On Thu, Jul 11, 2013 at 03:22:49PM -0600, Chris Friesen wrote: > On 07/11/2013 02:55 PM, Chris Friesen wrote: > >Hi, > > > >I'm running 2.6.34 with kexec 2.0.1 on a Freescale p5020-based system > >with 8GB of memory. (It's an embedded system and I can't do much > >about the fact that it's using older software.) > > I should probably clarify this...I may be able to update kexec, I > can't update the kernel but I can backport more recent code if > necessary. > > Looking at the version of kexec that I have, it seems like where x86 > uses "memmap=" to specify the memory map usable by the capture > kernel, powerpc does something different. >From memory, it's been years, on powerpc we add properties to the memory nodes in the device tree that specify which memory is usable. The properties are called "linux,usable-memory", and in modern kernels they are read in early_init_dt_scan_memory(). cheers
