V3:
o Rebase on master
o Dependent on oe-core series "Fixes for tiny distros and linux-yocto-tiny"
RFC V2:
o Use VIRTUAL-RUNTIME_keymaps as suggested by Martin Jansa
o Drop poky-common abstraction as suggested by Richard Purdie in
favor of POKY_DEFAULT_EXTRA_R* variables.
Poky-tiny defines a new distro policy for building tiny Linux images. Rather
than create new image tasks and recipes, it reuses existing ones, modifying them
as necessary. See the poky-tiny commit log for details on the policy goals.
In its current form, poky-tiny builds a qemux86 core-image-minimal image
and kernel in 2.6 MB (compressed):
1.2M bzImage-qemux86.bin
1.4M core-image-minimal-qemux86.cpio.gz
After mounting the rootfs:
$ sudo du -hs .
3.4M .
$ sudo ~/bin/dirsize.py 25000
[sudo] password for dvhart:
2927998 .
1754686 ./lib
1022080 ./lib/libc-2.13.so
157124 ./lib/libm-2.13.so
119036 ./lib/ld-2.13.so
96128 ./lib/libpthread-2.13.so
91960 ./lib/libnsl-2.13.so
83748 ./lib/libresolv-2.13.so
46656 ./lib/libnss_files-2.13.so
34588 ./lib/libnss_compat-2.13.so
30624 ./lib/librt-2.13.so
26056 ./lib/libcrypt-2.13.so
549600 ./bin
549600 ./bin/busybox
531908 ./sbin
531908 ./sbin/ldconfig
71860 ./etc
28006 ./etc/init.d
Displayed 2789508/2927998 bytes (95.27%)
This image can be tested in qemu with:
qemu-system-i386 -kernel
/build/poky/qemux86/tmp/deploy/images/bzImage-qemux86.bin -append
"console=ttyS0,115200 root=0800" -nographic
/build/poky/qemux86/tmp/deploy/images/core-image-minimal-qemux86.ext2
This results in booting to a busybox shell:
/bin/sh: can't access tty; job control turned off
/ #
While some improvement is still needed, especially with the init scripting and
the linux-yocto-tiny integration with the linux-yocto kernel tools, this gets
us started and gets the core in place for others to start using it and help to
shape the init process, etc.
Thanks,
Darren
The following changes since commit 6cd5faddad3c69e7e81e7f66d87a3ee650ec717e:
task-core-boot: Allow DISTRO to disable keymaps via VIRTUAL-RUNTIME_keymaps
(2011-12-28 15:28:20 -0800)
are available in the git repository at:
git://git.pokylinux.org/poky-contrib dvhart/tiny-v3
http://git.pokylinux.org/cgit.cgi/poky-contrib/log/?h=dvhart/tiny-v3
Darren Hart (3):
distro: Add POKY_DEFAULT_EXTRA_R* variables
distro: Add poky-tiny distro definition
image_types: Ensure /init exists for cpio rootfs archives
meta-yocto/conf/distro/poky-tiny.conf | 103 +++++++++++++++++++++++++++++++++
meta-yocto/conf/distro/poky.conf | 8 ++-
meta/classes/image_types.bbclass | 10 +++-
3 files changed, 117 insertions(+), 4 deletions(-)
create mode 100644 meta-yocto/conf/distro/poky-tiny.conf
--
1.7.6.4
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