RE: Still not having success with SM P4DPE

[steven james]

Greetings,

Possibly both :-)
First, try:
strip eepro100.elf
objcopy -R .note -R .comment eepro100.elf eepro100.strip

That should shrink it a bit. If that isn't enough, you can probably
squeeze a few more bytes out of linuxbios.strip by adjusting
ROM_IMAGE_SIZE in the mainboard directory's Config file. Unfortunatly the
build process currently faces a sort of chicken and egg problem. The
resolution is to use that variable to pick a size. Too small and the build
will fail, too large and you get null padding inside the image (which
can't be cut out since that would screw up jmp offsets.

Between those two things, you should be able to get the two pieces to fit
neatly into the boot block.

G'day,
sjames

On Fri, 11 Apr 2003, Atherton, Stephen wrote:
> Linuxbios.strip is 49152 bytes, and eepro100.elf is 22368.  So that gives a
> total of 71520...larger than 65536.  So one of them is too big.  Any idea
> which?
>
> -Steve
>
> -----Original Message-----
> From: steven james
> To: Atherton, Stephen
> Cc: '[e-mail]'
> Sent: 4/11/03 9:25 AM
> Subject: Re: Still not having success with SM P4DPE
>
> Greetings,
>
> It looks like the fallback image is being built wrong.
>
> This can be hacked together manually. linuxbios.strip should be the
> actual
> LinuxBIOS code. The objective is to assemble a 64K (exactly) block
> containing:
> etherboot
> null padding (can be generated with dd if=/dev/zero)
> linuxbios.strip.
>
> I just use calctool to figure out how much padding to use and
> cat eepro100.elf pad linuxbios.strip >fallback.bin
>
> the 64K fallback.bin can then be appended to the primary image to get
> the
> full rom image.
>
> That's a little ugly, but it should get the job done.
>
> Just as a final verification, in linuxbios.map, ZKERNEL_START for the
> fallback image should be 0xffff0000. That is whjere it will look for the
> fallback etherboot. Also, it will ljmp to ZKERNEL_START-8 to transfer
> control to the primary image. I'm slowly trying to disentangle that on
> the
> boards I have. Unfortunatly, I don't have a P4DPE.
>
> G'day,
> sjames
>
> On Fri, 11 Apr 2003, Atherton, Stephen wrote:
> > Ron and James, thanks for clueing me in on the fallback image stuff.
>
> I'm
> > still not quite doing something right though, it seems.
> >
> > My config files are below.  I based these on the samples in
> > mainboard/supermicro/p4dpe.  The fallback image is 81k and contains
>
> the
> > etherboot payload...this doesn't seem right to me but I don't know
>
> what else
> > to do.  If I don't specify the etherboot payload, it tries to use
>
> vmlinux
> > which is much, much bigger.
> >
> > So I run the config script on both files, then go to the fallback/ and
> > primary/ directories and run make, and I get a primary romimage of
>
> 458752
> > bytes and a fallback image of 81920 bytes.  That doesn't seem right.
>
> What
> > am I doing wrong?  Oh and though I was doubtful, I did do a "cat
> > primary/romimage fallback/romimage > finalimage" and burned the final
>
> image.
> > Also, from the looks of the makeprocess my two image files are
>
> basically the
> > same binary stuff but one has a lot of null padding.  They both
>
> contain the
> > eepro100 elf image and linuxbios.rom...
> >
> > Anyone see what is wrong with this picture?
> >
> > -Steve
> >
> > fallback.config --------------------------------------------
> >
> > target ./fallback
> > mainboard supermicro/p4dpe
> > option USE_FALLBACK_IMAGE=1
> > option ROM_SIZE=524288
> > option ROM_IMAGE_SIZE=49152
> > option SERIAL_CONSOLE=1
> > option TTYS0_BAUD=9600
> > option TTYS0_BASE=0x3f8
> > option TTYS0_LCS=0x3
> > option DEFAULT_CONSOLE_LOGLEVEL=9
> > option MAXIMUM_CONSOLE_LOGLEVEL=6
> > option USE_ELF_BOOT=1
> > option USE_GENERIC_ROM=1
> > payload ../eepro100.elf
> > option CPU_CLOCK_MULTIPLIER=XEON_X8
> > option MAINBOARD_POWER_ON_AFTER_POWER_FAIL=MAINBOARD_POWER_ON
> >
> > primary.config --------------------------------------------------
> >
> > target primary
> > mainboard supermicro/p4dpe
> > linux /usr/src/linux-2.4.18-14
> > commandline root=/dev/hda2 console=ttyS0,9600 single
> > option USE_FALLBACK_IMAGE=0
> > option ROM_SIZE=524288
> > option ROM_IMAGE_SIZE=49152
> > option SERIAL_CONSOLE=1
> > option TTYS0_BAUD=9600
> > option TTYS0_BASE=0x3f8
> > option TTYS0_LCS=0x3
> > option DEFAULT_CONSOLE_LOGLEVEL=9
> > option MAXIMUM_CONSOLE_LOGLEVEL=8
> > option USE_ELF_BOOT=1
> > option BOOT_IDE=1
> > payload ../eepro100.elf
> > option CPU_CLOCK_MULTIPLIER=XEON_X8
> > option MAINBOARD_POWER_ON_AFTER_POWER_FAIL=MAINBOARD_POWER_ON