===== (linux) Kernel notes =====


these are the linux notes, for xnu(darwin) see [[OsX Kernel]]

----


==== some notes on building + installing linux kernels for debian-powerpc ====

required packages  

  * kernel-source
  * kernel-package
  * ?


rsync 
  * from BenH tree (ppc maintainer?) 
    * rsync -arvz --delete rsync.penguinppc.org::linux-2.4-benh /usr/src/.
  * from mvista linuxppc tree
    * rsync -avz --delete source.mvista.com::linuxppc_2_4(_devel) /usr/src/.



optional packages 

  * mol-modules-source (for mac-on-linux support)




=== example using 2.4.12 kernel ===

<file>
bash# cd /usr/src/kernel-source-2.4.12
bash# make xconfig         [alt: make menuconfig]
 (OSS+ dma support compiled in, persistent dma buffers)
bash# make-kpkg clean
bash# make-kpkg --added_modules mol --revision=2.4.12.zzk kernel_image
  (wait for kernel-image .deb to be built)
bash# cd ..
bash# dpkg -i kernel-image-2.4.12_2.4.12.zzk_powerpc.deb
  (installs)
bash# mount -t hfs /dev/hda11 /mnt/mould/
bash# cp /boot/vmlinux-2.4.12 /mnt/mould/Systemordner/Linux\ Kernels/.
bash# reboot
  (change default kernel)

or the kernel + modules images can be built/installed seperately

bash# make-kpkg --revision 2.4.12.zzk kernel_image
   (then install the .deb as above)

bash# make-kpkg modules_image
   (then install the .deb as above)

</file>

==== cross compiling an ARM-linux kernel ====

  * see  [[Cross Compiler]]  for toolchain notes
  * reference -> http://www.arm.linux.org.uk/docs/kerncomp.shtml


<file>
# make menuconfig
# make dep
# make bzImage
# make modules
# make modules_install INSTALL_MOD_PATH=/usr/src/arm/
</file>

=== installing the kernel + modules ===

press Enter to enter the bootloader. You should see the IBoot> prompt.


Initialize the RAM with the command

<file>
setbyte 0xc0000000 0xff 0x1000000 
</file>

Download the kernel from the TFTP server with the command

<file>
download tftp:<IP address of the TFTP server> <kernel-image-path> 0xc0000000
</file>

Copy the kernel from RAM to flash memory with the command

<file>
flash 0x60000 0xc0000000 0x100000
</file>

When the image has finished flashing, type

<file>
boot
</file>


see [[Cerf Notes]]  (or  [[IPaq Notes]] ) for more instructions on transfering