The GSP booter firmware in Turing and GA100 includes a third memory section called ImemNonSecure, which is non-secure IMEM. This section must be loaded separately from DMEM and secure IMEM, but only if it actually exists.
Signed-off-by: Timur Tabi <[email protected]> Reviewed-by: John Hubbard <[email protected]> --- drivers/gpu/nova-core/falcon.rs | 19 +++++++++++++++++-- drivers/gpu/nova-core/firmware/booter.rs | 9 +++++++++ drivers/gpu/nova-core/firmware/fwsec.rs | 5 +++++ 3 files changed, 31 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/nova-core/falcon.rs b/drivers/gpu/nova-core/falcon.rs index 310d4e75bad3..0d1a0f86d83c 100644 --- a/drivers/gpu/nova-core/falcon.rs +++ b/drivers/gpu/nova-core/falcon.rs @@ -242,6 +242,9 @@ fn from(value: PeregrineCoreSelect) -> Self { pub(crate) enum FalconMem { /// Secure Instruction Memory. ImemSecure, + /// Non-Secure Instruction Memory. + #[expect(unused)] + ImemNonSecure, /// Data Memory. Dmem, } @@ -351,6 +354,10 @@ pub(crate) trait FalconLoadParams { /// Returns the load parameters for Secure `IMEM`. fn imem_sec_load_params(&self) -> FalconLoadTarget; + /// Returns the load parameters for Non-Secure `IMEM`, + /// used only on Turing and GA100. + fn imem_ns_load_params(&self) -> Option<FalconLoadTarget>; + /// Returns the load parameters for `DMEM`. fn dmem_load_params(&self) -> FalconLoadTarget; @@ -460,7 +467,9 @@ fn dma_wr<F: FalconFirmware<Target = E>>( // // For DMEM we can fold the start offset into the DMA handle. let (src_start, dma_start) = match target_mem { - FalconMem::ImemSecure => (load_offsets.src_start, fw.dma_handle()), + FalconMem::ImemSecure | FalconMem::ImemNonSecure => { + (load_offsets.src_start, fw.dma_handle()) + } FalconMem::Dmem => ( 0, fw.dma_handle_with_offset(load_offsets.src_start.into_safe_cast())?, @@ -517,7 +526,7 @@ fn dma_wr<F: FalconFirmware<Target = E>>( let cmd = regs::NV_PFALCON_FALCON_DMATRFCMD::default() .set_size(DmaTrfCmdSize::Size256B) - .set_imem(target_mem == FalconMem::ImemSecure) + .set_imem(target_mem != FalconMem::Dmem) .set_sec(if sec { 1 } else { 0 }); for pos in (0..num_transfers).map(|i| i * DMA_LEN) { @@ -546,6 +555,12 @@ fn dma_wr<F: FalconFirmware<Target = E>>( /// Perform a DMA load into `IMEM` and `DMEM` of `fw`, and prepare the falcon to run it. pub(crate) fn dma_load<F: FalconFirmware<Target = E>>(&self, bar: &Bar0, fw: &F) -> Result { + // The Non-Secure section only exists on firmware used by Turing and GA100, and + // those platforms do not use DMA. + if fw.imem_ns_load_params().is_some() { + return Err(EINVAL); + } + self.dma_reset(bar); regs::NV_PFALCON_FBIF_TRANSCFG::update(bar, &E::ID, 0, |v| { v.set_target(FalconFbifTarget::CoherentSysmem) diff --git a/drivers/gpu/nova-core/firmware/booter.rs b/drivers/gpu/nova-core/firmware/booter.rs index 096cd01dbc9d..1b98bb47424c 100644 --- a/drivers/gpu/nova-core/firmware/booter.rs +++ b/drivers/gpu/nova-core/firmware/booter.rs @@ -253,6 +253,9 @@ impl<'a> FirmwareSignature<BooterFirmware> for BooterSignature<'a> {} pub(crate) struct BooterFirmware { // Load parameters for Secure `IMEM` falcon memory. imem_sec_load_target: FalconLoadTarget, + // Load parameters for Non-Secure `IMEM` falcon memory, + // used only on Turing and GA100 + imem_ns_load_target: Option<FalconLoadTarget>, // Load parameters for `DMEM` falcon memory. dmem_load_target: FalconLoadTarget, // BROM falcon parameters. @@ -359,6 +362,8 @@ pub(crate) fn new( dst_start: 0, len: app0.len, }, + // Exists only in the booter image for Turing and GA100 + imem_ns_load_target: None, dmem_load_target: FalconLoadTarget { src_start: load_hdr.os_data_offset, dst_start: 0, @@ -375,6 +380,10 @@ fn imem_sec_load_params(&self) -> FalconLoadTarget { self.imem_sec_load_target.clone() } + fn imem_ns_load_params(&self) -> Option<FalconLoadTarget> { + self.imem_ns_load_target.clone() + } + fn dmem_load_params(&self) -> FalconLoadTarget { self.dmem_load_target.clone() } diff --git a/drivers/gpu/nova-core/firmware/fwsec.rs b/drivers/gpu/nova-core/firmware/fwsec.rs index 6a2f5a0d4b15..e4009faba6c5 100644 --- a/drivers/gpu/nova-core/firmware/fwsec.rs +++ b/drivers/gpu/nova-core/firmware/fwsec.rs @@ -232,6 +232,11 @@ fn imem_sec_load_params(&self) -> FalconLoadTarget { } } + fn imem_ns_load_params(&self) -> Option<FalconLoadTarget> { + // Only used on Turing and GA100, so return None for now + None + } + fn dmem_load_params(&self) -> FalconLoadTarget { FalconLoadTarget { src_start: self.desc.imem_load_size, -- 2.52.0
