On Fri, 12 Aug 2011, Brad Boyer wrote: > On Fri, Aug 12, 2011 at 10:37:20PM +1000, Finn Thain wrote: > > It is wierd, but I think that the powerbook PMU chip will respond to > > certain CPU exceptions this way. I've seen powerbooks respond to > > initramfs like this before but I don't think I ever found out why. > > The basic idea is that any time the PMU thinks you aren't following the > right communication protocol (including the timing between messages) it > will just shut off because it thinks the OS crashed. So if it is in a > multi-message handshake and something disables interrupts for too long, > the system will just power off.
So the solution would be to load the PMU driver earlier? MacLinux vidaddr: 60000000 _stext: 00001000 bootinfo: 00335000 cpuid: 0000000A sccbase: 50F04000 ABCFGHIJK Linux version 2.6.39-mac (fthain@nippy) (gcc version 4.4.6 (GCC) ) #6 Thu Aug 11 12:37:02 EST 2011 bootconsole [early0] enabled Detected Macintosh model: 72 VIA1 at 50f00000 is a 6522 or clone VIA2 at 50f02000 is a 6522 or clone Apple Macintosh PowerBook 520 initrd: 021c2800 - 02400000 Built 1 zonelists in Zone order, mobility grouping on. Total pages: 9135 Kernel command line: console=tty0 console=ttyS0 root=/dev/ram0 PID hash table entries: 256 (order: -2, 1024 bytes) Dentry cache hash table entries: 8192 (order: 3, 32768 bytes) Inode-cache hash table entries: 4096 (order: 2, 16384 bytes) Memory: 30740k/30740k available (2372k kernel code, 3636k data, 116k init) Killing onboard sonic... Done. Console: colour dummy device 80x25 console [ttyS0] enabled, bootconsole disabled console [ttyS0] enabled, bootconsole disabled Calibrating delay loop... 26.31 BogoMIPS (lpj=131584) pid_max: default: 32768 minimum: 301 Mount-cache hash table entries: 512 devtmpfs: initialized NET: Registered protocol family 16 bio: create slab <bio-0> at 0 NuBus: Scanning NuBus slots. SCSI subsystem initialized NET: Registered protocol family 2 IP route cache hash table entries: 1024 (order: 0, 4096 bytes) TCP established hash table entries: 2048 (order: 2, 16384 bytes) TCP bind hash table entries: 2048 (order: 1, 8192 bytes) TCP: Hash tables configured (established 2048 bind 2048) TCP reno registered UDP hash table entries: 256 (order: 0, 4096 bytes) UDP-Lite hash table entries: 256 (order: 0, 4096 bytes) NET: Registered protocol family 1 RPC: Registered udp transport module. RPC: Registered tcp transport module. RPC: Registered tcp NFSv4.1 backchannel transport module. Trying to unpack rootfs image as initramfs... [machine powers down at this point] Finn -- To UNSUBSCRIBE, email to debian-68k-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/alpine.OSX.2.00.1108131135200.189@ibook.local
