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>
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>
There is more and more usage of printing 64bit values,
so enable this feature generally, and delete the
CONFIG_SYS_64BIT_VSPRINTF and CONFIG_SYS_64BIT_STRTOUL
defines.
Signed-off-by: Heiko Schocher <hs@denx.de>
Commit 4abd844d8e extended the fdt command parser to handle property
strings which are split across multiple arguments but it was broken for
byte streams and strings.
Byte stream parsing:
* Fixes where it would terminate early or go into an endless loop.
* Fixes a 0x00 being inserted into the data if there is a space after
'[' or a separate argument.
* Fixes dereferencing the argument pointer after the last argument.
* Checks for bad characters.
String parsing:
* Treat multiple arguments as a string list. This fixes an issue where
only the last argument was stored.
Signed-off-by: Ken MacLeod <ken@bitsko.slc.ut.us>
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>
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>
Commit 2a1a2cb6 didnt remove the dummy mem reservation in fdt_chosen,
and this stopped Linux from booting with a Ramdisk. This patch fixes
this, by deleting the useless dummy mem reservation.
When booting with a Ramdisk, a fix offset FDT_RAMDISK_OVERHEAD is now
added to of_size, so we dont need anymore a dummy mem reservation.
I measured the value of FDT_RAMDISK_OVERHEAD on a MPC8270 based
system (=0x44 bytes) and rounded it up to 0x80).
Signed-off-by: Heiko Schocher <hs@denx.de>
Acked-by: Kumar Gala <galak@kernel.crashing.org>
Set the fdt working address so "fdt FOO" commands can be used as part
of the bootm flow. Also set an the environment variable "fdtaddr"
with the value.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
The compiler will help find mismatches between printf formats and
arguments if you let it. This patch adds the necessary attributes to
declarations in include/common.h, then begins to correct the resulting
compiler warnings. Some of these were bugs, e.g., "$d" instead of
"%d" and incorrect arguments. Others were just annoying, like
int-long mismatches on a system where both are 32 bits. It's worth
fixing the annoying errors to catch the real ones.
Signed-off-by: Andrew Klossner <andrew@cesa.opbu.xerox.com>
The working_fdt pointer was declared in common/fdt_support.c but was
not used there. Move it to common/cmd_fdt.c where it is used (it is
also used in lib_ppc/bootm.c).
Signed-off-by: Gerald Van Baren <vanbaren@cideas.com>
differentiate with local variables of the same name by renaming the
global 'fdt' variable 'working_fdt'.
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
It was checking just for "b", which is not unique with respect to the
"boot" command. Change to check for "boa"[rdsetup].
Signed-off-by: Gerald Van Baren <vanbaren@cideas.com>
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>
The fdt set command was treating properties specified as <00> and <0011>
as byte streams, rather than as an array of cells. As we already have
syntax for expressing the desire for a stream of bytes ([ xx xx ...]),
we should use the <> syntax to describe arrays of cells, which are always
32-bits per element. If we imagine this likely (IMHO) scenario:
> fdt set /ethernet-phy@1 reg <1>
With the old code, this would create a bad fdt, since the reg cell would be
made to be one byte in length. But the cell must be 4 bytes, so this would
break mysteriously.
Also, the dts spec calls for constants inside the angle brackets (<>)
to conform to C constant standards as they pertain to base.
Take this scenario:
> fdt set /ethernet@f00 reg <0xe250000\ 0x1000>
The old fdt command would complain that it couldn't parse that. Or, if you
wanted to specify that a certain clock ran at 33 MHz, you'd be required to
do this:
> fdt set /mydev clock <1f78a40>
Whereas the new code will accept decimal numbers.
While I was in there, I extended the fdt command parser to handle property
strings which are split across multiple arguments:
> fdt set /ethernet@f00 interrupts < 33 2 34 2 36 2 >
> fdt p /ethernet@f00
ethernet@f00 {
interrupts = <0x21 0x2 0x22 0x2 0x24 0x2>;
};
Lastly, the fdt print code was rearranged slightly to print arrays of cells
if the length of the property is a multiple of 4 bytes, and to not print
leading zeros.
Signed-off-by: Andy Fleming <afleming@freescale.com>
These defines embedded the u-boot env variables and/or the bd_t structure
in the fdt blob. The conclusion of discussion on the u-boot email list
was that embedding these in the fdt blob is not useful: there are better
ways of passing the data (in fact, the fdt blob itself replaces the
bd_t struct).
The only board that enables these is the stxxtc and they don't appear
to be used by linux.
Signed-off-by: Gerald Van Baren <vanbaren@cideas.com>
Acked-by: Kim Phillips <kim.phillips@freescale.com>
Add a note that "fdt copy" makes the new address active.
Remove most of the extra hints at the end of the fdt help.
Signed-off-by: Gerald Van Baren <vanbaren@cideas.com>
Fix a bug found and documented by Bartlomiej Sieka where the optional
value on "fdt set <path> <prop> [<val>]" wasn't optional.
=> fdt mknode / testnode
=> fdt print /testnode
testnode {
};
=> fdt set /testnode testprop
=> fdt print /testnode
testnode {
testprop;
};
Signed-off-by: Gerald Van Baren <vanbaren@cideas.com>
cmd_fdt.c: In function fdt_print:
cmd_fdt.c:586: warning: assignment discards qualifiers from pointer target type
cmd_fdt.c:613: warning: assignment discards qualifiers from pointer target type
cmd_fdt.c:635: warning: assignment discards qualifiers from pointer target type
cmd_fdt.c:636: warning: assignment discards qualifiers from pointer target type
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Update libfdt to commit 8eaf5e358366017aa2e846c5038d1aa19958314e from
the device tree compiler (dtc) project.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
In the patch titled "Create new fdt boardsetup command..." I removed the
call to ft_board_setup() from the routine fdt_chosen(), but I forgot
to add a direct call back into cmd_bootm.c
This fixes the oversight by adding the direct call to the bootm command.
Signed-off-by: Gerald Van Baren <vanbaren@cideas.com>
Previously ft_board_setup() was called by fdt_chosen() which was not
really correctly structured. This splits ft_board_setup() out by creating
a new fdt boardsetup command.
Fix a bug when parsing fdt set command values which have the square
bracket form [00 11 22 33] - the length was updated incorrectly in when
parsing that form.
Signed-off-by: Gerald Van Baren <vanbaren@cideas.com>
The new name matches more closely the kernel's name, which is also
a much better description.
Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>
Acked-by: Gerald Van Baren <vanbaren@cideas.com>
Break lines that were greater than 80 characters in length.
Move the fdt print and property parsing code to separate static functions
to reduce coding clutter in the fdt_cmd handling body.
Signed-off-by: Gerald Van Baren <vanbaren@cideas.com>
Make the length parameter optional: if not specified, do the move using
the current size unchanged.
Signed-off-by: Gerald Van Baren <vanbaren@cideas.com>
The fdt command uses David Gibson's libfdt library to manipulate as well
as print the flattened device tree. This patch is the new command,
the second part is the modifications to the existing code.
Wolfgang Denk