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* Convert cmd_usage() calls in common to use a return valueSimon Glass2012-03-061-1/+1
| | | | | | | | | Change all files in common/ to use CMD_RET_USAGE instead of calling cmd_usage() directly. I'm not completely sure about this patch since the code since impact is small (100 byte or so on ARM) and it might need splitting into smaller patches. But for now here it is. Signed-off-by: Simon Glass <sjg@chromium.org>
* Blackfin: otp: fix build after constification of args[]Mike Frysinger2010-10-021-6/+7
| | | | | | | | The OTP code does a little shuffling of arguments that aren't really necessary, so use a local variable instead to fix build errors now that the args[] parameter is const. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* various cmd_* files: fixed layout a little bitFrans Meulenbroeks2010-08-091-1/+2
| | | | | | | | | | Most of the files have U_BOOT_CMD on a separate line, but a few didn't and had the first line on the same line as U_BOOT_CMD. This changes these files by adding a line break and a tab Signed-off-by: Frans Meulenbroeks <fransmeulenbroeks@gmail.com>
* cmd_usage(): simplify return code handlingWolfgang Denk2010-07-241-2/+1
| | | | | | | | | | | | | | | | 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 Denk2010-07-041-1/+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 Denk2009-06-121-1/+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>
* Blackfin: drop newline from OTP helpMike Frysinger2009-04-021-1/+1
| | | | | | | Looks like I accidentally added a newline to the OTP help when merging and older change. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: fixup misc warnings such as printf's and missing castsMike Frysinger2009-01-281-3/+3
| | | | Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: implement real write support for OTPMike Frysinger2009-01-281-42/+115
| | | | | | | | Now that real documentation has been released for the OTP interface and the on-chip ROM wrt writing/timings, implement support for reading/writing as well as dumping/locking. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Command usage cleanupPeter Tyser2009-01-281-1/+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 Tyser2009-01-281-1/+1
| | | | Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
* interface to Blackfin on-chip One-Time-Programmable memoryMike Frysinger2008-02-041-0/+163
Signed-off-by: Mike Frysinger <vapier@gentoo.org>