• Benjamin Herrenschmidt's avatar
    [PATCH] powerpc: Add OF address parsing code (#2) · d1405b86
    Benjamin Herrenschmidt authored
    Parsing addresses extracted from Open Firmware isn't a simple matter. We
    have various bits of code that try to do it in various place, including
    some heuristics in prom.c that pre-parse addresses at boot and fill
    device-nodes "addrs", but those are dodgy at best and I want to
    deprecate them. So this patch introduces a new set of routines that
    should be capable of parsing most types of addresses and translating
    them into CPU physical addresses. It currently works for things on PCI
    busses and ISA busses and should work on "standard" busses like the root
    bus or the MacIO bus that don't put funky flags in addresses. If you
    have other bus types that do use funky flags, you'll have to add new bus
    type translators, which is fairly easy.
    Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
    Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
    d1405b86
prom.h 4.94 KB