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The attached patch changes redboot's fs/ide.c so that it first checks the status of the BSY bit to be 0 before looking at any of the other bits. Per the ATA rev. 6 spec i have: 7.3.3 & 7.15.3 Access restrictions (Alternate status register and status register) When the BSY bit is set to one, the other bits in this register shall not be used. The contents of this register are not valid while the device is in Sleep mode. This was causing a detection failure on a Compact Flash card in "True ATA" mode on one of our targets. -- Andrew Dyer | adyer@righthandtech.com Sr. Engineer | (630) 238-0789 RightHand Technologies | (630) 238-0469 (fax) 735 N. Edgewood Ave. | Suite D | Wood Dale, IL 60191-1261 | USA |
Attachment:
ecos-ide-patch.txt
Description: ecos-ide-patch.txt
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