[U-Boot-Users] Linking problem on new port -- SOLVED

Richard Danter richard.danter at ntlworld.com
Wed Jun 29 15:29:16 CEST 2005

Richard Danter wrote:
> Hi all,
> I have been using U-Boot for a while, but this is the first time I have 
> tried to port it to a new board myself, so please consider me a newbie!
> I have a problem linking U-Boot for my new board. I know this is my 
> fault, I have missed something in the setup, can anyone point out what 
> it is that is missed?
> The compile stage works, this is what I see when I try to link:
> ----
> ppc_74xx-ld -Bstatic -T 
> /usr/home/wb231-le11/Workspace/u-boot/board/ppmc7xx/u-boot.lds -Ttext -n 
> $UNDEF_SYM cpu/74xx_7xx/start.o \
>                 --start-group lib_generic/libgeneric.a 
> board/ppmc7xx/libppmc7xx.a cpu/74xx_7xx/lib74xx_7xx.a lib_ppc/libppc.a 
> fs/cramfs/libcramfs.a fs/fat/libfat.a fs/fdos/libfdos.a 
> fs/jffs2/libjffs2.a fs/reiserfs/libreiserfs.a fs/ext2/libext2fs.a 
> net/libnet.a disk/libdisk.a rtc/librtc.a dtt/libdtt.a 
> drivers/libdrivers.a drivers/sk98lin/libsk98lin.a post/libpost.a 
> post/cpu/libcpu.a common/libcommon.a --end-group -L 
> /opt/eldk3.1.1/usr/bin/../lib/gcc-lib/ppc-linux/3.3.3/m7400/pic -lgcc \
>                 -Map u-boot.map -o u-boot
> ppc_74xx-ld: invalid hex number `-n'
> ----
> The $UNDEF_SYM is obviously wrong (I think!).
> I am not surprised if I have missed things, so far I have written just a 
> skeleton for the board support, even if it links it won't run yet. I 
> have been adding things as needed, but I just can't find what is missing 
> here. Any suggestions?

Found it! I did not have a definition for TEXT_BASE.

> I'd like to ask another question too whilst I'm here. I have a single 
> bank of Flash running from 0xFFC00000 to 0xFFFFFFFF. I want U-Boot to be 
> placed at 0xFFF00000 with the entry point at 0xFFF00100. Am I right to 
> set the following? If not, how do I achieve this?
> #define CFG_FLASH_BASE   0xFFC00000
> #define CFG_MONITOR_BASE 0xFFF00000
> Is this related to the problem above?

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