Hi,
On Mon, 14 Oct 2024 at 11:00, Quentin Schulz quentin.schulz@cherry.de wrote:
Hi Louis,
On 10/13/24 9:34 PM, Louis Holbrook wrote:
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(Also posted in pine64 forum https://forum.pine64.org/showthread.php?tid=19460)
In an attempt to troubleshoot failing to get generic alpine linux to run on PA64-2G-LTS, I've tried to reduce the problem to the smallest steps that are legible to me.
When booting the kernel, I get "Bad ARM64 Image Magic" I can't figure out what this means, and why it is happening. Sources I have searched seem to be board specific, and found nothing on this board. I've arrived at a point where I cannot find a way to reason further about it, so thus I am reaching out.
I am currently loading the kernel and dtb manually at the uboot prompt:
setenv bootargs loglevel=7 earlyprintk fatload mmc 0:1 0x42000000 boot/vmlinux fatload mmc 0:1 0x4a000000 boot/u-boot.dtb booti 0x42000000 - 0x4a000000
Make sure that those are absolutely NOT overlapping, i.e. you may be writing u-boot.dtb over vmlinux and thus corrupting it. I've not made the maths if this is reasonable with the addresses provided there but it's good general advice anyway. What I usually like to do is have the DTB right before the vmlinux, like 1MB before. No way a DTB is going to be bigger than that :)
I have never used vmlinux so cannot tell if you're supposed to use booti with it. I usually just get the Image or Image.gz from arch/arm64/boot and `booti` it and that should just work.
Right, that isn't actually an 'Image', so far as I am aware. However on x86 machines it seems that it sort-of is? I'm a bit unsure about why.
You can use arch/arm64/boot/Image (offhand)
I also do not exactly know if you're supposed to be able to use u-boot's DTB for Linux kernel. Eventually we want to go towards this, but I don't know if that's necessarily possible today (but that wouldn't have anything to do with the bad image).
Cheers, Quentin
Regards, Simon