To make it easier to exchange data with paravirtualized barebox during testing, import parts of the VirtIO support in Linux and U-Boot. API basically looks like U-Boot's, but driver boilerplate (like having a virtio bus) is taken from Linux. Headers are the Linux ones with some necessary modifications on top. Quite nifty thing is that Qemu will fix up the device tree appropriately, so just compile in the drivers and it works. The vexpress_defconfig already does this, so this just works: $ qemu-system-arm -m 256M -M virt -nographic \ -kernel ./images/barebox-dt-2nd.img \ -device virtio-rng-device \ -drive if=none,file=/tmp/first.hdimg,format=raw,id=hd0 \ -device virtio-blk-device,drive=hd0 \ Ahmad Fatoum (8): kbuild: add include/uapi to path driver: Don't throw an error on probes that didn't find the device drivers: add support for memory-mapped VirtIO paravirtualization hw_random: add VirtIO RNG driver serial: add basic VirtIO console driver block: add VirtIO block device driver ARM: vexpress: config: update for VirtIO support Documentation: add Documentation on VirtIO for barebox Documentation/user/user-manual.rst | 1 + Documentation/user/virtio.rst | 80 +++++ Makefile | 10 +- arch/arm/configs/vexpress_defconfig | 15 +- drivers/Kconfig | 1 + drivers/Makefile | 1 + drivers/ata/Kconfig | 2 + drivers/base/driver.c | 5 +- drivers/block/Kconfig | 6 + drivers/block/Makefile | 1 + drivers/block/virtio_blk.c | 133 ++++++++ drivers/hw_random/Kconfig | 7 + drivers/hw_random/Makefile | 1 + drivers/hw_random/virtio-rng.c | 120 +++++++ drivers/serial/Kconfig | 8 + drivers/serial/Makefile | 1 + drivers/serial/virtio_console.c | 166 ++++++++++ drivers/virtio/Kconfig | 28 ++ drivers/virtio/Makefile | 3 + drivers/virtio/virtio.c | 347 ++++++++++++++++++++ drivers/virtio/virtio_mmio.c | 465 +++++++++++++++++++++++++++ drivers/virtio/virtio_ring.c | 365 +++++++++++++++++++++ include/linux/typecheck.h | 25 ++ include/linux/virtio.h | 128 ++++++++ include/linux/virtio_byteorder.h | 64 ++++ include/linux/virtio_config.h | 480 ++++++++++++++++++++++++++++ include/linux/virtio_ring.h | 330 +++++++++++++++++++ include/uapi/linux/virtio_blk.h | 203 ++++++++++++ include/uapi/linux/virtio_config.h | 95 ++++++ include/uapi/linux/virtio_console.h | 78 +++++ include/uapi/linux/virtio_ids.h | 58 ++++ include/uapi/linux/virtio_mmio.h | 152 +++++++++ include/uapi/linux/virtio_ring.h | 244 ++++++++++++++ include/uapi/linux/virtio_rng.h | 8 + include/uapi/linux/virtio_types.h | 46 +++ 35 files changed, 3673 insertions(+), 4 deletions(-) create mode 100644 Documentation/user/virtio.rst create mode 100644 drivers/block/Kconfig create mode 100644 drivers/block/virtio_blk.c create mode 100644 drivers/hw_random/virtio-rng.c create mode 100644 drivers/serial/virtio_console.c create mode 100644 drivers/virtio/Kconfig create mode 100644 drivers/virtio/Makefile create mode 100644 drivers/virtio/virtio.c create mode 100644 drivers/virtio/virtio_mmio.c create mode 100644 drivers/virtio/virtio_ring.c create mode 100644 include/linux/typecheck.h create mode 100644 include/linux/virtio.h create mode 100644 include/linux/virtio_byteorder.h create mode 100644 include/linux/virtio_config.h create mode 100644 include/linux/virtio_ring.h create mode 100644 include/uapi/linux/virtio_blk.h create mode 100644 include/uapi/linux/virtio_config.h create mode 100644 include/uapi/linux/virtio_console.h create mode 100644 include/uapi/linux/virtio_ids.h create mode 100644 include/uapi/linux/virtio_mmio.h create mode 100644 include/uapi/linux/virtio_ring.h create mode 100644 include/uapi/linux/virtio_rng.h create mode 100644 include/uapi/linux/virtio_types.h -- 2.30.0 _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox
