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| author | Nicholas Piggin <npiggin@gmail.com> | 2017-05-09 13:16:52 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2017-05-09 23:42:55 +1000 |
| commit | 5a61ef74f269f2573f48fa53607a8911216c3326 (patch) | |
| tree | 5282bc7ceb24c4864d1060bfe59688e72027b1cb /arch/powerpc/Kconfig | |
| parent | 75bda95048a4d2c5ff04036bd0181bc84085d8b2 (diff) | |
| download | linux-5a61ef74f269f2573f48fa53607a8911216c3326.tar.bz2 | |
powerpc/64s: Support new device tree binding for discovering CPU features
The ibm,powerpc-cpu-features device tree binding describes CPU features with
ASCII names and extensible compatibility, privilege, and enablement metadata
that allows improved flexibility and compatibility with new hardware.
The interface is described in detail in ibm,powerpc-cpu-features.txt in this
patch.
Currently this code is not enabled by default, and there are no released
firmwares that provide the binding.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/Kconfig')
| -rw-r--r-- | arch/powerpc/Kconfig | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 67ee6731f4e9..5bd868f2e813 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -380,6 +380,22 @@ source "arch/powerpc/platforms/Kconfig" menu "Kernel options" +config PPC_DT_CPU_FTRS + bool "Device-tree based CPU feature discovery & setup" + depends on PPC_BOOK3S_64 + default n + help + This enables code to use a new device tree binding for describing CPU + compatibility and features. Saying Y here will attempt to use the new + binding if the firmware provides it. Currently only the skiboot + firmware provides this binding. + If you're not sure say Y. + +config PPC_CPUFEATURES_ENABLE_UNKNOWN + bool "cpufeatures pass through unknown features to guest/userspace" + depends on PPC_DT_CPU_FTRS + default y + config HIGHMEM bool "High memory support" depends on PPC32 |