Hi David,
I am having problems with interrupts. The problem exists both when using
the cgthree console and when using a serial console.
Is it possible to change the kernel to just ignore interrupts from
devices that have not yet installed interrupt handlers?
(I have modified my kernel to have a preset command line to save on
typing).
ok boot vmlinuz -p
Booting from: sd(0,0,0)vmlinuz -p
root on sd0a fstype 4.2
Size: 2675008+0+142756 bytes
Booting Linux...
PROMLIB: Sun Boot Prom Version 0 Revision 0
Linux version 2.6.20.7-p01 (mark@a64) (gcc version 4.0.4) #1 Wed Apr 18 15:30:37 BST 2007
ARCH: SUN4C
TYPE: Sun4c SparcStation 1
Ethernet address: 0:80:f1:0:5:89
Loading sun4c MMU routines
Boot time fixup v1.6. 4/Mar/98 Jakub Jelinek (jj@xxxxxxxxxxxxxx). Patching kernel for sun4c
SUN4C: 79 mmu entries for the kernel
PROM: Built device tree with 12437 bytes of memory.
Built 1 zonelists. Total pages: 9430
Kernel command line: root=/dev/nfs nfsroot=x.x.x.x:/sys-root,rsize=2048,wsize=2048 ip=dhcp init=/sbin/bash.static
PID hash table entries: 256 (order: 8, 1024 bytes)
start_kernel(): bug: interrupts were enabled early
Console: mono PROM 80x34
Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)
Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
Memory: 37628k/40908k available (1780k kernel code, 3312k reserved, 680k data, 140k init, 0k highmem)
Mount-cache hash table entries: 512
NET: Registered protocol family 16
SCSI subsystem initialized
sbus0: Clock 20.0 MHz
dma0: Revision 1
NET: Registered protocol family 2
IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
TCP established hash table entries: 2048 (order: 3, 32768 bytes)
TCP bind hash table entries: 1024 (order: 2, 20480 bytes)
TCP: Hash tables configured (established 2048 bind 1024)
TCP reno registered
io scheduler noop registered
io scheduler anticipatory registered (default)
Console: switching to colour frame buffer device 80x34
/sbus@1,f8000000/cgthree@1,fe000000: cg3 at 1:fe000000
ffec01ec: ttyS0 at MMIO 0xf1000000 (irq = 12) is a zs
Console: ttyS0 (SunZilog zs0)
ffec01ec: ttyS1 at MMIO 0xf1000004 (irq = 12) is a zs
IO device interrupt, irq = 12
PC = f0012e80 NPC = f0012e84 FP=ff0018e0
AIEEE
Kernel panic - not syncing: bogus interrupt received
Press Stop-A (L1-A) to return to the boot prom
IO device interrupt, irq = 12
PC = f00118d4 NPC = f00118d8 FP=ff001690
AIEEE
Kernel panic - not syncing: bogus interrupt received
....
It eventually hangs requiring a powerup reset.
Regards
Mark Fortescue.
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