mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
synced 2025-10-31 18:28:19 +00:00
9c3c133b1e
Some hardware platforms, the TS-7800[1] is one for example, can
supply the kernel with an entropy source, albeit a slow one for
TS-7800 users, by just reading a particular IO address. This
source must not be read above a certain rate otherwise the quality
suffers.
The driver is then hooked into by calling
platform_device_(register|add|del) passing a structure similar to:
------
static struct timeriomem_rng_data ts78xx_ts_rng_data = {
.address = (u32 *__iomem) TS_RNG,
.period = 1000000, /* one second */
};
static struct platform_device ts78xx_ts_rng_device = {
.name = "timeriomem_rng",
.id = -1,
.dev = {
.platform_data = &ts78xx_ts_rng_data,
},
.num_resources = 0,
};
------
[1] http://www.embeddedarm.com/products/board-detail.php?product=TS-7800
Signed-off-by: Alexander Clouter <alex@digriz.org.uk>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
18 lines
611 B
Makefile
18 lines
611 B
Makefile
#
|
|
# Makefile for HW Random Number Generator (RNG) device drivers.
|
|
#
|
|
|
|
obj-$(CONFIG_HW_RANDOM) += rng-core.o
|
|
rng-core-y := core.o
|
|
obj-$(CONFIG_HW_RANDOM_TIMERIOMEM) += timeriomem-rng.o
|
|
obj-$(CONFIG_HW_RANDOM_INTEL) += intel-rng.o
|
|
obj-$(CONFIG_HW_RANDOM_AMD) += amd-rng.o
|
|
obj-$(CONFIG_HW_RANDOM_GEODE) += geode-rng.o
|
|
obj-$(CONFIG_HW_RANDOM_N2RNG) += n2-rng.o
|
|
n2-rng-y := n2-drv.o n2-asm.o
|
|
obj-$(CONFIG_HW_RANDOM_VIA) += via-rng.o
|
|
obj-$(CONFIG_HW_RANDOM_IXP4XX) += ixp4xx-rng.o
|
|
obj-$(CONFIG_HW_RANDOM_OMAP) += omap-rng.o
|
|
obj-$(CONFIG_HW_RANDOM_PASEMI) += pasemi-rng.o
|
|
obj-$(CONFIG_HW_RANDOM_VIRTIO) += virtio-rng.o
|