1. Install Gentoo Embedded with or without Xorg support and boot from FLASH memory
2. Install Linux on an AMD Geode LX / GX based mini computer
Much of the information here is derived from the guidelines at the following two locations which I recommend reading:
# Download and install portage under /usr/portage |
# su - |
# cd /opt |
# mkdir /opt/dallur |
# mkdir -p /opt/dallur/usr/portage |
# wget ftp://trumpetti.atm.tut.fi/gentoo/experimental/x86/embedded/stages/stage3-x86-uclibc-2006.1.tar.bz2 |
# tar -xjpf stage3-x86-uclibc-2006.1.tar.bz2 -C /opt/dallur |
# echo "mount --bind /usr/portage /opt/dallur/usr/portage" >> enter_chroot.sh |
# echo "mount --bind /dev /opt/dallur/dev" >> enter_chroot.sh |
# echo "mount -t proc proc /opt/dallur/proc" >> enter_chroot.sh |
# echo "chroot /opt/dallur/ /bin/bash --login" >> enter_chroot.sh |
# echo "umount /opt/dallur/usr/portage" >> enter_chroot.sh |
# echo "umount /opt/dallur/dev" >> enter_chroot.sh |
# echo "umount /opt/dallur/proc" >> enter_chroot.sh |
# chmod u+x enter_chroot.sh |
# cp /etc/resolv.conf /opt/dallur/etc/resolv.conf |
# ./enter_chroot.sh |
# emerge --sync |
# emerge -Du world |
# cd /etc/ |
# unlink make.profile |
# ln -s /usr/portage/profiles/uclibc/x86/2005.1 /etc/make.profile |
Edit etc/make/conf to look like: |
USE="minimal acpi alsa uclibc 3dnow mmx X fbcon fbdev png gif jpeg tiff theora a52 aac dts mad svga oggvorbis ffmpeg avi divx4linux mpeg mp3 ogg v4l win32codecs python bitmap-fonts truetype-fonts -gtk -kde -nls" |
CHOST="i586-gentoo-linux-uclibc" |
CFLAGS="-march=k6-2 -Os -pipe -fomit-frame-pointer -mmmx -m3dnow -fno-align-functions -fno-align-loops -fno-align-jumps -fno-align-labels -finline-functions" |
CXXFLAGS="${CFLAGS}" |
FEATURES="ccache buildpkg" |
PKGDIR="${PORTDIR}/packages/uclibc" |
VIDEO_CARDS="nsc fbdev v4l vesa vga" |
INPUT_DEVICES="mouse keyboard" |
# We should consider setting this to K6 or check if there is a K6-2 which would be even better |
UCLIBC_CPU="586MMX" |
PORTDIR_OVERLAY="/usr/local/portage" |
GENTOO_MIRRORS="http://ftp.rhnet.is/pub/gentoo/" |
# env-update |
# source /etc/profile |
# emerge -av python |
# emerge -e system |
# emerge -av grub freetype |
# mkdir /dallur |
# echo "sys-apps/baselayout-lite **" >> /etc/portage/package.keywords |
# ROOT=/dallur USE=make-symlinks emerge -avN baselayout-lite uclibc busybox |
# chroot /dallur /bin/ash |
# passwd |
# addgroup -g 100 users kid |
# adduser -h /home/kid -s /bin/ash -G users kid |
# exit |
# echo "dallur" > /dallur/etc/hostname |
# echo 'dns_domain_lo="localdomain"' > /etc/conf.d/net |
|
Edit /dallur/etc/fstab to look like: |
/dev/ram0 / cramfs defaults 0 0 |
none /proc proc defaults 0 0 |
none /dev/shm tmpfs defaults 0 0 |
none /tmp tmpfs defaults 0 0 |
none /proc proc defaults 0 0 |
/dev/sda1 /boot ext2 noauto,ro 0 0 |
|
Edit /dallur/init to look like: |
#!/bin/ash |
echo |
echo |
echo " Welcome to Embedded Gentoo" |
echo |
echo |
echo " * Setting umask.." |
umask 022 |
echo " * Mounting /proc.." |
mount -t proc none /proc |
|
echo " * Trying to make mouse device.." |
mkdir /dev/input |
mknod /dev/input/mice c 13 63 |
mknod /dev/mouse c 13 63 |
|
echo " * Starting init.." |
exec <dev/console >dev/console 2>&1 |
exec chroot . /sbin/init |
echo " *** Starting init failed! ***" |
echo " * Trying to start a shell.." |
exec /bin/ash |
|
|
# cd /dallur |
# rm linuxrc |
# ln -s init linuxrc |
# chmod +x /dallur/init |
If the current kernel version from gentoo-sources is 2.6.19 use them: |
# emerge -av gentoo-sources |
Else use mm-sources for geode framebuffer and cpu patches: |
# echo "sys-kernel/mm-sources ~x86" >> /etc/portage/package.keywords |
# emerge -av mm-sources |
# cd /usr/src/linux |
make menuconfig ARCH="i386" |
|
Here you will need to make a config for your own hardware depending on which system you have. |
