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From: s.hauer@pengutronix.de (Sascha Hauer)
To: linux-arm-kernel@lists.infradead.org
Subject: [patch 6/7] dt: dtb version: dtsi files
Date: Thu, 19 Mar 2015 19:46:03 +0100	[thread overview]
Message-ID: <20150319184603.GA4946@pengutronix.de> (raw)
In-Reply-To: <550A44F9.9060504@gmail.com>

On Wed, Mar 18, 2015 at 08:39:37PM -0700, Frank Rowand wrote:
> From: Frank Rowand <frank.rowand@sonymobile.com>
> 
> Create a .dtsi file to contain the /chosen/dtb-info node and populate the
> properties in that node.
> 
> Signed-off-by: Frank Rowand <frank.rowand@sonymobile.com>
> ---
>  arch/arm/boot/dts/skeleton.dtsi              |    2 
>  include/dt-bindings/version.dtsi             |   19 +++++
> 
> Index: b/include/dt-bindings/version.dtsi
> ===================================================================
> --- /dev/null
> +++ b/include/dt-bindings/version.dtsi
> @@ -0,0 +1,19 @@
> +
> +#include <utsrelease.h>
> +#include <compile.h>
> +#include <compile_dtb.h>
> +
> +/ {
> +	chosen {
> +		dtb-info {
> +			version = UTS_RELEASE, " ", DTB_VERSION;
> +			version-linux =
> +				UTS_RELEASE,
> +				" (", LINUX_COMPILE_BY, "@", LINUX_COMPILE_HOST, ") ",
> +				"(", LINUX_COMPILER, ") ",
> +				UTS_VERSION;
> +			dtb-path = ___DTB_DTB_PATH;
> +			dts-path = ___DTB_DTS_PATH;
> +		};
> +	};
> +};

People are working on reproducible builds to be able to build bit
identical packages for a whole Distribution [1]. While I don't know
how feasible this really is I think we should not actively work on making
that impossible. The people working on reproducible builds state that
timestamps in binaries are bad, because when you can reproduce it it
doesn't matter if it was build yesterday or a decade ago.

Like others already said for security reasons (and also for
reproducibility) I don't want to leak the pathes or machine names I use to
build dtbs into the binaries.

So all this should at least be configurable.

Sascha

[1] https://wiki.debian.org/ReproducibleBuilds

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  reply	other threads:[~2015-03-19 18:46 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-03-19  3:29 [patch 0/7] dt: dtb version: add version info to dtb Frank Rowand
2015-03-19  3:31 ` [patch 1/7] dt: dtb version: consolidate documentation of chosen node bindings Frank Rowand
2015-03-19 13:40   ` Mark Rutland
2015-03-19  3:33 ` [patch 2/7] dt: dtb version: document chosen/dtb-info node binding Frank Rowand
2015-03-19 13:23   ` Rob Herring
2015-03-19 16:42     ` Frank Rowand
2015-03-19 18:41     ` Russell King - ARM Linux
2015-03-19 18:53       ` Mark Rutland
2015-03-19 19:01       ` Frank Rowand
2015-03-19 19:32         ` Russell King - ARM Linux
2015-03-19 20:44           ` Frank Rowand
2015-03-20 14:42             ` Mark Rutland
2015-03-19 13:49   ` Mark Rutland
2015-03-19 17:02     ` Frank Rowand
2015-03-19 17:23       ` Geert Uytterhoeven
2015-03-19 19:12       ` Mark Rutland
2015-03-19 21:27         ` Frank Rowand
2015-03-20 15:25           ` Mark Rutland
2015-03-19 17:37   ` Frank Rowand
2015-03-19  3:34 ` [patch 3/7] dt: dtb version: arm dts Makefile Frank Rowand
2015-03-19  3:36 ` [patch 4/7] dt: dtb version: kernel Makefile Frank Rowand
2015-03-19  3:38 ` [patch 5/7] dt: dtb version: kbuild scripts Frank Rowand
2015-03-19  3:39 ` [patch 6/7] dt: dtb version: dtsi files Frank Rowand
2015-03-19 18:46   ` Sascha Hauer [this message]
2015-03-19  3:41 ` [patch 7/7] dt: dtb version: report dtb info Frank Rowand
2015-03-19  8:12 ` [patch 0/7] dt: dtb version: add version info to dtb Gregory CLEMENT
2015-03-19 17:05   ` Frank Rowand
2015-03-20 13:46 ` Rob Herring
2015-03-20 19:14   ` Uwe Kleine-König

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