  in dmi_decode_table()
144 		dmi_len = data - buf;  in dmi_decode_table()
157 		return -ENOMEM;  in dmi_walk_early()
192 	if (dmi_ident[slot] || dm->length <= string)  in dmi_save_ident()
209 	if (dmi_ident[slot] || dm->length < index)  in dmi_save_release()
213 	major = (u8 *) dm + index - 1;  in dmi_save_release()
237 	if (dmi_ident[slot] || dm->length < index + 16)  in dmi_save_uuid()
257 	 * the UUID are supposed to be little-endian encoded.  The specification  in dmi_save_uuid()
274 	if (dmi_ident[slot] || dm->length <= index)  in dmi_save_type()
298 	dev->type = type;  in dmi_save_one_device()
300 	dev->name = (char *)(dev + 1);  in dmi_save_one_device()
301 	dev->device_data = NULL;  in dmi_save_one_device()
302 	list_add(&dev->list, &dmi_devices);  in dmi_save_one_device()
307 	int i, count = (dm->length - sizeof(struct dmi_header)) / 2;  in dmi_save_devices()
325 	if (dm->length < 0x05)  in dmi_save_oem_strings_devices()
339 		dev->type = DMI_DEV_TYPE_OEM_STRING;  in dmi_save_oem_strings_devices()
340 		dev->name = devname;  in dmi_save_oem_strings_devices()
341 		dev->device_data = NULL;  in dmi_save_oem_strings_devices()
343 		list_add(&dev->list, &dmi_devices);  in dmi_save_oem_strings_devices()
352 	data = dmi_alloc(dm->length);  in dmi_save_ipmi_device()
356 	memcpy(data, dm, dm->length);  in dmi_save_ipmi_device()
362 	dev->type = DMI_DEV_TYPE_IPMI;  in dmi_save_ipmi_device()
363 	dev->name = "IPMI controller";  in dmi_save_ipmi_device()
364 	dev->device_data = data;  in dmi_save_ipmi_device()
366 	list_add_tail(&dev->list, &dmi_devices);  in dmi_save_ipmi_device()
383 	dev->instance = instance;  in dmi_save_dev_pciaddr()
384 	dev->segment = segment;  in dmi_save_dev_pciaddr()
385 	dev->bus = bus;  in dmi_save_dev_pciaddr()
386 	dev->devfn = devfn;  in dmi_save_dev_pciaddr()
389 	dev->dev.type = type;  in dmi_save_dev_pciaddr()
390 	dev->dev.name = (char *)&dev[1];  in dmi_save_dev_pciaddr()
391 	dev->dev.device_data = dev;  in dmi_save_dev_pciaddr()
393 	list_add(&dev->dev.list, &dmi_devices);  in dmi_save_dev_pciaddr()
401 	if (dm->length < 0x0B)  in dmi_save_extended_devices()
419 	if (dm->length < 0x11)  in dmi_save_system_slot()
428 	if (dm->type != DMI_ENTRY_MEM_DEVICE)  in count_mem_devices()
440 	if (dm->type != DMI_ENTRY_MEM_DEVICE || dm->length < 0x13)  in save_mem_devices()
446 	dmi_memdev[nr].handle = get_unaligned(&dm->handle);  in save_mem_devices()
458 	else if (size != 0x7fff || dm->length < 0x20)  in save_mem_devices()
486 	switch (dm->type) {  in dmi_decode()
544 			c += scnprintf(buf + c, len - c, "%c", *p);  in print_filtered()
546 			c += scnprintf(buf + c, len - c, "\\x%02x", *p & 0xff);  in print_filtered()
555 	c += print_filtered(buf + c, len - c,  in dmi_format_ids()
557 	c += scnprintf(buf + c, len - c, " ");  in dmi_format_ids()
558 	c += print_filtered(buf + c, len - c,  in dmi_format_ids()
563 		c += scnprintf(buf + c, len - c, "/");  in dmi_format_ids()
564 		c += print_filtered(buf + c, len - c, board);  in dmi_format_ids()
566 	c += scnprintf(buf + c, len - c, ", BIOS ");  in dmi_format_ids()
567 	c += print_filtered(buf + c, len - c,  in dmi_format_ids()
569 	c += scnprintf(buf + c, len - c, " ");  in dmi_format_ids()
570 	c += print_filtered(buf + c, len - c,  in dmi_format_ids()
576  * SMBIOS header must start 16 bytes before the DMI header, so take a
600 			pr_debug("SMBIOS version fixup (2.%d->2.%d)\n",  in dmi_present()
605 			pr_debug("SMBIOS version fixup (2.%d->2.%d)\n", 51, 6);  in dmi_present()
646  * Check for the SMBIOS 3.0 64-bit entry point signature. Unlike the legacy
647  * 32-bit entry point, there is no embedded DMI header (_DMI_) in here.
