tree 40d996d2bdedb2e736847c0186cedefc09e25f45
parent 59d5657643c1cd24de579867abff1dcfa54d3803
author Alexander Filippov <a.filippov@yadro.com> 1576660007 +0300
committer Alexander Filippov <a.filippov@yadro.com> 1576826602 +0300

Fix ECC usage of being cleaned partitions

Reset procedure of PNOR works improperly for our P8 based VESNIN
hardware and makes the host unbootable.

The problem is in incorrect partition cleaning.

Hostboot for P8 has no support for CLEARECC bit and PNOR flash has no
partitions with flag 'C'.

P9 based hardware is not affected until PNOR has partitions with ECC
flag only.

This commit modifies the reset procedure to make it use the flag 'E'
(ECC) instead of 'C' (CLEARECC).

 * The flag 'E' means that the partition requires ECC.
 * The flag 'C' means that the partition might be cleaned by hostboot
   when ECC is wrong.

For details see:
https://github.com/open-power/hostboot/blob/75c0908b91275dc10bd17cb0f10b452f32ce0b91/src/include/usr/pnor/pnor_const.H#L128

Tested: All PNOR partitions with enabled flags 'E' and 'F' should be
cleaned with ECC.

Change-Id: I632e90c8e256df3445fc3d1f45c830d155a1d208
Signed-off-by: Alexander Filippov <a.filippov@yadro.com>