1 // SPDX-License-Identifier: GPL-2.0-only
18 	return sysfs_emit(buf, "%s", rproc->recovery_disabled ? "disabled\n" : "enabled\n");  in recovery_show()
22  * By writing to the 'recovery' sysfs entry, we control the behavior of the
23  * recovery mechanism dynamically. The default value of this entry is "enabled".
25  * The 'recovery' sysfs entry supports these commands:
29  *		processor crashes while recovery is disabled, it will
30  *		be automatically recovered too as soon as recovery is enabled.
36  * recover:	This function will trigger an immediate recovery if the
38  *		or checking the recovery state (enabled/disabled).
40  *		additional crashes to happen after enabling recovery. In this
41  *		case, enabling recovery will make it hard to debug subsequent
42  *		crashes, so it's recommended to keep recovery disabled, and
52 		/* change the flag and begin the recovery process if needed */  in recovery_store()
53 		rproc->recovery_disabled = false;  in recovery_store()
56 		rproc->recovery_disabled = true;  in recovery_store()
58 		/* begin the recovery process without changing the flag */  in recovery_store()
61 		return -EINVAL;  in recovery_store()
66 static DEVICE_ATTR_RW(recovery);
69  * A coredump-configuration-to-string lookup table, for exposing a
85 	return sysfs_emit(buf, "%s\n", rproc_coredump_str[rproc->dump_conf]);  in coredump_show()
94  * disabled:	This is the default coredump mechanism. Recovery will proceed
101  *		recovery process will have to wait until data is read by
110 	if (rproc->state == RPROC_CRASHED) {  in coredump_store()
111 		dev_err(&rproc->dev, "can't change coredump configuration\n");  in coredump_store()
112 		return -EBUSY;  in coredump_store()
116 		rproc->dump_conf = RPROC_COREDUMP_DISABLED;  in coredump_store()
118 		rproc->dump_conf = RPROC_COREDUMP_ENABLED;  in coredump_store()
120 		rproc->dump_conf = RPROC_COREDUMP_INLINE;  in coredump_store()
122 		dev_err(&rproc->dev, "Invalid coredump configuration\n");  in coredump_store()
123 		return -EINVAL;  in coredump_store()
135 	const char *firmware = rproc->firmware;  in firmware_show()
140 	 * simply display a generic string rather then rproc->firmware.  in firmware_show()
142 	if (rproc->state == RPROC_ATTACHED)  in firmware_show()
163  * A state-to-string lookup table, for exposing a human readable state
184 	state = rproc->state > RPROC_LAST ? RPROC_LAST : rproc->state;  in state_show()
199 			dev_err(&rproc->dev, "Boot failed: %d\n", ret);  in state_store()
205 		dev_err(&rproc->dev, "Unrecognised option: %s\n", buf);  in state_store()
206 		ret = -EINVAL;  in state_store()
218 	return sprintf(buf, "%s\n", rproc->name);  in name_show()
227 	umode_t mode = attr->mode;  in rproc_is_visible()  local
229 	if (rproc->sysfs_read_only && (attr == &dev_attr_recovery.attr ||  in rproc_is_visible()
233 		mode = 0444;  in rproc_is_visible()
235 	return mode;  in rproc_is_visible()