dtc: Add support for binary includes.

On Wed, Jun 04, 2008 at 09:26:23AM -0500, Jon Loeliger wrote:
> David Gibson wrote:
>
>> But as I said that can be dealt with in the future without breaking
>> compatibility.  Objection withdrawn.
>>
>
> And on that note, I officially implore Scott to
> re-submit his binary include patch!

Scott's original patch does still have some implementation details I
didn't like.  So in the interests of saving time, I've addressed some
of those, added a testcase, and and now resubmitting my revised
version of Scott's patch.

dtc: Add support for binary includes.

A property's data can be populated with a file's contents
as follows:

node {
	prop = /incbin/("path/to/data");
};

A subset of a file can be included by passing start and size parameters.
For example, to include bytes 8 through 23:

node {
	prop = /incbin/("path/to/data", 8, 16);
};

As with /include/, non-absolute paths are looked for in the directory
of the source file that includes them.

Implementation revised, and a testcase added by David Gibson

Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Acked-by: Scott Wood <scottwood@freescale.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/dtc-lexer.l b/dtc-lexer.l
index 04b1753..8f15c4d 100644
--- a/dtc-lexer.l
+++ b/dtc-lexer.l
@@ -190,6 +190,13 @@ static int pop_input_file(void);
 			return DT_PROPNODENAME;
 		}
 
+"/incbin/"	{
+			yylloc.file = srcpos_file;
+			yylloc.first_line = yylineno;
+			DPRINT("Binary Include\n");
+			return DT_INCBIN;
+		}
+
 <*>[[:space:]]+	/* eat whitespace */
 
 <*>"/*"([^*]|\*+[^*/])*\*+"/"	{