On Fri, Jul 22, 2016 at 10:40:11AM -0400, Sandy Patterson wrote: > Commit c09d29057a and df120142f36 break kernel loading on rock2 board. > > console output: > Starting kernel ... > > ### ERROR ### Please RESET the board ### > > This reverts commit c09d29057ab0b04db0857d319c6bff74de31b9c3. > > Conflicts: > arch/arm/cpu/armv7/cache_v7.c > arch/arm/cpu/armv7/cache_v7_asm.S > > Signed-off-by: Sandy Patterson <apatter...@sightlogix.com>
So, we cannot do this. The problem is two-fold. First, newer GCCs will cause failure to boot with the way the code was, which is how we found this problem. The second is that after some offline conversations with ARM Ltd people (and some other smart folks too, these operations cannot safely be done in C, there's just no way. So we borrowed what the kernel does. You need to figure out what behavior the (old?) kernel is relying on and either emulate that with a flag (like sunxi does, or at least did, at one point for some other issues of correct behavior vs existing kernels) or just not support those older kernels. -- Tom
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