LXR uboot/cmd/virtio.c

   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * Copyright (C) 2018, Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi>
   4 * Copyright (C) 2018, Bin Meng <bmeng.cn@gmail.com>
   5 */
   6
   7#include <common.h>
   8#include <blk.h>
   9#include <command.h>
  10#include <dm.h>
  11#include <virtio_types.h>
  12#include <virtio.h>
  13
  14static int virtio_curr_dev;
  15
  16static int do_virtio(struct cmd_tbl *cmdtp, int flag, int argc,
  17                     char *const argv[])
  18{
  19        if (argc == 2 && !strcmp(argv[1], "scan")) {
  20                /* make sure all virtio devices are enumerated */
  21                virtio_init();
  22
  23                return CMD_RET_SUCCESS;
  24        }
  25
  26        return blk_common_cmd(argc, argv, IF_TYPE_VIRTIO, &virtio_curr_dev);
  27}
  28
  29U_BOOT_CMD(
  30        virtio, 8, 1, do_virtio,
  31        "virtio block devices sub-system",
  32        "scan - initialize virtio bus\n"
  33        "virtio info - show all available virtio block devices\n"
  34        "virtio device [dev] - show or set current virtio block device\n"
  35        "virtio part [dev] - print partition table of one or all virtio block devices\n"
  36        "virtio read addr blk# cnt - read `cnt' blocks starting at block\n"
  37        "     `blk#' to memory address `addr'\n"
  38        "virtio write addr blk# cnt - write `cnt' blocks starting at block\n"
  39        "     `blk#' from memory address `addr'"
  40);
  41