diff options
| author | Michael Ellerman <michael@ellerman.id.au> | 2013-10-11 07:07:58 +0400 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2013-10-11 09:50:20 +0400 |
| commit | 66548e40583b1470300341c6784fdc5176f7609f (patch) | |
| tree | f8025f7e31ea5eab9db246107cba82651bd0eb36 /drivers/char/hw_random/Kconfig | |
| parent | a4da0d50b2a00b79390092e6248ca88b7d93c81d (diff) | |
| download | linux-66548e40583b1470300341c6784fdc5176f7609f.tar.xz | |
hwrng: Add a driver for the hwrng found in power7+ systems
Add a driver for the hwrng found in power7+ systems, based on the
existing code for the arch_get_random_long() hook.
We only register a single instance of the driver, not one per device,
because we use the existing per_cpu array of devices in the arch code.
This means we always read from the "closest" device, avoiding inter-chip
memory traffic.
Signed-off-by: Guo Chao <yan@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'drivers/char/hw_random/Kconfig')
| -rw-r--r-- | drivers/char/hw_random/Kconfig | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/char/hw_random/Kconfig b/drivers/char/hw_random/Kconfig index 0aa9d91daef5..c206de2951f2 100644 --- a/drivers/char/hw_random/Kconfig +++ b/drivers/char/hw_random/Kconfig @@ -290,6 +290,19 @@ config HW_RANDOM_PSERIES If unsure, say Y. +config HW_RANDOM_POWERNV + tristate "PowerNV Random Number Generator support" + depends on HW_RANDOM && PPC_POWERNV + default HW_RANDOM + ---help--- + This is the driver for Random Number Generator hardware found + in POWER7+ and above machines for PowerNV platform. + + To compile this driver as a module, choose M here: the + module will be called powernv-rng. + + If unsure, say Y. + config HW_RANDOM_EXYNOS tristate "EXYNOS HW random number generator support" depends on HW_RANDOM && HAS_IOMEM && HAVE_CLK |