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>

1 files changed, 48 insertions, 0 deletions

diff --git a/payloads/libpayload/Config.in b/payloads/libpayload/Config.in
index 0ce4ae539f..821475b8c4 100644
--- a/payloads/libpayload/Config.in
+++ b/payloads/libpayload/Config.in
@@ -242,6 +242,54 @@ config SPEAKER
 	bool "Support for PC speaker"
 	default y
 
+config STORAGE
+	bool "Support for storage devices"
+	default y
+	help
+	  Select this option if you want support for storage devices (like
+	  hard drives, memory sticks or optical drives).
+
+config STORAGE_64BIT_LBA
+	bool "Use 64-bit integers to address sectors"
+	depends on STORAGE
+	default n
+	help
+	  If this is selected, sectors will be addressed by an 64-bit integer.
+	  Select this to support LBA-48 for ATA drives.
+
+config STORAGE_ATA
+	bool "Support ATA drives (i.e. hard drives)"
+	depends on STORAGE
+	default y
+	help
+	  Select this option if you want support for ATA storage devices
+	  (i.e. hard drives).
+
+config STORAGE_ATAPI
+	bool "Support ATAPI drives (i.e. optical drives)"
+	depends on STORAGE
+	default y
+	select STORAGE_ATA
+	help
+	  Select this option if you want support for ATAPI storage devices
+	  (i.e. optical drives like CD or DVD drives).
+
+config STORAGE_AHCI
+	bool "Support for AHCI host controllers"
+	depends on STORAGE && (STORAGE_ATA || STORAGE_ATAPI) && PCI
+	default y
+	help
+	  Select this option if you want support for SATA controllers in
+	  AHCI mode.
+
+config STORAGE_AHCI_ONLY_TESTED
+	bool "Only enable tested controllers"
+	depends on STORAGE_AHCI
+	default y
+	help
+	  If this option is selected only AHCI controllers which are known
+	  to work will be used.
+
 config USB
 	bool "USB Support"
 	default n