From: Tuomas Tynkkynen tuomas.tynkkynen@iki.fi
Add 'virtio' command in U-Boot command line.
Signed-off-by: Tuomas Tynkkynen tuomas.tynkkynen@iki.fi Signed-off-by: Bin Meng bmeng.cn@gmail.com Reviewed-by: Simon Glass sjg@chromium.org ---
Changes in v2: None
cmd/Kconfig | 7 +++++++ cmd/Makefile | 1 + cmd/virtio.c | 38 ++++++++++++++++++++++++++++++++++++++ 3 files changed, 46 insertions(+) create mode 100644 cmd/virtio.c
diff --git a/cmd/Kconfig b/cmd/Kconfig index 7ed3c9c..2fbdb17 100644 --- a/cmd/Kconfig +++ b/cmd/Kconfig @@ -1065,6 +1065,13 @@ config CMD_USB_MASS_STORAGE help USB mass storage support
+config CMD_VIRTIO + bool "virtio" + depends on VIRTIO + default y if VIRTIO + help + VirtIO block device support + config CMD_AXI bool "axi" depends on AXI diff --git a/cmd/Makefile b/cmd/Makefile index d9cdaf6..2e27514 100644 --- a/cmd/Makefile +++ b/cmd/Makefile @@ -136,6 +136,7 @@ obj-$(CONFIG_CMD_UBI) += ubi.o obj-$(CONFIG_CMD_UBIFS) += ubifs.o obj-$(CONFIG_CMD_UNIVERSE) += universe.o obj-$(CONFIG_CMD_UNZIP) += unzip.o +obj-$(CONFIG_CMD_VIRTIO) += virtio.o obj-$(CONFIG_CMD_LZMADEC) += lzmadec.o
obj-$(CONFIG_CMD_USB) += usb.o disk.o diff --git a/cmd/virtio.c b/cmd/virtio.c new file mode 100644 index 0000000..b7082bc --- /dev/null +++ b/cmd/virtio.c @@ -0,0 +1,38 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2018, Tuomas Tynkkynen tuomas.tynkkynen@iki.fi + * Copyright (C) 2018, Bin Meng bmeng.cn@gmail.com + */ + +#include <common.h> +#include <command.h> +#include <dm.h> +#include <virtio_types.h> +#include <virtio.h> + +static int virtio_curr_dev; + +static int do_virtio(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) +{ + if (argc == 2 && !strcmp(argv[1], "scan")) { + /* make sure all virtio devices are enumerated */ + virtio_init(); + + return CMD_RET_SUCCESS; + } + + return blk_common_cmd(argc, argv, IF_TYPE_VIRTIO, &virtio_curr_dev); +} + +U_BOOT_CMD( + virtio, 8, 1, do_virtio, + "virtio block devices sub-system", + "scan - initialize virtio bus\n" + "virtio info - show all available virtio block devices\n" + "virtio device [dev] - show or set current virtio block device\n" + "virtio part [dev] - print partition table of one or all virtio block devices\n" + "virtio read addr blk# cnt - read `cnt' blocks starting at block\n" + " `blk#' to memory address `addr'\n" + "virtio write addr blk# cnt - write `cnt' blocks starting at block\n" + " `blk#' from memory address `addr'" +);