2009/6/23 Arnd Bergmann <arnd@xxxxxxxx>: > On Tuesday 23 June 2009, David Woodhouse wrote: >> And dd on /dev/mem would work, surely? > > Actually, reading from /dev/mem is only valid on real RAM. If the nvram > is part of an IO memory mapping, you have to do mmap()+memcpy() rather > than read(). So dd won't do it, but it's still easy to read from user > space. For "security" reasons pram reserve the region of memory with reserve_mem_region_exclusive()..... > >> I'd definitely recommend making it fixed-endian. Not doing so for JFFS2 >> was a mistake I frequently regretted. > > Right. > > Arnd <>< > -- To unsubscribe from this list: send the line "unsubscribe linux-embedded" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
