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The Nintendo Switch makes use of Tegra's fuse driver for a number of operations. This driver is mapped to physical address 0x7000F800 with a total size of 0x400 bytes and exposes several registers for fuse programming.
The Nintendo Switch makes use of Tegra's fuse driver for a number of operations. This driver is mapped to physical address 0x7000F800 with a total size of 0x400 bytes and exposes several registers for fuse programming.
Registers from 0x7000F800 to 0x7000F800 + 0xFF can be used to directly program the hardware fuse array, while registers from 0x7000F800 + 0x100 (FUSE_CHIP_REG_START_OFFSET) to 0x7000F800 + 0x3FC (FUSE_CHIP_REG_END_OFFSET) represent cached values read from certain fuses.
Registers from 0x7000F800 to 0x7000F800 + 0xFF can be used to directly program the hardware fuse bitmap, while registers from 0x7000F800 + 0x100 (FUSE_CHIP_REG_START_OFFSET) to 0x7000F800 + 0x3FC (FUSE_CHIP_REG_END_OFFSET) represent cached values read from certain fuses.
== Registers ==
== Registers ==
==== FUSE_PKC_DISABLE ====
==== FUSE_PKC_DISABLE ====
This caches the value of the pkc_disable fuse from the hardware array.
This caches the value of the pkc_disable fuse from the hardware bitmap.
==== FUSE_SPARE_BIT_2 ====
==== FUSE_SPARE_BIT_2 ====