On 07/24/2017 11:54 AM, Felix Fietkau wrote:
On 2017-07-24 20:09, Alexandru Gagniuc wrote:
On 07/24/2017 01:42 AM, Felix Fietkau wrote:
[snip]
I think the most sensible way would be to change the kernel to support
load_addr == entry_point. This could be achieved by adding a small
assembly stub that gets linked to the beginning of the kernel image
which jumps to the real entry entry point.
Some other architectures, e.g. MIPS, have been doing this for a long
time. Is it feasible on ARC as well?
I'm not aware of any technical reason as to why it can't be done. I do
not know why the linker sections are arranged the way they are. My guess
is the decision was fairly arbitrary. At the same time, I don't get to
make those decisions.
Why don't you get to make those decisions?
I meant it doesn't make much sense to jump on linux-snps-arc and propose
changing the linker layout as long as I don't have a strong
understanding of why it was done in a specific way.
I understand from your answer that there is no way to have the LEDE
buildsystem generate the correct images without changing the kernel
entry point, right?
We could extend the build system to add support for that, but I would
strongly prefer to fix it in the kernel instead.
I don't think that will be necessary. The end goal is to boot the system
from SPI flash, so a squashfs image might be in order as the final
solution. I can have two device rules for the time being.
Alex
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