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https://github.com/brain-hackers/u-boot-brain
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e8a016b537
All sata based drivers are bind and corresponding block device is created. Based on this find_scsi_device() is able to get back block device based on scsi_curr_dev pointer. intr_scsi() is commented now but it can be replaced by calling find_scsi_device() and scsi_scan(). scsi_dev_desc[] is commented out but common/scsi.c heavily depends on it. That's why CONFIG_SYS_SCSI_MAX_DEVICE is hardcoded to 1 and symbol is reassigned to a block description allocated by uclass. There is only one block description by device now but it doesn't need to be correct when more devices are present. scsi_bind() ensures corresponding block device creation. uclass post_probe (scsi_post_probe()) is doing low level init. SCSI/SATA DM based drivers requires to have 64bit base address as the first entry in platform data structure to setup mmio_base. Signed-off-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Simon Glass <sjg@chromium.org>
43 lines
1.4 KiB
Plaintext
43 lines
1.4 KiB
Plaintext
config BLK
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bool "Support block devices"
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depends on DM
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default y if DM_MMC
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help
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Enable support for block devices, such as SCSI, MMC and USB
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flash sticks. These provide a block-level interface which permits
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reading, writing and (in some cases) erasing blocks. Block
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devices often have a partition table which allows the device to
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be partitioned into several areas, called 'partitions' in U-Boot.
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A filesystem can be placed in each partition.
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config AHCI
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bool "Support SATA controllers with driver model"
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depends on DM
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help
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This enables a uclass for disk controllers in U-Boot. Various driver
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types can use this, such as AHCI/SATA. It does not provide any standard
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operations at present. The block device interface has not been converted
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to driver model.
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config DM_SCSI
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bool "Support SCSI controllers with driver model"
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depends on BLK
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help
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This option enables the SCSI (Small Computer System Interface) uclass
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which supports SCSI and SATA HDDs. For every device configuration
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(IDs/LUNs) a block device is created with RAW read/write and
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filesystem support.
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config BLOCK_CACHE
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bool "Use block device cache"
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default n
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help
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This option enables a disk-block cache for all block devices.
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This is most useful when accessing filesystems under U-Boot since
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it will prevent repeated reads from directory structures and other
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filesystem data structures.
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menu "SATA/SCSI device support"
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endmenu
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