Re: [PATCH v3] commands: of_dump switch to get fixed devictree

[Sascha Hauer <s.hauer@pengutronix.de>]

On Thu, Aug 21, 2014 at 01:26:19PM +0200, Jan Weitzel wrote:
> Add a switch to get the devicetree processed by the registered fixups.
> This is also whats the kernel gets.
> 
> Signed-off-by: Jan Weitzel <j.weitzel@phytec.de>
> ---
> v3: create a copy of the internal devicetree before use of_fix_tree
> 
>  commands/of_dump.c |   31 +++++++++++++++++++++++++++++--
>  1 files changed, 29 insertions(+), 2 deletions(-)
> 
> diff --git a/commands/of_dump.c b/commands/of_dump.c
> index cafde07..f82f0fd 100644
> --- a/commands/of_dump.c
> +++ b/commands/of_dump.c
> @@ -34,16 +34,20 @@ static int do_of_dump(int argc, char *argv[])
>  {
>  	int opt;
>  	int ret;
> +	int fix = 0;
>  	struct device_node *root = NULL, *node, *of_free = NULL;
>  	char *dtbfile = NULL;
>  	size_t size;
>  	const char *nodename;
>  
> -	while ((opt = getopt(argc, argv, "f:")) > 0) {
> +	while ((opt = getopt(argc, argv, "Ff:")) > 0) {
>  		switch (opt) {
>  		case 'f':
>  			dtbfile = optarg;
>  			break;
> +		case 'F':
> +			fix = 1;
> +			break;
>  		default:
>  			return COMMAND_ERROR_USAGE;
>  		}
> @@ -75,6 +79,28 @@ static int do_of_dump(int argc, char *argv[])
>  		of_free = root;
>  	} else {
>  		root = of_get_root_node();
> +
> +		if (fix) {
> +			/* create a copy of internal devicetree */
> +			void *fdt;
> +			fdt = of_flatten_dtb(root);
> +			root = of_unflatten_dtb(fdt);

That's really a creative way to make a copy of the device tree ;)

Ok, I'll close both eyes while applying it.

Sascha

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