gpu: nvgpu: Use debug sig for NVDEC if on dbg SKU

Debug fused chips do not have production signature. Use debug
signature for memory unlock binary. Requires also exporting a HAL
for checking debug mode from PMU.

Bug 200445202

Change-Id: I7f88ed6db2fe1c614fe9d4074dbf974c3817f453
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1809225
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gm20b/pmu_gm20b.c b/drivers/gpu/nvgpu/gm20b/pmu_gm20b.c
index 38970f73..a46f8807 100644
--- a/drivers/gpu/nvgpu/gm20b/pmu_gm20b.c
+++ b/drivers/gpu/nvgpu/gm20b/pmu_gm20b.c
@@ -271,3 +271,9 @@ void pmu_dump_security_fuses_gm20b(struct gk20a *g)
         nvgpu_tegra_fuse_read_gcplex_config_fuse(g, &val);
         nvgpu_err(g, "FUSE_GCPLEX_CONFIG_FUSE_0: 0x%x", val);
 }
+
+bool gm20b_pmu_is_debug_mode_en(struct gk20a *g)
+{
+        u32 ctl_stat =  gk20a_readl(g, pwr_pmu_scpctl_stat_r());
+        return pwr_pmu_scpctl_stat_debug_mode_v(ctl_stat) != 0U;
+}