Hi,
I noticed the following dilemma when I tried to enable both CONFIG_ETHOC and CONFIG_CMD_CACHE:
The ethoc ethernet driver expects: void flush_dcache(unsigned long start, unsigned long size) while cmd_cache.c expect it to be: void flush_dcache(void)
Grepping around the sources, I found that apart from drivers/net/ethoc.c also drivers/net/altera_tse.c uses flush_dcache with the two ulong parameters. No architecture apart from nios2 seems to provide flush_dcache like this and flush_dcache is not declared in common.h, so my gut feeling is that nios2 and the 2 ethernet drivers should be changed to use for example flush_dcache_range(?) Perhaps cmd_cache.c should also be fixed to use flush_dcache_all()? flush_icache() ofcourse suffer from the same problem.
Stefan