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| 0x04
| 0x04
|-
|-
| FALCON_DEBUGINFO
| [[#FALCON_DEBUGINFO|FALCON_DEBUGINFO]]
| 0x54501094
| 0x54501094
| 0x04
| 0x04
| 0x04
| 0x04
|-
|-
| TSEC_MCCIF_FIFOCTRL
| [[#TSEC_MCCIF_FIFOCTRL|TSEC_MCCIF_FIFOCTRL]]
| 0x54501604
| 0x54501604
| 0x04
| 0x04
| 0x04
| 0x04
|-
|-
| TSEC_MCCIF_UNK4
| [[#TSEC_MCCIF_FIFOCTRL1|TSEC_MCCIF_FIFOCTRL1]]
| 0x54501634
| 0x54501634
| 0x04
| 0x04
|-
|-
| TSEC_MCCIF_UNK5
| TSEC_MCCIF_UNK4
| 0x54501640
| 0x54501640
| 0x04
| 0x04
|-
|-
| [[#TSEC_MCCIF_UNK6|TSEC_MCCIF_UNK6]]
| [[#TSEC_MCCIF_UNK5|TSEC_MCCIF_UNK5]]
| 0x54501644
| 0x54501644
| 0x04
| 0x04
|-
|-
| [[#TSEC_MCCIF_UNK7|TSEC_MCCIF_UNK7]]
| [[#TSEC_MCCIF_UNK6|TSEC_MCCIF_UNK6]]
| 0x54501648
| 0x54501648
| 0x04
| 0x04
Used for detecting if Falcon is busy or not.
Used for detecting if Falcon is busy or not.
=== FALCON_DEBUGINFO ===
[6.0.0+] [[NV_services|nvservices]] sets this to 0x8005FF00 (physical DRAM address inside the GPU UCODE carveout) before starting the nvhost_tsec firmware.
=== FALCON_CPUCTL ===
=== FALCON_CPUCTL ===
|}
|}
=== TSEC_MCCIF_UNK6 ===
=== TSEC_MCCIF_FIFOCTRL ===
{| class="wikitable" border="1"
! Bits
! Description
|-
| 0
| TSEC_MCCIF_FIFOCTRL_RCLK_OVERRIDE
|-
| 1
| TSEC_MCCIF_FIFOCTRL_WCLK_OVERRIDE
|-
| 2
| TSEC_MCCIF_FIFOCTRL_WRCL_MCLE2X
|-
| 3
| TSEC_MCCIF_FIFOCTRL_RDMC_RDFAST
|-
| 4
| TSEC_MCCIF_FIFOCTRL_WRMC_CLLE2X
|-
| 5
| TSEC_MCCIF_FIFOCTRL_RDCL_RDFAST
|-
| 6
| TSEC_MCCIF_FIFOCTRL_CCLK_OVERRIDE
|-
| 7
| TSEC_MCCIF_FIFOCTRL_RCLK_OVR_MODE
|-
| 8
| TSEC_MCCIF_FIFOCTRL_WCLK_OVR_MODE
|}
=== TSEC_MCCIF_FIFOCTRL1 ===
{| class="wikitable" border="1"
! Bits
! Description
|-
| 0-15
| TSEC_MCCIF_FIFOCTRL1_SRD2MC_REORDER_DEPTH_LIMIT
|-
| 16-31
| TSEC_MCCIF_FIFOCTRL1_SWR2MC_REORDER_DEPTH_LIMIT
|}
=== TSEC_MCCIF_UNK5 ===
Used to control accesses to DRAM.
Used to control accesses to DRAM.
[6.0.0+] The nvhost_tsec firmware sets this register to 0x10 or 0x111110 before reading memory from the GPU UCODE carveout.
[6.0.0+] The nvhost_tsec firmware sets this register to 0x10 or 0x111110 before reading memory from the GPU UCODE carveout.
=== TSEC_MCCIF_UNK7 ===
=== TSEC_MCCIF_UNK6 ===
Used to control accesses to DRAM.
Used to control accesses to DRAM.
<code>00000000: f5 3c 0X 90 crng $cX</code> - seems to initialize a crypto register with random data.
<code>00000000: f5 3c 0X 90 crng $cX</code> - seems to initialize a crypto register with random data.
=== Secrets ===
Falcon's Authenticated Mode has access to 64 128-bit keys which are burned at factory. These keys can be loaded by using the $csecret instruction which takes the target crypto register and the key index as arguments.
{| class=wikitable
! Index || Notes
|-
| 0x00 || Used by the nvhost_tsec firmware. Debug mode only.
|-
| 0x03 || Used by the nvhost_tsec firmware.
|-
| 0x04 || Used by the nvhost_tsec firmware.
|-
| 0x05 || Used by the nvhost_tsec firmware.
|-
| 0x07 || Used by the nvhost_tsec firmware.
|-
| 0x09 || Used by the nvhost_tsec firmware.
|-
| 0x0B || Used by the nvhost_tsec firmware.
|-
| 0x0F || Used by the nvhost_tsec firmware.
|-
| 0x15 || Used by the nvhost_tsec firmware.
|-
| 0x26 || Used by [[#KeygenLdr|KeygenLdr]].
|-
| 0x3C || Used by the nvhost_tsec firmware.
|-
| 0x3F || Used by the nvhost_tsec firmware. Potentially per-console.
|}