platform/x86/think-lmi.c

40  * Description: Change the BIOS setting to the desired value using the SetBiosSetting
106  *  This is particularly useful for simplifying setting passwords.
337 static int tlmi_opcode_setting(char *setting, const char *value)
342 	opcode_str = kasprintf(GFP_KERNEL, "%s:%s;", setting, value);
392 	struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
394 	return sysfs_emit(buf, "%d\n", setting->valid);
403 	struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
408 	if (pwdlen && ((pwdlen < setting->minlen) || (pwdlen > setting->maxlen)))
411 	strscpy(setting->password, buf, setting->maxlen);
412 	/* Strip out CR if one is present, setting password won't work if it is present */
413 	strreplace(setting->password, '\n', '\0');
423 	struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
434 	/* Strip out CR if one is present, setting password won't work if it is present */
444 	if (pwdlen && ((pwdlen < setting->minlen) || (pwdlen > setting->maxlen))) {
454 		if (setting == tlmi_priv.pwd_hdd) {
455 			if (setting->level == TLMI_LEVEL_USER)
456 				sprintf(pwd_type, "uhdp%d", setting->index);
458 				sprintf(pwd_type, "mhdp%d", setting->index);
459 		} else if (setting == tlmi_priv.pwd_nvme) {
460 			if (setting->level == TLMI_LEVEL_USER)
461 				sprintf(pwd_type, "udrp%d", setting->index);
463 				sprintf(pwd_type, "adrp%d", setting->index);
465 			sprintf(pwd_type, "%s", setting->pwd_type);
478 		ret = tlmi_opcode_setting("WmiOpcodePasswordCurrent01", setting->password);
488 				setting->pwd_type, setting->password, new_pwd,
489 				encoding_options[setting->encoding], setting->kbdlang);
508 	struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
510 	return sysfs_emit(buf, "%d\n", setting->minlen);
518 	struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
520 	return sysfs_emit(buf, "%d\n", setting->maxlen);
534 	struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
536 	return sysfs_emit(buf, "%s\n", encoding_options[setting->encoding]);
543 	struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
551 	setting->encoding = i;
560 	struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
562 	return sysfs_emit(buf, "%s\n", setting->kbdlang);
569 	struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
577 	memcpy(setting->kbdlang, buf, length);
578 	setting->kbdlang[length] = '\0';
587 	struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
589 	return sysfs_emit(buf, "%s\n", setting->role);
596 	struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
598 	return sysfs_emit(buf, "%d\n", setting->index);
605 	struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
615 	setting->index = val;
624 	struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
626 	return sysfs_emit(buf, "%s\n", level_options[setting->level]);
633 	struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
641 	setting->level = i;
675 	struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
678 	if (!tlmi_priv.certificate_support || !setting->cert_installed)
693 	struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
703 	if (!setting->cert_installed)
706 	if (!setting->signature || !setting->signature[0])
715 	auth_str = kasprintf(GFP_KERNEL, "%s,%s", passwd, setting->signature);
733 	struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
747 		if (!setting->signature || !setting->signature[0])
753 				setting->signature);
768 	if (setting->cert_installed) {
770 		if (!setting->signature || !setting->signature[0]) {
777 				new_cert, setting->signature);
780 		if (!setting->valid || !setting->password[0]) {
