author | Timur Tabi <timur@freescale.com> | |
Thu, 25 Oct 2012 12:40:00 +0000 (12:40 +0000) | ||
committer | Andy Fleming <afleming@freescale.com> | |
Wed, 28 Nov 2012 00:28:06 +0000 (18:28 -0600) | ||
commit | 0118033b6700fc96a84a8c0593af3cbe2f10a6dc | |
tree | c8d8e3e5b7484a8bcb11f0f3f2cdc9834ed711b1 | tree | snapshot (tar.xz tar.gz zip) |
parent | d31e53b42c35a9285c1e688733ceaa995689418b | commit | diff |
powerpc/85xx: implement check for erratum A-004849 work-around
The work-around for erratum A-004849 ("CoreNet fabric (CCF) can exhibit a
deadlock under certain traffic patterns causing the system to hang") is
implemented via the PBI (pre-boot initialization code, typically attached
to the RCW binary). This is because the work-around is easier to implement
in PBI than in U-Boot itself.
It is still useful, however, for the 'errata' command to tell us whether
the work-around has been applied. For A-004849, we can do this by verifying
that the values in the specific registers that the work-around says to
update.
Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
The work-around for erratum A-004849 ("CoreNet fabric (CCF) can exhibit a
deadlock under certain traffic patterns causing the system to hang") is
implemented via the PBI (pre-boot initialization code, typically attached
to the RCW binary). This is because the work-around is easier to implement
in PBI than in U-Boot itself.
It is still useful, however, for the 'errata' command to tell us whether
the work-around has been applied. For A-004849, we can do this by verifying
that the values in the specific registers that the work-around says to
update.
Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
arch/powerpc/cpu/mpc85xx/cmd_errata.c | diff | blob | history | |
arch/powerpc/include/asm/config_mpc85xx.h | diff | blob | history |