linux-kernel - Re: [PATCH 3/6] nova-core: docs: Document vbios layout

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Message-ID: <e98eca0d-f195-41de-89d9-d169c28d1a6a@nvidia.com>
Date: Wed, 23 Apr 2025 19:30:38 -0400
From: Joel Fernandes <joelagnelf@...dia.com>
To: Timur Tabi <ttabi@...dia.com>, "corbet@....net" <corbet@....net>,
 "tzimmermann@...e.de" <tzimmermann@...e.de>,
 "simona@...ll.ch" <simona@...ll.ch>, "airlied@...il.com"
 <airlied@...il.com>,
 "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
 "dakr@...nel.org" <dakr@...nel.org>,
 "maarten.lankhorst@...ux.intel.com" <maarten.lankhorst@...ux.intel.com>,
 "mripard@...nel.org" <mripard@...nel.org>
Cc: Shirish Baskaran <sbaskaran@...dia.com>,
 Alistair Popple <apopple@...dia.com>, John Hubbard <jhubbard@...dia.com>,
 "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
 "nouveau@...ts.freedesktop.org" <nouveau@...ts.freedesktop.org>,
 "linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
 Ben Skeggs <bskeggs@...dia.com>, Alexandre Courbot <acourbot@...dia.com>
Subject: Re: [PATCH 3/6] nova-core: docs: Document vbios layout



On 4/23/2025 7:12 PM, Timur Tabi wrote:
> On Wed, 2025-04-23 at 18:53 -0400, Joel Fernandes wrote:
>> +This document describes the layout of the VBIOS image which is a series of concatenated
>> +images in the ROM of the GPU. The VBIOS is mirrored onto the BAR 0 space and is read
>> +by both Boot ROM firmware (also known as IFR or init-from-rom firmware) on the GPU to
>> +boot strap various microcontrollers (PMU, SEC, GSP) with critical initialization before
>> +the driver loads, as well as by the nova-core driver in the kernel to boot the GSP.
> 
> You might want to add a link to this page:
> 
> https://download.nvidia.com/open-gpu-doc/BIOS-Information-Table/1/BIOS-Information-Table.html

Good idea, will do!

 - Joel