Difference between revisions of "User:Urjaman/Building the kernel on the Pandora"
From Pandora Wiki
(→ext2 loop file (1GiB) on an SD card) |
(→Checkout pandora-kernel) |
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| − | This is still a WIP set of notes. | + | This is still a WIP set of notes. Testing in progress. |
| + | Will add SGX and WiFi module building later. | ||
| − | |||
== Install local toolchain and git == | == 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 | sudo opkg update | ||
| − | This is untested and IIRC I needed to fiddle with the names a bit. | + | 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 | 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 | + | 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 == | == Get ext2 space == | ||
=== Choose from === | === Choose from === | ||
| − | ==== | + | ==== I run my OS from SD ==== |
| + | Make a directory in your home folder then: | ||
mkdir dev && cd dev | mkdir dev && cd dev | ||
| − | ==== ext2 formatted SD card ==== | + | ==== I have an ext2 formatted SD card ==== |
| + | Make a directory on the card then: | ||
cd /media/<ext2card> | cd /media/<ext2card> | ||
mkdir dev && cd dev | mkdir dev && cd dev | ||
| − | ==== ext2 loop file (1GiB) on | + | ==== I only have a FAT32 formatted SD card ==== |
| + | Then you can create an ext2 loop file (1GiB) on the card: | ||
cd /media/<fatcard> | cd /media/<fatcard> | ||
dd if=/dev/zero of=dev.ext2 bs=1M count=1024 | dd if=/dev/zero of=dev.ext2 bs=1M count=1024 | ||
| Line 26: | 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 && cd .. | ||
| + | This will take a moment. Go grab your chosen beverage. | ||
== Checkout and apply patches == | == Checkout and apply patches == | ||
| Line 31: | Line 41: | ||
cd pandora-kernel | cd pandora-kernel | ||
Here cross-ref against ../openpandora.oe/recipes/linux/omap3-pandora-kernel_2.6.27-pandora.bb wont hurt. | 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 | Warning: Mega-list-of-commands follows, formatted it as an sh script if needed | ||
#!/bin/bash -e | #!/bin/bash -e | ||
| Line 54: | Line 65: | ||
== Fix Makefile == | == Fix Makefile == | ||
| − | This gem is from vminko's ebuild | + | 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 | sed -i 's/?= arm-linux-/=/' Makefile | ||
| Line 65: | Line 77: | ||
== Build the kernel == | == 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 | make modules | ||
| + | and the kernel: | ||
make uImage | make uImage | ||
if you want to install modules: | if you want to install modules: | ||
sudo make modules_install | sudo make modules_install | ||
Latest 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 && cd ..
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
