tree b28894d2dfa41598b8bbf2159e05d662b9b54a85
parent f5a289ba1ec0323bc588d504a5bb82a21f60cc0d
author Fabio Estevam <fabio.estevam@freescale.com> 1336388160 +0000
committer Stefano Babic <sbabic@denx.de> 1350491112 +0200

mx5: Add workaround for ARM erratum ID 468414

Add the software workaround for ARM erratum ID 468414.

According to mx53/mx51 errata document:

"ENGcm11133 - ARM: NEON load data can be incorrectly forwarded to a
subsequent request

Description:

Under very specific set of conditions, data from a Neon load request can be incorrectly forwarded
to a subsequent, unrelated memory request.
The conditions are as follows:
• Neon loads and stores must be in use
• Neon L1 caching must be disabled
• Trustzone must be configured and in use
• The secure memory address space and the non-secure memory address space both use the same
physical addresses, either as an alias or the same memory location or for separate memory
locations
The issue is reported by ARM, erratum ID 468414, Category 2"

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>