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| author | Russ Weight <russell.h.weight@intel.com> | 2022-04-21 14:22:02 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-04-26 12:36:08 +0200 |
| commit | a31ad463b72de2ec1a71bb4690acaf1e6dcafb45 (patch) | |
| tree | a894a4cff1c21c6e3405891e5151c277b59538dc /drivers | |
| parent | 536fd8184b7dfa30e28e5b459e7c5c91c3a8063f (diff) | |
| download | linux-a31ad463b72de2ec1a71bb4690acaf1e6dcafb45.tar.gz | |
test_firmware: Add test support for firmware upload
Add support for testing the firmware upload driver. There are four sysfs
nodes added:
upload_register: write-only
Write the name of the firmware device node to be created
upload_unregister: write-only
Write the name of the firmware device node to be destroyed
config_upload_name: read/write
Set the name to be used by upload_read
upload_read: read-only
Read back the data associated with the firmware device node named
in config_upload_name
You can create multiple, concurrent firmware device nodes for firmware
upload testing. Read firmware back and validate it using config_upload_name
and upload_red.
Example:
$ cd /sys/devices/virtual/misc/test_firmware
$ echo -n fw1 > upload_register
$ ls fw1
cancel data device error loading power remaining_size status
subsystem uevent
$ dd if=/dev/urandom of=/tmp/random-firmware.bin bs=512 count=4
4+0 records in
4+0 records out
2048 bytes (2.0 kB, 2.0 KiB) copied, 0.000131959 s, 15.5 MB/s
$ echo 1 > fw1/loading
$ cat /tmp/random-firmware.bin > fw1/data
$ echo 0 > fw1/loading
$ cat fw1/status
idle
$ cat fw1/error
$ echo -n fw1 > config_upload_name
$ cmp /tmp/random-firmware.bin upload_read
$ echo $?
0
$ echo -n fw1 > upload_unregister
Reviewed-by: Luis Chamberlain <mcgrof@kernel.org>
Reviewed-by: Tianfei zhang <tianfei.zhang@intel.com>
Tested-by: Matthew Gerlach <matthew.gerlach@linux.intel.com>
Signed-off-by: Russ Weight <russell.h.weight@intel.com>
Link: https://lore.kernel.org/r/20220421212204.36052-7-russell.h.weight@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
0 files changed, 0 insertions, 0 deletions