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From: Mauro Carvalho Chehab <>
To: Rob Herring <>
	Thomas Bogendoerfer <>,
	Yoshinori Sato <>,
	Geert Uytterhoeven <>,
	Jonathan Corbet <>,,,,,,,
	Rich Felker <>, Paul Mackerras <>,
	"H. Peter Anvin" <>, Borislav Petkov <>,
	Thomas Gleixner <>,
	Frank Rowand <>,
	Ingo Molnar <>
Subject: Re: [PATCH 2/2] dt: Remove booting-without-of.rst
Date: Wed, 21 Oct 2020 08:45:18 +0200
Message-ID: <20201021084518.1eab6481@coco.lan> (raw)
In-Reply-To: <>

Hi Rob,

Em Thu,  8 Oct 2020 09:24:20 -0500
Rob Herring <> escreveu:

> booting-without-of.rstt is an ancient document that first outlined
> Flattened DeviceTree on PowerPC initially. The DT world has evolved a
> lot in the 15 years since and booting-without-of.rst is pretty stale.
> The name of the document itself is confusing if you don't understand the
> evolution from real 'OpenFirmware'. Most of what booting-without-of.rst
> contains is now in the DT specification (which evolved out of the
> ePAPR). The few things that weren't documented in the DT specification
> are now.
> All that remains is the boot entry details, so let's move these to arch
> specific documents. The exception is arm which already has the same
> details documented.

Removing this document caused a warning at Documentation/arm/booting.rst:

	$ ./scripts/documentation-file-ref-check 
	Documentation/arm/booting.rst: Documentation/devicetree/booting-without-of.rst

as it mentions that the DTB format is described on booting-without-of.rst:

	4b. Setup the device tree

	The boot loader must load a device tree image (dtb) into system ram
	at a 64bit aligned address and initialize it with the boot data.  The
	dtb format is documented in Documentation/devicetree/booting-without-of.rst.
	The kernel will look for the dtb magic value of 0xd00dfeed at the dtb
	physical address to determine if a dtb has been passed instead of a
	tagged list.

So, I guess that such part of the document needs to be moved to booting.rst.


  parent reply index

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-08 14:24 [PATCH 1/2] dt-bindings: powerpc: Add a schema for the 'sleep' property Rob Herring
2020-10-08 14:24 ` [PATCH 2/2] dt: Remove booting-without-of.rst Rob Herring
2020-10-08 15:03   ` Borislav Petkov
2020-10-09  3:51   ` Michael Ellerman
2020-10-21  6:45   ` Mauro Carvalho Chehab [this message]
2021-01-17 16:10 ` [PATCH 1/2] dt-bindings: powerpc: Add a schema for the 'sleep' property Johan Jonker
2021-01-20  1:44   ` Rob Herring

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