Difference between revisions of "User:Urjaman/Building the kernel on the Pandora"
(→Checkout pandora-kernel) |
|||
Line 34: | Line 34: | ||
== Checkout pandora-kernel == | == Checkout pandora-kernel == | ||
git clone --depth=1 git://git.openpandora.org/pandora-kernel.git | git clone --depth=1 git://git.openpandora.org/pandora-kernel.git | ||
+ | cd pandora-kernel && git checkout --track -b pandora-27-omap1 origin/pandora-27-omap1 | ||
This will take a moment. Go grab your chosen beverage. | This will take a moment. Go grab your chosen beverage. | ||
Revision as of 02:17, 26 March 2012
This is still a WIP set of notes. Testing in progress. Will add SGX and WiFi module building later.
Contents
Install local toolchain and git
Open up a terminal if you havent already. This stuff (opkg) is currently quite dangerous and you might end up breaking your install. I recommend using an SD install for this.
sudo opkg update
This is untested and IIRC I needed to fiddle with the names a bit. You can "search" for a name with eg. with sudo opkg list | grep name
sudo opkg install gcc gcc-symlinks make binutils-dev cpp cpp-symlinks g++ \ g++-symlinks libstdc++-dev git u-boot-mkimage
Note: I did this 26.3.2012 and I needed to add --force to this opkg, and it slightly broke the install; before rebooting do this (be root before the opkg, skip the sudo) to atleast somewhat fix it:
cd /usr/lib ln -s libncursesw.so.5 libncurses.so.5
Get ext2 space
Choose from
I run my OS from SD
Make a directory in your home folder then:
mkdir dev && cd dev
I have an ext2 formatted SD card
Make a directory on the card then:
cd /media/<ext2card> mkdir dev && cd dev
I only have a FAT32 formatted SD card
Then you can create an ext2 loop file (1GiB) on the card:
cd /media/<fatcard> dd if=/dev/zero of=dev.ext2 bs=1M count=1024 mke2fs -m 0 dev.ext2 mkdir dev sudo mount -o loop dev.ext2 dev cd dev
You should now be in a folder named "dev" suitable for the job.
Checkout pandora-kernel
git clone --depth=1 git://git.openpandora.org/pandora-kernel.git cd pandora-kernel && git checkout --track -b pandora-27-omap1 origin/pandora-27-omap1
This will take a moment. Go grab your chosen beverage.
Checkout and apply patches
git clone --depth=1 git://git.openpandora.org/openpandora.oe.git cd pandora-kernel
Here cross-ref against ../openpandora.oe/recipes/linux/omap3-pandora-kernel_2.6.27-pandora.bb wont hurt.
Warning: Mega-list-of-commands follows, formatted it as an sh script if needed
#!/bin/bash -e patch -Np1 < ../openpandora.oe/recipes/linux/omap3-pandora-kernel/0001-Add-EHCI-patch-suggested-by-Steven-Kipisz.patch patch -Np1 < ../openpandora.oe/recipes/linux/omap3-pandora-kernel/0002-Add-missing-define-to-EHCI-OMAP.c.patch patch -Np1 < ../openpandora.oe/recipes/linux/omap3-pandora-kernel/no-empty-flash-warnings.patch patch -Np1 < ../openpandora.oe/recipes/linux/omap3-pandora-kernel/oprofile-0.9.3.armv7.diff patch -Np1 < ../openpandora.oe/recipes/linux/omap3-pandora-kernel/no-cortex-deadlock.patch patch -Np1 < ../openpandora.oe/recipes/linux/omap3-pandora-kernel/read_die_ids.patch patch -Np1 < ../openpandora.oe/recipes/linux/omap3-pandora-kernel/fix-install.patch patch -Np1 < ../openpandora.oe/recipes/linux/omap3-pandora-kernel/mru-fix-timings.diff patch -Np1 < ../openpandora.oe/recipes/linux/omap3-pandora-kernel/mru-fix-display-panning.diff patch -Np1 < ../openpandora.oe/recipes/linux/omap3-pandora-kernel/mru-make-dpll4-m4-ck-programmable.diff patch -Np1 < ../openpandora.oe/recipes/linux/omap3-pandora-kernel/mru-improve-pixclock-config.diff patch -Np1 < ../openpandora.oe/recipes/linux/omap3-pandora-kernel/mru-make-video-timings-selectable.diff patch -Np1 < ../openpandora.oe/recipes/linux/omap3-pandora-kernel/mru-enable-overlay-optimalization.diff patch -Np1 < ../openpandora.oe/recipes/linux/omap3-pandora-kernel/dvb-fix-dma.diff patch -Np1 < ../openpandora.oe/recipes/linux/omap3-pandora-kernel/0001-Removed-resolution-check-that-prevents-scaling-when.patch patch -Np1 < ../openpandora.oe/recipes/linux/omap3-pandora-kernel/0001-Implement-downsampling-with-debugs.patch patch -Np1 < ../openpandora.oe/recipes/linux/omap3-pandora-kernel/musb-rxtx.patch patch -Np1 < ../openpandora.oe/recipes/linux/omap3-pandora-kernel/squashfs/0006-SquashFS-Backport-SquashFS4-to-our-2.6.27-tree.patch patch -Np1 < ../openpandora.oe/recipes/linux/omap3-pandora-kernel/aufs2/0007-AUFS2-Add-latest-AUFS2-in-tree-code-for-2.6.27.patch
Fix Makefile
This gem is from vminko's ebuild. It will remove the cross-compiling prefix from the Makefile, so that it will use gcc instead of arm-linux-gcc.
sed -i 's/?= arm-linux-/=/' Makefile
Configure kernel
cp ../openpandora.oe/recipes/linux/omap3-pandora-kernel/defconfig .config make oldconfig
if you want to change configuration:
make menuconfig
You will need to change the configuration if you want the kernel name to match stock, disable General Setup -> Automatically append version information to the version string .
Build the kernel
This will take time and CPU power, so if you're like me, dont forget to overclock.
Modules, if desired:
make modules
and the kernel:
make uImage
if you want to install modules:
sudo make modules_install