Messages in this thread Patch in this message | | | From | "Jason A. Donenfeld" <> | Subject | [PATCH] dt-bindings: chosen: document rng-seed property | Date | Mon, 27 Jun 2022 17:21:07 +0200 |
| |
Document the /chosen/rng-seed property, which has existed for quite some time but without an entry in this file.
Fixes: 428826f5358c ("fdt: add support for rng-seed") Cc: Hsin-Yi Wang <hsinyi@chromium.org> Cc: Kees Cook <keescook@chromium.org> Cc: Rob Herring <robh@kernel.org> Cc: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Reported-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> --- Documentation/devicetree/bindings/chosen.txt | 15 +++++++++++++++ 1 file changed, 15 insertions(+)
diff --git a/Documentation/devicetree/bindings/chosen.txt b/Documentation/devicetree/bindings/chosen.txt index 1cc3aa10dcb1..49b175e133b2 100644 --- a/Documentation/devicetree/bindings/chosen.txt +++ b/Documentation/devicetree/bindings/chosen.txt @@ -7,6 +7,21 @@ arguments. Data in the chosen node does not represent the hardware. The following properties are recognized: +rng-seed +-------- + +This property is used to initialize the kernel's random number generator at +the earliest possible opportunity, and will be credited if CONFIG_RANDOM_ +TRUST_BOOTLOADER is set. All hardware that has an opportunity to set this +with high quality randomness is encouraged to do so. It is parsed as a byte +array, which should be at least 32 bytes long: + +/ { + chosen { + rng-seed = <... random bytes ...>; + }; +}; + kaslr-seed ----------- -- 2.35.1
| |