the following patch was just integrated into master:
commit 563dc5e980a6e9de9e55619932c96aac16c85632
Author: Nico Huber <[email protected]>
Date: Thu Aug 30 15:36:57 2012 +0200
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 <[email protected]>
Build-Tested: build bot (Jenkins) at Fri Oct 26 15:46:59 2012, giving +1
Reviewed-By: Stefan Reinauer <[email protected]> at Fri Oct 26
19:08:37 2012, giving +2
Reviewed-By: Peter Stuge <[email protected]> at Sat Oct 27 02:52:58 2012, giving +2
See http://review.coreboot.org/1622 for details.
-gerrit
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