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bootstd: Add a virtio bootdev

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Add a bootdev for virtio so that these devices can be used with standard
boot.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
2023-01-17 10:47:52 -07:00
committed by Tom Rini
parent 00fc8cade8
commit a60f7a3e35
2 changed files with 57 additions and 5 deletions
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50
drivers/virtio/virtio-uclass.c
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@@ -18,6 +18,7 @@
#define LOG_CATEGORY UCLASS_VIRTIO
#include <common.h>
#include <bootdev.h>
#include <dm.h>
#include <log.h>
#include <malloc.h>
@@ -246,6 +247,12 @@ static int virtio_uclass_post_probe(struct udevice *udev)
}
device_set_name_alloced(vdev);
if (uc_priv->device == VIRTIO_ID_BLOCK) {
ret = bootdev_setup_for_dev(udev, name);
if (ret)
return log_msg_ret("bootdev", ret);
}
INIT_LIST_HEAD(&uc_priv->vqs);
return 0;
@@ -349,6 +356,26 @@ static int virtio_uclass_child_post_probe(struct udevice *vdev)
return 0;
}
static int virtio_bootdev_bind(struct udevice *dev)
{
struct bootdev_uc_plat *ucp = dev_get_uclass_plat(dev);
ucp->prio = BOOTDEVP_2_SCAN_FAST;
return 0;
}
static int virtio_bootdev_hunt(struct bootdev_hunter *info, bool show)
{
int ret;
ret = uclass_probe_all(UCLASS_VIRTIO);
if (ret && ret != -ENOENT)
return log_msg_ret("vir", ret);
return 0;
}
UCLASS_DRIVER(virtio) = {
.name = "virtio",
.id = UCLASS_VIRTIO,
@@ -360,3 +387,26 @@ UCLASS_DRIVER(virtio) = {
.child_post_probe = virtio_uclass_child_post_probe,
.per_device_auto = sizeof(struct virtio_dev_priv),
};
struct bootdev_ops virtio_bootdev_ops = {
};
static const struct udevice_id virtio_bootdev_ids[] = {
{ .compatible = "u-boot,bootdev-virtio" },
{ }
};
U_BOOT_DRIVER(virtio_bootdev) = {
.name = "virtio_bootdev",
.id = UCLASS_BOOTDEV,
.ops = &virtio_bootdev_ops,
.bind = virtio_bootdev_bind,
.of_match = virtio_bootdev_ids,
};
BOOTDEV_HUNTER(virtio_bootdev_hunter) = {
.prio = BOOTDEVP_2_SCAN_FAST,
.uclass = UCLASS_VIRTIO,
.hunt = virtio_bootdev_hunt,
.drv = DM_DRIVER_REF(virtio_bootdev),
};