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Intel Stratix10 Remote System Update (RSU) device attributes
What: /sys/devices/platform/stratix10-rsu.0/current_image
Date: August 2019
KernelVersion: 5.4
Contact: Richard Gong <richard.gong@linux.intel.com>
Description:
(RO) the address in flash of currently running image.
What: /sys/devices/platform/stratix10-rsu.0/fail_image
Date: August 2019
KernelVersion: 5.4
Contact: Richard Gong <richard.gong@linux.intel.com>
Description:
(RO) the address in flash of failed image.
What: /sys/devices/platform/stratix10-rsu.0/state
Date: August 2019
KernelVersion: 5.4
Contact: Richard Gong <richard.gong@linux.intel.com>
Description:
(RO) the state of RSU system.
The state field has two parts: major error code in
upper 16 bits and minor error code in lower 16 bits.
b[15:0]
Currently used only when major error is 0xF006
(CPU watchdog timeout), in which case the minor
error code is the value reported by CPU to
firmware through the RSU notify command before
the watchdog timeout occurs.
b[31:16]
0xF001 bitstream error
0xF002 hardware access failure
0xF003 bitstream corruption
0xF004 internal error
0xF005 device error
0xF006 CPU watchdog timeout
0xF007 internal unknown error
What: /sys/devices/platform/stratix10-rsu.0/version
Date: August 2019
KernelVersion: 5.4
Contact: Richard Gong <richard.gong@linux.intel.com>
Description:
(RO) the version number of RSU firmware. 19.3 or late
version includes information about the firmware which
reported the error.
pre 19.3:
b[31:0]
0x0 version number
19.3 or late:
b[15:0]
0x1 version number
b[31:16]
0x0 no error
0x0DCF Decision CMF error
0x0ACF Application CMF error
What: /sys/devices/platform/stratix10-rsu.0/error_location
Date: August 2019
KernelVersion: 5.4
Contact: Richard Gong <richard.gong@linux.intel.com>
Description:
(RO) the error offset inside the image that failed.
What: /sys/devices/platform/stratix10-rsu.0/error_details
Date: August 2019
KernelVersion: 5.4
Contact: Richard Gong <richard.gong@linux.intel.com>
Description:
(RO) error code.
What: /sys/devices/platform/stratix10-rsu.0/retry_counter
Date: August 2019
KernelVersion: 5.4
Contact: Richard Gong <richard.gong@linux.intel.com>
Description:
(RO) the current image's retry counter, which is used by
user to know how many times the images is still allowed
to reload itself before giving up and starting RSU
fail-over flow.
What: /sys/devices/platform/stratix10-rsu.0/reboot_image
Date: August 2019
KernelVersion: 5.4
Contact: Richard Gong <richard.gong@linux.intel.com>
Description:
(WO) the address in flash of image to be loaded on next
reboot command.
What: /sys/devices/platform/stratix10-rsu.0/notify
Date: August 2019
KernelVersion: 5.4
Contact: Richard Gong <richard.gong@linux.intel.com>
Description:
(WO) client to notify firmware with different actions.
b[15:0]
inform firmware the current software execution
stage.
0 the first stage bootloader didn't run or
didn't reach the point of launching second
stage bootloader.
1 failed in second bootloader or didn't get
to the point of launching the operating
system.
2 both first and second stage bootloader ran
and the operating system launch was
attempted.
b[16]
1 firmware to reset current image retry
counter.
0 no action.
b[17]
1 firmware to clear RSU log
0 no action.
b[18]
this is negative logic
1 no action
0 firmware record the notify code defined
in b[15:0].
What: /sys/devices/platform/stratix10-rsu.0/dcmf0
Date: June 2020
KernelVersion: 5.8
Contact: Richard Gong <richard.gong@linux.intel.com>
Description:
(RO) Decision firmware copy 0 version information.
What: /sys/devices/platform/stratix10-rsu.0/dcmf1
Date: June 2020
KernelVersion: 5.8
Contact: Richard Gong <richard.gong@linux.intel.com>
Description:
(RO) Decision firmware copy 1 version information.
What: /sys/devices/platform/stratix10-rsu.0/dcmf2
Date: June 2020
KernelVersion: 5.8
Contact: Richard Gong <richard.gong@linux.intel.com>
Description:
(RO) Decision firmware copy 2 version information.
What: /sys/devices/platform/stratix10-rsu.0/dcmf3
Date: June 2020
KernelVersion: 5.8
Contact: Richard Gong <richard.gong@linux.intel.com>
Description:
(RO) Decision firmware copy 3 version information.
What: /sys/devices/platform/stratix10-rsu.0/max_retry
Date: June 2020
KernelVersion: 5.8
Contact: Richard Gong <richard.gong@linux.intel.com>
Description:
(RO) max retry parameter is stored in the firmware
decision IO section, as a byte located at offset 0x18c.
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