forked from luck/tmp_suning_uos_patched
1f9327fcff
Add documentation for MSystems disk-on-chip docg3 chips sysfs entries, which enable and disable protection areas, giving or disabling access to the chip's memory. Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
35 lines
1.2 KiB
Plaintext
35 lines
1.2 KiB
Plaintext
What: /sys/devices/platform/docg3/f[0-3]_dps[01]_is_keylocked
|
|
Date: November 2011
|
|
KernelVersion: 3.3
|
|
Contact: Robert Jarzmik <robert.jarzmik@free.fr>
|
|
Description:
|
|
Show whether the floor (0 to 4), protection area (0 or 1) is
|
|
keylocked. Each docg3 chip (or floor) has 2 protection areas,
|
|
which can cover any part of it, block aligned, called DPS.
|
|
The protection has information embedded whether it blocks reads,
|
|
writes or both.
|
|
The result is:
|
|
0 -> the DPS is not keylocked
|
|
1 -> the DPS is keylocked
|
|
Users: None identified so far.
|
|
|
|
What: /sys/devices/platform/docg3/f[0-3]_dps[01]_protection_key
|
|
Date: November 2011
|
|
KernelVersion: 3.3
|
|
Contact: Robert Jarzmik <robert.jarzmik@free.fr>
|
|
Description:
|
|
Enter the protection key for the floor (0 to 4), protection area
|
|
(0 or 1). Each docg3 chip (or floor) has 2 protection areas,
|
|
which can cover any part of it, block aligned, called DPS.
|
|
The protection has information embedded whether it blocks reads,
|
|
writes or both.
|
|
The protection key is a string of 8 bytes (value 0-255).
|
|
Entering the correct value toggle the lock, and can be observed
|
|
through f[0-3]_dps[01]_is_keylocked.
|
|
Possible values are:
|
|
- 8 bytes
|
|
Typical values are:
|
|
- "00000000"
|
|
- "12345678"
|
|
Users: None identified so far.
|