The Nintendo Switch uses the Tegra's fuse driver for accessing one time programmable data.
Registers
The fuse driver is mapped to physical address 0x7000F800 with a total size of 0x400 bytes and exposes several registers for fuse programming.
Erista
Registers from 0x7000F800 to 0x7000F800 + 0xFC represent the actual fuse driver which can be used to directly program the hardware fuse bitmap.
Registers from 0x7000F800 + 0x100 (FUSE_CHIP_REG_START_OFFSET) to 0x7000F800 + 0x3FC (FUSE_CHIP_REG_END_OFFSET) represent the fuse cache which holds the sensed values of certain fuses.
Driver
| Name | Address |
|---|---|
| FUSE_FUSECTRL | 0x7000F800 |
| FUSE_FUSEADDR | 0x7000F804 |
| FUSE_FUSERDATA | 0x7000F808 |
| FUSE_FUSEWDATA | 0x7000F80C |
| FUSE_FUSETIME_RD1 | 0x7000F810 |
| FUSE_FUSETIME_RD2 | 0x7000F814 |
| FUSE_FUSETIME_PGM1 | 0x7000F818 |
| FUSE_FUSETIME_PGM2 | 0x7000F81C |
| FUSE_PRIV2INTFC_START | 0x7000F820 |
| FUSE_FUSEBYPASS | 0x7000F824 |
| FUSE_PRIVATEKEYDISABLE | 0x7000F828 |
| FUSE_DISABLEREGPROGRAM | 0x7000F82C |
| FUSE_WRITE_ACCESS_SW | 0x7000F830 |
| FUSE_PRIV2RESHIFT | 0x7000F83C |
| FUSE_FUSETIME_RD3 | 0x7000F84C |
| FUSE_PRIVATE_KEY0_NONZERO | 0x7000F880 |
| FUSE_PRIVATE_KEY1_NONZERO | 0x7000F884 |
| FUSE_PRIVATE_KEY2_NONZERO | 0x7000F888 |
| FUSE_PRIVATE_KEY3_NONZERO | 0x7000F88C |
| FUSE_PRIVATE_KEY4_NONZERO | 0x7000F890 |
FUSE_FUSECTRL
| Bits | Description |
|---|---|
| 0-1 | FUSE_FUSECTRL_CMD
0x00: IDLE 0x01: READ 0x02: WRITE 0x03: SENSE_CTRL |
| 16-20 | FUSE_FUSECTRL_STATE
0x00: STATE_RESET 0x01: STATE_POST_RESET 0x02: STATE_LOAD_ROW0 0x03: STATE_LOAD_ROW1 0x04: STATE_IDLE 0x05: STATE_READ_SETUP 0x06: STATE_READ_STROBE 0x07: STATE_SAMPLE_FUSES 0x08: STATE_READ_HOLD 0x09: STATE_FUSE_SRC_SETUP 0x0A: STATE_WRITE_SETUP 0x0B: STATE_WRITE_ADDR_SETUP 0x0C: STATE_WRITE_PROGRAM 0x0D: STATE_WRITE_ADDR_HOLD 0x0E: STATE_FUSE_SRC_HOLD 0x0F: STATE_LOAD_RIR 0x10: STATE_READ_BEFORE_WRITE_SETUP 0x11: STATE_READ_DEASSERT_PD |
| 21 | FUSE_FUSECTRL_MARGIN_READ |
| 22 | FUSE_FUSECTRL_RWL |
| 23 | FUSE_FUSECTRL_TRCS |
| 24 | FUSE_FUSECTRL_AT1 |
| 25 | FUSE_FUSECTRL_AT0 |
| 26 | FUSE_FUSECTRL_PD_CTRL |
| 30 | FUSE_FUSECTRL_FUSE_SENSE_DONE |
| 31 | FUSE_FUSECTRL_RECORD_SHIFT_DONE |
FUSE_FUSECTRL_CMD takes the fuse controller's operation mode. READ and WRITE interact directly with the hardware fuse bitmap while SENSE_CTRL flushes programmed values into the cache registers.
FUSE_FUSECTRL_STATE returns the current state of the fuse controller.
FUSE_FUSECTRL_MARGIN_READ changes the fuse read trip point setting to margin read mode.
FUSE_FUSECTRL_RWL allows accessing the RIR (redundant information row).
FUSE_FUSECTRL_TRCS allows accessing the TRCS (test rows and columns).
