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distro_bootcmd: add VirtIO distro boot command

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Add a boot command to distro boot to support disks connected over the
VirtIO bus. The boot command uses the shared block environment.

Signed-off-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Lukas Auer 2018-11-22 11:26:33 +01:00 committed by Andes
parent c3b1a99040
commit a8da9ff466
2 changed files with 15 additions and 1 deletions
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3
doc/README.distro
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@ -292,7 +292,7 @@ Each entry in the macro defines a single boot device (e.g. a specific eMMC
device or SD card) or type of boot device (e.g. USB disk). The parameters to
the func macro (passed in by the internal implementation of the header) are:
- Upper-case disk type (MMC, SATA, SCSI, IDE, USB, DHCP, PXE).
- Upper-case disk type (MMC, SATA, SCSI, IDE, USB, DHCP, PXE, VIRTIO).
- Lower-case disk type (same options as above).
- ID of the specific disk (MMC only) or ignored for other types.
@ -398,6 +398,7 @@ The list of possible targets consists of:
* scsi
* ide
* usb
* virtio
Other *boot* variables than the ones defined above are only for internal use
of the boot environment and are not guaranteed to exist or work in the same

13
include/config_distro_bootcmd.h
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@ -242,6 +242,18 @@
BOOT_TARGET_DEVICES_references_USB_without_CONFIG_CMD_USB
#endif
#ifdef CONFIG_CMD_VIRTIO
#define BOOTENV_SHARED_VIRTIO BOOTENV_SHARED_BLKDEV(virtio)
#define BOOTENV_DEV_VIRTIO BOOTENV_DEV_BLKDEV
#define BOOTENV_DEV_NAME_VIRTIO BOOTENV_DEV_NAME_BLKDEV
#else
#define BOOTENV_SHARED_VIRTIO
#define BOOTENV_DEV_VIRTIO \
BOOT_TARGET_DEVICES_references_VIRTIO_without_CONFIG_CMD_VIRTIO
#define BOOTENV_DEV_NAME_VIRTIO \
BOOT_TARGET_DEVICES_references_VIRTIO_without_CONFIG_CMD_VIRTIO
#endif
#if defined(CONFIG_CMD_DHCP)
#if defined(CONFIG_EFI_LOADER)
/* http://www.iana.org/assignments/dhcpv6-parameters/dhcpv6-parameters.xml */
@ -350,6 +362,7 @@
BOOTENV_SHARED_IDE \
BOOTENV_SHARED_UBIFS \
BOOTENV_SHARED_EFI \
BOOTENV_SHARED_VIRTIO \
"boot_prefixes=/ /boot/\0" \
"boot_scripts=boot.scr.uimg boot.scr\0" \
"boot_script_dhcp=boot.scr.uimg\0" \