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