FUSE_FUSECTRL_AT1 selects the TRCS test column (always 0).
FUSE_FUSECTRL_AT0 selects the TRCS test row (0 or 1).
FUSE_FUSECTRL_PD_CTRL controls the fuse macro's power down mode.
FUSE_FUSECTRL_FUSE_SENSE_DONE is set if fuse sensing is completed.
FUSE_FUSECTRL_RECORD_SHIFT_DONE is set if record shifting is completed.
FUSE_FUSEADDR
| Bits | Description |
|---|---|
| 0-7 | FUSE_FUSEADDR_VLDFLD |
Takes the address of the fuse to be read/written/sensed.
FUSE_FUSERDATA
| Bits | Description |
|---|---|
| 0-31 | FUSE_FUSERDATA_DATA |
Returns the value read from the fuse.
FUSE_FUSEWDATA
| Bits | Description |
|---|---|
| 0-31 | FUSE_FUSEWDATA_DATA |
Takes the value to be written to the fuse.
FUSE_FUSETIME_RD1
| Bits | Description |
|---|---|
| 0-7 | FUSE_FUSETIME_RD1_TSUR_MAX |
| 8-15 | FUSE_FUSETIME_RD1_TSUR_FUSEOUT |
| 16-23 | FUSE_FUSETIME_RD1_THR_MAX |
FUSE_FUSETIME_RD1_TSUR_MAX takes the maximum time for STATE_READ_SETUP.
FUSE_FUSETIME_RD1_TSUR_FUSEOUT takes the time to spend on STATE_SAMPLE_FUSES.
FUSE_FUSETIME_RD1_THR_MAX takes the maximum time for STATE_READ_HOLD.
FUSE_FUSETIME_RD2
| Bits | Description |
|---|---|
| 0-15 | FUSE_FUSETIME_RD2_TWIDTH_RD |
Takes the read strobe pulse width used during STATE_READ_STROBE.
FUSE_FUSETIME_PGM1
| Bits | Description |
|---|---|
| 0-7 | FUSE_FUSETIME_PGM1_TSUP_MAX |
| 8-15 | FUSE_FUSETIME_PGM1_TSUP_ADDR |
| 16-23 | FUSE_FUSETIME_PGM1_THP_ADDR |
| 24-31 | FUSE_FUSETIME_PGM1_THP_PS |
FUSE_FUSETIME_PGM1_TSUP_MAX takes the maximum time for STATE_WRITE_SETUP.
FUSE_FUSETIME_PGM1_TSUP_ADDR takes the time to spend on STATE_WRITE_ADDR_SETUP.
FUSE_FUSETIME_PGM1_THP_ADDR takes the time to spend on STATE_WRITE_ADDR_HOLD.
FUSE_FUSETIME_PGM1_THP_PS takes the time to spend on STATE_FUSE_SRC_HOLD.
FUSE_FUSETIME_PGM2
| Bits | Description |
|---|---|
| 0-15 | FUSE_FUSETIME_PGM2_TWIDTH_PGM |
| 16-23 | FUSE_FUSETIME_PGM2_TSUP_PS |
| 24-31 | FUSE_FUSETIME_PGM2_THP_CSPS |
FUSE_FUSETIME_PGM2_TWIDTH_PGM takes the program strobe pulse width used during STATE_WRITE_PROGRAM.
FUSE_FUSETIME_PGM2_TSUP_PS takes the time to spend on STATE_FUSE_SRC_SETUP.
FUSE_FUSETIME_PGM2_THP_CSPS takes the time to spend on STATE_READ_BEFORE_WRITE_SETUP.
FUSE_PRIV2INTFC_START
| Bits | Description |
|---|---|
| 0 | FUSE_PRIV2INTFC_START_DATA |
| 1 | FUSE_PRIV2INTFC_SKIP_RECORDS |
Controls the interface between the internal fuse chip (INTFC) and the fuse cache registers (PRIV).
FUSE_FUSEBYPASS
| Bits | Description |
|---|---|
| 0 | FUSE_FUSEBYPASS_VAL |
If set, this register enables fuse bypass mode. This is only available in hardware where the production_mode fuse remains unburnt.
FUSE_PRIVATEKEYDISABLE
| Bits | Description |
|---|---|
| 0 | FUSE_PRIVATEKEYDISABLE_VAL |
| 4 | FUSE_PRIVATEKEYDISABLE_TZ_STICKY_BIT_VAL |
If set, this register hides the private_key fuses until the next reset.
