On Sun, 2016-06-05 at 18:09 +0200, Christian Zigotzky wrote: > All, > > I need an answer because I think Darren's guess is correct. It isn't a > problem in the pci code. I replaced the file head_64.S that Darren > mentioned with the one from the kernel 4.6 and it compiled but > unfortunately it doesn't boot. We know "head_64.S" is one file for the > early boot phase but I think there are some other files.
There's lots of files used in the early boot, you can't revert individual files and expect it to work. > On 28 May 2016 at 8:51 PM, Darren Stevens wrote: > > You can see from this that the 4.7 kernel hangs right after the booting > > linux > > via __start(), whereas in the 4.4 there's about 29 lines of output before it > > gets to the Initialised io_base_virt printk in our patch. If the last thing you see is "booting linux via __start()" that means the kernel crashed early, before it could detect and initialise the console. Do you have a serial or other console in that machine at a known location? If so you can hard-code the kernel to use that console, which means you can get messages earlier in boot. See udbg_early_init() for starters. cheers _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
