[PATCH 0/4] fs: Add 9P filesystem support over virtio

[Kuan-Wei Chiu]

Add 9P network filesystem support to U-Boot.

It allows U-Boot to directly mount host directories in virtualization
environments via virtio.

The functionality has been verified on qemu arm64 by successfully
loading a Linux kernel image and an initramfs image via 9P, and booting
to the Linux shell.

To test with QEMU:
  -fsdev local,id=fsdev0,path=/path/to/host/dir,security_model=none \
  -device virtio-9p-device,fsdev=fsdev0,mount_tag=rootfs

U-Boot usage:
  => virtio scan
  => ls 9p - /
  => load 9p - $kernel_addr_r /Image
  => load 9p - $ramdisk_addr_r /initramfs.cpio
  => booti $kernel_addr_r $ramdisk_addr_r:$filesize $fdtcontroladdr

Kuan-Wei Chiu (4):
  net: 9p: Add 9P2000 protocol support
  fs: 9p: Add 9P filesystem support
  virtio: 9p: Add 9P transport driver
  MAINTAINERS: Add entry for 9PFS

 MAINTAINERS                    |   8 +
 drivers/virtio/Kconfig         |   7 +
 drivers/virtio/Makefile        |   1 +
 drivers/virtio/virtio-uclass.c |   1 +
 drivers/virtio/virtio_9p.c     |  75 +++++++++
 fs/9p/9p.c                     | 137 +++++++++++++++++
 fs/9p/Kconfig                  |   8 +
 fs/9p/Makefile                 |   5 +
 fs/Kconfig                     |   2 +
 fs/Makefile                    |   1 +
 fs/fs.c                        |  35 +++++
 include/9p.h                   |  82 ++++++++++
 include/fs.h                   |   1 +
 include/virtio.h               |   4 +-
 net/9p/Kconfig                 |   5 +
 net/9p/Makefile                |   5 +
 net/9p/client.c                | 272 +++++++++++++++++++++++++++++++++
 net/Kconfig                    |   2 +
 net/Makefile                   |   1 +
 19 files changed, 651 insertions(+), 1 deletion(-)
 create mode 100644 drivers/virtio/virtio_9p.c
 create mode 100644 fs/9p/9p.c
 create mode 100644 fs/9p/Kconfig
 create mode 100644 fs/9p/Makefile
 create mode 100644 include/9p.h
 create mode 100644 net/9p/Kconfig
 create mode 100644 net/9p/Makefile
 create mode 100644 net/9p/client.c

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2.55.0.rc2.803.g1fd1e6609c-goog