kernel cross-compile

[Ken Tossell]

Quoting Igor Muratov <migor at lrn.ru>:

>
> Hi All.
>
> I'm build kernel for 7044-170 (uniproc.).
> I'm go  step by step corresponding by penguinppc64.org. Now i have
> binutils-2.12.90.0.9 and gcc-3.1 successfully compiled with
> --target=powerpc64-linux
>
> Next. I try to build kernel 2.4.18 with patch-2.4.19-pre8.gz and
> linuxppc64-2.4.19-pre8-ibm-1.patch.gz
> Also, I had to make my own small patch
> ------------->8----------
> --- arch/ppc64/kernel/process.c.        Thu Jun 20 17:58:26
> 2002
> +++ arch/ppc64/kernel/process.c Thu Jun 20 17:58:51
> 2002
> @@ -41,6 +41,7
> @@
>
>  #include
> <asm/prom.h>
>
>  #include
> <asm/ppcdebug.h>
>
>  #include
> <asm/machdep.h>
>
> +#include
> <asm/paca.h>
>
>  #include
> <asm/iSeries/HvCallHpt.h>
>
>
>
>  int dump_fpu(struct pt_regs *regs, elf_fpregset_t
> *fpregs);
> --- arch/ppc64/kernel/traps.c.  Thu Jun 20 17:58:06
> 2002
> +++ arch/ppc64/kernel/traps.c   Thu Jun 20 17:52:58
> 2002
> @@ -40,6 +40,7
> @@
>
>  #include
> <asm/io.h>
>
>  #include
> <asm/processor.h>
>
>  #include
> <asm/ppcdebug.h>
>
> +#include
> <asm/rtas.h>
>
>
>
>  extern int fix_alignment(struct pt_regs
> *);
>  extern void bad_page_fault(struct pt_regs *, unsigned
> long);
> --- arch/ppc64/lib/dec_and_lock.c.      Thu Jun 20 18:54:03
> 2002
> +++ arch/ppc64/lib/dec_and_lock.c       Thu Jun 20 18:48:03
> 2002
> @@ -8,6 +8,7
> @@
>
>
> */
>
>
>
>  #include
> <linux/spinlock.h>
>
> +#ifndef
> ATOMIC_DEC_AND_LOCK
>
>  #include
> <asm/system.h>
>
>  #include
> <asm/atomic.h>
>
>
>
> @@ -36,3 +37,4
> @@
>
>
> spin_unlock(lock);
>
>         return
> 0;
>
>  }
>
> +#endif
>
> ------------->8----------
>
> Now, my trouble in last step of kernel building:
>
> /opt/ppc64/bin/powerpc64-linux-ld -T arch/ppc64/vmlinux.lds -Bstatic -e
> 0xc000000000000000 -Ttext 0xc000000000000000 arch/ppc64/kernel/head.o
> init/main.o init/version.o init/do_mounts.o \
>         --start-group \
>         arch/ppc64/kernel/kernel.o arch/ppc64/mm/mm.o
> arch/ppc64/lib/lib.o kernel/kernel.o mm/mm.o fs/fs.o ipc/ipc.o
> arch/ppc64/xmon/x.o \
>          drivers/char/char.o drivers/block/block.o drivers/misc/misc.o
> drivers/net/net.o drivers/media/media.o drivers/scsi/scsidrv.o
> drivers/cdrom/driver.o drivers/pci/driver.o drivers/video/video.o
> drivers/input/inputdrv.o \
>         net/network.o \
>         /opt/cross/linux/lib/lib.a \
>         --end-group \
>         -o vmlinux
> arch/ppc64/kernel/head.o: In function `.start_secondary_prolog':
> arch/ppc64/kernel/head.o(.text+0x9db4): undefined reference to
> `.start_secondary'
> arch/ppc64/kernel/kernel.o: In function `.openpic_init_processor':
> arch/ppc64/kernel/kernel.o(.text+0x28b04): undefined reference to
> `.get_hard_smp_processor_id'
> arch/ppc64/kernel/kernel.o: In function `.openpic_set_affinity':
> arch/ppc64/kernel/kernel.o(.text+0x28f14): undefined reference to
> `.get_hard_smp_processor_id'
> arch/ppc64/kernel/kernel.o: In function `.xics_set_affinity':
> arch/ppc64/kernel/kernel.o(.text+0x29988): undefined reference to
> `.get_hard_smp_processor_id'
> arch/ppc64/kernel/kernel.o: In function `.pSeriesLP_qirr_info':
> arch/ppc64/kernel/kernel.o(.text+0x36380): undefined reference to
> `.get_hard_smp_processor_id'
> arch/ppc64/kernel/kernel.o: In function `.openpic_init':
> arch/ppc64/kernel/kernel.o(.text.init+0xa60): undefined reference to
> `.get_hard_smp_processor_id'
> arch/ppc64/kernel/kernel.o(.text.init+0xba0): more undefined references
> to `.get_hard_smp_processor_id' follow
> kernel/kernel.o: In function `.printk':
> kernel/kernel.o(.text+0x4ca4): undefined reference to `.__restore_flags'
> kernel/kernel.o(.text+0x4cec): undefined reference to `.__restore_flags'
> kernel/kernel.o: In function `.release_console_sem':
> kernel/kernel.o(.text+0x4e50): undefined reference to `.__restore_flags'
> kernel/kernel.o(.text+0x4e98): undefined reference to `.__restore_flags'
> kernel/kernel.o: In function `.register_console':
> kernel/kernel.o(.text+0x51c4): undefined reference to `.__restore_flags'
> kernel/kernel.o(.text+0x12718): more undefined references to
> `.__restore_flags' follow
> drivers/video/video.o: In function `.tdfxfb_probe':
> drivers/video/video.o(.text.init+0x190c): undefined reference to
> `.eeh_memset'
> make: *** [vmlinux] Error 1
>
> Where is my fault?
>
> --
> With best regards                    System administrator
> Igor Muratov                         mailto:migor at lrn.ru
>
>
>

The problem may be that the kernel won't build well as uniprocessor. Sometimes
it will build, but then it will be buggy. Make sure that you are building a SMP
kernel. I run ppc64 Linux on a p44 170 UP and smp works fine.


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