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powerpc/8xx: Remove CPU6 ERRATA Workaround

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CPU6 ERRATA affects only MPC860 revisions prior to C.0. Manufacturing
of those revisiosn was stopped in 1999-2000.
Therefore, it has been almost 20 years since this ERRATA has been
fixed in the silicon.

This patch removes the workaround for that ERRATA.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Christophe Leroy
2018-01-12 13:45:19 +01:00
committed by Michael Ellerman
parent 9a3b849bfe
commit 2a45addd21
4 changed files with 12 additions and 137 deletions
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12
arch/powerpc/platforms/8xx/Kconfig
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@@ -116,18 +116,6 @@ config 8xx_GPIO
If in doubt, say Y here.
config 8xx_CPU6
bool "CPU6 Silicon Errata (860 Pre Rev. C)"
help
MPC860 CPUs, prior to Rev C have some bugs in the silicon, which
require workarounds for Linux (and most other OSes to work). If you
get a BUG() very early in boot, this might fix the problem. For
more details read the document entitled "MPC860 Family Device Errata
Reference" on Freescale's website. This option also incurs a
performance hit.
If in doubt, say N here.
config 8xx_CPU15
bool "CPU15 Silicon Errata"
depends on !HUGETLB_PAGE