From 945c1eee7dbeb0dcafc9d151eaa46a4273d386fa Mon Sep 17 00:00:00 2001 From: Joel Fernandes Date: Mon, 10 Nov 2025 22:34:22 +0900 Subject: [PATCH] gpu: nova-core: falcon: Add support to write firmware version This will be needed by both the GSP boot code as well as GSP resume code in the sequencer. Reviewed-by: Lyude Paul Signed-off-by: Joel Fernandes Signed-off-by: Alexandre Courbot Message-ID: <20251110-gsp_boot-v9-14-8ae4058e3c0e@nvidia.com> --- drivers/gpu/nova-core/falcon.rs | 8 ++++++++ drivers/gpu/nova-core/regs.rs | 6 ++++++ 2 files changed, 14 insertions(+) diff --git a/drivers/gpu/nova-core/falcon.rs b/drivers/gpu/nova-core/falcon.rs index 4c1f36073533a..31904e1d804b3 100644 --- a/drivers/gpu/nova-core/falcon.rs +++ b/drivers/gpu/nova-core/falcon.rs @@ -621,4 +621,12 @@ impl Falcon { let cpuctl = regs::NV_PRISCV_RISCV_CPUCTL::read(bar, &E::ID); cpuctl.active_stat() } + + /// Write the application version to the OS register. + #[expect(dead_code)] + pub(crate) fn write_os_version(&self, bar: &Bar0, app_version: u32) { + regs::NV_PFALCON_FALCON_OS::default() + .set_value(app_version) + .write(bar, &E::ID); + } } diff --git a/drivers/gpu/nova-core/regs.rs b/drivers/gpu/nova-core/regs.rs index 5d5ba766cd610..274e53a1a44d7 100644 --- a/drivers/gpu/nova-core/regs.rs +++ b/drivers/gpu/nova-core/regs.rs @@ -230,6 +230,12 @@ register!(NV_PFALCON_FALCON_MAILBOX1 @ PFalconBase[0x00000044] { 31:0 value as u32; }); +// Used to store version information about the firmware running +// on the Falcon processor. +register!(NV_PFALCON_FALCON_OS @ PFalconBase[0x00000080] { + 31:0 value as u32; +}); + register!(NV_PFALCON_FALCON_RM @ PFalconBase[0x00000084] { 31:0 value as u32; }); -- 2.47.3