cmd/nvme.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (C) 2017 NXP Semiconductors
   4  * Copyright (C) 2017 Bin Meng <bmeng.cn@gmail.com>
   5  */
   6
   7 #include <blk.h>
   8 #include <command.h>
   9 #include <dm.h>
  10 #include <nvme.h>
  11
  12 static int nvme_curr_dev;
  13
  14 static int do_nvme(struct cmd_tbl *cmdtp, int flag, int argc,
  15                    char *const argv[])
  16 {
  17         int ret;
  18
  19         if (argc == 2) {
  20                 if (strncmp(argv[1], "scan", 4) == 0) {
  21                         ret = nvme_scan_namespace();
  22                         if (ret)
  23                                 return CMD_RET_FAILURE;
  24
  25                         return ret;
  26                 }
  27                 if (strncmp(argv[1], "deta", 4) == 0) {
  28                         struct udevice *udev;
  29
  30                         ret = blk_get_device(UCLASS_NVME, nvme_curr_dev,
  31                                              &udev);
  32                         if (ret < 0)
  33                                 return CMD_RET_FAILURE;
  34
  35                         nvme_print_info(udev);
  36
  37                         return ret;
  38                 }
  39         }
  40
  41         return blk_common_cmd(argc, argv, UCLASS_NVME, &nvme_curr_dev);
  42 }
  43
  44 U_BOOT_CMD(
  45         nvme, 8, 1, do_nvme,
  46         "NVM Express sub-system",
  47         "scan - scan NVMe devices\n"
  48         "nvme detail - show details of current NVMe device\n"
  49         "nvme info - show all available NVMe devices\n"
  50         "nvme device [dev] - show or set current NVMe device\n"
  51         "nvme part [dev] - print partition table of one or all NVMe devices\n"
  52         "nvme read addr blk# cnt - read `cnt' blocks starting at block\n"
  53         "     `blk#' to memory address `addr'\n"
  54         "nvme write addr blk# cnt - write `cnt' blocks starting at block\n"
  55         "     `blk#' from memory address `addr'"
  56 );