On Mon, Apr 06, 2020 at 10:10:53PM +0200, Corentin Labbe wrote: > On Mon, Apr 06, 2020 at 10:37:29AM +0100, Russell King - ARM Linux admin wrote: > > On Mon, Apr 06, 2020 at 11:25:40AM +0200, Corentin Labbe wrote: > > > On Mon, Apr 06, 2020 at 10:16:00AM +0100, Russell King - ARM Linux admin wrote: > > > > On Mon, Apr 06, 2020 at 10:27:20AM +0200, Corentin Labbe wrote: > > > > > Hello > > > > > > > > > > I am trying to add the last missing Allwinner Soc in kernelci: the A80. > > > > > But this SoC does not have any way to be used in kernelci, no USB nor network in uboot. > > > > > So I have tried to fake uboot since the kernel has network support and run the new kernel via kexec. > > > > > > > > > > But kexec 2.0.18 fail to work: > > > > > kexec --force /tmp/kernel --initrd /tmp/ramdisk --dtb /tmp/dtb --command-line='console=ttyS0,115200n8 root=/dev/ram0 earlycon=uart,mmio32,0x7000000 ip=dhcp' > > > > > > > > What happens if you omit the dtb argument? > > > > > > > > > > No change without dtb > > > > > > I have also tried to add --mem-mim and --mem-max without any change. > > > I given mem according to what I saw in /proc/iomem > > > 20000000-9fffffff : System RAM > > > 20008000-207fffff : Kernel code > > > 20900000-209a0c87 : Kernel data > > > So I gave --mem-min 0x30000000 --mem-max 0x9fffffff > > > Anyway, the result is always the same. > > > > The next step is to enable the early debugging - first in the > > decompressor - add #define DEBUG to the top of > > arch/arm/boot/compressed/head.S > > > > Also enable DEBUG_LL in the kernel and use earlyprintk to see if you can > > get anything from the new kernel. > > > > I dont know what happened, but now I always get "Could not find a free area of memory of 0x86c1c0 bytes..." (even with kexec 2.0.18) > Furthermore, I have added crashkernel=128M to the cmdlist > I have verified that the reservation is working: > 20000000-9fffffff : System RAM > 20008000-207fffff : Kernel code > 20900000-209a0c87 : Kernel data > 40000000-47ffffff : Crash kernel > But even with this reservation, no change. crashkernel is only necessary if you're loading a kenrel image to be booted when the existing one has crashed. For the problem you're seeing, it's an unnecessary additional change; please drop that. You could try running kexec with debug enabled to see more information. -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTC broadband for 0.8mile line in suburbia: sync at 10.2Mbps down 587kbps up _______________________________________________ kexec mailing list kexec@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/kexec
