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The run command treats each argument an an environment variable. It gets the
value of each variable and executes it as a command. If an environment
variable contains a newline and the hush cli is used, it is supposed to
execute each line one after the other.
Normally a newline signals to hush to exit - this is used in normal command
line entry - after a command is entered we want to return to allow the user
to enter the next one. But environment variables obviously need to execute
to completion.
Add a special case for the execution of environment variables which
continues when a newline is seen, and add a few tests to check this
behaviour.
Note: it's not impossible that this may cause regressions in other areas.
I can't think of a case but with any change of behaviour with limited test
coverage there is always a risk. From what I can tell this behaviour has
been around since at least U-Boot 2011.03, although this pre-dates sandbox
and I have not tested it on real hardware.
Reported-by: Wolfgang Denk <wd@denx.de>
Signed-off-by: Simon Glass <sjg@chromium.org>
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This is not necessary and prevents using this header when building tools.
Signed-off-by: Simon Glass <sjg@chromium.org>
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U-Boot now uses errors defined in include/errno.h which are negative
integers. Commands which fail need to report the error and return 1
to indicate failure. Add this functionality in cmd_process_error().
For now this merely reports the error number. It would be possible
also to produce a helpful error message by storing the error strings
in U-Boot.
Signed-off-by: Simon Glass <sjg@chromium.org>
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Signed-off-by: Wolfgang Denk <wd@denx.de>
[trini: Fixup common/cmd_io.c]
Signed-off-by: Tom Rini <trini@ti.com>
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Make do_bootz available for other functions like do_bootm is.
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
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Refactor linker-generated array code so that symbols
which were previously linker-generated are now compiler-
generated. This causes relocation records of type
R_ARM_ABS32 to become R_ARM_RELATIVE, which makes
code which uses LGA able to run before relocation as
well as after.
Note: this affects more than ARM targets, as linker-
lists span possibly all target architectures, notably
PowerPC.
Conflicts:
arch/arm/cpu/arm926ejs/mxs/u-boot-spl.lds
arch/arm/cpu/arm926ejs/spear/u-boot-spl.lds
arch/arm/cpu/armv7/omap-common/u-boot-spl.lds
board/ait/cam_enc_4xx/u-boot-spl.lds
board/davinci/da8xxevm/u-boot-spl-da850evm.lds
board/davinci/da8xxevm/u-boot-spl-hawk.lds
board/vpac270/u-boot-spl.lds
Signed-off-by: Albert ARIBAUD <albert.u.boot@aribaud.net>
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As far as every arch has a get_timer function,
run_command_and_time_it code can now disappear.
Signed-off-by: Richard Genoud <richard.genoud@gmail.com>
Acked-By: Che-Liang Chiou <clchiou@chromium.org>
[trini: s/ulong/unsigned long/ in command.h portion]
Signed-off-by: Tom Rini <trini@ti.com>
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Provide u-boot console functions to access IO space registers. A no
thrills implementation, accessing one register at a time.
For example:
boot > iod 80
0080: 00000094
boot > iod.w 80
0080: 0094
boot > iod.b 80
0080: 94
boot > iow.b 0x80 12
boot > iod 0x80
0080: 00000012
Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
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The command declaration now uses the new LG-array method to generate
list of commands. Thus the __u_boot_cmd section is now superseded and
redundant and therefore can be removed. Also, remove externed symbols
associated with this section from include/command.h .
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Joe Hershberger <joe.hershberger@gmail.com>
Cc: Mike Frysinger <vapier@gentoo.org>
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This patch converts the old method of creating a list of command
onto the new LG-arrays code. The old u_boot_cmd section is converted
to new u_boot_list_cmd subsection and LG-array macros used as needed.
Minor adjustments had to be made to the common code to work with the
LG-array macros, mostly the fixup_cmdtable() calls are now passed the
ll_entry_start and ll_entry_count instead of linker-generated symbols.
The command.c had to be adjusted as well so it would use the newly
introduced LG-array API instead of directly using linker-generated
symbols.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Joe Hershberger <joe.hershberger@gmail.com>
Cc: Mike Frysinger <vapier@gentoo.org>
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All the raw block load commands duplicate the same code. Starting with
the ide version as it has progress updates convert ide, usb, and scsi boot
commands to all use a common version.
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
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We currently have the same code in hush.c and main.c. This brings the
code into one place.
