On Mon, Jan 31, 2011 at 12:30 PM, Eric Cooper <[email protected]> wrote: > On Mon, Jan 31, 2011 at 04:18:30AM +0000, Luke Kenneth Casson Leighton wrote: >> in other words, you _can't_ just "run a random kernel", because when >> you start up a kernel "from scratch", the machine state is assumed to >> be from "cold boot". i.e. no ongoing DMA, no non-maskable interrupts, >> no watchdog timers, nothing. > > But that is exactly what kexec() does, apparently successfully on > most platforms, just not (yet) on the kirkwood variant I'm using.
it does?? deep joy. *sigh* ok then the only thing i can suggest is to take a mem-dump / printout of all the registers etc. at the time, from both u-boot as well as just before the kexec() call, and compare them, painstakingly, one by one. other than that: do you have access to the JTAG port at all? find out what the heck the CPU's _really_ doing? reverse-engineering the hw6915 4 years ago it was the low-level stuff that had me stumped (suspend/resume in that case) and no, on a £400 mobile phone i wasn't going to go digging up the PCB to get at the JTAG port :) l. -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected] Archive: http://lists.debian.org/[email protected]
