Re: CVS commit: src/sys/arch

[KIYOHARA Takashi <kiyohara%kk.iij4u.or.jp@localhost>]

Hi! Jared,


From: "Jared D. McNeill" <jmcneill%netbsd.org@localhost>
Date: Wed, 16 Jun 2010 22:06:55 +0000

> Module Name:  src
> Committed By: jmcneill
> Date:         Wed Jun 16 22:06:54 UTC 2010
> 
> Modified Files:
>       src/sys/arch/arm/arm: cpufunc.c
>       src/sys/arch/arm/arm32: cpu.c db_interface.c pmap.c
>       src/sys/arch/arm/conf: files.arm
>       src/sys/arch/arm/include: armreg.h cpuconf.h cpufunc.h
>       src/sys/arch/arm/include/arm32: pmap.h pte.h
>       src/sys/arch/arm/omap: omap2_mputmr.c omap2_obio.c omap2_reg.h
>       src/sys/arch/evbarm/beagle: beagle.h beagle_machdep.c beagle_start.S
> Added Files:
>       src/sys/arch/arm/arm: cpufunc_asm_armv7.S
>       src/sys/arch/arm/arm32: cortexa8_pmc.c
>       src/sys/arch/evbarm/conf: IGEPV2 std.igepv2
> 
> Log Message:
> PR port-arm/43299: Support added for igepv2/cortexa8/omap3530
> 
> Apply patch from PR, with build fixes. ok skrll, matt

Why CPU_CORTEXA8 is ARM_ARCH_6?

http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/arch/arm/include/cpuconf.h.diff?r1=1.16&r2=1.17&only_with_tag=MAIN&f=h

Index: cpuconf.h
===================================================================
RCS file: /cvsroot/src/sys/arch/arm/include/cpuconf.h,v
retrieving revision 1.16
retrieving revision 1.17
diff -u -r1.16 -r1.17
--- cpuconf.h   27 Feb 2009 03:57:41 -0000      1.16
+++ cpuconf.h   16 Jun 2010 22:06:53 -0000      1.17
@@ -119,7 +119,7 @@
 #define        ARM_ARCH_5      0
 #endif
 
-#if defined(CPU_ARM11)
+#if defined(CPU_ARM11) || defined(CPU_CORTEXA8)
 #define ARM_ARCH_6     1
 #else
 #define ARM_ARCH_6     0



Cortex-A8 is ARMv7 architecture.

  http://infocenter.arm.com/help/index.jsp
    - Cortex-A series processors
      - Cortex-A8
        - Revision: r3p2
          - Cortex-A8 Technical Reference Manual
            - 1.2. ARMv7-A architecture

There is a possibility that the patch for Gumstix Overo that I made in
old times helps your understanding though I am not well informed about
the ARM architecture.

  ftp://ftp.netbsd.org/pub/NetBSD/misc/kiyohara/gumstix/armv7.diff

Thanks,
--
kiyohara