u-boot.git/common/cmd_i2c.c, branch v2011.06

i2c: add i2c deblock sequence before and after every mux config

2011-04-28T08:56:54+00:00

To make sure that the mux can be configured a deblocking sequence
is done before the mux configuration. After the mux switch the new leaf
of, the i2c tree must be again deblocked.

Signed-off-by: Stefan Bigler 
Acked-by: Heiko Schocher 
cc: Wolfgang Denk 
cc: Detlev Zundel 
cc: Prafulla Wadaskar 
cc: Valentin Longchamp 
cc: Holger Brunck 
Signed-off-by: Valentin Longchamp

Replace CONFIG_RELOC_FIXUP_WORKS by CONFIG_NEEDS_MANUAL_RELOC

2010-10-29T19:32:07+00:00

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 
Tested-by: Heiko Schocher 
Tested-by: Reinhard Meyer

ARM: add relocation support

2010-09-19T17:29:53+00:00

!! This breaks support for all arm boards !!

To compile in old style, you must define
CONFIG_SYS_ARM_WITHOUT_RELOC or you can compile
with "CONFIG_SYS_ARM_WITHOUT_RELOC=1 ./MAKEALL board"

!! This define will be removed soon, so convert your
board to use relocation support

Portions of this work were supported by funding from
the CE Linux Forum.

Signed-off-by: Heiko Schocher 

Fix boot from NAND for non-ARM systems
Signed-off-by: Wolfgang Denk

i2c: fix command usage help

2010-09-19T17:29:52+00:00

Portions of this work were supported by funding from
the CE Linux Forum.

Signed-off-by: Heiko Schocher

CMD_I2C: make alen=0 work

2010-08-26T06:33:24+00:00

Signed-off-by: Reinhard Meyer

cmd_usage(): simplify return code handling

2010-07-24T18:43:57+00:00

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

Make sure that argv[] argument pointers are not modified.

2010-07-04T21:55:42+00:00

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 
Acked-by: Mike Frysinger

i2c: made unused function i2c_mux_add_device static

2010-03-29T11:29:12+00:00

and removed it from the .h file

Signed-off-by: Frans Meulenbroeks

cmd_i2c: introduced get_alen helper function

2010-03-29T11:28:57+00:00

The code to parse alen appeared 6 times in the function.
Factored this out in a small helper function

Signed-off-by: Frans Meulenbroeks

cmd_i2c: moved a define to before the functions

2010-03-29T11:28:49+00:00

Signed-off-by: Frans Meulenbroeks