[Ipodlinux-devel] working kernel from ppc

[Steven L. <sl...@uc...>]

hello,

here is a list of hacks that i had to do to build a kernel for the ipod on my
ppc.  i hope this helps other people, and hopefully some of it will get
generalized into the main release.

1) get version 1.1 of the patch_fw.c which supports big endian machines

2) get cvs module 'toolchain' from cvs.uclibc.org:/var/cvs.  cd to gcc-2.95,
edit Makefile accordingly, and 'make'.  gcc-3.2.1 does not work (it makes a
bogus kernel).  after a long time this will give you compiler/toolchain and
uclibc.  add (installation dir)/bin to your PATH.

3) unpack 2.4.20 kernel, apply uClinux-2.4.20-uc0.diff.gz, cvs co the
ipodlinux stuff (directions on site).  make sure when you cvs co you remove
the files it doesn't want to overwrite so that it overwrites them:-p

4) edit kernel Makefile.  line 28:  set CROSS_COMPILE to 'arm-uclibc-'.  line
39, set LD = $(CROSS_COMPILE)ld --no-warn-mismatch'.

5) drivers/char/keyboard.c +287 -- whoever wrote this is on something
illegal.  just comment out the whole bit (!define() is not defined,
console_tasklet is not defined...) from before the #ifdef to after the
#endif.

6)  arch/armnommu/kernel/setup.c +418 -- this should read '__initdata' where
it now reads '__init'.

7) now we can cp the ipod def-config to .config, make oldconfig, and make
dep.  then make, make modules.  might wanna add the appropriate
CONFIG_IEEE1394*=m lines to .config first, though.

8) follow instructions on site for backing up, patching, and installing
firmware.  my ipod boots:)  my friend has replicated this.

9) somehow get umsdos to /work/.  still on this step.

note insmod sbp2 sbp2_max_speed=0 helped a lot to reduce crashes while dding,
and is still 100megs/sec (faster than the disk in the 'pod by far).

hope this is of help, feel free to ask me any questions.

Steven