787 				new_cert, setting->password);
805 	struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
820 	kfree(setting->signature);
821 	setting->signature = new_signature;
832 	struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
847 	kfree(setting->save_signature);
848 	setting->save_signature = new_signature;
858 	struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
862 		if ((setting == tlmi_priv.pwd_hdd) || (setting == tlmi_priv.pwd_nvme))
873 		if ((setting == tlmi_priv.pwd_admin) && tlmi_priv.certificate_support)
915 	struct tlmi_attr_setting *setting = to_tlmi_attr_setting(kobj);
917 	return sysfs_emit(buf, "%s\n", setting->display_name);
922 	struct tlmi_attr_setting *setting = to_tlmi_attr_setting(kobj);
926 	ret = tlmi_setting(setting->index, &item, LENOVO_BIOS_SETTING_GUID);
946 	struct tlmi_attr_setting *setting = to_tlmi_attr_setting(kobj);
948 	return sysfs_emit(buf, "%s\n", setting->possible_values);
954 	struct tlmi_attr_setting *setting = to_tlmi_attr_setting(kobj);
956 	if (setting->possible_values) {
957 		/* Figure out what setting type is as BIOS does not return this */
958 		if (strchr(setting->possible_values, ';'))
969 	struct tlmi_attr_setting *setting = to_tlmi_attr_setting(kobj);
998 		set_str = kasprintf(GFP_KERNEL, "%s,%s,%s", setting->display_name,
1029 		set_str = kasprintf(GFP_KERNEL, "%s,%s;", setting->display_name,
1057 			set_str = kasprintf(GFP_KERNEL, "%s,%s,%s", setting->display_name,
1060 			set_str = kasprintf(GFP_KERNEL, "%s,%s;", setting->display_name,
1104 	struct tlmi_attr_setting *setting = to_tlmi_attr_setting(kobj);
1107 	if ((attr == &attr_possible_values.attr) && (!setting->possible_values))
1128 	struct tlmi_attr_setting *setting = to_tlmi_attr_setting(kobj);
1130 	kfree(setting->possible_values);
1131 	kfree(setting);
1136 	struct tlmi_pwd_setting *setting = to_tlmi_pwd_setting(kobj);
1138 	kfree(setting);
1168 	/* Check that setting is valid */
1321 		if (tlmi_priv.setting[i]) {
1322 			sysfs_remove_group(&tlmi_priv.setting[i]->kobj, &tlmi_attr_group);
1323 			kobject_put(&tlmi_priv.setting[i]->kobj);
1397 		/* Check if index is a valid setting - skip if it isn't */
1398 		if (!tlmi_priv.setting[i])
1403 					       tlmi_priv.setting[i]->display_name) < 0) {
1404 			kfree(tlmi_priv.setting[i]->possible_values);
1405 			kfree(tlmi_priv.setting[i]);
1406 			tlmi_priv.setting[i] = NULL;
1411 		tlmi_priv.setting[i]->kobj.kset = tlmi_priv.attribute_kset;
1412 		ret = kobject_add(&tlmi_priv.setting[i]->kobj, NULL,
1413 				  "%s", tlmi_priv.setting[i]->display_name);
1417 		ret = sysfs_create_group(&tlmi_priv.setting[i]->kobj, &tlmi_attr_group);
1557 		struct tlmi_attr_setting *setting;
1560 		tlmi_priv.setting[i] = NULL;
1577 		/* Create a setting entry */
1578 		setting = kzalloc(sizeof(*setting), GFP_KERNEL);
1579 		if (!setting) {
1584 		setting->index = i;
1585 		strscpy(setting->display_name, item, TLMI_SETTINGS_MAXLEN);
1588 			ret = tlmi_get_bios_selections(setting->display_name,
1589 					&setting->possible_values);
1590 			if (ret || !setting->possible_values)
1592 						i, setting->display_name);
1602 			if (!tlmi_setting(setting->index, &optitem, LENOVO_BIOS_SETTING_GUID)) {
1608 						setting->possible_values =
1619 		if (setting->possible_values)
1620 			strreplace(setting->possible_values, ',', ';');
1622 		kobject_init(&setting->kobj, &tlmi_attr_setting_ktype);
1623 		tlmi_priv.setting[i] = setting;
1627 	/* Create password setting structure */
1702 		if (tlmi_priv.setting[i]) {
1703 			kfree(tlmi_priv.setting[i]->possible_values);
1704 			kfree(tlmi_priv.setting[i]);