[Skyeye-developer] ARM9EJ-S core CPU ID

[sergey bryukov]

Thanks, the problem was in my assembler code.





an 30, 2008 11:42 PM, Michael. Kang <blackfin.kang at gmail.com> wrote:

> I tried on atm920T . It seems the result is right. Debug output is as
> the following:
>
> ###################################################################################
> ksh at server:/opt/testsuite/linux/build-2.6.22-smdk2410>
> /opt/testsuite/gdb/build-arm/gdb/gdb vmlinux
> GNU gdb 6.7
> Copyright (C) 2007 Free Software Foundation, Inc.
> License GPLv3+: GNU GPL version 3 or later <
> http://gnu.org/licenses/gpl.html>
> This is free software: you are free to change and redistribute it.
> There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
> and "show warranty" for details.
> This GDB was configured as "--host=i686-pc-linux-gnu
> --target=arm-linux"...
> tar     re      (gdb) target remote :12345
> Remote debugging using :12345
> 0xc0008000 in stext ()
> (gdb) disassemble 0xc0008000 0xc000801C
> Dump of assembler code from 0xc0008000 to 0xc000801c:
> 0xc0008000 <stext+0>:   msr     CPSR_c, #211    ; 0xd3
> 0xc0008004 <stext+4>:   mrc     15, 0, r9, cr0, cr0, {0}
> 0xc0008008 <stext+8>:   bl      0xc00082dc <__lookup_processor_type>
> 0xc000800c <stext+12>:  movs    r10, r5
> 0xc0008010 <stext+16>:  beq     0xc0008188 <__error_p>
> 0xc0008014 <stext+20>:  bl      0xc000833c <__lookup_machine_type>
> 0xc0008018 <stext+24>:  movs    r8, r5
> End of assembler dump.
> (gdb) si
> Can't send signals to this remote system.  SIGHUP not sent.
>
> Program received signal SIGHUP, Hangup.
> 0xc0008004 in stext ()
> (gdb) si
> Can't send signals to this remote system.  SIGHUP not sent.
>
> Program received signal SIGHUP, Hangup.
> 0xc0008008 in stext ()
> (gdb) info registers r9
> r9             0x41009200       1090556416
> (gdb)
> ##############################################################
>
> Thanks
> MK
>
> On Jan 30, 2008 2:24 PM, sergey bryukov <sb.subscribe at gmail.com> wrote:
> > Hello!
> > I've tried to read ARM9EJ-S core CPU configuration registers and found
> any
> > mismatch:
> >
> > Reading ID Code Register c0:
> >   MRC p15,0,r0,c1,c0,0  - the result r0=0x50078
> >
> >   Refer to the ARM specification the CPU ID should be 0x41069260 and as
> it
> > defined in the arm_arch_interface.c
> >
> > cpu_config_t arm_cpus[] = {
> >
> >     {"armv5", "arm926ejs", 0x41069260, 0xff0ffff0, INSTCACHE},
> >
> > };
> >
> > But I have
> > r0 = 0x50078 under Insight debug session.
> >
> > It's look like mistake. Or am I wrong?
> >
> >
> >
> >
> >
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> >
>
>
>
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