As an added feature, if the command function returns CMD_RET_USAGE then
cmd_process() will print a usage message for the command before
returning the standard failure code of 1.
ARM code size increases about 32 bytes with this clean-up.
Signed-off-by: Simon Glass <sjg@chromium.org>
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We should aim for a single point of entry to the commands, whichever
parser is used.
Signed-off-by: Simon Glass <sjg@chromium.org>
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Cleanup the cmd_nvedit.c checkpatch warnings, errors and coding style.
There are 10 wanrings left about the simple_strtoul() function:
WARNING: simple_strtoul is obsolete, use kstrtoul instead
#359: FILE: cmd_nvedit.c:359:
+ load_addr = simple_strtoul(argv[2], NULL, 16);
...
total: 0 errors, 10 warnings, 1043 lines checked
Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
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By default sections are 16-byte aligned on some architectures, but the
command name structure (struct cmd_tbl_s) does not have padding to
16 bytes. This reduces the alignment to 4-bytes so that the command
table can be accessed correctly on any architecture.
(Note: this needs doing properly)
Signed-off-by: Simon Glass <sjg@chromium.org>
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The usage helper doesn't modify the command, so constify its input arg.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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Rather than having a bunch of random commands handle autostart behavior,
unify the logic in a single place. This also fixes building of these
different commands when bootm is disabled.
Acked-by: Matthew McClintock <msm@freescale.com>
Acked-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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Rather than add runtime overhead of installing completion handlers, do it
statically at build time. This requires a new build time helper macro to
declare a command and the completion handler at the same time. Then we
convert the env related funcs over to this.
This gives an opportunity to also unify the U_BOOT_CMD macros.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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The duplication of the do_reset prototype has gotten out of hand,
and they're not all in sync. Unify them all in command.h.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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The duplication of the do_bootm prototype has gotten out of hand,
and they're pretty much all outdated (wrt constness). Unify them
all in command.h.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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The recent command clean up to constify the argv option to command funcs
missed the command_t type itself. This is probably because there are no
build time warnings from it because no one is actually using this thing.
So just punt it rather than fix it.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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By now, the majority of architectures have working relocation
support, so the few remaining architectures have become exceptions.
To make this more obvious, we make working relocation now the default
case, and flag the remaining cases with CONFIG_NEEDS_MANUAL_RELOC.
Signed-off-by: Wolfgang Denk <wd@denx.de>
Tested-by: Heiko Schocher <hs@denx.de>
Tested-by: Reinhard Meyer <u-boot@emk-elektronik.de>
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fixup_cmdtable() did all work for fixing up the cmdtable,
if CONFIG_RELOC_FIXUP_WORKS is not defined.
CONFIG_RELOC_FIXUP_WORKS is missing for i386! I talked
with Graeme Russ, and he will fix this soon.
Portions of this work were supported by funding from
the CE Linux Forum.
Signed-off-by: Heiko Schocher <hs@denx.de>
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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>
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In case of incorrect command invocations U-Boot used to print pretty
useless "usage" messages, for example:
=> nand markbad
Usage:
nand - NAND sub-system
In the result, the user would have to run the "help" command to get
the (available) information about correct command usage. Change this,
so that this information gets always printed.
Note that this changes the user interface of all commands, but
hopefully to the better.
Signed-off-by: Wolfgang Denk <wd@denx.de>
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Other commands implementing subcommands can reuse this code nicely.
Signed-off-by: Detlev Zundel <dzu@denx.de>
Signed-off-by: Andreas Pfefferle <ap@denx.de>
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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>
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Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
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Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
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Sub-command can benefit from using the same table and search functions
that top level commands have. Expose this functionality by refactoring
find_cmd() and introducing find_cmd_tbl() that sub-command processing
can call.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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add CMD_DATA_SIZE macro to enable it
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
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Signed-off-by: Stefan Roese <sr@denx.de>
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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>
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Signed-off-by: Jon Loeliger <jdl@freescale.com>
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- add auto-complete support to the U-Boot CLI
- add support for NETTA and NETPHONE boards; fix NETVIA board
* Patch by Yuli Barcohen, 28 Mar 2004:
- Add support for MPC8272 family including MPC8247/8248/8271/8272
- Add support for MPC8272ADS evaluation board (another flavour of MPC8260ADS)
- Change configuration method for MPC8260ADS family
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get rid of MK_CMD_ENTRY macro; update doc/README.command
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- 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)
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