1config 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 13config AHCI 14 bool "Support SATA controllers with driver model" 15 depends on DM 16 help 17 This enables a uclass for disk controllers in U-Boot. Various driver 18 types can use this, such as AHCI/SATA. It does not provide any standard 19 operations at present. The block device interface has not been converted 20 to driver model. 21 22config SATA 23 bool "Support SATA controllers" 24 help 25 This enables support for SATA (Serial Advanced Technology 26 Attachment), a serial bus standard for connecting to hard drives and 27 other storage devices. 28 29 SATA replaces PATA (originally just ATA), which stands for Parallel AT 30 Attachment, where AT refers to an IBM AT (Advanced Technology) 31 computer released in 1984. 32 33 See also CMD_SATA which provides command-line support. 34 35config SCSI 36 bool "Support SCSI controllers" 37 help 38 This enables support for SCSI (Small Computer System Interface), 39 a parallel interface widely used with storage peripherals such as 40 hard drives and optical drives. The SCSI standards define physical 41 interfaces as well as protocols for controlling devices and 42 tranferring data. 43 44config DM_SCSI 45 bool "Support SCSI controllers with driver model" 46 depends on BLK 47 help 48 This option enables the SCSI (Small Computer System Interface) uclass 49 which supports SCSI and SATA HDDs. For every device configuration 50 (IDs/LUNs) a block device is created with RAW read/write and 51 filesystem support. 52 53config BLOCK_CACHE 54 bool "Use block device cache" 55 default n 56 help 57 This option enables a disk-block cache for all block devices. 58 This is most useful when accessing filesystems under U-Boot since 59 it will prevent repeated reads from directory structures and other 60 filesystem data structures. 61 62menu "SATA/SCSI device support" 63 64config SATA_CEVA 65 bool "Ceva Sata controller" 66 depends on AHCI 67 depends on DM_SCSI 68 help 69 This option enables Ceva Sata controller hard IP available on Xilinx 70 ZynqMP. Support up to 2 external devices. Complient with SATA 3.1 and 71 AHCI 1.3 specifications with hot-plug detect feature. 72 73 74config DWC_AHCI 75 bool "Enable Synopsys DWC AHCI driver support" 76 select SCSI_AHCI 77 select PHY 78 depends on DM_SCSI 79 help 80 Enable this driver to support Sata devices through 81 Synopsys DWC AHCI module. 82 83endmenu 84 85config IDE 86 bool "Support IDE controllers" 87 help 88 Enables support for IDE (Integrated Drive Electronics) hard drives. 89 This allows access to raw blocks and filesystems on an IDE drive 90 from U-Boot. See also CMD_IDE which provides an 'ide' command for 91 performing various IDE operations. 92