FUSE_DISABLEREGPROGRAM
| Bits | Description |
|---|---|
| 0 | FUSE_DISABLEREGPROGRAM_VAL |
If set, this register disables fuse programming until the next reset.
FUSE_WRITE_ACCESS_SW
| Bits | Description |
|---|---|
| 0 | FUSE_WRITE_ACCESS_SW_CTRL |
| 16 | FUSE_WRITE_ACCESS_SW_STATUS |
Controls and returns the status of software writes to the fuse cache registers.
FUSE_PRIV2RESHIFT
| Bits | Description |
|---|---|
| 0 | FUSE_PRIV2RESHIFT_TRIGENABLE_VAL |
| 1 | FUSE_PRIV2RESHIFT_TRIG_1_FCPU0_VAL |
| 2 | FUSE_PRIV2RESHIFT_TRIG_1_FCPU1_VAL |
| 3 | FUSE_PRIV2RESHIFT_TRIG_1_FCPU2_VAL |
| 4 | FUSE_PRIV2RESHIFT_TRIG_1_FCPU3_VAL |
| 5 | FUSE_PRIV2RESHIFT_TRIG_1_FL2_TBANK0_VAL |
| 6 | FUSE_PRIV2RESHIFT_TRIG_1_FL2_TBANK1_VAL |
| 7 | FUSE_PRIV2RESHIFT_TRIG_1_FL2_TBANK2_VAL |
| 8 | FUSE_PRIV2RESHIFT_TRIG_1_FL2_TBANK3_VAL |
| 9 | FUSE_PRIV2RESHIFT_TRIG_1_SCPU_VAL |
| 10 | FUSE_PRIV2RESHIFT_TRIG_1_SL2_TBANK_VAL |
| 11 | FUSE_PRIV2RESHIFT_STATUS_1_FCPU0_VAL |
| 12 | FUSE_PRIV2RESHIFT_STATUS_1_FCPU1_VAL |
| 13 | FUSE_PRIV2RESHIFT_STATUS_1_FCPU2_VAL |
| 14 | FUSE_PRIV2RESHIFT_STATUS_1_FCPU3_VAL |
| 15 | FUSE_PRIV2RESHIFT_STATUS_1_FL2_TBANK0_VAL |
| 16 | FUSE_PRIV2RESHIFT_STATUS_1_FL2_TBANK1_VAL |
| 17 | FUSE_PRIV2RESHIFT_STATUS_1_FL2_TBANK2_VAL |
| 18 | FUSE_PRIV2RESHIFT_STATUS_1_FL2_TBANK3_VAL |
| 19 | FUSE_PRIV2RESHIFT_STATUS_1_SCPU_VAL |
| 20 | FUSE_PRIV2RESHIFT_STATUS_1_SL2_TBANK_VAL |
Controls and returns the status of the record shift (RESHIFT) hardware block used for RAM re-repair.
FUSE_FUSETIME_RD3
| Bits | Description |
|---|---|
| 0-15 | FUSE_FUSETIME_RD3_TSUR_PDCS |
Takes the time to spend on STATE_READ_DEASSERT_PD.
FUSE_PRIVATE_KEY0_NONZERO
| Bits | Description |
|---|---|
| 0 | FUSE_PRIVATE_KEY0_NONZERO_DATA |
Returns whether private_key0 is empty or not.
FUSE_PRIVATE_KEY1_NONZERO
| Bits | Description |
|---|---|
| 0 | FUSE_PRIVATE_KEY1_NONZERO_DATA |
Returns whether private_key1 is empty or not.
FUSE_PRIVATE_KEY2_NONZERO
| Bits | Description |
|---|---|
| 0 | FUSE_PRIVATE_KEY2_NONZERO_DATA |
Returns whether private_key2 is empty or not.
FUSE_PRIVATE_KEY3_NONZERO
| Bits | Description |
|---|---|
| 0 | FUSE_PRIVATE_KEY3_NONZERO_DATA |
Returns whether private_key3 is empty or not.
FUSE_PRIVATE_KEY4_NONZERO
| Bits | Description |
|---|---|
| 0 | FUSE_PRIVATE_KEY4_NONZERO_DATA |
Returns whether private_key4 is empty or not.
