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 <common.h>
   8 #include <blk.h>
   9 #include <command.h>
  10 #include <dm.h>
  11 #include <nvme.h>
  12
  13 static int nvme_curr_dev;
  14
  15 static int do_nvme(struct cmd_tbl *cmdtp, int flag, int argc,
  16                    char *const argv[])
  17 {
  18         int ret;
  19
  20         if (argc == 2) {
  21                 if (strncmp(argv[1], "scan", 4) == 0) {
  22                         ret = nvme_scan_namespace();
  23                         if (ret)
  24                                 return CMD_RET_FAILURE;
  25
  26                         return ret;
  27                 }
  28                 if (strncmp(argv[1], "deta", 4) == 0) {
  29                         struct udevice *udev;
  30
  31                         ret = blk_get_device(UCLASS_NVME, nvme_curr_dev,
  32                                              &udev);
  33                         if (ret < 0)
  34                                 return CMD_RET_FAILURE;
  35
  36                         nvme_print_info(udev);
  37
  38                         return ret;
  39                 }
  40         }
  41
  42         return blk_common_cmd(argc, argv, UCLASS_NVME, &nvme_curr_dev);
  43 }
  44
  45 U_BOOT_CMD(
  46         nvme, 8, 1, do_nvme,
  47         "NVM Express sub-system",
  48         "scan - scan NVMe devices\n"
  49         "nvme detail - show details of current NVMe device\n"
  50         "nvme info - show all available NVMe devices\n"
  51         "nvme device [dev] - show or set current NVMe device\n"
  52         "nvme part [dev] - print partition table of one or all NVMe devices\n"
  53         "nvme read addr blk# cnt - read `cnt' blocks starting at block\n"
  54         "     `blk#' to memory address `addr'\n"
  55         "nvme write addr blk# cnt - write `cnt' blocks starting at block\n"
  56         "     `blk#' from memory address `addr'"
  57 );