MBX kernel compile error

MBX kernel compile error

[Yiran Duan]

Hi,

I tried to compile linux kernel for MBX board on
i686-pc-linux. The package I used to built my
cross-compiler is:

    binutils-2.10
    glibc-2.1.3
    gcc-2.95

The kernel package I used is

    linux-2.2.17

I passed make xconfig, make dep, make clean, but got
the following error at make zImage:

powerpc-linux-gcc -D__KERNEL__
-I/home/compiler/sources/linux/include -Wall
-Wstrict-prototypes -O2 -fomit-frame-pointer
-fno-strict-aliasing -D__powerpc__ -fsigned-char
-msoft-float -pipe -fno-builtin -ffixed-r2
-Wno-uninitialized -mmultiple -mstring -mcpu=860
-D__ASSEMBLY__ -c head.S -o head.o
head.S: Assembler messages:
head.S:1829: Error: unsupported relocation type
make[1]: *** [head.o] Error 1
make[1]: Leaving directory
`/home/compiler/sources/linux/arch/ppc/kernel'
make: *** [_dir_arch/ppc/kernel] Error 2

Could anyone give me any idea about where I was wrong?

Thank you.
Yiran.

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Re: MBX kernel compile error

[Jamie Guinan]

On Tue, 17 Oct 2000, Yiran Duan wrote:

> Hi,
>
> I tried to compile linux kernel for MBX board on
> i686-pc-linux. The package I used to built my
> cross-compiler is:
>
>     binutils-2.10
>     glibc-2.1.3
>     gcc-2.95

I've built for MBX with almost the same, only binutils 2.9.5 instead
of 2.10.

> The kernel package I used is
>
>     linux-2.2.17
>
> I passed make xconfig, make dep, make clean, but got
> the following error at make zImage:
>
> powerpc-linux-gcc -D__KERNEL__
> -I/home/compiler/sources/linux/include -Wall
> -Wstrict-prototypes -O2 -fomit-frame-pointer
> -fno-strict-aliasing -D__powerpc__ -fsigned-char
> -msoft-float -pipe -fno-builtin -ffixed-r2
> -Wno-uninitialized -mmultiple -mstring -mcpu=860
> -D__ASSEMBLY__ -c head.S -o head.o
> head.S: Assembler messages:
> head.S:1829: Error: unsupported relocation type
> make[1]: *** [head.o] Error 1
> make[1]: Leaving directory
> `/home/compiler/sources/linux/arch/ppc/kernel'
> make: *** [_dir_arch/ppc/kernel] Error 2
>
> Could anyone give me any idea about where I was wrong?

Looking at
  http://lxr.linux.no/source/arch/ppc/kernel/head.S
the problem is apparent:

  255 #ifndef CONFIG_8xx
  256         bl      prom_init
  257         .globl  __secondary_start
  258 __secondary_start:
  ...

  1293 #ifndef CONFIG_8xx
  ..
  1822 #else  /* CONFIG_8xx */
  1823         .globl  giveup_fpu
  1824 giveup_fpu:
  1825         blr
  1826 #endif /* CONFIG_8xx */
  1827
  1828 mmu_off:
  1829         addi    r4, r3, __secondary_start - _start
  1830         mfmsr   r3

__secondary_start is not defined for CONFIG_8xx.  It looks like
head.S changed a bit since 2.2.14, and I wouldn't know which way to go
about fixing it, but I might suggest either backing down to 2.2.14 or
jumping to 2.4.0-test2.

The latest Monta Vista CDK (1.2) appears to include both, and last I
tried their stuff worked quite well with little headaches - I'd recommend
giving it a try,

  http://www.mvista.com/
  ftp://ftp.mvista.com/pub/CDK/

-Jamie

>
> Thank you.
> Yiran.


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Re: MBX kernel compile error

[Wolfgang Denk]

Dear Yiran,

in message <20001017210229.5208.qmail@web5201.mail.yahoo.com> you wrote:
>
> I tried to compile linux kernel for MBX board on
> i686-pc-linux. The package I used to built my
> cross-compiler is:
>
>     binutils-2.10
>     glibc-2.1.3
>     gcc-2.95
>
> The kernel package I used is
>
>     linux-2.2.17
...
> Could anyone give me any idea about where I was wrong?


