scsi.c 1.6 KB

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  1. // SPDX-License-Identifier: GPL-2.0+
  2. /*
  3. * (C) Copyright 2001
  4. * Denis Peter, MPL AG Switzerland
  5. */
  6. /*
  7. * SCSI support.
  8. */
  9. #include <common.h>
  10. #include <blk.h>
  11. #include <command.h>
  12. #include <scsi.h>
  13. static int scsi_curr_dev; /* current device */
  14. /*
  15. * scsi boot command intepreter. Derived from diskboot
  16. */
  17. static int do_scsiboot(struct cmd_tbl *cmdtp, int flag, int argc,
  18. char *const argv[])
  19. {
  20. return common_diskboot(cmdtp, "scsi", argc, argv);
  21. }
  22. /*
  23. * scsi command intepreter
  24. */
  25. static int do_scsi(struct cmd_tbl *cmdtp, int flag, int argc,
  26. char *const argv[])
  27. {
  28. int ret;
  29. if (argc == 2) {
  30. if (strncmp(argv[1], "res", 3) == 0) {
  31. printf("\nReset SCSI\n");
  32. #ifndef CONFIG_DM_SCSI
  33. scsi_bus_reset(NULL);
  34. #endif
  35. ret = scsi_scan(true);
  36. if (ret)
  37. return CMD_RET_FAILURE;
  38. return ret;
  39. }
  40. if (strncmp(argv[1], "scan", 4) == 0) {
  41. ret = scsi_scan(true);
  42. if (ret)
  43. return CMD_RET_FAILURE;
  44. return ret;
  45. }
  46. }
  47. return blk_common_cmd(argc, argv, IF_TYPE_SCSI, &scsi_curr_dev);
  48. }
  49. U_BOOT_CMD(
  50. scsi, 5, 1, do_scsi,
  51. "SCSI sub-system",
  52. "reset - reset SCSI controller\n"
  53. "scsi info - show available SCSI devices\n"
  54. "scsi scan - (re-)scan SCSI bus\n"
  55. "scsi device [dev] - show or set current device\n"
  56. "scsi part [dev] - print partition table of one or all SCSI devices\n"
  57. "scsi read addr blk# cnt - read `cnt' blocks starting at block `blk#'\n"
  58. " to memory address `addr'\n"
  59. "scsi write addr blk# cnt - write `cnt' blocks starting at block\n"
  60. " `blk#' from memory address `addr'"
  61. );
  62. U_BOOT_CMD(
  63. scsiboot, 3, 1, do_scsiboot,
  64. "boot from SCSI device",
  65. "loadAddr dev:part"
  66. );