leandrof/u-boot
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

distro_bootcmd: refactor virtio to support PCI block devices

Browse Source 
Starting libvirt v5.3.0 with QEMU 4.0.0 use of PCI is automatic
and thus storage is connected via PCI, which is not visible to
U-Boot out-of-the-box.

Refactor to do "pci enum" followed by "virtio scan" to see PCI
connected storage, and allow bootloader to load kernel and
initramfs images.

Tested with Fedora/RISCV using releases: libvirt 5.4.0 & 5.5.0,
QEMU 4.0.0 and U-Boot 2019.07 RC4.

Signed-off-by: David Abdurachmanov <david.abdurachmanov@sifive.com>
This commit is contained in:
David Abdurachmanov 2019-07-22 11:38:11 +03:00 committed by Tom Rini
parent 26557d1025
commit f0ebcf8c17
1 changed files with 21 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

27
include/config_distro_bootcmd.h
View File

@ -254,11 +254,11 @@
#endif
#if defined(CONFIG_DM_PCI)
#define BOOTENV_RUN_NET_PCI_ENUM "run boot_net_pci_enum; "
#define BOOTENV_RUN_PCI_ENUM "run boot_pci_enum; "
#define BOOTENV_SHARED_PCI \
"boot_net_pci_enum=pci enum\0"
"boot_pci_enum=pci enum\0"
#else
#define BOOTENV_RUN_NET_PCI_ENUM
#define BOOTENV_RUN_PCI_ENUM
#define BOOTENV_SHARED_PCI
#endif
@ -281,10 +281,24 @@
#endif
#ifdef CONFIG_CMD_VIRTIO
#define BOOTENV_SHARED_VIRTIO BOOTENV_SHARED_BLKDEV(virtio)
#define BOOTENV_RUN_VIRTIO_INIT "run virtio_init; "
#define BOOTENV_SET_VIRTIO_NEED_INIT "virtio_need_init=; "
#define BOOTENV_SHARED_VIRTIO \
"virtio_init=" \
"if ${virtio_need_init}; then " \
"virtio_need_init=false; " \
"virtio scan; " \
"fi\0" \
\
"virtio_boot=" \
BOOTENV_RUN_PCI_ENUM \
BOOTENV_RUN_VIRTIO_INIT \
BOOTENV_SHARED_BLKDEV_BODY(virtio)
#define BOOTENV_DEV_VIRTIO BOOTENV_DEV_BLKDEV
#define BOOTENV_DEV_NAME_VIRTIO BOOTENV_DEV_NAME_BLKDEV
#else
#define BOOTENV_RUN_VIRTIO_INIT
#define BOOTENV_SET_VIRTIO_NEED_INIT
#define BOOTENV_SHARED_VIRTIO
#define BOOTENV_DEV_VIRTIO \
BOOT_TARGET_DEVICES_references_VIRTIO_without_CONFIG_CMD_VIRTIO
@ -350,7 +364,7 @@
#define BOOTENV_DEV_DHCP(devtypeu, devtypel, instance) \
"bootcmd_dhcp=" \
BOOTENV_RUN_NET_USB_START \
BOOTENV_RUN_NET_PCI_ENUM \
BOOTENV_RUN_PCI_ENUM \
"if dhcp ${scriptaddr} ${boot_script_dhcp}; then " \
"source ${scriptaddr}; " \
"fi;" \
@ -369,7 +383,7 @@
#define BOOTENV_DEV_PXE(devtypeu, devtypel, instance) \
"bootcmd_pxe=" \
BOOTENV_RUN_NET_USB_START \
BOOTENV_RUN_NET_PCI_ENUM \
BOOTENV_RUN_PCI_ENUM \
"dhcp; " \
"if pxe get; then " \
"pxe boot; " \
@ -465,6 +479,7 @@
"distro_bootcmd=" BOOTENV_SET_SCSI_NEED_INIT \
BOOTENV_SET_NVME_NEED_INIT \
BOOTENV_SET_IDE_NEED_INIT \
BOOTENV_SET_VIRTIO_NEED_INIT \
"for target in ${boot_targets}; do " \
"run bootcmd_${target}; " \
"done\0"