ts72xx: rc4 doesn't boot anymore

[cgagneraud@techworks.ie (Christian Gagneraud)]

Hi all,

I really don't understand what's happenning, nothing has changed on my 
side (same board, same bootloader), rc2 was booting OK, rc3 didn't 
boot unless I pass on the command line the config for half of my 
memory (mem=8M at 0x0 mem=8M at 16M mem=8M at 64M mem=8M at 80M). Now with rc4 
it's even worth, the kernel complains about bad configuration page, 
detects 16MB of memory and ignore any mem= command line params (this 
board has 8 nodes of 8MB each).

Below is the trace of the crash, I've added some debug printk, 
especially concerning the atags (attached is my hack of 
arch/arm/kernel/setup.c and another patch i need to get the board 
booting (I know it's bad))

Unless I'm missing something, the rc2 was booting OK, I'm sure.

Any help greatly appreciate.

Regards,
Chris

<5>Linux version 2.6.32-rc4 (cgagneraud at archeopterix.techworks.local) 
(gcc version 4.3.3 (Sourcery G++ Lite 2009q1-203) ) #15 Wed Oct 14 
00:16:32 IST 2009
CPU: ARM920T [41129200] revision 0 (ARMv4T), cr=40007177
CPU: VIVT data cache, VIVT instruction cache
Machine: Technologic Systems TS-72xx SBC
tags:
c0000100: 0x00000080
c0000104: 0x00000200
c0000108: 0x00000400
c000010c: 0x00000000
c0000110: 0x00000000
c0000114: 0x00000000
c0000118: 0x00000000
c000011c: 0x00000000
c0000120: 0x00000000
c0000124: 0x00000000
c0000128: 0x00000000
c000012c: 0x00000000
c0000130: 0x00000000
c0000134: 0x00000000
c0000138: 0x00000000
c000013c: 0x00000000
c0000140: 0x00000000
c0000144: 0x00000000
c0000148: 0x00000000
c000014c: 0x00000000
c0000150: 0x00000000
<4>Warning: bad configuration page, trying to continue
arm_add_memory: start: 0x0, size: 0x1000000 => bank = { start:0x0 
size:0x1000000 node:0 }
tags:
c001fc70: 0x00000005
c001fc74: 0x54410001
c001fc78: 0x00000001
c001fc7c: 0x00001000
c001fc80: 0x000000FF
c001fc84: 0x00000004
c001fc88: 0x54410002
c001fc8c: 0x01000000
c001fc90: 0x00000000
c001fc94: 0x00000000
c001fc98: 0x00000000
c001fc9c: 0x00000000
c001fca0: 0x00000000
c001fca4: 0x00000000
c001fca8: 0x00000000
c001fcac: 0x00000000
c001fcb0: 0x00000000
c001fcb4: 0x00000000
c001fcb8: 0x00000000
c001fcbc: 0x00000000
c001fcc0: 0x00000000
Memory policy: ECC disabled, Data cache writeback
<7>On node 0 totalpages: 4096
<7>  Normal zone: 32 pages used for memmap
<7>  Normal zone: 0 pages reserved
<7>  Normal zone: 4064 pages, LIFO batch:0
Built 1 zonelists in Zone order, mobility grouping off.  Total pages: 4064
<5>Kernel command line:  debug
<6>PID hash table entries: 64 (order: -4, 256 bytes)
<6>Dentry cache hash table entries: 2048 (order: 1, 8192 bytes)
<6>Inode-cache hash table entries: 1024 (order: 0, 4096 bytes)
<6>Memory: 16MB = 16MB total
<5>Memory: 11988KB available (3636K code, 388K data, 104K init, 0K 
highmem)
<6>Hierarchical RCU implementation.
<6>NR_IRQS:120
<6>VIC @fefb0000: id 0x00041190, vendor 0x41
<6>VIC @fefc0000: id 0x00041190, vendor 0x41
Console: colour dummy device 80x30
<6>console [tty0] enabled
<6>Calibrating delay loop... <1>Unable to handle kernel NULL pointer 