My config for the WAFER-LX-800-R10 is here for reference. |
Config for 2.6.20-rc1-mm1 |
# export KERNEL_DIR=/usr/src/linux |
Install ALSA Sound |
When ASoC (SoC) support is more mature we expect AC97 on the Geode to be there |
# ROOT=/dallur emerge -avN alsa-lib alsa-utils alsa-tools alsa-headers |
CHROOT to the dallur environment within |
# rc-update add alsasound boot |
Install X window environment with Hardware Accelration for AMD Geode LX |
This will change as the driver gets included in Xorg 7.2 and the patch will not be needed. |
Note that the driver might be called AMD instead of NSC in the future. |
# echo "x11-base/xorg-server ~x86" >> /etc/portage/package.keywords |
# echo "x11-drivers/xf86-video-nsc ~x86" >> /etc/portage/package.keywords |
# mkdir -p /usr/local/portage/x11-drivers/xf86-video-nsc/files |
# cd /usr/local/portage/x11-drivers/xf86-video-nsc/ |
# cp /usr/portage/x11-drivers/xf86-video-nsc/xf86-video-nsc-2.8.2.ebuild ./ |
# cp -Rp /usr/portage/x11-drivers/xf86-video-nsc/files/* ./files/ |
# cd /usr/local/portage/x11-drivers/xf86-video-nsc/files |
|
Edit xf86-video-nsc-2.8.2.ebuild to look like this: |
# Copyright 1999-2006 Gentoo Foundation |
# Distributed under the terms of the GNU General Public License v2 |
# $Header: /var/cvsroot/gentoo-x86/x11-drivers/xf86-video-nsc/xf86-video-nsc-2.8.2.ebuild,v 1.1 Exp $ |
# Must be before x-modular eclass is inherited |
#SNAPSHOT="yes" |
XDPVER=4 |
|
inherit x-modular eutils |
|
DESCRIPTION="Nsc video driver" |
KEYWORDS="~amd64 ~sh ~x86 ~x86-fbsd" |
RDEPEND=">=x11-base/xorg-server-1.0.99" |
DEPEND="${RDEPEND} |
x11-proto/fontsproto |
x11-proto/randrproto |
x11-proto/renderproto |
x11-proto/videoproto |
x11-proto/xextproto |
x11-proto/xf86dgaproto |
x11-proto/xproto" |
|
src_unpack() { |
unpack ${A} |
cd "${S}" |
epatch "${FILESDIR}"/nsc-amd-geode-lx-R6.patch |
} |
# ebuild xf86-video-nsc-2.8.2.ebuild digest |
Create and edit xorg.conf file |
Create and edit .xinitrc file |
# ROOT=/dallur emerge -avN libXaw xorg-server twm xf86-video-nsc xterm |
Run xorgconfig and configure xorg.conf |
|
# cp /usr/lib/gcc/i386-gentoo-linux-uclibc/4.1.1/libgcc_s.so.1 /dallur/usr/lib |
# cp /usr/lib/gcc/i386-gentoo-linux-uclibc/4.1.1/libgcc_s.so /dallur/usr/lib |
# cp /usr/lib/gcc/i386-gentoo-linux-uclibc/4.1.1/libstdc++.so.6 /dallur/usr/lib |
|
Install any application you want with: |
# ROOT=/dallur emerge -avN yourapplication |
# cp -Rp /dallur /tmp/ |
# cp /usr/src/linux/arch/i386/boot/bzImage /tmp/vmlinuz-dallur |
# rm -r /tmp/dallur/var/*/* /tmp/dallur/tmp/* /tmp/dallur/usr/src/* /tmp/dallur/usr/src/* |
# du -hs /tmp/dallur |
# cd /tmp/dallur && find . | cpio -H newc -o | gzip -9 > /tmp/initramfs-dallur.igz |
# dd if=/dev/zero of=/dev/sda bs=1 count=512 |
# fdisk /dev/sda |
Configure partitions as shown here: |
Command (m for help): n |
Command action |
e extended |
p primary partition (1-4) |
p |
Partition number (1-4): 1 |
First cylinder (1-1024, default 1): <enter> |
Using default value 1 |
Last cylinder or +size or +sizeM or +sizeK (1-1024, default 1024): +128M |
Command (m for help): a |
Partition number (1-4): 1 |
Command (m for help): w |
# mke2fs /dev/sda1 |
# mkdir /mnt/cflash |
# mount /dev/sda1 /mnt/cflash |
# mkdir /mnt/cflash/grub |
# cp /boot/grub/stage? /boot/grub/e2fs_stage1_5 /mnt/cflash/grub/ |
# umount /mnt/cflash |
# grub |
Configure grub as shown: |
grub |
grub> device (hd0) /dev/sda |
grub> root (hd0,0) |
grub> setup (hd0) |
grub> quit |
# mount /dev/sda1 /mnt/cflash |
# rm /mnt/cflash/grub/e2fs_stage1_5 |
|
Edit/Create /mnt/cflash/grub/menu.lst to look like: |
timeout 3 |
title Gentoo Embedded |
kernel /vmlinuz-dallur video=gxfb:640-480-24@75 |
initrd /initramfs-dallur.igz |
|
# cp /tmp/vmlinuz-dallur /tmp/initramfs-dallur.igz /mnt/cflash/ |
