summaryrefslogtreecommitdiff
path: root/common/cmd_vfd.c
Commit message (Collapse)AuthorAgeLines
* Make sure that argv[] argument pointers are not modified.Wolfgang Denk2010-07-04-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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 Denk2009-06-12-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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 Tyser2009-01-28-1/+1
| | | | | | | | 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>
* cmd_vfd: Move conditional compilation to MakefileJean-Christophe PLAGNIOL-VILLARD2008-09-10-2/+0
| | | | Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
* Big white-space cleanup.Wolfgang Denk2008-05-21-4/+4
| | | | | | | | | | | This commit gets rid of a huge amount of silly white-space issues. Especially, all sequences of SPACEs followed by TAB characters get removed (unless they appear in print statements). Also remove all embedded "vim:" and "vi:" statements which hide indentation problems. Signed-off-by: Wolfgang Denk <wd@denx.de>
* common/: Remove lingering references to CFG_CMD_* symbols.Jon Loeliger2007-07-10-1/+1
| | | | | | | | Fixed some broken instances of "#ifdef CMD_CFG_IDE" too. Those always evaluated TRUE, and thus were always compiled even when IDE really wasn't defined/wanted. Signed-off-by: Jon Loeliger <jdl@freescale.com>
* common/cmd_[p-x]*: Remove obsolete references to CONFIG_COMMANDS.Jon Loeliger2007-07-08-1/+1
| | | | Signed-off-by: Jon Loeliger <jdl@freescale.com>
* common/cmd_[i-z]* : Augment CONFIG_COMMANDS tests with defined(CONFIG_CMD_*).Jon Loeliger2007-07-04-1/+1
| | | | | | | | | | | | | | This is a compatibility step that allows both the older form and the new form to co-exist for a while until the older can be removed entirely. All transformations are of the form: Before: #if (CONFIG_COMMANDS & CFG_CMD_AUTOSCRIPT) After: #if (CONFIG_COMMANDS & CFG_CMD_AUTOSCRIPT) || defined(CONFIG_CMD_AUTOSCRIPT) Signed-off-by: Jon Loeliger <jdl@freescale.com>
* * Use "-fPIC" instead of "-mrelocatable" to prevent problems withwdenk2003-11-17-2/+0
| | | | | | | | | | | | | recent tools * Add checksum verification to 'imls' command * Add bd_info fields needed for 4xx Linux I2C driver * Patch by Martin Krause, 4 Nov. 2003: Fix error in cmd_vfd.c (TRAB board: "vfd /1" shows now only one Bitmap) * Print used network interface when CONFIG_NET_MULTI is set
* * Patch by Martin Krause, 11 Sep 2003:wdenk2003-09-11-2/+4
| | | | | | add burn-in tests for TRAB board * Enable instruction cache on MPC5200 board
* Patch by Kenneth Johansson, 30 Jun 2003:wdenk2003-07-01-2/+2
| | | | get rid of MK_CMD_ENTRY macro; update doc/README.command
* * Code cleanup:wdenk2003-06-27-0/+7
| | | | | | | | | - 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)
* Add support for arbitrary bitmaps for TRAB's VFD command;wdenk2003-05-21-7/+19
| | | | | allow to pass boot bitmap addresses in environment variables; allow for zero boot delay
* * Add support for arbitrary bitmaps for TRAB's VFD commandwdenk2003-05-20-17/+20
| | | | | * Patch by Christian Geißinger, 19 May 2002: On TRAB: wait until the dummy byte has been completely sent
* Patch by Guillaume Alexandre,, 04 Nov 2002:wdenk2002-11-04-1/+1
| | | | | | | | Improve PCI access on 32-bits Compact PCI bus Adjust VFD initialization on TRAB Cleanup RRvision video code
* Initial revisionwdenk2002-11-01-0/+84