Re: [Ltib] 2.6.24 for mpc8458amc

[Chip Webb]

Hi Maxime,

I ran into something that looked like this a couple of months ago.
The solution was to re-program the u-boot on my target with a newer version.

I am by no means an expert, but I understand that the interface between u-boot
and linux is (and has been) in flux over the last year or so and that
newer versions of the kernel (at least on my target) would hang the
way you describe if booted from an older version of u-boot.
I suspect that the issue was related to the flattened device tree
being passed to the kernel, but it's beyond my knowledge to do
anything more than speculate on the actual cause.

Most boards seem to have provision for two bootloaders. If yours
has a jumper or switch for selecting this you may want to program
the new u-boot to the alternate page so that the one you have isn't
erased.

Best Regards,

Chip Webb

Stuart Hughes wrote:

Hi Maxime,

At this stage I think you'd probably get more help from the linux-ppc
kernel mailing list.

Regards, Stuart

On Tue, 2008-02-19 at 11:30 +0000, maxime louvel wrote:
  

Thanks,

I haven't been able to build the kernel without LTIB...
I have tried to build it with an embedded compiler but get an internal
assembler error....

regards,
Maxime

On Feb 19, 2008 10:53 AM, Stuart Hughes <address@hidden> wrote:
        Hi Maxime,
        
        This is not really an LTIB question, you'd probably get more
        help on a
        linux-ppc kernel mailing list.
        
        Can you boot this kernel if built outside of LTIB?  If so,
        which cross
        compiler did you use?
        
        Regards, Stuart
        
        
        
        On Tue, 2008-02-19 at 09:46 +0000, maxime louvel wrote:
        > Hi,
        >
        > I am trying to make a 2.6.24 vanilla kernel boot (an work
        fine in a
        > second time) on a mpc8548amc board.
        > I have got the last LTIB version from the public svn and add
        the
        > platform specific stuff from the sources of the current
        kernel running
        > on the cards.
        > What I have basically add is:
        > - a folder mpc8548amc, in the config/platform directory,
        which allow
        > to select the mpc8548amc as the supported platform in the
        first screen
        > of the LTIB installation
        > - add the following files:
        >   - arch/ppc/configs/mpc8548amc_defconfig
        >   - arch/ppc/configs/platforms/85xx/mpc_8548_amc.h and .c
        > - I have used the dts of an another platform (mpc8548cds)
        which seems
        > quite the same, but I haven't got any confirmation of that
        yet.
        >
        > When I am booting the kernel image built by LTIB here is
        what I get:
        >
        > AMC=> dhcp 0x1000000 uImage.amc.2.6.24
        > Speed: 1000, full duplex
        > BOOTP broadcast 1
        > DHCP client bound to address 10.255.255.2
        > Using eTSEC0 device
        > TFTP from server 0.0.0.0; our IP address is 10.255.255.2;
        sending
        > through gateway 10.1.1.1
        > Filename 'uImage.amc.2.6.24'.
        > Load address: 0x1000000
        > Loading: ##############################
        > ###################################
        >
        >
        #################################################################
        >
        >
        #################################################################
        >
        >
        #################################################################
        >
        >
        #################################################################
        >         ###########################
        > done
        > Bytes transferred = 1802102 (1b7f76 hex)
        > AMC=> bootm 0x1000000
        > ## Booting image at 01000000 ...
        >   Image Name:   Linux-2.6.24
        >   Image Type:   PowerPC Linux Kernel Image (gzip compressed)
        >   Data Size:    1802038 Bytes =  1.7 MB
        >   Load Address: 00000000
        >   Entry Point:  00000000
        >   Verifying Checksum ... OK
        >   Uncompressing Kernel Image ... OK
        >
        > No further messages...
        >
        > Does someone has an idea ?
        >
        > thanks,
        > Maxime
        >
        > --
        > Maxime Louvel
        > 0044 7964 5555 80
        > 43 Allen road
        > Whitemore reans
        > WV60AW Wolverhampton
        > United Kingdom
        
        > _______________________________________________
        > LTIB home page: http://bitshrine.org
        >
        > Ltib mailing list
        > address@hidden
        > http://lists.nongnu.org/mailman/listinfo/ltib
        



-- 
Maxime Louvel
0044 7964 5555 80
43 Allen road
Whitemore reans
WV60AW Wolverhampton
United Kingdom
    

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