libpayload: New AHCI, ATA and ATAPI drivers
This adds a new interface for storage devices. A driver for ATA and ATAPI drives on AHCI host controllers comes along. The interface is very simple and was designed to match FILO's needs. It consists of three functions: void storage_initialize(void); Initializes controllers. Should be called once at startup. storage_poll_t storage_probe(size_t dev_num); with typedef enum { POLL_NO_DEVICE = -2, POLL_ERROR = -1, POLL_NO_MEDIUM = 0, POLL_MEDIUM_PRESENT = 1, } storage_poll_t; Looks for a drive with number dev_num (drives are counted from zero) and polls for a medium in the drive if appropriate. int storage_read_blocks512(size_t dev_num, u64 start, size_t count, unsigned char *buf); Reads count blocks of 512 bytes from block start of drive dev_num into buf. Change-Id: I1c85796b7f8e379ff3817a61b1837636b57e182b Signed-off-by: Nico Huber <nico.huber@secunet.com> Reviewed-on: http://review.coreboot.org/1622 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Reviewed-by: Peter Stuge <peter@stuge.se>
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@@ -242,6 +242,54 @@ config SPEAKER
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bool "Support for PC speaker"
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default y
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config STORAGE
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bool "Support for storage devices"
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default y
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help
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Select this option if you want support for storage devices (like
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hard drives, memory sticks or optical drives).
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config STORAGE_64BIT_LBA
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bool "Use 64-bit integers to address sectors"
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depends on STORAGE
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default n
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help
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If this is selected, sectors will be addressed by an 64-bit integer.
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Select this to support LBA-48 for ATA drives.
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config STORAGE_ATA
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bool "Support ATA drives (i.e. hard drives)"
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depends on STORAGE
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default y
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help
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Select this option if you want support for ATA storage devices
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(i.e. hard drives).
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config STORAGE_ATAPI
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bool "Support ATAPI drives (i.e. optical drives)"
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depends on STORAGE
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default y
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select STORAGE_ATA
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help
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Select this option if you want support for ATAPI storage devices
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(i.e. optical drives like CD or DVD drives).
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config STORAGE_AHCI
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bool "Support for AHCI host controllers"
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depends on STORAGE && (STORAGE_ATA || STORAGE_ATAPI) && PCI
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default y
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help
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Select this option if you want support for SATA controllers in
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AHCI mode.
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config STORAGE_AHCI_ONLY_TESTED
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bool "Only enable tested controllers"
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depends on STORAGE_AHCI
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default y
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help
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If this option is selected only AHCI controllers which are known
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to work will be used.
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config USB
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bool "USB Support"
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default n
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