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| -rw-r--r-- | meta-yocto/conf/distro/poky-tiny.conf | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/meta-yocto/conf/distro/poky-tiny.conf b/meta-yocto/conf/distro/poky-tiny.conf new file mode 100644 index 0000000000..49c4397a42 --- /dev/null +++ b/meta-yocto/conf/distro/poky-tiny.conf @@ -0,0 +1,103 @@ +# Distribution definition for: poky-tiny +# +# Copyright (c) 2011, Intel Corporation. +# All rights reserved. +# +# Poky-tiny is intended to define a tiny Linux system comprised of a +# Linux kernel tailored to support each specific MACHINE and busybox. +# Poky-tiny sets some basic policy to ensure a usable system while still +# keeping the rootfs and kernel image as small as possible. +# +# The policies defined are intended to meet the following goals: +# o Serial consoles only (no framebuffer or VGA console) +# o Basic support for IPV4 networking +# o Single user ash shell +# o Static images (no support for adding packages or libraries later) +# o Read-only or RAMFS root filesystem +# o Combined Linux kernel + rootfs in under 4MB +# o Allow the user to select between eglibc or uclibc with the TCLIBC variable +# +# This is currently a partial definition, the following tasks remain: +# [ ] Integrate linux-yocto-tiny ktype into linux-yocto +# [ ] Define linux-yocto-tiny configs for all supported BSPs +# [ ] Drop ldconfig from the installation +# [ ] Modify the runqemu scripts to work with ext2 parameter: +# runqemu qemux86 qemuparams="-nographic" bootparams="console=ttyS0,115200 root=0800" +# [ ] Modify busybox to allow for DISTRO_FEATURES-like confiruration + +require conf/distro/poky.conf +DISTRO = "poky-tiny" + +# FIXME: consider adding a new "tiny" feature +#DISTRO_FEATURES_append = " tiny" + +# Distro config is evaluated after the machine config, so we have to explicitly +# set the kernel provider to override a machine config. +PREFERRED_PROVIDER_virtual/kernel = "linux-yocto-tiny" +PREFERRED_VERSION_linux-yocto-tiny = "3.0%" + +# We can use task-core-boot, but in the future we may need a new task-core-tiny +#POKY_DEFAULT_EXTRA_RDEPENDS += "task-core-boot" +# Drop kernel-module-af-packet from RRECOMMENDS +POKY_DEFAULT_EXTRA_RRECOMMENDS = "" + +# FIXME: what should we do with this? +TCLIBCAPPEND = "" + +# Disable wide char support for ncurses as we don't include it in +# in the LIBC features below. +ENABLE_WIDEC="false" + +# Reconfigure eglibc for a smaller installation +# Comment out any of the lines below to disable them in the build +DISTRO_FEATURES_LIBC_TINY = "libc-libm libc-crypt" +# Required for "who" +DISTRO_FEATURES_LIBC_MINIMAL = "libc-utmp libc-getlogin" +DISTRO_FEATURES_LIBC_REGEX = "libc-posix-regexp" +DISTRO_FEATURES_LIBC_NET = "libc-inet libc-nis" + +DISTRO_FEATURES_LIBC = "${DISTRO_FEATURES_LIBC_TINY} \ + ${DISTRO_FEATURES_LIBC_MINIMAL} \ + ${DISTRO_FEATURES_LIBC_REGEX} \ + ${DISTRO_FEATURES_LIBC_NET} \ + " + +# Comment out any of the lines below to disable them in the build +# DISTRO_FEATURES options: +# alsa bluetooth ext2 irda pcmcia usbgadget usbhost wifi nfs zeroconf pci +DISTRO_FEATURES_TINY = "pci" +DISTRO_FEATURES_NET = "ipv4" +DISTRO_FEATURES_USB = "usbhost" +#DISTRO_FEATURES_USBGADGET = "usbgadget" +#DISTRO_FEATURES_WIFI = "wifi" + +DISTRO_FEATURES = "${DISTRO_FEATURES_TINY} \ + ${DISTRO_FEATURES_NET} \ + ${DISTRO_FEATURES_USB} \ + ${DISTRO_FEATURES_USBGADGET} \ + ${DISTRO_FEATURES_WIFI} \ + ${DISTRO_FEATURES_LIBC} \ + " + +# Use tmpdevfs and the busybox runtime services +VIRTUAL-RUNTIME_dev_manager = "" +VIRTUAL-RUNTIME_login_manager = "" +VIRTUAL-RUNTIME_init_manager = "" +VIRTUAL-RUNTIME_keymaps = "" + +# FIXME: Consider adding "modules" to MACHINE_FEATURES and using that in +# task-core-base to select modutils-initscripts or not. Similar with "net" and +# netbase. + +# By default we only support ext2 and initramfs. We don't build live as that +# pulls in a lot of dependencies for the live image and the installer, like +# udev, grub, etc. These pull in gettext, which fails to build with wide +# character support. +IMAGE_FSTYPES = "ext2 cpio.gz" + +# Drop v86d from qemu dependency list (we support serial) +# Drop grub from meta-intel BSPs +# FIXME: A different mechanism is needed here. We could define -tiny +# variants of all compatible machines, but that leads to a lot +# more machine configs to maintain long term. +MACHINE_ESSENTIAL_EXTRA_RDEPENDS = "" |