[PATCH v4 3/6] gpu: nova-core: only boot FRTS if its region is allocated

[Timur Tabi <ttabi@nvidia.com>]

On some Nvidia GPUs (i.e. GA100), the FRTS region is not allocated
(its size is set to 0).  In such cases, FWSEC-FRTS should not be run.

Signed-off-by: Timur Tabi <ttabi@nvidia.com>
Reviewed-by: Eliot Courtney <ecourtney@nvidia.com>
---
 drivers/gpu/nova-core/gsp/boot.rs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/nova-core/gsp/boot.rs b/drivers/gpu/nova-core/gsp/boot.rs
index 18f356c9178e..5c56f0539dd7 100644
--- a/drivers/gpu/nova-core/gsp/boot.rs
+++ b/drivers/gpu/nova-core/gsp/boot.rs
@@ -155,7 +155,10 @@ pub(crate) fn boot(
         let fb_layout = FbLayout::new(chipset, bar, &gsp_fw)?;
         dev_dbg!(dev, "{:#x?}\n", fb_layout);
 
-        Self::run_fwsec_frts(dev, chipset, gsp_falcon, bar, &bios, &fb_layout)?;
+        // FWSEC-FRTS is not executed on chips where the FRTS region size is 0 (e.g. GA100).
+        if !fb_layout.frts.is_empty() {
+            Self::run_fwsec_frts(dev, chipset, gsp_falcon, bar, &bios, &fb_layout)?;
+        }
 
         let booter_loader = BooterFirmware::new(
             dev,
-- 
2.53.0