1 // SPDX-License-Identifier: GPL-2.0+
6  * software to manage reset-time actions.
12 #include <linux/arm-smccc.h>
19 #include "mlxbf-bootctl.h"
29 	"89c036b4-e7d7-11e6-8797-001aca00bfc4";
33 	const char *name;  member
54 	[MLXBF_BOOTCTL_SB_LIFECYCLE_GA_NON_SECURE] = "GA Non-Secured",
135 	((ETH_ALEN * 2) + (ETH_ALEN - 1))
153 		if (sysfs_streq(boot_names[i].name, action))  in mlxbf_bootctl_reset_action_to_val()
156 	return -EINVAL;  in mlxbf_bootctl_reset_action_to_val()
166 			return boot_names[i].name;  in mlxbf_bootctl_action_to_string()
172 				    struct device_attribute *attr, char *buf)  in post_reset_wdog_show()  argument
184 				     struct device_attribute *attr,  in post_reset_wdog_store()  argument
228 				 struct device_attribute *attr, char *buf)  in reset_action_show()  argument
234 				  struct device_attribute *attr,  in reset_action_store()  argument
241 					struct device_attribute *attr,  in second_reset_action_show()  argument
248 					 struct device_attribute *attr,  in second_reset_action_store()  argument
256 				    struct device_attribute *attr, char *buf)  in lifecycle_state_show()  argument
288 					   struct device_attribute *attr,  in secure_boot_fuse_state_show()  argument
317 	for (key = MLXBF_SB_KEY_NUM - 1; key >= 0; key--) {  in secure_boot_fuse_state_show()
343 			      struct device_attribute *attr,  in fw_reset_store()  argument
354 		return -EINVAL;  in fw_reset_store()
359 /* Size(8-byte words) of the log buffer. */
379 			     struct device_attribute *attr,  in rsh_log_store()  argument
387 		return -EINVAL;  in rsh_log_store()
390 		return -EOPNOTSUPP;  in rsh_log_store()
393 	if (buf[size - 1] == '\n')  in rsh_log_store()
394 		size--;  in rsh_log_store()
402 			size -= len;  in rsh_log_store()
410 		size--;  in rsh_log_store()
422 		  RSH_SCRATCH_BUF_CTL_IDX_MASK - idx - 1);  in rsh_log_store()
440 			size -= sizeof(u64);  in rsh_log_store()
455 				struct device_attribute *attr, char *buf)  in large_icm_show()  argument
464 		return -EPERM;  in large_icm_show()
470 			       struct device_attribute *attr,  in large_icm_store()  argument
483 		return -EPERM;  in large_icm_store()
489 	return res.a0 ? -EPERM : count;  in large_icm_store()
493 			   struct device_attribute *attr,  in os_up_store()  argument
505 		return -EINVAL;  in os_up_store()
515 			    struct device_attribute *attr, char *buf)  in oob_mac_show()  argument
525 		return -EPERM;  in oob_mac_show()
533 			     struct device_attribute *attr,  in oob_mac_store()  argument
542 	if ((count - 1) != MLNX_MFG_OOB_MAC_FORMAT_LEN)  in oob_mac_store()
543 		return -EINVAL;  in oob_mac_store()
549 		return -EINVAL;  in oob_mac_store()
561 	return res.a0 ? -EPERM : count;  in oob_mac_store()
565 			struct device_attribute *attr, char *buf)  in opn_show()  argument
578 			return -EPERM;  in opn_show()
588 			 struct device_attribute *attr,  in opn_store()  argument
596 		return -EINVAL;  in opn_store()
607 			return -EPERM;  in opn_store()
616 			struct device_attribute *attr, char *buf)  in sku_show()  argument
629 			return -EPERM;  in sku_show()
639 			 struct device_attribute *attr,  in sku_store()  argument
647 		return -EINVAL;  in sku_store()
658 			return -EPERM;  in sku_store()
667 			 struct device_attribute *attr, char *buf)  in modl_show()  argument
680 			return -EPERM;  in modl_show()
690 			  struct device_attribute *attr,  in modl_store()  argument
698 		return -EINVAL;  in modl_store()
709 			return -EPERM;  in modl_store()
718 		       struct device_attribute *attr, char *buf)  in sn_show()  argument
731 			return -EPERM;  in sn_show()
741 			struct device_attribute *attr,  in sn_store()  argument
749 		return -EINVAL;  in sn_store()
760 			return -EPERM;  in sn_store()
769 			 struct device_attribute *attr, char *buf)  in uuid_show()  argument
782 			return -EPERM;  in uuid_show()
792 			  struct device_attribute *attr,  in uuid_store()  argument
800 		return -EINVAL;  in uuid_store()
811 			return -EPERM;  in uuid_store()
820 			struct device_attribute *attr, char *buf)  in rev_show()  argument
833 			return -EPERM;  in rev_show()
843 			 struct device_attribute *attr,  in rev_store()  argument
851 		return -EINVAL;  in rev_store()
862 			return -EPERM;  in rev_store()
871 			      struct device_attribute *attr,  in mfg_lock_store()  argument
883 		return -EINVAL;  in mfg_lock_store()
911 	&dev_attr_post_reset_wdog.attr,
912 	&dev_attr_reset_action.attr,
913 	&dev_attr_second_reset_action.attr,
914 	&dev_attr_lifecycle_state.attr,
915 	&dev_attr_secure_boot_fuse_state.attr,
916 	&dev_attr_fw_reset.attr,
917 	&dev_attr_rsh_log.attr,
918 	&dev_attr_large_icm.attr,
919 	&dev_attr_os_up.attr,
920 	&dev_attr_oob_mac.attr,
921 	&dev_attr_opn.attr,
922 	&dev_attr_sku.attr,
923 	&dev_attr_modl.attr,
924 	&dev_attr_sn.attr,
925 	&dev_attr_uuid.attr,
926 	&dev_attr_rev.attr,
927 	&dev_attr_mfg_lock.attr,
948 	u64 data, cnt = 0;  in mlxbf_bootctl_bootfifo_read()  local
953 		if (!cnt) {  in mlxbf_bootctl_bootfifo_read()
954 			cnt = readq(mlxbf_rsh_boot_cnt);  in mlxbf_bootctl_bootfifo_read()
955 			if (!cnt) {  in mlxbf_bootctl_bootfifo_read()
965 		count -= sizeof(data);  in mlxbf_bootctl_bootfifo_read()
967 		cnt--;  in mlxbf_bootctl_bootfifo_read()
971 	return p - buf;  in mlxbf_bootctl_bootfifo_read()
975 	.attr = { .name = "bootfifo", .mode = 0400 },
982 	guid_t id = GUID_INIT(res->a0, res->a1, res->a1 >> 16,  in mlxbf_bootctl_guid_match()
983 			      res->a2, res->a2 >> 8, res->a2 >> 16,  in mlxbf_bootctl_guid_match()
984 			      res->a2 >> 24, res->a3, res->a3 >> 8,  in mlxbf_bootctl_guid_match()
985 			      res->a3 >> 16, res->a3 >> 24);  in mlxbf_bootctl_guid_match()
1023 		return -ENODEV;  in mlxbf_bootctl_probe()
1034 		dev_warn(&pdev->dev, "Unable to reset the EMMC boot mode\n");  in mlxbf_bootctl_probe()
1036 	ret = sysfs_create_bin_file(&pdev->dev.kobj,  in mlxbf_bootctl_probe()
1046 	sysfs_remove_bin_file(&pdev->dev.kobj,  in mlxbf_bootctl_remove()
1054 		.name = "mlxbf-bootctl",