Hi Ben,
I'm trying to port android to a s3c2410 develop board..which's only
64m ram..
now I've successfully built out armv4t images with your submitted
patch and sean's patches under reviewing.
but I'm getting servicemanager exiting problem while using nfs as
rootfs.
I'm doubting it's the binder who cannot be inited.. likely you've met
the same problem, as in your patch that add some log for this.
what's the problem it is? about mmap? or is there some option to
enable the nfs support this? or 64m limits this?
I've checked the /dev/binder & /dev/ashmen, both are 777.
looking forward for your replay :-), thanks!
I've no usb cable now..and don't know how to make adb to use a
usb2serial cable..so some help on this is also very nice~
On Nov 2, 7:33 pm, "Ben Leslie" <[EMAIL PROTECTED]> wrote:
> I haven't had time to clean up my patches sufficently to submit them
> for formal review, but I'm going away for two weeks tomorrow, and I
> don't want people unnecessarily re-inventing the wheel (although Sean
> and I seem to have gone and invented two wheels in parallel anyway).
>
> I've been using two separate trees, one to try things on and get them
> up and running, and a separate integration tree for submitting things
> on. These patches come straight from the former, and hence won't apply
> 100% cleanly, but it should be relatively obvious what the changes
> are (mostly adding ARCH_ARM_ to the front of HAVE_<x> variables).
>
> The diffs are per project and in most cases should be split into
> multiple separate diffs before committing.
>
> The main other thing that patch addresses other than ARMv4 support is
> using filesystems other than yaffs2, and support for frame-buffer
> devices that don't support panning.
>
> The rest of this just describes the patches in detail. Note, although
> getting this running on the Neo 1973 was the ultimate driver for
> this, most of these patches are really aimed to get Android compiling for
> plain ARMv4 (_not_ ARMv4T). This is _not_ the best approach of running
> Android on an actual OpenMoko phone, but hey there are still devices
> with StrongARM chips out there too.
>
> Note: I am off the air for the next two weeks, and don't plan on submitting
> these for review until I get back from holiday. I'm hoping that someone (looks
> like Sean), is going to be pushing through with ARMv4T support in the
> meantime,
> so most of this will probably addressed one way or another by the time I'm
> back.
>
> If any of it is still relevant once I'm back I'll clean it up for
> submissions then.
>
> system/core:
>
> libcutils/{atomic-android-arm.S,memset32.S}:
>
> * Use BX<cc> macro rather than directly using bx<cc> instructions.
> (see change 1663 for definition of BX<cc> macros).
>
> libpixelflinger/Android.mk:
>
> * Only compile t32cbblend.S when halfword multiplies are available.
> * (Note: this actual check could be cleaned up).
>
> libpixelflinger/scanline.cpp:
>
> * Disable codegeneration on ARMv4
>
> rootdir/Android.mk:
> rootdir/gen_initrc.py:
> rootdir/init.rc:
>
> * Use a script to generate init.rc to allow different file systems
> to be specified. (see other changes in the build project).
>
> frameworks/base
>
> servicemanager/{service_manager.c,binder.c}:
>
> * Provide better debugger in error cases.
>
> audioflinger/AudioMixer.cpp
>
> * Conditionalise use of halfword multiple instructions.
>
> libs/ui/EGLDisplaySurface.cpp
>
> * Provide swapBuffers() implementation for case when PAGE_FLIP is
> not supported. This is probably not the right way to do this.
>
> opengl/libGLES_CM/gl_wrapper.cpp
>
> * Handle return correctly for non-thumb targets.
>
> opengl/libagl/fixed_asm.S
>
> * Use macros for BX<cc>
>
> dalvik:
>
> Android.mk
>
> * Revert to using C version of interpreter if 64bit data instructions
> are not available. Sean's more comprehensive patches to change the
> asm are probably better here once they are cleaned up. But this
> does work for now
>
> vm/alloc/clz.{ch}:
>
> * Avoid using builtin clz if clz instruction is not available. Yet to
> determine
> exactly why this should be necessary.
>
> vm/arch/arm/CallEABI.S:
>
> * This patch works but is hacky. The important thing for this file is that if
> HAVE_THUMB is not defined, or HAVE_FASTINTERWORKING is defined, then using
> 'bx' is not needed and values can safely be loaded directly into
> pc. Of course
> on ARMv4T where you have THUMB, but no FASTINTERWORKING, more
> extensive changes
> are required, see Sean's patches.
>
> build:
>
> core/{Makefile,config.mk}:
>
> * Add support for using different filesystems for system and user, as
> well as support
> for yaffs (not yaffs2) and jffs2. Rationale is: jffs2 is better
> compression and can
> work well for ro /system. yaffs works on NAND with 512 byte pages (as
> opposed to yaffs2
> for 2k pages). For NAND constrained devices you end up needing both
> filesystems.
>
> core/prelink-linux-arm.map:
>
> * Very small change to layout which seems to work for both ARMv4 and ARMv5.
>
> bionic:
>
> libc/Android.mk,libc/string/ffs.c:
>
> * Nasty hack for ffs() implementation. Note: the whole subject of gcc
> builtins
> should be better addressed. I think Sean has an assembler implementation of
> ffs().
>
> strlen,memcpy,memset:
>
> * Use PLD() macro to avoid unknown instruction on ARMv4.
>
> gensyscalls.py:
>
> * Updated to use BX<cc> macro
>
> everything else:
>
> * Regeneration of syscalls.
>
> (Due to regenerating all syscalls this patch is quite large, hence it
> is gzipped before attaching).
>
> external/yaffs2:
>
> * Add support for generating yaffs as well as yaffs2 images.
>
> external/sonivox:
>
> * Only compile optimised ASM if half word multiply is available.
>
> external/skia:
>
> * Conditionalise use of __built_clz, and halfword multiple optimisations.
>
> external/opencore:
>
> * Conditionalise compilation based on having halfword multiply and
> clz instructions as necessary.
>
> external/jpeg:
>
> * Conditionalise jpeg optimisation based on having halfword multiplies.
>
> * Only use prefetch-loop-arrays when PLD instruction exists. This is
> not a great approach here, I think Marcello's is probably better.
>
> external/extras:
>
> * Use BX<cc> macros.
>
> build.diff
> 5KViewDownload
>
> dalvik.diff
> 3KViewDownload
>
> external-extras.diff
> 1KViewDownload
>
> external-jpeg.diff
> 1KViewDownload
>
> external-opencore.diff
> 3KViewDownload
>
> external-skia.diff
> 1KViewDownload
>
> external-sonivox.diff
> < 1KViewDownload
>
> external-yaffs2.diff
> 1KViewDownload
>
> frameworks-base.diff
> 8KViewDownload
>
> system-core.diff
> 8KViewDownload
>
> bionic.diff.gz
> 16KViewDownload
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