Dear all, I have search the solution for this problem about 2 months... Here is my environment:
Toolchain: arm-linux-tools-20070808.tar.gz fownloaded from http://ftp.snapgear.org/pub/snapgear/tools/arm-linux/arm-linux-tools-20070808.tar.gz uClinux Distribution: uClinux-dist-20080808.tar.gz downloaded from http://www.uclinux.org/pub/uClinux/dist/uClinux-dist-20080808.tar.bz2 Now I got stuck on the booting after /bin/init running. Seems the init launch the sash shell and then do_rc in the /etc/rc in the romfs. After first command "hostname XXXX" executed, the program counter goes some invalid place. I am using the non-XIP version of kernel. I did some trial as below: 1. replace the first command as "ls /bin" or "cat /etc/motd", the main function of them works well but the platform dead after return. 2. I download the romfs "romfs.2.4.x" from http://www.uclinux.org/pub/uClinux/utilities/armulator/romfs.2.4.x.gz The OS start and I see the promt!!! 3. I use the arm-linux-flthdr to check the binary in "romfs.2.4.x" every bFlt in /bin has the header below: /mnt/bin/init Magic: bFLT Rev: 4 Build Date: not specified Entry: 0x50 Data Start: 0x3050 Data End: 0x33b0 BSS End: 0x48b0 Stack Size: 0x1000 Reloc Start: 0x33b0 Reloc Count: 0x94 Flags: 0x1 ( Load-to-Ram ) 4. I also check the binaries in my romfs directory, evey bFlt in romfs/bin has the header below: romfs/bin/init Magic: bFLT ..... Flags: 0x2 ( Has-PIC-GOT ) 5. modifying the "vendors/config/armnommu/config.arch" to make the LDFLAGS+= -Wl,-elf2flt="-r", the build result of the romfs bFlt as below: romfs/bin/init Magic: bFLT ......... Flags: 0x3 ( Load-to-Ram Has-PIC-GOT ) The romfs still made my platform dead in nasty place. 6. I have trace many discussion, some kind like "arm-linux-flthdr -r romfs/init", the result is the same as trial number 5. How can I build the romfs with the bFlt in pure "Load-to-Ram"(aka the Flags:0x1)? Many thanks for any idea and replying. Drag
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