You better get some working cross tools that are ready configured for
Embedded  PowerPC  systems;  there  are  some  small,  but  necessary
changes.  Check  out the MV tools, or, if you want to build the tools
from scratch, our patches and build scripts at
ftp://ftp.denx.de/pub/LinuxPPC/usr/src/CDK.tar.gz
(and see also http://www.denx.de/solutions-en.html ).

Also, get a kernel version for the Embedded PPC - 2.2.17  will  *NOT*
work.

Wolfgang Denk

--
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd@denx.de
Little known fact about Middle Earth:   The Hobbits had a very sophi-
sticated computer network!   It was a Tolkien Ring...

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LIST_HEAD

[Zhaobin Zhu]

Hi,

What does LIST_HEAD do in drivers/pci/pci.c ?

     LIST_HEAD(pci_root_buses);
     LIST_HEAD(pci_devices);

Thanks,

--
 Zhaobin Zhu

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Re: LIST_HEAD

[Tod E. Kurt]

Try this:

   demo% grep -C LIST_HEAD /usr/src/linux/*.h

Zhaobin Zhu wrote:
>
> Hi,
>
> What does LIST_HEAD do in drivers/pci/pci.c ?
>
>      LIST_HEAD(pci_root_buses);
>      LIST_HEAD(pci_devices);
>
> Thanks,
>
> --
>  Zhaobin Zhu
>

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Re: LIST_HEAD

[Tod E. Kurt]

Ooops, I meant:

    demo% grep -C LIST_HEAD /usr/include/linux/*.h

which should be the same as:

    demo% grep -C LIST_HEAD /usr/src/linux/include/linux/*.h


"Tod E. Kurt" wrote:
>
> Try this:
>
>    demo% grep -C LIST_HEAD /usr/src/linux/*.h
>
> Zhaobin Zhu wrote:
> >
> > Hi,
> >
> > What does LIST_HEAD do in drivers/pci/pci.c ?
> >
> >      LIST_HEAD(pci_root_buses);
> >      LIST_HEAD(pci_devices);
> >
> > Thanks,
> >
> > --
> >  Zhaobin Zhu
> >

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pci_read_config_byte in Hardhat CDK1.2 for powerpc

[Zhaobin Zhu]

Hi,

Anybody knows where the function "pci_read_config_byte(..)" is defined ?

Thanks,
--
 Zhaobin Zhu
 zzhu@emc.com


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Re: pci_read_config_byte in Hardhat CDK1.2 for powerpc

[Cal Erickson]

Try looking in drivers/pci/pci.c This is where the code resides. It
is also where the symbol is exported.
Cal Erickson
Zhaobin Zhu wrote:

> Hi,
>
> Anybody knows where the function "pci_read_config_byte(..)" is defined ?
>
> Thanks,
> --
>  Zhaobin Zhu
>  zzhu@emc.com
>

--
===========================================================================
Cal Erickson                 MontaVista Software Inc.
Customer Support Engineer    490 Potrero Avenue
Phone (408) 328-0304         Sunnyvale CA 94085
Fax   (408) 328-9204         e-mail cal_erickson@mvista.com
Pager 877-566-2012           support 1-800-759-8888 pin 202-7489
web http://www.mvista.com    support e-mail: support@mvista.com
eCode: http://cal@work.com.ecode.com
===========================================================================


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Re: pci_read_config_byte in Hardhat CDK1.2 for powerpc

[Grant Erickson]

On Wed, 18 Oct 2000, Zhaobin Zhu wrote:
> Anybody knows where the function "pci_read_config_byte(..)" is defined?

Search for 'PCI_OP' in drivers/pci.c. Also, there are machine-specific
routines defined in arch/ppc/*pci*.

Grant


--
 Grant M. Erickson                    University of Minnesota Alumni
  o mail:erick205@tc.umn.edu                              1996 BSEE
  o http://www.tc.umn.edu/~erick205/                      1998 MSEE


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Re: pci_read_config_byte in Hardhat CDK1.2 for powerpc

[Graham Stoney]

Zhaobin Zhu writes:
> Anybody knows where the function "pci_read_config_byte(..)" is defined ?

Do yourself a favour and grab "cscope" from sourceforge at:
    http://sourceforge.net/projects/cscope/

I find it extremely handy for navigating the Linux kernel source tree.

Regards,
Graham

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Re: pci_read_config_byte in Hardhat CDK1.2 for powerpc

[Zhaobin Zhu]

"Tod E. Kurt" wrote:

> Zhaobin Zhu wrote:
> >
> > Hi,
> >
> > Anybody knows where the function "pci_read_config_byte(..)" is defined ?
>
> Again, use 'grep' in '/usr/include/linux/*.h'.
>
> I did that and found it in '/usr/include/linux/pci.h'.

Yes,  pci_read_config_byte(..) is declared in include/linux/pci.h, but I
can't find
its C source anywhere. I do find it in System.map.

Thanks,

--
 Zhaobin Zhu
 zzhu@emc.com


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Re: pci_read_config_byte in Hardhat CDK1.2 for powerpc

[Mark A. Greer]

Zhaobin Zhu wrote:

> "Tod E. Kurt" wrote:
>
> > Zhaobin Zhu wrote:
> > >
> > > Hi,
> > >
> > > Anybody knows where the function "pci_read_config_byte(..)" is defined ?
> >
> > Again, use 'grep' in '/usr/include/linux/*.h'.
> >
> > I did that and found it in '/usr/include/linux/pci.h'.
>
> Yes,  pci_read_config_byte(..) is declared in include/linux/pci.h, but I
> can't find
> its C source anywhere. I do find it in System.map.

The definitions of pci_xxx_config_yyy and pcibios_xxx_config_yyy are hard to
find.

pci_xxx_config_yyy are defined by the PCI_OP() macro in drivers/pci/pci.c
pcibios_xxx_config_yyy are defined by the PCI_OP() macro in
drivers/pci/compat.c

At least this is true in 2.4.0-test2.

Mark


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Re: pci_read_config_byte in Hardhat CDK1.2 for powerpc

[Tod E. Kurt]

Zhaobin Zhu wrote:
>
> "Tod E. Kurt" wrote:
>
> > Zhaobin Zhu wrote:
> > >
> > > Hi,
> > >
> > > Anybody knows where the function "pci_read_config_byte(..)" is defined ?
> >
> > Again, use 'grep' in '/usr/include/linux/*.h'.
> >
> > I did that and found it in '/usr/include/linux/pci.h'.
>
> Yes,  pci_read_config_byte(..) is declared in include/linux/pci.h, but I
> can't find
> its C source anywhere. I do find it in System.map.


As someone else mentioned, it (along with most all the other functions
declared in 'pci.h') is is '/usr/src/linux/drivers/pci/pci.c'.  It wraps
'pcibios_read_config_byte', which is defined in
'/usr/src/linux/arch/i386/kernel/bios32.c' for PCs and in various files
(depending on specific arch) in '/usr/src/linux/arch/ppc/kernel'.

-=tod

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Re: pci_read_config_byte in Hardhat CDK1.2 for powerpc

[Zhaobin Zhu]

"Mark A. Greer" wrote:

> The definitions of pci_xxx_config_yyy and pcibios_xxx_config_yyy are hard to
> find.
>
> pci_xxx_config_yyy are defined by the PCI_OP() macro in drivers/pci/pci.c
> pcibios_xxx_config_yyy are defined by the PCI_OP() macro in
> drivers/pci/compat.c
>

Thanks, Mark.

Here is what I found:

pci_read_config_byte =  generic_pcibios_read_byte =
ppc_md.pcibios_read_config_byte = indirect_pcibios_read_config_byte
in arch/ppc/kernel/indirect_pci.c

--
 Zhaobin Zhu
 zzhu@emc.com

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Re: pci_read_config_byte in Hardhat CDK1.2 for powerpc

[Mark A. Greer]

Zhaobin Zhu wrote:

> "Mark A. Greer" wrote:
>
> > The definitions of pci_xxx_config_yyy and pcibios_xxx_config_yyy are hard to
> > find.
> >
> > pci_xxx_config_yyy are defined by the PCI_OP() macro in drivers/pci/pci.c
> > pcibios_xxx_config_yyy are defined by the PCI_OP() macro in
> > drivers/pci/compat.c
> >
>
> Thanks, Mark.
>
> Here is what I found:
>
> pci_read_config_byte =  generic_pcibios_read_byte =
> ppc_md.pcibios_read_config_byte = indirect_pcibios_read_config_byte
> in arch/ppc/kernel/indirect_pci.c

Yes, that is true because of the "set_config_access_method(indirect)" call in the
*_setup.c or *_pci.c routine for your platform (if you're looking at the
sandpoint, its in sandpoint_setup.c).  Other access methods are supported too.

Mark

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