On 06/27/2012 10:22 AM, Florian Fainelli wrote: > Hello Rafal, > > On Wednesday 27 June 2012 09:56:32 Rafał Miłecki wrote: >> GOOD NEWS guys! :) >> >> 1) First of all, WNDR4500's CFE can run lzma compressed vmlinux. You >> can know that for example from earlier-attached official.analyze.txt. >> My analyze of trx header has shown there are only 2 images. offset0 is >> 0x1C, offset1 is 0x141a78 and offset2 is ZERO (yes!). And as explained >> earlier, at 0x1C we have hexes: 5D 00 00 01 which are early bytes >> of lzma-compressed vmlinux. >> >> So I've stared generating images skipping "loader" (small decompressor >> of lzma). Unfortunately it didn't result in any success directly. >> >> Then I've started hacking Netgear's vmlinuz-lzma. I've decompressed it >> and compressed again using my system's lzma. Guess what? My CFE >> started panicking with chk containing such a recompressed vmlinux: >> Checking crc...Loader:raw Filesys:raw Dev:nflash0.os File: Options:(null) >> Loading: PANIC: out of memory! >> raw_fileop_uninit: warning: refcnt not zero >> Entry at 0x00000000 >> >> So it gave me a tip, lzma compression is very sensitive! > > Yes it is, we have had some similar issues with bcm63xx images in order to > find > the right LZMA parameters, since both platforms use CFE, I suggest you give > them a try and see if that fixes anything for you: > https://dev.openwrt.org/browser/trunk/target/linux/brcm63xx/image/Makefile#L117
The Asus RT-ac66u also has NAND flash, a BCM4706 and there all the lzma stuff seams to be available in source code. >> 2) I've decided to ignore OpenWRT auto-generated vmlinux.lzma >> (build_dir/linux-brcm47xx/vmlinux.lzma). I've compressed vmlinux by >> myself using "lzma" from WNDR4500 official firmware source: >> ~/WNDR4500-V1.0.0.58_1.0.13_src/tools/lzma e vmlinux vmlinuz-repacked >> >> And generated trx and chk again... It worked! I've uploaded my chk >> image using tftp and CFE booted it successfully! :) > > Congrats! Thanks for working on this! Congrats, also from me. Really good work. I will try to find some time today to work on the code reading out the clocks of the SoC. Hauke _______________________________________________ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel
