Michael Brian Willis wrote: > Hello, > > I am using an MPC8540 based embedded system with a Compact Flash card in > true IDE mode. The Compact Flash card is directly connected to the > MPC8540 bus without the use of a pcmcia adapter. > > The Compact Flash card is being initialized correctly using the U-boot > boot-loader and is working properly as an ide device in U-boot. However > I cannot get linux to recognize the ide device. > > I have tried several different linux config options and have tried > passing kernel command line options as advised in the > Documentation/ide.txt help file. However I have not been able to get the > kernel to recognize my ide device. > > Does anybody know if I can use the generic linux ide drivers? Or will I > need to modify/write my own driver for this type of setup? > Here's what I use:
http://marc.info/?l=linux-kernel&m=113877891224982&w=2 Please note that if you're using a kernel newer than 2.6.18, the _insw() and _outsw() calls no longer exist, so you'll need to replace them. Here's how I modified Kumar's functions. Not necessarily the right way, but it seems to work: /* xxx: use standard outsw, insw when byte lanes swapped */ static void cfide_outsw(unsigned long port, void *addr, u32 count) { u16 *tmp = addr; while (count--) out_le16((u16 *)port, *tmp++); } static void cfide_insw(unsigned long port, void *addr, u32 count) { u16 *tmp = addr; while (count--) *tmp++ = in_le16((u16 *)port); } regards, Ben _______________________________________________ Linuxppc-embedded mailing list [email protected] https://ozlabs.org/mailman/listinfo/linuxppc-embedded
