From: John Hubbard <jhubbard@nvidia.com>
Date: Tue, 2 Jun 2026 03:20:59 +0000 (-0700)
Subject: gpu: nova-core: Hopper/Blackwell: add FMC firmware image
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4257d3179384f8ccb085b64f5ca1373be637b77c;p=thirdparty%2Flinux.git

gpu: nova-core: Hopper/Blackwell: add FMC firmware image

FSP is the Falcon that runs FMC firmware on Hopper and Blackwell.
Load the FMC ELF in two forms: the image section that FSP boots from,
and the full Firmware object for later signature extraction during
Chain of Trust verification. Declare the FMC image in the module's
firmware table so it is bundled for FSP-based chipsets.

Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Reviewed-by: Eliot Courtney <ecourtney@nvidia.com>
Link: https://patch.msgid.link/20260602032111.224790-12-jhubbard@nvidia.com
Co-developed-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
---

diff --git a/drivers/gpu/nova-core/firmware.rs b/drivers/gpu/nova-core/firmware.rs
index 87588cb24f11a..366d3b76360e1 100644
--- a/drivers/gpu/nova-core/firmware.rs
+++ b/drivers/gpu/nova-core/firmware.rs
@@ -28,6 +28,7 @@ use crate::{
 };
 
 pub(crate) mod booter;
+pub(crate) mod fsp;
 pub(crate) mod fwsec;
 pub(crate) mod gsp;
 pub(crate) mod riscv;
@@ -431,10 +432,16 @@ impl<const N: usize> ModInfoBuilder<N> {
             .make_entry_file(name, "bootloader")
             .make_entry_file(name, "gsp");
 
-        if chipset.needs_fwsec_bootloader() {
+        let this = if chipset.needs_fwsec_bootloader() {
             this.make_entry_file(name, "gen_bootloader")
         } else {
             this
+        };
+
+        if chipset.uses_fsp() {
+            this.make_entry_file(name, "fmc")
+        } else {
+            this
         }
     }
 
diff --git a/drivers/gpu/nova-core/firmware/fsp.rs b/drivers/gpu/nova-core/firmware/fsp.rs
new file mode 100644
index 0000000000000..011be1e571c25
--- /dev/null
+++ b/drivers/gpu/nova-core/firmware/fsp.rs
@@ -0,0 +1,47 @@
+// SPDX-License-Identifier: GPL-2.0
+// SPDX-FileCopyrightText: Copyright (c) 2026 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+
+//! FSP is a hardware unit that runs FMC firmware.
+
+use kernel::{
+    device,
+    dma::Coherent,
+    firmware::Firmware,
+    prelude::*, //
+};
+
+use crate::{
+    firmware::elf,
+    gpu::Chipset, //
+};
+
+pub(crate) struct FspFirmware {
+    /// FMC firmware image data (only the "image" ELF section).
+    #[expect(dead_code)]
+    pub(crate) fmc_image: Coherent<[u8]>,
+    /// Full FMC ELF for signature extraction.
+    #[expect(dead_code)]
+    pub(crate) fmc_elf: Firmware,
+}
+
+impl FspFirmware {
+    pub(crate) fn new(
+        dev: &device::Device<device::Bound>,
+        chipset: Chipset,
+        ver: &str,
+    ) -> Result<Self> {
+        let fw = super::request_firmware(dev, chipset, "fmc", ver)?;
+
+        // FSP expects only the "image" section, not the entire ELF file.
+        let fmc_image_data = elf::elf_section(fw.data(), "image").ok_or_else(|| {
+            dev_err!(dev, "FMC ELF file missing 'image' section\n");
+            EINVAL
+        })?;
+        let fmc_image = Coherent::from_slice(dev, fmc_image_data, GFP_KERNEL)?;
+
+        Ok(Self {
+            fmc_image,
+            fmc_elf: fw,
+        })
+    }
+}
diff --git a/drivers/gpu/nova-core/gpu.rs b/drivers/gpu/nova-core/gpu.rs
index 7dd736e5b1909..b7341bde04bef 100644
--- a/drivers/gpu/nova-core/gpu.rs
+++ b/drivers/gpu/nova-core/gpu.rs
@@ -137,6 +137,15 @@ impl Chipset {
         matches!(self.arch(), Architecture::Turing) || matches!(self, Self::GA100)
     }
 
+    /// Returns `true` if this chipset boots via FSP (Hopper and later), which requires the FMC
+    /// firmware image.
+    pub(crate) const fn uses_fsp(self) -> bool {
+        matches!(
+            self.arch(),
+            Architecture::Hopper | Architecture::BlackwellGB10x | Architecture::BlackwellGB20x
+        )
+    }
+
     /// Returns the address range of the PCI config mirror space.
     pub(crate) fn pci_config_mirror_range(self) -> Range<u32> {
         hal::gpu_hal(self).pci_config_mirror_range()
diff --git a/drivers/gpu/nova-core/gsp/hal/gh100.rs b/drivers/gpu/nova-core/gsp/hal/gh100.rs
index 9a4bb22578b3a..9681f9a73e86e 100644
--- a/drivers/gpu/nova-core/gsp/hal/gh100.rs
+++ b/drivers/gpu/nova-core/gsp/hal/gh100.rs
@@ -16,6 +16,10 @@ use crate::{
         Falcon, //
     },
     fb::FbLayout,
+    firmware::{
+        fsp::FspFirmware,
+        FIRMWARE_VERSION, //
+    },
     gpu::Chipset,
     gsp::{
         boot::BootUnloadGuard,
@@ -35,14 +39,16 @@ impl GspHal for Gh100 {
     fn boot<'a>(
         &self,
         _gsp: &'a Gsp,
-        _dev: &'a device::Device<device::Bound>,
+        dev: &'a device::Device<device::Bound>,
         _bar: &'a Bar0,
-        _chipset: Chipset,
+        chipset: Chipset,
         _fb_layout: &FbLayout,
         _wpr_meta: &Coherent<GspFwWprMeta>,
         _gsp_falcon: &'a Falcon<GspEngine>,
         _sec2_falcon: &'a Falcon<Sec2>,
     ) -> Result<BootUnloadGuard<'a>> {
+        let _fsp_fw = FspFirmware::new(dev, chipset, FIRMWARE_VERSION)?;
+
         Err(ENOTSUPP)
     }
 }