linux-kernel - [PATCH 12/16] gpu: nova-core: firmware: add ucode descriptor used by FWSEC-FRTS

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Message-Id: <20250420-nova-frts-v1-12-ecd1cca23963@nvidia.com>
Date: Sun, 20 Apr 2025 21:19:44 +0900
From: Alexandre Courbot <acourbot@...dia.com>
To: Miguel Ojeda <ojeda@...nel.org>, Alex Gaynor <alex.gaynor@...il.com>, 
 Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>, 
 Björn Roy Baron <bjorn3_gh@...tonmail.com>, 
 Benno Lossin <benno.lossin@...ton.me>, 
 Andreas Hindborg <a.hindborg@...nel.org>, Alice Ryhl <aliceryhl@...gle.com>, 
 Trevor Gross <tmgross@...ch.edu>, Danilo Krummrich <dakr@...nel.org>, 
 David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>, 
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, 
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, 
 Jonathan Corbet <corbet@....net>
Cc: John Hubbard <jhubbard@...dia.com>, Ben Skeggs <bskeggs@...dia.com>, 
 Joel Fernandes <joelagnelf@...dia.com>, Timur Tabi <ttabi@...dia.com>, 
 Alistair Popple <apopple@...dia.com>, linux-kernel@...r.kernel.org, 
 rust-for-linux@...r.kernel.org, nouveau@...ts.freedesktop.org, 
 dri-devel@...ts.freedesktop.org, Alexandre Courbot <acourbot@...dia.com>
Subject: [PATCH 12/16] gpu: nova-core: firmware: add ucode descriptor used
 by FWSEC-FRTS

FWSEC-FRTS is the first firmware we need to run on the GSP falcon in
order to initiate the GSP boot process. Introduce the structure that
describes it.

Signed-off-by: Alexandre Courbot <acourbot@...dia.com>
---
 drivers/gpu/nova-core/firmware.rs | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/drivers/gpu/nova-core/firmware.rs b/drivers/gpu/nova-core/firmware.rs
index 9bad7a86382af7917b3dce7bf3087d0002bd5971..4ef5ba934b9d255635aa9a902e1d3a732d6e5568 100644
--- a/drivers/gpu/nova-core/firmware.rs
+++ b/drivers/gpu/nova-core/firmware.rs
@@ -43,6 +43,34 @@ pub(crate) fn new(
     }
 }
 
+/// Structure used to describe some firmwares, notable fwsec-frts.
+#[allow(dead_code)]
+#[repr(C)]
+#[derive(Debug, Clone)]
+pub(crate) struct FalconUCodeDescV3 {
+    pub(crate) hdr: u32,
+    pub(crate) stored_size: u32,
+    pub(crate) pkc_data_offset: u32,
+    pub(crate) interface_offset: u32,
+    pub(crate) imem_phys_base: u32,
+    pub(crate) imem_load_size: u32,
+    pub(crate) imem_virt_base: u32,
+    pub(crate) dmem_phys_base: u32,
+    pub(crate) dmem_load_size: u32,
+    pub(crate) engine_id_mask: u16,
+    pub(crate) ucode_id: u8,
+    pub(crate) signature_count: u8,
+    pub(crate) signature_versions: u16,
+    _reserved: u16,
+}
+
+#[allow(dead_code)]
+impl FalconUCodeDescV3 {
+    pub(crate) fn size(&self) -> usize {
+        ((self.hdr & 0xffff0000) >> 16) as usize
+    }
+}
+
 pub(crate) struct ModInfoBuilder<const N: usize>(firmware::ModInfoBuilder<N>);
 
 impl<const N: usize> ModInfoBuilder<N> {

-- 
2.49.0