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 SCSI 23 bool "Support SCSI controllers" 24 help 25 This enables support for SCSI (Small Computer System Interface), 26 a parallel interface widely used with storage peripherals such as 27 hard drives and optical drives. The SCSI standards define physical 28 interfaces as well as protocols for controlling devices and 29 tranferring data. 30 31config DM_SCSI 32 bool "Support SCSI controllers with driver model" 33 depends on BLK 34 help 35 This option enables the SCSI (Small Computer System Interface) uclass 36 which supports SCSI and SATA HDDs. For every device configuration 37 (IDs/LUNs) a block device is created with RAW read/write and 38 filesystem support. 39 40config BLOCK_CACHE 41 bool "Use block device cache" 42 default n 43 help 44 This option enables a disk-block cache for all block devices. 45 This is most useful when accessing filesystems under U-Boot since 46 it will prevent repeated reads from directory structures and other 47 filesystem data structures. 48 49menu "SATA/SCSI device support" 50 51config SATA_CEVA 52 bool "Ceva Sata controller" 53 depends on AHCI 54 depends on DM_SCSI 55 help 56 This option enables Ceva Sata controller hard IP available on Xilinx 57 ZynqMP. Support up to 2 external devices. Complient with SATA 3.1 and 58 AHCI 1.3 specifications with hot-plug detect feature. 59 60 61config DWC_AHCI 62 bool "Enable Synopsys DWC AHCI driver support" 63 select SCSI_AHCI 64 select PHY 65 depends on DM_SCSI 66 help 67 Enable this driver to support Sata devices through 68 Synopsys DWC AHCI module. 69 70endmenu 71 72config IDE 73 bool "Support IDE controllers" 74 help 75 Enables support for IDE (Integrated Drive Electronics) hard drives. 76 This allows access to raw blocks and filesystems on an IDE drive 77 from U-Boot. See also CMD_IDE which provides an 'ide' command for 78 performing various IDE operations. 79