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ACR ucode is encrypted using different keys for prod/dbg boards. This change adds a check to select ACR ucode based on board type. Note: This support is added only for t19x. This patch also enables the prints "DEBUG MODE" indicative of board/ acr_ucode signature type and sctl and cpuctl reg values. Bug 2350733 Bug 2672832 Bug 2672836 JIRA NVGPU-4001 Change-Id: I936b811b5836152206b11ec615ee75d201939968 Signed-off-by: smadhavan <smadhavan@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2268880 Reviewed-by: Deepak Goyal <dgoyal@nvidia.com> Reviewed-by: Sagar Kamble <skamble@nvidia.com> Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> GVS: Gerrit_Virtual_Submit Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>