vmlinx and ppcboot

vmlinx and ppcboot

[Xiaogeng (Shawn) Jin]

If I has ppcboot working and has a vmlinux.gz, do I need any other
working boot code from the kernel tree? I mean, if my making a linux
kernel image 'make zImage' fails at the last step (building a zvmlinux),
is the vmlinux.gz image built valid for ppcboot to boot the kernel?

Thanks.

- Shawn.


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Re: vmlinx and ppcboot

[Wolfgang Denk]

In message <3E1F5FD6.4080107@redswitch.com> you wrote:
>
> If I has ppcboot working and has a vmlinux.gz, do I need any other
> working boot code from the kernel tree? I mean, if my making a linux

No.

> kernel image 'make zImage' fails at the last step (building a zvmlinux),
> is the vmlinux.gz image built valid for ppcboot to boot the kernel?

No.

PPCBoot does not accept a vmlinux.gz image.  It  requieres  an  image
created by the mkimage tool. See the README that comes with PPCBoot.

Best regards,

Wolfgang Denk

--
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd@denx.de
Even if you aren't in doubt, consider the mental welfare of the  per-
son who has to maintain the code after you, and who will probably put
parens in the wrong place.          - Larry Wall in the perl man page

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Re: vmlinx and ppcboot

[Wolfgang Denk]

In message <3E1F6BCB.3070107@redswitch.com> you wrote:
>
> Sorry for not stating clearly. The image I refered to is the image made
> from vmlinux.gz by the mkimage tool.

You mentioned that "'make zImage' fails at the last step (building  a
zvmlinux)" which has nothing to do with PPCBoot.

Please try to specify your problem  again,  more  clearly,  with  all
details  like  the commands you enter and the error messages that are
printed.


Best regards,

Wolfgang Denk

--
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd@denx.de
"Unix is simple, but it takes a genius to understand the simplicity."
					             - Dennis Ritchie

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Re: vmlinx and ppcboot

[Xiaogeng (Shawn) Jin]

> Please try to specify your problem  again,  more  clearly,  with  all
> details  like  the commands you enter and the error messages that are
> printed.
After 'make zImage', here comes the error message.

ppc_8xx-ld -T ../ld.script -Ttext 0x00180000 -Bstatic -o zvmlinux head.o
../comm
on/relocate.o  misc-embedded.o ../common/misc-common.o
../common/string.o ../com
mon/util.o embed_config.o m8xx_tty.o image.o ../lib/zlib.a
misc-embedded.o: In function `decompress_kernel':
misc-embedded.o(.text+0x28): undefined reference to `embed_config'
make[2]: *** [zvmlinux] Error 1

The comments on embed_config.c say that functions in that file are for
those embedded 8xx boards that do not have boot monitor support for
board information. The embed_config() just sets some values of bd_t.
Since I already have ppcboot running, I think I don't need any
embed_config stuff, or even boot stuff. Right?

Thank you very much.

- Shawn.


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Re: vmlinx and ppcboot

[Wolfgang Denk]

In message <3E2300D9.70307@redswitch.com> you wrote:
>
> After 'make zImage', here comes the error message.

zImage is not the correct build target if you intend to use U-Boot  /
PPCBoot. Try "make pImage" instead.

> misc-embedded.o: In function `decompress_kernel':
> misc-embedded.o(.text+0x28): undefined reference to `embed_config'
> make[2]: *** [zvmlinux] Error 1

This is not appropriate for use with U-Boot / PPCBoot.

> The comments on embed_config.c say that functions in that file are for
> those embedded 8xx boards that do not have boot monitor support for

Right.

> Since I already have ppcboot running, I think I don't need any
> embed_config stuff, or even boot stuff. Right?

Right.

Best regards,

Wolfgang Denk

--
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd@denx.de
The human mind treats a new idea the way the body  treats  a  strange
protein - it rejects it.                                 - P. Medawar

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