sata.c 2.6 KB

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  1. // SPDX-License-Identifier: GPL-2.0+
  2. /*
  3. * Copyright (C) 2000-2005, DENX Software Engineering
  4. * Wolfgang Denk <wd@denx.de>
  5. * Copyright (C) Procsys. All rights reserved.
  6. * Mushtaq Khan <mushtaq_k@procsys.com>
  7. * <mushtaqk_921@yahoo.co.in>
  8. * Copyright (C) 2008 Freescale Semiconductor, Inc.
  9. * Dave Liu <daveliu@freescale.com>
  10. */
  11. #include <common.h>
  12. #include <ahci.h>
  13. #include <dm.h>
  14. #include <command.h>
  15. #include <part.h>
  16. #include <sata.h>
  17. #include <dm/device-internal.h>
  18. #include <dm/uclass-internal.h>
  19. static int sata_curr_device = -1;
  20. int sata_remove(int devnum)
  21. {
  22. #ifdef CONFIG_AHCI
  23. struct udevice *dev;
  24. int rc;
  25. rc = uclass_find_device(UCLASS_AHCI, devnum, &dev);
  26. if (!rc && !dev)
  27. rc = uclass_find_first_device(UCLASS_AHCI, &dev);
  28. if (rc || !dev) {
  29. printf("Cannot find SATA device %d (err=%d)\n", devnum, rc);
  30. return CMD_RET_FAILURE;
  31. }
  32. rc = device_remove(dev, DM_REMOVE_NORMAL);
  33. if (rc) {
  34. printf("Cannot remove SATA device '%s' (err=%d)\n", dev->name,
  35. rc);
  36. return CMD_RET_FAILURE;
  37. }
  38. return 0;
  39. #else
  40. return sata_stop();
  41. #endif
  42. }
  43. int sata_probe(int devnum)
  44. {
  45. #ifdef CONFIG_AHCI
  46. struct udevice *dev;
  47. int rc;
  48. rc = uclass_get_device(UCLASS_AHCI, devnum, &dev);
  49. if (rc)
  50. rc = uclass_find_first_device(UCLASS_AHCI, &dev);
  51. if (rc) {
  52. printf("Cannot probe SATA device %d (err=%d)\n", devnum, rc);
  53. return CMD_RET_FAILURE;
  54. }
  55. if (!dev) {
  56. printf("No SATA device found!\n");
  57. return CMD_RET_FAILURE;
  58. }
  59. rc = sata_scan(dev);
  60. if (rc) {
  61. printf("Cannot scan SATA device %d (err=%d)\n", devnum, rc);
  62. return CMD_RET_FAILURE;
  63. }
  64. return 0;
  65. #else
  66. return sata_initialize() < 0 ? CMD_RET_FAILURE : CMD_RET_SUCCESS;
  67. #endif
  68. }
  69. static int do_sata(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  70. {
  71. int rc = 0;
  72. if (argc >= 2) {
  73. int devnum = 0;
  74. if (argc == 3)
  75. devnum = (int)simple_strtoul(argv[2], NULL, 10);
  76. if (!strcmp(argv[1], "stop"))
  77. return sata_remove(devnum);
  78. if (!strcmp(argv[1], "init")) {
  79. if (sata_curr_device != -1) {
  80. rc = sata_remove(devnum);
  81. if (rc)
  82. return rc;
  83. }
  84. return sata_probe(devnum);
  85. }
  86. }
  87. /* If the user has not yet run `sata init`, do it now */
  88. if (sata_curr_device == -1) {
  89. rc = sata_probe(0);
  90. if (rc)
  91. return rc;
  92. sata_curr_device = 0;
  93. }
  94. return blk_common_cmd(argc, argv, IF_TYPE_SATA, &sata_curr_device);
  95. }
  96. U_BOOT_CMD(
  97. sata, 5, 1, do_sata,
  98. "SATA sub system",
  99. "init - init SATA sub system\n"
  100. "sata stop [dev] - disable SATA sub system or device\n"
  101. "sata info - show available SATA devices\n"
  102. "sata device [dev] - show or set current device\n"
  103. "sata part [dev] - print partition table\n"
  104. "sata read addr blk# cnt\n"
  105. "sata write addr blk# cnt"
  106. );