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powerpc/64s: Support new device tree binding for discovering CPU features

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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>
This commit is contained in:
Nicholas Piggin
2017-05-09 13:16:52 +10:00
committed by Michael Ellerman
parent 75bda95048
commit 5a61ef74f2
12 changed files with 1398 additions and 16 deletions
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arch/powerpc/include/asm/reg.h
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@@ -1229,6 +1229,7 @@
#define PVR_POWER8E 0x004B
#define PVR_POWER8NVL 0x004C
#define PVR_POWER8 0x004D
#define PVR_POWER9 0x004E
#define PVR_BE 0x0070
#define PVR_PA6T 0x0090