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It is from steven james's baremetal in linuxbios util.
yhlu seperate common functions from uhci.c to usb.c and create ohci.c to support ohci.
ohci.c mainly cames from kernel 2.4.22 dirvers/usb/host/usb-ohci.c.
it includes several parts
1. UHCI+OHCI--->USB: privide usb init and usb_control_msg and usb_bulk_msg interface
2. USB_SCSI: bulk only device
3. USB_X interface to FILO
other changes in Etherboot
1. Add allot2 and forget2, it will produce the required aligned memory.
todo:
1. EHCI support
yhlu 6/2/2004
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