From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:33447) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UXD4Z-0000nK-0S for qemu-devel@nongnu.org; Tue, 30 Apr 2013 12:06:35 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1UXD4U-0000dv-CF for qemu-devel@nongnu.org; Tue, 30 Apr 2013 12:06:30 -0400 Message-ID: <517FEC00.7070506@suse.de> Date: Tue, 30 Apr 2013 18:06:24 +0200 From: Alexander Graf MIME-Version: 1.0 References: <517D2B5B.1020806@web.de> <1367334424-10656-1-git-send-email-chouteau@adacore.com> <517FE217.5000105@suse.de> <517FEA86.3040507@adacore.com> In-Reply-To: <517FEA86.3040507@adacore.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [PATCH] Fix PReP NIP reset value List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Fabien Chouteau Cc: qemu-devel@nongnu.org, blauwirbel@gmail.com, andreas.faerber@web.de, qemu-ppc@nongnu.org, anthony@codemonkey.ws, aurelien@aurel32.net On 04/30/2013 06:00 PM, Fabien Chouteau wrote: > On 04/30/2013 05:24 PM, Alexander Graf wrote: >> On 04/30/2013 05:07 PM, Fabien Chouteau wrote: >>> The value was changed by the "PPC: fix hreset_vector..." patch. >>> >>> Signed-off-by: Fabien Chouteau >>> --- >>> hw/ppc/prep.c | 3 +++ >>> 1 file changed, 3 insertions(+) >>> >>> diff --git a/hw/ppc/prep.c b/hw/ppc/prep.c >>> index cceab3e..2d0c4fe 100644 >>> --- a/hw/ppc/prep.c >>> +++ b/hw/ppc/prep.c >>> @@ -427,6 +427,9 @@ static void ppc_prep_reset(void *opaque) >>> PowerPCCPU *cpu = opaque; >>> >>> cpu_reset(CPU(cpu)); >>> + >>> + /* Reset address */ >>> + cpu->env.nip = 0xfffffffc; >> Why does PREP reset at this vector? Is it architected to that? Does 601 reset to that offset? >> > I don't know why PReP reset here. As I said in the hreset_vector patch, > even if the core manual says that hreset is at 0xfff00100, the value is > in fact board specific. OpenHackWare expects 0xfffffffc as reset > address. Do you have 601e or 601 specs handy? Maybe they have a different reset vector. Maybe OHW is also just wrong ;). Alex