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* Switch from archive libraries to partial linkingSebastien Carlier2010-11-17-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* config.mk cleanup: drop "-I$(TOPDIR)/board" entriesWolfgang Denk2010-10-18-9/+0
| | | | | | | | | After the recent cleanups, a number of config.mk files consist only of a "PLATFORM_CPPFLAGS += -I$(TOPDIR)/board" entry whih is not needed. Remove such entries. In most cases, that means that the whole config.mk file can be removed. Signed-off-by: Wolfgang Denk <wd@denx.de>
* Makefile: move all Power Architecture boards into boards.cfgWolfgang Denk2010-10-18-17/+1
| | | | | | | | | | Clean up Makefile, and drop a lot of the config.mk files on the way. We now also automatically pick all boards that are listed in boards.cfg (and with all configurations), so we can drop the redundant entries from MAKEALL to avoid building these twice. Signed-off-by: Wolfgang Denk <wd@denx.de>
* Rename TEXT_BASE into CONFIG_SYS_TEXT_BASEWolfgang Denk2010-10-18-5/+6
| | | | | | | | | | | | The change is currently needed to be able to remove the board configuration scripting from the top level Makefile and replace it by a simple, table driven script. Moving this configuration setting into the "CONFIG_*" name space is also desirable because it is needed if we ever should move forward to a Kconfig driven configuration system. Signed-off-by: Wolfgang Denk <wd@denx.de>
* cmd_usage(): simplify return code handlingWolfgang Denk2010-07-24-14/+7
| | | | | | | | | | | | | | | | Lots of code use this construct: cmd_usage(cmdtp); return 1; Change cmd_usage() let it return 1 - then we can replace all these ocurrances by return cmd_usage(cmdtp); This fixes a few places with incorrect return code handling, too. Signed-off-by: Wolfgang Denk <wd@denx.de>
* Make sure that argv[] argument pointers are not modified.Wolfgang Denk2010-07-04-11/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The hush shell dynamically allocates (and re-allocates) memory for the argument strings in the "char *argv[]" argument vector passed to commands. Any code that modifies these pointers will cause serious corruption of the malloc data structures and crash U-Boot, so make sure the compiler can check that no such modifications are being done by changing the code into "char * const argv[]". This modification is the result of debugging a strange crash caused after adding a new command, which used the following argument processing code which has been working perfectly fine in all Unix systems since version 6 - but not so in U-Boot: int main (int argc, char **argv) { while (--argc > 0 && **++argv == '-') { /* ====> */ while (*++*argv) { switch (**argv) { case 'd': debug++; break; ... default: usage (); } } } ... } The line marked "====>" will corrupt the malloc data structures and usually cause U-Boot to crash when the next command gets executed by the shell. With the modification, the compiler will prevent this with an error: increment of read-only location '*argv' N.B.: The code above can be trivially rewritten like this: while (--argc > 0 && **++argv == '-') { char *arg = *argv; while (*++arg) { switch (*arg) { ... Signed-off-by: Wolfgang Denk <wd@denx.de> Acked-by: Mike Frysinger <vapier@gentoo.org>
* ppc: Remove board-specific command table relocation fixupsPeter Tyser2009-10-03-32/+0
| | | | Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
* digsy_mtc: Add delay in SPI transfers to the companion controller.Detlev Zundel2009-08-09-20/+27
| | | | | | | While at it, remove initialization of variables which will be set before usage in all cases. Signed-off-by: Detlev Zundel <dzu@denx.de>
* digsy_mtc: minor fixes for mtc command helpAnatolij Gustschin2009-08-09-5/+6
| | | | | | | | | | Add mtc state subcommand description to the help of mtc command. Remove some newlines in description of commands for proper help formating. Signed-off-by: Anatolij Gustschin <agust@denx.de>
* digsy_mtc: Add mtc state command.Grzegorz Bernacki2009-08-09-0/+31
| | | | Signed-off-by: Grzegorz Bernacki <gjb@semihalf.com>
* Coding style cleanup; update CHANGELOGWolfgang Denk2009-07-07-15/+15
| | | | Signed-off-by: Wolfgang Denk <wd@denx.de>
* digsy MTC: Add 'mtc' command.Grzegorz Bernacki2009-06-14-1/+413
| | | | | | | | | | New command allows to: o check FW version o set LED status o set digital output status o get digital input status Signed-off-by: Grzegorz Bernacki <gjb@semihalf.com>
* digsy MTC: Add SPI support.Grzegorz Bernacki2009-06-14-0/+10
| | | | Signed-off-by: Grzegorz Bernacki <gjb@semihalf.com>
* Update CHANGELOG, coding style cleanup.Wolfgang Denk2009-04-05-2/+0
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* Add support for the digsy MTC board.Grzegorz Bernacki2009-03-20-0/+423
This is the InterControl custom device based on the MPC5200B chip. Signed-off-by: Grzegorz Bernacki <gjb@semihalf.com>