Date: Sat, 19 Jun 2010 16:01:32 -0700 (PDT) From: tom armistead <tom.armistead@yahoo.com> To: Nathan Whitehorn <nwhitehorn@freebsd.org> Cc: freebsd-ppc@freebsd.org Subject: Re: IMAC G3 (700Mhz) 7.2 & 8.0 install fails with "fatal kernel trap:" Message-ID: <925747.73385.qm@web58104.mail.re3.yahoo.com>
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=0AThanks -- I've now tried 8.1 RC1 and found it failed in the same way. = =0A=0AThere are no messages from the kernel prior to the fatal kernel trap = message.=0A=0AI did some investigation...=0A=0AThe failure messages display= ed with the 8.1 RC1 install attempt are:=0A=0Afatal kernel trap:=0A=A0 =A0= =A0=A0exception =3D 0x4 (instruction storage trap)=0A=A0 =A0=A0=A0virtual a= ddress =3D 0x59f3e8=0A=A0 =A0=A0=A0srr0 =3D 0x59f3e8=0A=A0 =A0=A0=A0srr1 = =3D 0x8003030=0A=A0 =A0=A0=A0lr =3D 0x5c27bc=0A=A0 =A0=A0=A0curthread =3D0x= 83fb50=0A=A0 =A0=A0=A0pid =3D 0, com =3D=0Apanic: instruction storage trap= =0AUptime: 1s=0A=0AI disassembled the kernel and it looks like the failing = address is in the subroutine moea_bootstrap().=0A=0A 59f3d8: 60 00 0= 0 00 nop=0A 59f3dc: 60 00 00 00 nop=0A 59f3e0: 7d 30 = 83 a6 mtibatu 0,r9=0A 59f3e4: 7c 11 83 a6 mtibatl 0,r0=0A 5= 9f3e8: 4c 00 01 2c isync <<<< failure address=0A 59f3ec= : 7d 38 83 a6 mtdbatu 0,r9=0A 59f3f0: 7c 19 83 a6 mtdb= atl 0,r0=0A=0A=0AAnd I found a previous problem report that looks like the = same issue:=0A=A0=A0=A0=0Ahttp://lists.freebsd.org/pipermail/freebsd-ppc/20= 08-March/002661.html=0A=0AThere was a fix for that issue but it looks like = it doesn't work for the CPU on the 700Mhz iMAC.=0A=0AI think to really solv= e this problem, you have to shut off translation, load the BATs and then re= -enable translation. When I patched in a segment of code to do just that= , the kernel booted and the installer started up. =0A=0A=0A
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