These are some notes regarding PS3 Linux (how to boot it)
- You need Rebug/Rebug Toolbox for that
- You need the dtbImage file on a USB drive (plugged on the right-most USB port). Resize VNAND, Install petitboot.
- According to this doc
dtbImage.%: Similar to zImage, except device tree blob is embedded
inside the image instead of provided by firmware. The
output image file can be either an elf file or a flat
binary depending on the platform.
dtbImages are used on systems which do not have an
interface for passing a device tree directly.
dtbImages are similar to simpleImages except that
dtbImages have platform specific code for extracting
data from the board firmware, but simpleImages do not
talk to the firmware at all.
PlayStation 3 support uses dtbImage. So do Embedded
Planet boards using the PlanetCore firmware. Board
specific initialization code is typically found in a
file named arch/powerpc/boot/<platform>.c; but this
can be overridden by the wrapper script.
Which is this file here
Also interesting for future Wii research https://elixir.bootlin.com/linux/latest/source/arch/powerpc/boot/wii.c
- How do I build this dtbImage file?
This may be interesting:
The boot wrapper is built from the makefile in arch/powerpc/boot/Makefile and
it uses the wrapper script (arch/powerpc/boot/wrapper) to generate target
image. The details of the build system is discussed in the next section.
...
The 'wrapper
script' (found in arch/powerpc/boot/wrapper) is called by the Makefile and
is responsible for selecting the correct wrapper bits for the image type.
...
However, it is worth mentioning that the script
uses the -p (platform) argument as the main method of deciding which wrapper
bits to compile in. Look for the large 'case "$platform" in' block in the
middle of the script. This is also the place where platform specific fixups
can be selected by changing the link order.
Resources for future research