dereference at virtual address 00000040
<1>pgd = c0004000
<1>[00000040] *pgd=00000000
<0>Internal error: Oops: 5 [#1]
<0>last sysfs file:
<d>Modules linked in:
CPU: 0    Not tainted  (2.6.32-rc4 #15)
PC is at update_wall_time+0xa4/0x960
LR is at do_timer+0x24/0x30
pc : [<c005bc54>]    lr : [<c004baa0>]    psr: a00000d3
sp : c03c3e70  ip : c0407f50  fp : 00000000
r10: 0001d9bc  r9 : 41129200  r8 : 00000000
r7 : 3b9aca00  r6 : 00000000  r5 : 3b9aca00  r4 : 00000040
r3 : 00000000  r2 : 00000000  r1 : 00000000  r0 : 00000000
Flags: NzCv  IRQs off  FIQs off  Mode SVC_32  ISA ARM  Segment kernel
Control: 4000717f  Table: 00004000  DAC: 00000017
<0>Process swapper (pid: 0, stack limit = 0xc03c2270)
<0>Stack: (0xc03c3e70 to 0xc03c4000)
<0>3e60:                                     00000000 33300000 
00000000 000200d0
<0>3e80: 00000000 00000000 00000000 00000010 000000d0 00000000 
c0c02630 c0c02628
<0>3ea0: 00000000 c0c08000 a0000053 00000000 00000000 00000000 
c0c00300 c040bec0
<0>3ec0: 00000000 00000000 00000000 00000000 00000000 c03e6a04 
c03c7cd4 c035986c
<0>3ee0: c0359889 ffff8ad1 00000000 fed10fff 00000004 0001d9f0 
41129200 0001d9bc
<0>3f00: 00000000 c004baa0 c0407f78 00002665 fed10fff c0026800 
c03e600c 00002665
<0>3f20: fed10fff c002cca4 c03c6260 00000000 00000000 c00680e4 
c03c9d5c 00000004
<0>3f40: 00000000 c03c8f10 0001d9f0 c0069c7c 00000004 c03d893c 
00000000 c002203c
<0>3f60: ffffffff fefb0001 40000000 c0022ae4 00002000 00000000 
ffff8ad0 ffff8ad0
<0>3f80: c040b384 c03c59c0 c03c8f10 c03c8f10 0001d9f0 41129200 
0001d9bc 00000000
<0>3fa0: 00000000 c03c3fb8 c001c71c c001c738 60000053 ffffffff 
c040b384 c03e5c40
<0>3fc0: c001fc9c c03c5b58 0001d9f0 41129200 0001d9bc c0008a5c 
c0008608 00000000
<0>3fe0: 00000000 c001fca0 00000000 40007175 c03e5f50 00008038 
00000000 00000000
[<c005bc54>] (update_wall_time+0xa4/0x960) from [<c004baa0>] 
(do_timer+0x24/0x30)
[<c004baa0>] (do_timer+0x24/0x30) from [<c0026800>] (timer_tick+0xb4/0xfc)
[<c0026800>] (timer_tick+0xb4/0xfc) from [<c002cca4>] 
(ep93xx_timer_interrupt+0x44/0x6c)
[<c002cca4>] (ep93xx_timer_interrupt+0x44/0x6c) from [<c00680e4>] 
(handle_IRQ_event+0x58/0x128)
[<c00680e4>] (handle_IRQ_event+0x58/0x128) from [<c0069c7c>] 
(handle_level_irq+0x70/0xfc)
[<c0069c7c>] (handle_level_irq+0x70/0xfc) from [<c002203c>] 
(asm_do_IRQ+0x3c/0x84)
[<c002203c>] (asm_do_IRQ+0x3c/0x84) from [<c0022ae4>] 
(__irq_svc+0x24/0xc0)
Exception stack(0xc03c3f70 to 0xc03c3fb8)
3f60:                                     00002000 00000000 ffff8ad0 
ffff8ad0
3f80: c040b384 c03c59c0 c03c8f10 c03c8f10 0001d9f0 41129200 0001d9bc 
00000000
3fa0: 00000000 c03c3fb8 c001c71c c001c738 60000053 ffffffff
[<c0022ae4>] (__irq_svc+0x24/0xc0) from [<c001c738>] 
(calibrate_delay+0x58/0x160)
[<c001c738>] (calibrate_delay+0x58/0x160) from [<c0008a5c>] 
(start_kernel+0x1a8/0x25c)
[<c0008a5c>] (start_kernel+0x1a8/0x25c) from [<00008038>] (0x8038)
<0>Code: e8920006 e59d003c e1a05817 e2804040 (e8940018)
<4>---[ end trace 1b75b31a2719ed1c ]---
<0>Kernel panic - not syncing: Fatal exception in interrupt

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