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virtio: rng: Add a random number generator(rng) driver

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Add a driver for the virtio-rng device on the qemu platform. The
device uses pci as a transport medium. The driver can be enabled with
the following configs

CONFIG_VIRTIO
CONFIG_DM_RNG
CONFIG_VIRTIO_PCI
CONFIG_VIRTIO_RNG

Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org>
This commit is contained in:
Sughosh Ganu
2019-12-29 15:30:14 +05:30
committed by Heinrich Schuchardt
parent 4ee08eb115
commit 03018ea8fd
5 changed files with 99 additions and 1 deletions
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4
include/virtio.h
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@@ -22,10 +22,12 @@
#define VIRTIO_ID_NET 1 /* virtio net */
#define VIRTIO_ID_BLOCK 2 /* virtio block */
#define VIRTIO_ID_MAX_NUM 3
#define VIRTIO_ID_RNG 4 /* virtio rng */
#define VIRTIO_ID_MAX_NUM 5
#define VIRTIO_NET_DRV_NAME "virtio-net"
#define VIRTIO_BLK_DRV_NAME "virtio-blk"
#define VIRTIO_RNG_DRV_NAME "virtio-rng"
/* Status byte for guest to report progress, and synchronize features */