Le 19/01/2016 21:33, Mark Cave-Ayland a écrit :
On 19/01/16 18:34, Hervé Poussineau wrote:
Le 19/01/2016 19:05, Andreas Färber a écrit :
Am 19.01.2016 um 18:42 schrieb Segher Boessenkool:
On Tue, Jan 19, 2016 at 01:50:13AM +0100, Laurent Vivier wrote:
According to this series (from Hervé):
https://lists.gnu.org/archive/html/qemu-ppc/2015-06/msg00110.htmlRS/6000 7020/40p is a PReP machine.
And according to this page:
https://en.wikipedia.org/wiki/RS/6000#Type_7020RS/6000 7020/40p is PowerPC 601 based.
601 doesn't have much to do with 602. 601 is not fully PowerPC; you do not want to deal with it.
I believe Hervé was using a real firmware from IBM FTP for that one, not OpenBIOS.
Andreas
Yes, I was using the real IBM firmware for my tests. As IBM 7020 was upgradable to 604, real firmware works with 601 and 604 types. Let's say that QEMU emulates an upgraded 7020, by using a 604 cpu by default. As a consequence, I see no problem compiling OpenBIOS for a 604 CPU.
Great! If we go with Segher's suggestion for 64-bit then we end up with this:
32-bit: -mcpu=604 64-bit: -mcpu=970 -mno-altivec
I think you can use "-mcpu=power4" here, this is the old default value for gcc.
Andreas, does this look reasonable to you?
ATB,
Mark.