Kconfig 2.4 KB

12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273
  1. config BLK
  2. bool "Support block devices"
  3. depends on DM
  4. default y if DM_MMC
  5. help
  6. Enable support for block devices, such as SCSI, MMC and USB
  7. flash sticks. These provide a block-level interface which permits
  8. reading, writing and (in some cases) erasing blocks. Block
  9. devices often have a partition table which allows the device to
  10. be partitioned into several areas, called 'partitions' in U-Boot.
  11. A filesystem can be placed in each partition.
  12. config HAVE_BLOCK_DEVICE
  13. bool "Enable Legacy Block Device"
  14. help
  15. Some devices require block support whether or not DM is enabled
  16. config SPL_BLK
  17. bool "Support block devices in SPL"
  18. depends on SPL_DM && BLK
  19. default y
  20. help
  21. Enable support for block devices, such as SCSI, MMC and USB
  22. flash sticks. These provide a block-level interface which permits
  23. reading, writing and (in some cases) erasing blocks. Block
  24. devices often have a partition table which allows the device to
  25. be partitioned into several areas, called 'partitions' in U-Boot.
  26. A filesystem can be placed in each partition.
  27. config TPL_BLK
  28. bool "Support block devices in TPL"
  29. depends on TPL_DM && BLK
  30. default y
  31. help
  32. Enable support for block devices, such as SCSI, MMC and USB
  33. flash sticks. These provide a block-level interface which permits
  34. reading, writing and (in some cases) erasing blocks. Block
  35. devices often have a partition table which allows the device to
  36. be partitioned into several areas, called 'partitions' in U-Boot.
  37. A filesystem can be placed in each partition.
  38. config BLOCK_CACHE
  39. bool "Use block device cache"
  40. depends on BLK
  41. default y
  42. help
  43. This option enables a disk-block cache for all block devices.
  44. This is most useful when accessing filesystems under U-Boot since
  45. it will prevent repeated reads from directory structures and other
  46. filesystem data structures.
  47. config SPL_BLOCK_CACHE
  48. bool "Use block device cache in SPL"
  49. depends on SPL_BLK
  50. default n
  51. help
  52. This option enables the disk-block cache in SPL
  53. config TPL_BLOCK_CACHE
  54. bool "Use block device cache in TPL"
  55. depends on TPL_BLK
  56. default n
  57. help
  58. This option enables the disk-block cache in TPL
  59. config IDE
  60. bool "Support IDE controllers"
  61. select HAVE_BLOCK_DEVICE
  62. help
  63. Enables support for IDE (Integrated Drive Electronics) hard drives.
  64. This allows access to raw blocks and filesystems on an IDE drive
  65. from U-Boot. See also CMD_IDE which provides an 'ide' command for
  66. performing various IDE operations.