linux-kernel - [PATCH 26/31] gpu: nova-core: refactor SEC2 booter loading into run

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20251203055923.1247681-27-jhubbard@nvidia.com>
Date: Tue,  2 Dec 2025 21:59:18 -0800
From: John Hubbard <jhubbard@...dia.com>
To: Danilo Krummrich <dakr@...nel.org>
Cc: Alexandre Courbot <acourbot@...dia.com>,
	Joel Fernandes <joelagnelf@...dia.com>,
	Timur Tabi <ttabi@...dia.com>,
	Alistair Popple <apopple@...dia.com>,
	Edwin Peer <epeer@...dia.com>,
	Zhi Wang <zhiw@...dia.com>,
	David Airlie <airlied@...il.com>,
	Simona Vetter <simona@...ll.ch>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	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 <lossin@...nel.org>,
	Andreas Hindborg <a.hindborg@...nel.org>,
	Alice Ryhl <aliceryhl@...gle.com>,
	Trevor Gross <tmgross@...ch.edu>,
	nouveau@...ts.freedesktop.org,
	rust-for-linux@...r.kernel.org,
	LKML <linux-kernel@...r.kernel.org>,
	John Hubbard <jhubbard@...dia.com>
Subject: [PATCH 26/31] gpu: nova-core: refactor SEC2 booter loading into run_booter() helper

Extract the SEC2 booter loading sequence into a dedicated helper
function. This is a pure refactoring with no behavior change, done
in preparation for adding an alternative FSP boot path.

Co-developed-by: Alexandre Courbot <acourbot@...dia.com>
Signed-off-by: Alexandre Courbot <acourbot@...dia.com>
Signed-off-by: John Hubbard <jhubbard@...dia.com>
---
 drivers/gpu/nova-core/gsp/boot.rs | 67 ++++++++++++++++---------------
 1 file changed, 35 insertions(+), 32 deletions(-)

diff --git a/drivers/gpu/nova-core/gsp/boot.rs b/drivers/gpu/nova-core/gsp/boot.rs
index 846064221931..315f84907b11 100644
--- a/drivers/gpu/nova-core/gsp/boot.rs
+++ b/drivers/gpu/nova-core/gsp/boot.rs
@@ -120,6 +120,40 @@ fn run_fwsec_frts(
         }
     }
 
+    fn run_booter(
+        dev: &device::Device<device::Bound>,
+        bar: &Bar0,
+        chipset: Chipset,
+        sec2_falcon: &Falcon<Sec2>,
+        wpr_meta: &CoherentAllocation<GspFwWprMeta>,
+    ) -> Result {
+        let booter_loader = BooterFirmware::new(
+            dev,
+            BooterKind::Loader,
+            chipset,
+            FIRMWARE_VERSION,
+            sec2_falcon,
+            bar,
+        )?;
+
+        sec2_falcon.reset(bar)?;
+        sec2_falcon.dma_load(bar, &booter_loader)?;
+        let wpr_handle = wpr_meta.dma_handle();
+        let (mbox0, mbox1) = sec2_falcon.boot(
+            bar,
+            Some(wpr_handle as u32),
+            Some((wpr_handle >> 32) as u32),
+        )?;
+        dev_dbg!(dev, "SEC2 MBOX0: {:#x}, MBOX1{:#x}\n", mbox0, mbox1);
+
+        if mbox0 != 0 {
+            dev_err!(dev, "Booter-load failed with error {:#x}\n", mbox0);
+            return Err(ENODEV);
+        }
+
+        Ok(())
+    }
+
     /// Attempt to boot the GSP.
     ///
     /// This is a GPU-dependent and complex procedure that involves loading firmware files from
@@ -149,15 +183,6 @@ pub(crate) fn boot(
 
         Self::run_fwsec_frts(dev, gsp_falcon, bar, &bios, &fb_layout)?;
 
-        let booter_loader = BooterFirmware::new(
-            dev,
-            BooterKind::Loader,
-            chipset,
-            FIRMWARE_VERSION,
-            sec2_falcon,
-            bar,
-        )?;
-
         let wpr_meta =
             CoherentAllocation::<GspFwWprMeta>::alloc_coherent(dev, 1, GFP_KERNEL | __GFP_ZERO)?;
         dma_write!(wpr_meta[0] = GspFwWprMeta::new(&gsp_fw, &fb_layout))?;
@@ -185,29 +210,7 @@ pub(crate) fn boot(
             "Using SEC2 to load and run the booter_load firmware...\n"
         );
 
-        sec2_falcon.reset(bar)?;
-        sec2_falcon.dma_load(bar, &booter_loader)?;
-        let wpr_handle = wpr_meta.dma_handle();
-        let (mbox0, mbox1) = sec2_falcon.boot(
-            bar,
-            Some(wpr_handle as u32),
-            Some((wpr_handle >> 32) as u32),
-        )?;
-        dev_dbg!(
-            pdev.as_ref(),
-            "SEC2 MBOX0: {:#x}, MBOX1{:#x}\n",
-            mbox0,
-            mbox1
-        );
-
-        if mbox0 != 0 {
-            dev_err!(
-                pdev.as_ref(),
-                "Booter-load failed with error {:#x}\n",
-                mbox0
-            );
-            return Err(ENODEV);
-        }
+        Self::run_booter(dev, bar, chipset, sec2_falcon, &wpr_meta)?;
 
         gsp_falcon.write_os_version(bar, gsp_fw.bootloader.app_version);
 
-- 
2.52.0