4 files changed, 46 insertions, 4 deletions

diff --git a/drivers/gpu/nova-core/fsp/hal.rs b/drivers/gpu/nova-core/fsp/hal.rs
index fc5ebb749c59..8aebe1800a64 100644
--- a/drivers/gpu/nova-core/fsp/hal.rs
+++ b/drivers/gpu/nova-core/fsp/hal.rs
@@ -9,19 +9,25 @@ use crate::{
     },
 };
 
+mod gb100;
 mod gb202;
 mod gh100;
 
 pub(super) trait FspHal {
     /// Returns the secure boot status from the architecture-specific `NV_THERM_I2CS_SCRATCH` register.
     fn fsp_boot_status(&self, bar: &Bar0) -> u32;
+
+    /// Returns the FSP Chain of Trust protocol version this chipset advertises.
+    #[expect(dead_code)]
+    fn cot_version(&self) -> u16;
 }
 
 /// Returns the FSP HAL, or `None` if the architecture doesn't support FSP.
 pub(super) fn fsp_hal(chipset: Chipset) -> Option<&'static dyn FspHal> {
     match chipset.arch() {
         Architecture::Turing | Architecture::Ampere | Architecture::Ada => None,
-        Architecture::Hopper | Architecture::BlackwellGB10x => Some(gh100::GH100_HAL),
+        Architecture::Hopper => Some(gh100::GH100_HAL),
+        Architecture::BlackwellGB10x => Some(gb100::GB100_HAL),
         Architecture::BlackwellGB20x => Some(gb202::GB202_HAL),
     }
 }
diff --git a/drivers/gpu/nova-core/fsp/hal/gb100.rs b/drivers/gpu/nova-core/fsp/hal/gb100.rs
new file mode 100644
index 000000000000..d50aaba0a84f
--- /dev/null
+++ b/drivers/gpu/nova-core/fsp/hal/gb100.rs
@@ -0,0 +1,23 @@
+// SPDX-License-Identifier: GPL-2.0
+// SPDX-FileCopyrightText: Copyright (c) 2026 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+
+use crate::{
+    driver::Bar0,
+    fsp::hal::FspHal, //
+};
+
+struct Gb100;
+
+impl FspHal for Gb100 {
+    fn fsp_boot_status(&self, bar: &Bar0) -> u32 {
+        // GB10x shares Hopper's FSP secure boot status register.
+        super::gh100::fsp_boot_status_gh100(bar)
+    }
+
+    fn cot_version(&self) -> u16 {
+        2
+    }
+}
+
+const GB100: Gb100 = Gb100;
+pub(super) const GB100_HAL: &dyn FspHal = &GB100;
diff --git a/drivers/gpu/nova-core/fsp/hal/gb202.rs b/drivers/gpu/nova-core/fsp/hal/gb202.rs
index 2f08b6c9f308..2bca76c8fd64 100644
--- a/drivers/gpu/nova-core/fsp/hal/gb202.rs
+++ b/drivers/gpu/nova-core/fsp/hal/gb202.rs
@@ -17,6 +17,10 @@ impl FspHal for Gb202 {
             .fsp_boot_complete()
             .into()
     }
+
+    fn cot_version(&self) -> u16 {
+        2
+    }
 }
 
 const GB202: Gb202 = Gb202;
diff --git a/drivers/gpu/nova-core/fsp/hal/gh100.rs b/drivers/gpu/nova-core/fsp/hal/gh100.rs
index 290fb55a81da..c38a7e96eb60 100644
--- a/drivers/gpu/nova-core/fsp/hal/gh100.rs
+++ b/drivers/gpu/nova-core/fsp/hal/gh100.rs
@@ -11,11 +11,20 @@ use crate::{
 
 struct Gh100;
 
+/// Reads the FSP secure boot status from the Hopper/GB10x thermal scratch register.
+pub(super) fn fsp_boot_status_gh100(bar: &Bar0) -> u32 {
+    bar.read(regs::gh100::NV_THERM_I2CS_SCRATCH_FSP_BOOT_COMPLETE)
+        .fsp_boot_complete()
+        .into()
+}
+
 impl FspHal for Gh100 {
     fn fsp_boot_status(&self, bar: &Bar0) -> u32 {
-        bar.read(regs::gh100::NV_THERM_I2CS_SCRATCH_FSP_BOOT_COMPLETE)
-            .fsp_boot_complete()
-            .into()
+        fsp_boot_status_gh100(bar)
+    }
+
+    fn cot_version(&self) -> u16 {
+        1
     }
 }