681 		 * allowed to define both the 64-bit entry point (smbios3) and  in dmi_scan_machine()
682 		 * the 32-bit entry point (smbios), in which case they should  in dmi_scan_machine()
684 		 * table pointed to by the 64-bit entry point should contain a  in dmi_scan_machine()
685 		 * superset of the table contents pointed to by the 32-bit entry  in dmi_scan_machine()
687 		 * This implies that the 64-bit entry point should have  in dmi_scan_machine()
689 		 * have the 64-bit entry point, but fail to decode it, fall  in dmi_scan_machine()
727 		 * Same logic as above, look for a 64-bit entry point  in dmi_scan_machine()
728 		 * first, and if not found, fall back to 32-bit entry point.  in dmi_scan_machine()
745 		 * out-of-range bytes so there is no chance of falsely  in dmi_scan_machine()
771 	int ret = -ENOMEM;  in dmi_init()
779 	 * dmi-sysfs.  in dmi_init()
820  *	dmi_setup - scan and setup DMI system information
840  *	dmi_matches - check if dmi_system_id structure matches system DMI data
847 	for (i = 0; i < ARRAY_SIZE(dmi->matches); i++) {  in dmi_matches()
848 		int s = dmi->matches[i].slot;  in dmi_matches()
856 						dmi->matches[i].substr, NULL);  in dmi_matches()
860 			if (dmi->matches[i].exact_match) {  in dmi_matches()
862 					    dmi->matches[i].substr))  in dmi_matches()
866 					   dmi->matches[i].substr))  in dmi_matches()
878  *	dmi_is_end_of_table - check for end-of-table marker
883 	return dmi->matches[0].slot == DMI_NONE;  in dmi_is_end_of_table()
887  *	dmi_check_system - check system DMI data
889  *		All non-null elements of the list must match
909 			if (d->callback && d->callback(d))  in dmi_check_system()
918  *	dmi_first_match - find dmi_system_id structure matching system DMI data
920  *		All non-null elements of the list must match
944  *	dmi_get_system_info - return DMI data value
957  * dmi_name_in_serial - Check if string is in the DMI product serial information
969  *	dmi_name_in_vendors - Check if string is in the DMI system or board vendor name
986  *	dmi_find_device - find onboard device by type/name
1000 	const struct list_head *head = from ? &from->list : &dmi_devices;  in dmi_find_device()
1003 	for (d = head->next; d != &dmi_devices; d = d->next) {  in dmi_find_device()
1007 		if (((type == DMI_DEV_TYPE_ANY) || (dev->type == type)) &&  in dmi_find_device()
1008 		    ((name == NULL) || (strcmp(dev->name, name) == 0)))  in dmi_find_device()
1017  *	dmi_get_date - parse a DMI date
1019  *	@yearp: optional out parameter for the year
1031  *	On return, year, month and day are guaranteed to be in the
1036 	int year = 0, month = 0, day = 0;  in dmi_get_date()  local
1047 	 * Determine year first.  We assume the date string resembles  in dmi_get_date()
1048 	 * mm/dd/yy[yy] but the original code extracted only the year  in dmi_get_date()
1057 	year = simple_strtoul(y, &e, 10);  in dmi_get_date()
1058 	if (y != e && year < 100) {	/* 2-digit year */  in dmi_get_date()
1059 		year += 1900;  in dmi_get_date()
1060 		if (year < 1996)	/* no dates < spec 1.0 */  in dmi_get_date()
1061 			year += 100;  in dmi_get_date()
1063 	if (year > 9999)		/* year should fit in %04d */  in dmi_get_date()
1064 		year = 0;  in dmi_get_date()
1079 		*yearp = year;  in dmi_get_date()
1089  *	dmi_get_bios_year - get a year out of DMI_BIOS_DATE field
1091  *	Returns year on success, -ENXIO if DMI is not selected,
1098 	int year;  in dmi_get_bios_year()  local
1100 	exists = dmi_get_date(DMI_BIOS_DATE, &year, NULL, NULL);  in dmi_get_bios_year()
1102 		return -ENODATA;  in dmi_get_bios_year()
1104 	return year ? year : -ERANGE;  in dmi_get_bios_year()
1109  *	dmi_walk - Walk the DMI table and get called back for every record
1113  *	Returns 0 on success, -ENXIO if DMI is not selected or not present,
1122 		return -ENXIO;  in dmi_walk()
1126 		return -ENOMEM;  in dmi_walk()
1136  * dmi_match - compare a string to the dmi field (if exists)
1185  * dmi_memdev_type - get the memory type
1206  *	dmi_memdev_handle - get the DMI handle of a memory slot