Commit graph

25 commits

Author SHA1 Message Date
Wolfgang Denk
54841ab50c Make sure that argv[] argument pointers are not modified.
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>
2010-07-04 23:55:42 +02:00
Niklaus Giger
3c972849f2 Less verbose output when loading vxworks 6.x images
Loading vxWorks 5.x images resulted just into 3 or 4 lines of output.
With vxWorks 6.x and the new GCC it emits about 30 lines, which is
far too noisy in my opinion.

Signed-off-by: Niklaus Giger <niklaus.giger@member.fsf.org>
2009-07-27 00:15:53 +02:00
Wolfgang Denk
a89c33db96 General help message cleanup
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>
2009-06-12 20:47:16 +02:00
Heiko Schocher
76756e41cd ppc: cleanup compiler errors/warnings
Current u-boot top of tree builds with warnings/errors for
the following boards:

ads5121 cpci5200 mecp5200 v38b IAD210 MBX MBX860T NX823
RPXClassic debris PN62

following patch solves this.

Signed-off-by: Heiko Schocher <hs@denx.de>
Acked-by: Mike Frysinger <vapier@gentoo.org>
2009-03-27 20:23:32 +01:00
Mike Frysinger
62c93d92f1 bootvx: get mac address from environment
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
CC: Niklaus Giger <niklaus.giger@member.fsf.org>
CC: Ben Warren <biggerbadderben@gmail.com>
2009-03-20 22:39:10 +01:00
Peter Tyser
2fb2604d5c Command usage cleanup
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>
2009-01-28 08:49:52 +01:00
Niklaus Giger
29a4c24de9 cmd_elf.c: Cleanup bootvx and handle new CONFIG_SYS_VXWORKS parameters
- fix size too small by one in sprintf
- changed old (pre 2004) device name ibmEmac to emac
- boot device may be overriden in board config
- servername may be defined in board config
- additional parameters may be defined in board config
- fixed some line wrappings
- replaced  redundant MAX define by max

Signed-off-by: Niklaus Giger <niklaus.giger@member.fsf.org>
2008-12-07 00:18:53 +01:00
Andy Fleming
20d04774f4 Consolidate MAX/MIN definitions
There were several, now there is one (two if you count the lower-case
versions).

Signed-off-by: Andy Fleming <afleming@freescale.com>
2008-11-02 16:23:46 +01:00
Jean-Christophe PLAGNIOL-VILLARD
6d0f6bcf33 rename CFG_ macros to CONFIG_SYS
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2008-10-18 21:54:03 +02:00
Mike Frysinger
017e9b7925 allow ports to override bootelf behavior
Change the bootelf setup function into a dedicated weak function called
do_bootelf_exec.  This way ports can control the behavior however they
like before/after calling the ELF entry point.
2008-04-18 00:30:42 -07:00
Mike Frysinger
1f1d88dd40 disable caches before booting an app for Blackfin apps
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>
2008-04-13 13:53:45 -07:00
Grant Likely
4a43719a77 [BUILD] conditionally compile common/cmd_*.c in common/Makefile
Modify common/Makefile to conditionally compile the cmd_*.c files based
on the board config.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2007-11-20 22:33:54 -07:00
Jon Loeliger
9025317883 common/: Remove lingering references to CFG_CMD_* symbols.
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>
2007-07-10 11:02:44 -05:00
Jon Loeliger
baa26db411 common/cmd_[af]*: Remove obsolete references to CONFIG_COMMANDS.
Signed-off-by: Jon Loeliger <jdl@freescale.com>
2007-07-08 17:55:57 -05:00
Jon Loeliger
a76adc8142 common/cmd_[a-f]* : Augment CONFIG_COMMANDS tests with defined(CONFIG_CMD_*).
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>
2007-07-04 00:23:08 +02:00
Stefan Roese
1bdd46832a [PATCH] common/cmd_elf.c: Enable loadaddr as parameter in bootvx command
In the bootvx command the load address was only read from the env
variable "loadaddr" and not optionally passed as paramter as described
in the help. This is fixed with this patch. The behaviour is now the
same as in the bootelf command.

Signed-off-by: Stefan Roese <sr@denx.de>
2006-11-29 16:13:43 +01:00
Wolfgang Denk
d87080b721 GCC-4.x fixes: clean up global data pointer initialization for all boards. 2006-03-31 18:32:53 +02:00
Stefan Roese
c157d8e219 Add support for AMCC PPC440EP/GR eval boards Yosemite and Yellowstone.
Patch by Steven Blakeslee, 27 Jul 2005
2005-08-01 16:41:48 +02:00
stroese
1cdf5d92cf code cleanup: use CFG_VXWORKS_MAC_PTR instead of multiple board defines 2004-12-16 17:37:54 +00:00
wdenk
4b9206ed51 * Patches by Thomas Viehweger, 16 Mar 2004:
- show PCI clock frequency on MPC8260 systems
  - add FCC_PSMR_RMII flag for HiP7 processors
  - in do_jffs2_fsload(), take load address from load_addr if not set
    explicit, update load_addr otherwise
  - replaced printf by putc/puts when no formatting is needed
    (smaller code size, faster execution)
2004-03-23 22:14:11 +00:00
wdenk
0d4983930a Patch by Kenneth Johansson, 30 Jun 2003:
get rid of MK_CMD_ENTRY macro; update doc/README.command
2003-07-01 21:06:45 +00:00
wdenk
8bde7f776c * Code cleanup:
- 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)
2003-06-27 21:31:46 +00:00
wdenk
6069ff2653 * Add support for 16 MB flash configuration of TRAB board
* Patch by Erwin Rol, 27 Feb 2003:
  Add support for RTEMS

* Add image information to README

* Fix dual PCMCIA slot support (when running with just one
  slot populated)

* Add VFD type detection to trab board

* extend drivers/cs8900.c driver to synchronize  ethaddr  environment
  variable with value in the EEPROM

* Start adding MIPS support files
2003-02-28 00:49:47 +00:00
wdenk
eb9401e3eb * Patch by Andreas Oberritter, 09 Nov 2002:
Change behaviour of NetLoop(): return -1 for errors, filesize
  otherwise; return code 0 is valid an means no file loaded - in this
  case the environment still gets updated!

* Patches by Jon Diekema, 9 Nov 2002:
  - improve ADC/DAC clocking on the SACSng board to align
    the failing edges of LRCLK and SCLK
  - sbc8260 configuration tweaks
  - add status LED support for 82xx systems
  - wire sspi/sspo commands into command handler; improved error
    handlering
  - add timestamp support and alternate memory test to the
    SACSng configuration
2002-11-11 02:11:37 +00:00
wdenk
458ded34b6 Initial revision 2002-09-20 10:59:08 +00:00