Jivin Yuan-Lung Li lays it down ...
> Dear DavidM,
> I have other questions about the romfs.2.4.x.gz on the website
> http://www.uclinux.org/pub/uClinux/utilities/armulator/
>
> 1. What version of toolchain used to build the romfs.2.4.x?
Almost certainly something very old. gcc-2.95.3 based, probably this
one:
http://www.uclinux.org/pub/uClinux/arm-elf-tools/arm-elf-tools-20030314.sh
> 2. What kind of vendor setting used to build the romfs.2.4.x? GDB/ARMulator
> or GDB/ARMulator-EB?
Follow the ARMulator thread in this article:
http://www.ucdot.org/archive/tb/tb20020807.shtml
This was done using uClinux-dist-20020701.
All the settings should be in the vendors/GDB/Armulator directory. Edit
config.arch to enable/disable XIP.
> 3. Any other particular setting in menuconfigs to affect the romfs.2.4.x?
>
> Thank you in advance for kindly replying. :-)
All in the above, sorry for a tardy response, vacation time ;-)
Cheers,
Davidm
> 2008/12/27 Yuan-Lung Li <dra...@gmail.com>
>
> > 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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--
David McCullough, david_mccullo...@securecomputing.com, Ph:+61 734352815
Secure Computing - SnapGear http://www.uCdot.org http://www.snapgear.com
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