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* Make sure that argv[] argument pointers are not modified.Wolfgang Denk2010-07-04-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* General help message cleanupWolfgang Denk2009-06-12-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Many of the help messages were not really helpful; for example, many commands that take no arguments would not print a correct synopsis line, but "No additional help available." which is not exactly wrong, but not helpful either. Commit ``Make "usage" messages more helpful.'' changed this partially. But it also became clear that lots of "Usage" and "Help" messages (fields "usage" and "help" in struct cmd_tbl_s respective) were actually redundant. This patch cleans this up - for example: Before: => help dtt dtt - Digital Thermometer and Thermostat Usage: dtt - Read temperature from digital thermometer and thermostat. After: => help dtt dtt - Read temperature from Digital Thermometer and Thermostat Usage: dtt Signed-off-by: Wolfgang Denk <wd@denx.de>
* Command usage cleanupPeter Tyser2009-01-28-2/+2
| | | | | | | | Remove command name from all command "usage" fields and update common/command.c to display "name - usage" instead of just "usage". Also remove newlines from command usage fields. Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
* Standardize command usage messages with cmd_usage()Peter Tyser2009-01-28-1/+1
| | | | Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
* rename CFG_ macros to CONFIG_SYSJean-Christophe PLAGNIOL-VILLARD2008-10-18-1/+1
| | | | Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
* allow ports to override go behaviorMike Frysinger2008-04-18-28/+5
| | | | | | Split the arch-specific logic out of the common go code and into a dedicated weak function called do_go_exec() that lives in cpu directories. This will need review from i386/nios people to make sure I didn't break them.
* disable caches before booting an app for Blackfin appsMike Frysinger2008-04-13-14/+26
| | | | | | | | | | | | It isn't generally save to execute applications outside of U-Boot with caches enabled due to the way the Blackfin processor handles caches (requires software assistance). This patch disables caches before booting an ELF or just booting raw code. The previous discussion on the patch was that we wanted to use weaks instead, but that proved to not be feasible when multiple symbols are involved, which puts us back at the ifdef solution. I've minimized the ugliness by moving the setup step outside of the main function. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Undo commit 3033ebb2: reset command does not take any argumentsWolfgang Denk2007-01-13-1/+1
| | | | | | Haiying Wang's modification to the reset command was broken, undo it. Signed-off-by: Wolfgang Denk <wd@denx.de>
* Allow args on reset command.Haiying Wang2006-05-26-1/+1
| | | | Signed-off-by: Jon Loeliger <jdl@jdl.com>
* GCC-4.x fixes: clean up global data pointer initialization for all boards.Wolfgang Denk2006-03-31-5/+3
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* * Patch by Scott McNutt, 04 Oct 2003:wdenk2003-10-08-0/+7
| | | | | | | | | | | | | | | | | | - add support for Altera Nios-32 CPU - add support for Nios Cyclone Development Kit (DK-1C20) * Patch by Steven Scholz, 29 Sep 2003: - A second parameter for bootm overwrites the load address for "Standalone Application" images. - bootm sets environment variable "filesize" to the resulting (uncompressed) data length for "Standalone Application" images when autostart is set to "no". Now you can do something like if bootm $fpgadata $some_free_ram ; then fpga load 0 $some_free_ram $filesize fi * Patch by Denis Peter, 25 Sept 2003: add support for the MIP405 Rev. C board
* * Implement new mechanism to export U-Boot's functions to standalonewdenk2003-07-24-1/+10
| | | | | | | | applications: instead of using (PPC-specific) system calls we now use a jump table; please see doc/README.standalone for details * Patch by Dave Westwood, 24 Jul 2003: added support for Unity OS (a proprietary OS)
* Patch by Kenneth Johansson, 30 Jun 2003:wdenk2003-07-01-4/+4
| | | | get rid of MK_CMD_ENTRY macro; update doc/README.command
* Fix some missing commands, cleanup header fileswdenk2003-06-29-1/+0
| | | | (autoscript, bmp, bsp, fat, mmc, nand, portio, ...)
* * Code cleanup:wdenk2003-06-27-1098/+16
| | | | | | | | | - remove trailing white space, trailing empty lines, C++ comments, etc. - split cmd_boot.c (separate cmd_bdinfo.c and cmd_load.c) * Patches by Kenneth Johansson, 25 Jun 2003: - major rework of command structure (work done mostly by Michal Cendrowski and Joakim Kristiansen)
* Patches by Robert Schwebel, 14 Jun 2003:wdenk2003-06-19-2/+16
| | | | | | | - add support for Logotronic DL datalogger board - cleanup serial line after kermit binary download - add debugX macro (debug level support) - update mach-types.h to latest arm.linux.org.uk master list.
* PPC405EP support added.stroese2003-05-23-2/+2
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* Patch by Christophe Lindheimer, 20 May 2003:wdenk2003-05-20-1/+4
| | | | allow the use of CFG_LOADS when CFG_NO_FLASH is set
* Prepare for 0.3.0 releasewdenk2003-04-08-2/+2
| | | | | | * Add support for Purple Board (MIPS64 5Kc) * Add support for MIPS64 5Kc CPUs
* * Patch by Martin Winistoerfer, 23 Mar 2003wdenk2003-03-31-1/+1
| | | | | | | | | - Add port to MPC555/556 microcontrollers - Add support for cmi customer board with Intel 28F128J3A, 28F320J3A or 28F640J3A flash. * Patch by Rick Bronson, 28 Mar 2003: - fix common/cmd_nand.c
* * Patch by Arun Dharankar, 24 Mar 2003:wdenk2003-03-31-4/+15
| | | | | | | | | | - add threads / scheduler example code * Add patches by Robert Schwebel, 31 Mar 2003: - add ctrl-c support for kermit download - align bdinfo output on ARM * Add CPU ID, version, and clock speed for INCA-IP
* * Patch by Rick Bronson, 16 Mar 2003:wdenk2003-03-26-24/+22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Add support for Atmel AT91RM9200DK w/NAND * Patches by Robert Schwebel, 19 Mar 2003: - use arm-linux-gcc as default compiler for ARM - fix i2c fixup code - fix missing baudrate setting - added $loadaddr / CFG_LOAD_ADDR support to loadb - moved "ignoring trailing characters" _before_ u-boot wants to print out diagnostics messages; removes bogus characters at the end of transmission * Patch by John Zhan, 18 Mar 2003: Add support for SinoVee Microsystems SC8xx boards * Patch by Rolf Offermanns, 21 Mar 2003: ported the dnp1110 related changes from the current armboot cvs to current u-boot cvs. smc91111 does not work. problem marked in smc91111.c, grep for "FIXME". * Patch by Brian Auld, 25 Mar 2003: Add support for STM flash chips on ebony board * Add PCI support for MPC8250 Boards (PM825 module) * Patch by Stefan Roese, 25 Mar 2003:
* Add PCI support for MPC8250 Boards (PM825 module)wdenk2003-03-25-2/+31
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* Initial revisionwdenk2002-11-03-0/+1103
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