scsi.c 3.4 KB

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  1. /*
  2. * (C) Copyright 2001
  3. * Denis Peter, MPL AG Switzerland
  4. *
  5. * SPDX-License-Identifier: GPL-2.0+
  6. */
  7. /*
  8. * SCSI support.
  9. */
  10. #include <common.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. int do_scsiboot(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
  18. {
  19. return common_diskboot(cmdtp, "scsi", argc, argv);
  20. }
  21. /*
  22. * scsi command intepreter
  23. */
  24. int do_scsi(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
  25. {
  26. switch (argc) {
  27. case 0:
  28. case 1:
  29. return CMD_RET_USAGE;
  30. case 2:
  31. if (strncmp(argv[1], "res", 3) == 0) {
  32. printf("\nReset SCSI\n");
  33. scsi_bus_reset();
  34. scsi_scan(1);
  35. return 0;
  36. }
  37. if (strncmp(argv[1], "inf", 3) == 0) {
  38. blk_list_devices(IF_TYPE_SCSI);
  39. return 0;
  40. }
  41. if (strncmp(argv[1], "dev", 3) == 0) {
  42. if (blk_print_device_num(IF_TYPE_SCSI, scsi_curr_dev)) {
  43. printf("\nno SCSI devices available\n");
  44. return CMD_RET_FAILURE;
  45. }
  46. return 0;
  47. }
  48. if (strncmp(argv[1], "scan", 4) == 0) {
  49. scsi_scan(1);
  50. return 0;
  51. }
  52. if (strncmp(argv[1], "part", 4) == 0) {
  53. if (blk_list_part(IF_TYPE_SCSI))
  54. printf("\nno SCSI devices available\n");
  55. return 0;
  56. }
  57. return CMD_RET_USAGE;
  58. case 3:
  59. if (strncmp(argv[1], "dev", 3) == 0) {
  60. int dev = (int)simple_strtoul(argv[2], NULL, 10);
  61. if (!blk_show_device(IF_TYPE_SCSI, dev)) {
  62. scsi_curr_dev = dev;
  63. printf("... is now current device\n");
  64. } else {
  65. return CMD_RET_FAILURE;
  66. }
  67. return 0;
  68. }
  69. if (strncmp(argv[1], "part", 4) == 0) {
  70. int dev = (int)simple_strtoul(argv[2], NULL, 10);
  71. if (blk_print_part_devnum(IF_TYPE_SCSI, dev)) {
  72. printf("\nSCSI device %d not available\n",
  73. dev);
  74. return CMD_RET_FAILURE;
  75. }
  76. return 0;
  77. }
  78. return CMD_RET_USAGE;
  79. default:
  80. /* at least 4 args */
  81. if (strcmp(argv[1], "read") == 0) {
  82. ulong addr = simple_strtoul(argv[2], NULL, 16);
  83. ulong blk = simple_strtoul(argv[3], NULL, 16);
  84. ulong cnt = simple_strtoul(argv[4], NULL, 16);
  85. ulong n;
  86. printf("\nSCSI read: device %d block # %ld, count %ld ... ",
  87. scsi_curr_dev, blk, cnt);
  88. n = blk_read_devnum(IF_TYPE_SCSI, scsi_curr_dev, blk,
  89. cnt, (ulong *)addr);
  90. printf("%ld blocks read: %s\n", n,
  91. n == cnt ? "OK" : "ERROR");
  92. return 0;
  93. } else if (strcmp(argv[1], "write") == 0) {
  94. ulong addr = simple_strtoul(argv[2], NULL, 16);
  95. ulong blk = simple_strtoul(argv[3], NULL, 16);
  96. ulong cnt = simple_strtoul(argv[4], NULL, 16);
  97. ulong n;
  98. printf("\nSCSI write: device %d block # %ld, count %ld ... ",
  99. scsi_curr_dev, blk, cnt);
  100. n = blk_write_devnum(IF_TYPE_SCSI, scsi_curr_dev, blk,
  101. cnt, (ulong *)addr);
  102. printf("%ld blocks written: %s\n", n,
  103. n == cnt ? "OK" : "ERROR");
  104. return 0;
  105. }
  106. } /* switch */
  107. return CMD_RET_USAGE;
  108. }
  109. U_BOOT_CMD(
  110. scsi, 5, 1, do_scsi,
  111. "SCSI sub-system",
  112. "reset - reset SCSI controller\n"
  113. "scsi info - show available SCSI devices\n"
  114. "scsi scan - (re-)scan SCSI bus\n"
  115. "scsi device [dev] - show or set current device\n"
  116. "scsi part [dev] - print partition table of one or all SCSI devices\n"
  117. "scsi read addr blk# cnt - read `cnt' blocks starting at block `blk#'\n"
  118. " to memory address `addr'\n"
  119. "scsi write addr blk# cnt - write `cnt' blocks starting at block\n"
  120. " `blk#' from memory address `addr'"
  121. );
  122. U_BOOT_CMD(
  123. scsiboot, 3, 1, do_scsiboot,
  124. "boot from SCSI device",
  125. "loadAddr dev:part"
  126. );