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| author | Michael Ellerman <michael@ellerman.id.au> | 2013-10-11 14:07:57 +1100 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2013-10-11 16:50:19 +1100 |
| commit | a4da0d50b2a00b79390092e6248ca88b7d93c81d (patch) | |
| tree | 4a481f28de594306b612938e037dd015114c2fd7 /arch/powerpc/platforms/powernv/Kconfig | |
| parent | f95dabef4c70e27e5114f4802fe6234ff82ce406 (diff) | |
powerpc: Implement arch_get_random_long/int() for powernv
Add the plumbing to implement arch_get_random_long/int(). It didn't seem
worth adding an extra ppc_md hook for int, so we reuse the one for long.
Add an implementation for powernv based on the hwrng found in power7+
systems. We whiten the output of the hwrng, and the result passes all
the dieharder tests.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/platforms/powernv/Kconfig')
| -rw-r--r-- | arch/powerpc/platforms/powernv/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/powernv/Kconfig b/arch/powerpc/platforms/powernv/Kconfig index 6fae5eb99ea6..21084645c70a 100644 --- a/arch/powerpc/platforms/powernv/Kconfig +++ b/arch/powerpc/platforms/powernv/Kconfig @@ -9,6 +9,7 @@ config PPC_POWERNV select EPAPR_BOOT select PPC_INDIRECT_PIO select PPC_UDBG_16550 + select ARCH_RANDOM default y config POWERNV_MSI |