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u-boot/board/sandpoint
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Sebastien Carlier 6d8962e814 Switch from archive libraries to partial linking 
Before this commit, weak symbols were not overridden by non-weak symbols
found in archive libraries when linking with recent versions of
binutils.  As stated in the System V ABI, "the link editor does not
extract archive members to resolve undefined weak symbols".

This commit changes all Makefiles to use partial linking (ld -r) instead
of creating library archives, which forces all symbols to participate in
linking, allowing non-weak symbols to override weak symbols as intended.
This approach is also used by Linux, from which the gmake function
cmd_link_o_target (defined in config.mk and used in all Makefiles) is
inspired.

The name of each former library archive is preserved except for
extensions which change from ".a" to ".o".  This commit updates
references accordingly where needed, in particular in some linker
scripts.

This commit reveals board configurations that exclude some features but
include source files that depend these disabled features in the build,
resulting in undefined symbols.  Known such cases include:
- disabling CMD_NET but not CMD_NFS;
- enabling CONFIG_OF_LIBFDT but not CONFIG_QE.

Signed-off-by: Sebastien Carlier <sebastien.carlier@gmail.com>
2010-11-17 21:02:18 +01:00
..
dinkdl Initial revision 2001-10-15 21:41:43 +00:00
early_init.S Replace CONFIG_SYS_GBL_DATA_SIZE by auto-generated value 2010-10-26 21:05:30 +02:00
flash.c rename CFG_ macros to CONFIG_SYS 2008-10-18 21:54:03 +02:00
Makefile Switch from archive libraries to partial linking 2010-11-17 21:02:18 +01:00
README Initial revision 2002-11-02 22:58:18 +00:00
sandpoint.c rename CFG_ macros to CONFIG_SYS 2008-10-18 21:54:03 +02:00
speed.h Big white-space cleanup. 2008-05-21 00:14:08 +02:00

README 

This port of U-Boot will run on a Motorola Sandpoint 3 development
system equipped with a Unity X4 PPMC card (MPC8240 CPU) only. It is a
snapshot of work in progress and far from being completed. In order
to run it on the target system, it has to be downloaded using the
DINK32 monitor program that came with your Sandpoint system. Please
note that DINK32 does not accept the S-Record file created by the
U-Boot build process unmodified, because it contains CR/LF line
terminators. You have to strip the CR characters first. There is a
tiny script named 'dinkdl' I created for this purpose.

The Sandpoint port is based on the work of Rob Taylor, who does not
seem to maintain it any more. I can be reached by mail as
tkoeller@gmx.net.

Thomas Koeller