> There's a /proc/device-tree directory on PPCs that have Open Firmware > (that is not all PPCs, but all supported PowerMacs) that contains the > Open Firmware device-tree. OK, I just took a look, and it seems to be a complete mess there (2.4). I think I will add the Keywest to the list of the _un_detectable adapters. > The CPU itself doesn't have the inX/outX instructions, like most non > x86 CPUs, but there is till the possiblility of having an ISA bus on > some machines, in which case it's available on a southbridge on the > PCI bus. The PowerMacs don't have one though. > > There are some techniques to issue IOs from userland, but those > involve using some syscalls to find the IO base address of a given > PCI bus, then mmap'ing /dev/mem to get access to this IO range, then > re-implementing the kernel IO accessors based on this. This isn't > something I recommend to do unless it cannot be avoided. (XFree is > an example of a userland app that do need that). Thanks for the information. I think I will fix isadump but won't compile it be default on linux-ppc. -- Jean Delvare http://www.ensicaen.ismra.fr/~delvare/
