diff options
| author | David Daney <ddaney@caviumnetworks.com> | 2010-10-07 16:03:53 -0700 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2010-10-29 19:08:43 +0100 |
| commit | c9941158fd8a539a56b0e8a4740ec1f6beb23ea3 (patch) | |
| tree | 73e3868737061e1d5b0b61c182ea443e3ccd94e3 /arch/mips/cavium-octeon/Kconfig | |
| parent | 468ffde46d429fbd291b0ef43a06afe9c837629f (diff) | |
MIPS: Octeon: Apply CN63XXP1 errata workarounds.
The CN63XXP1 needs a couple of workarounds to ensure memory is not written
in unexpected ways.
All PREF with hints in the range 0-4,6-24 are replaced with PREF 28. We
pass a flag to the assembler to cover compiler generated code, and patch
uasm for the dynamically generated code.
The write buffer threshold is reduced to 4.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Patchwork: http://patchwork.linux-mips.org/patch/1672/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/cavium-octeon/Kconfig')
| -rw-r--r-- | arch/mips/cavium-octeon/Kconfig | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/mips/cavium-octeon/Kconfig b/arch/mips/cavium-octeon/Kconfig index 475156b0c807..caae22858163 100644 --- a/arch/mips/cavium-octeon/Kconfig +++ b/arch/mips/cavium-octeon/Kconfig @@ -3,6 +3,17 @@ config CAVIUM_OCTEON_SPECIFIC_OPTIONS depends on CPU_CAVIUM_OCTEON default "y" +config CAVIUM_CN63XXP1 + bool "Enable CN63XXP1 errata worarounds" + depends on CAVIUM_OCTEON_SPECIFIC_OPTIONS + default "n" + help + The CN63XXP1 chip requires build time workarounds to + function reliably, select this option to enable them. These + workarounds will cause a slight decrease in performance on + non-CN63XXP1 hardware, so it is recommended to select "n" + unless it is known the workarounds are needed. + config CAVIUM_OCTEON_2ND_KERNEL bool "Build the kernel to be used as a 2nd kernel on the same chip" depends on CAVIUM_OCTEON_SPECIFIC_OPTIONS |