Re: panic: pmap_map_chunk: no L2 table for VA 0xc0400000

[Donald T Hayford <don%donhayford.com@localhost>]

moonchildren wrote:
> Don,
>
> First I would like to thank you for the excellent explanation about 
> how to put NetBSD on NSLU2.
> I have followed your instructions to the letter.
>
> One thing that I was missing was the building of the tools  I have 
> done this with "./build.sh -u -m evbarm -a armeb tools"
> But after a days work which I enjoyed  I got nothing but  a error  
> about L2  ?
>
> I don't know what this means do you have any idea what went wrong or 
> even better do you have the solution?
>
> RedBoot(tm) bootstrap and debug environment 
> [ROMRAM]                                                                                     
>
> Red Hat certified release, version 1.92 - built 15:16:07, Feb  3 
> 2004                                                                   
>                                                                                                                                         
>
> Platform: IXDP425 Development Platform 
> (XScale)                                                                                          
>
> Copyright (C) 2000, 2001, 2002, Red Hat, 
> Inc.                                                                                            
>
>                                                                                                                                         
>
> RAM: 0x00000000-0x02000000, 0x000723a0-0x01ff3000 
> available                                                                              
>
> FLASH: 0x50000000 - 0x50800000, 64 blocks of 0x00020000 bytes 
> each.                                                                     
> == Executing boot script in 2.000 seconds - enter ^C to 
> abort                                                                            
>
> ^C                                                                                                                                       
>
> RedBoot> ip_address -l 172.16.1.117 -h 
> 172.16.1.1                                                                                        
>
> IP: 172.16.1.117/255.255.255.0, Gateway: 
> 192.168.0.1                                                                                     
>
> Default server: 172.16.1.1, DNS server IP: 
> 0.0.0.0                                                                                       
>
> RedBoot> load -r -b 0x200000 
> nslu2/netbsd-NSLU2_INSTALL.bin                                                                              
>
> Using default protocol 
> (TFTP)                                                                                                            
>
> Raw file loaded 0x00200000-0x007bba03, assumed entry at 
> 0x00200000                                                                       
>
> RedBoot> 
> g                                                                                                                               
>
> panic: pmap_map_chunk: no L2 table for VA 0xc0400000 
> Kind Regards,
>
> Rene van der Meer   
If you:
$ grep -r pmap_map_chunk * | grep "L2 table"
arch/arm/arm32/pmap.c: * of the kernel L2 tables during bootstrap, so 
that pmap_map_chunk() can
arch/arm/arm32/pmap.c:                  panic("pmap_map_chunk: no L2 
table for VA 0x%08lx", va);
arch/arm/arm32/pmap.c:                  panic("pmap_map_chunk: can't 
find L2 table for VA"
pmap_chunk:arch/arm/arm32/pmap.c: * of the kernel L2 tables during 
bootstrap, so that pmap_map_chunk() can
pmap_chunk:arch/arm/arm32/pmap.c:                       
panic("pmap_map_chunk: no L2 table for VA 0x%08lx", va);
pmap_chunk:arch/arm/arm32/pmap.c:                       
panic("pmap_map_chunk: can't find L2 table for VA"

So it's probably in the above file that the failing call is made.  It 
seems unlikely that there is something wrong with the kernel file, so 
the most likely problem is that something didn't get built right.  I 
don't think you should be using the -u switch when building tools, but 
whether that is the problem remains to be seen.

I'm not sure which instructions you were following, but the process that 
seems to work best can be found at:
http://wiki.netbsd.se/How_to_install_NetBSD_on_the_Linksys_NSLU2_%28Slug%29_without_a_serial_port%2C_using_NFS_and_telnet
If you have a serial port installed, you can ignore the telnet stuff and 
just use your serial port to login.  Skip down to the bottom if you want 
to use the installer rather than go the NFS route.  Try the above link 
and let me know.  If you were already using that procedure, try it again 
(you may want to consider starting from scratch), then let me know.

I recommend that in the future you address your questions/comments to 
the NetBSD arm mailing list, which I've included on this email.  I'll 
get a copy either way, but if you go through the mailing list, you'll 
likely get an answer from somebody that knows better than me why you're 
having this problem.

Regards, Don