I am not sure where to turn on this baffling problem.
It seems that ext2fs partition layout or information on 2GB SD cards has changed over time.
I have been using an old Fedora Linux PC (Fedora Core 2.6.15) to partition SD cards and load uClinux onto them and our SBCs are quite happy booting uClinux from these cards; even 2GB SD cards.
The problem started when we started using a new Ubuntu LinuxPC (2.6.27). Our SBCs are quite happy booting uClinux from these cards ..EXCEPT for 2GB SD cards.
A SD card partitioned on the old Fedora Linux PC is unreadable on the new UbuntuPC A SD card partitioned on the UbuntuPC is READABLE on the old Fedora Linux PC Our SBCs cannot find /boot/linix.bin on a 2GB SD card prepared (partitioned & loaded with uClinux) on the new UbuntuPC Our SBCs CAN find /boot/linix.bin on a 256MB SD card prepared on the new UbuntuPC Our SBCs CAN find /boot/linix.bin on a 2GB SD card prepared on the old Fedora Linux PC
And, yes, the same scripts are used on both Linux PCs and we have taken into account the csd.rd_bl_len kludge used by 2GB SD cards to represent the greater capacity. This is why 2GB SD cards loaded on our old Fedora Linux PC happily boot on our PCs.
The SBCs use a modified dBUG monitor to boot uClinux from an SD card. The modifications to dBUG were carried out in 2005 and consisted of adding some SD card APIs and files lifted from U-boot and massaged: cmd_ext2.c, ext2fs.c, dev.c, part.c & part_dos.c.
Has anyone come across this problem? Thanks, Bob Furber _______________________________________________ uClinux-dev mailing list uClinux-dev@uclinux.org http://mailman.uclinux.org/mailman/listinfo/uclinux-dev This message was resent by uclinux-dev@uclinux.org To unsubscribe see: http://mailman.uclinux.org/mailman/options/uclinux-dev
