On 10/08/2017 09:25 PM, p.wa...@gmx.at wrote: > Hi Hauke, > >> When the kernel gets uncompressed and is bigger than >> BZ_TEXT_START - LOADADDR it overwrote the loader which was currently >> uncompressing >> it and made the board crash. > > Currently, BZ_TEXT_START - LOADADDR = 0x80400000 - 0x80001000 = 3FF000 = > 4190208 bytes > Today's trunk brcm47xx kernel is 4069124 bytes. So increasing the address is > actually > just a preventive countermeasure for future kernels.(?) > The WRT54GL CFEs seem to use a memory area about half the size of your > WRT54GS' > So I guess, the actual problem for the WRT54GL was that the stack was smashed? > > Once my compiling machine finishes your ar71xx with kernel 4.9, I'll test > this one here :-) > > Happy to see, that this problem seems to be solved.
Hi, The stack was not a problem with my kernel, I just added it to prevent later problems, now I debugged this, I do not want to debug this again in 2 years. My vmlinux kernel file is 4277380 bytes, so bigger than the available size you calculated. The stack starts at 0x8043BF30 so there are 4435760 bytes available till my image would overwrite the stack. It does not matter where CFE is located as we do not need it any more after the loader started, we will never jump back into it and use the memory region used for CFE later also for Linux. With both patches there is now almost 6 MB space available. Hauke _______________________________________________ Lede-dev mailing list Lede-dev@lists.infradead.org http://lists.infradead.org/mailman/listinfo/lede-dev