Cache
| Name | Address |
|---|---|
| FUSE_PRODUCTION_MODE | 0x7000F900 |
| FUSE_JTAG_SECUREID_VALID | 0x7000F904 |
| FUSE_ODM_LOCK | 0x7000F908 |
| FUSE_OPT_OPENGL_EN | 0x7000F90C |
| FUSE_SKU_INFO | 0x7000F910 |
| FUSE_CPU_SPEEDO_0_CALIB | 0x7000F914 |
| FUSE_CPU_IDDQ_CALIB | 0x7000F918 |
| FUSE_OPT_FT_REV | 0x7000F928 |
| FUSE_CPU_SPEEDO_1_CALIB | 0x7000F92C |
| FUSE_CPU_SPEEDO_2_CALIB | 0x7000F930 |
| FUSE_SOC_SPEEDO_0_CALIB | 0x7000F934 |
| FUSE_SOC_SPEEDO_1_CALIB | 0x7000F938 |
| FUSE_SOC_SPEEDO_2_CALIB | 0x7000F93C |
| FUSE_SOC_IDDQ_CALIB | 0x7000F940 |
| FUSE_FA | 0x7000F948 |
| FUSE_RESERVED_PRODUCTION | 0x7000F94C |
| FUSE_HDMI_LANE0_CALIB | 0x7000F950 |
| FUSE_HDMI_LANE1_CALIB | 0x7000F954 |
| FUSE_HDMI_LANE2_CALIB | 0x7000F958 |
| FUSE_HDMI_LANE3_CALIB | 0x7000F95C |
| FUSE_ENCRYPTION_RATE | 0x7000F960 |
| FUSE_PUBLIC_KEY0 | 0x7000F964 |
| FUSE_PUBLIC_KEY1 | 0x7000F968 |
| FUSE_PUBLIC_KEY2 | 0x7000F96C |
| FUSE_PUBLIC_KEY3 | 0x7000F970 |
| FUSE_PUBLIC_KEY4 | 0x7000F974 |
| FUSE_PUBLIC_KEY5 | 0x7000F978 |
| FUSE_PUBLIC_KEY6 | 0x7000F97C |
| FUSE_PUBLIC_KEY7 | 0x7000F980 |
| FUSE_TSENSOR1_CALIB | 0x7000F984 |
| FUSE_TSENSOR2_CALIB | 0x7000F988 |
| FUSE_OPT_CP_REV | 0x7000F990 |
| FUSE_OPT_PFG | 0x7000F994 |
| FUSE_TSENSOR0_CALIB | 0x7000F998 |
| FUSE_FIRST_BOOTROM_PATCH_SIZE | 0x7000F99C |
| FUSE_SECURITY_MODE | 0x7000F9A0 |
| FUSE_PRIVATE_KEY0 | 0x7000F9A4 |
| FUSE_PRIVATE_KEY1 | 0x7000F9A8 |
| FUSE_PRIVATE_KEY2 | 0x7000F9AC |
| FUSE_PRIVATE_KEY3 | 0x7000F9B0 |
| FUSE_PRIVATE_KEY4 | 0x7000F9B4 |
| FUSE_ARM_JTAG_DIS | 0x7000F9B8 |
| FUSE_BOOT_DEVICE_INFO | 0x7000F9BC |
| FUSE_RESERVED_SW | 0x7000F9C0 |
| FUSE_OPT_VP9_DISABLE | 0x7000F9C4 |
| FUSE_RESERVED_ODM0 | 0x7000F9C8 |
| FUSE_RESERVED_ODM1 | 0x7000F9CC |
| FUSE_RESERVED_ODM2 | 0x7000F9D0 |
| FUSE_RESERVED_ODM3 | 0x7000F9D4 |
| FUSE_RESERVED_ODM4 | 0x7000F9D8 |
| FUSE_RESERVED_ODM5 | 0x7000F9DC |
| FUSE_RESERVED_ODM6 | 0x7000F9E0 |
| FUSE_RESERVED_ODM7 | 0x7000F9E4 |
| FUSE_OBS_DIS | 0x7000F9E8 |
| FUSE_USB_CALIB | 0x7000F9F0 |
| FUSE_SKU_DIRECT_CONFIG | 0x7000F9F4 |
| FUSE_KFUSE_PRIVKEY_CTRL | 0x7000F9F8 |
| FUSE_PACKAGE_INFO | 0x7000F9FC |
| FUSE_OPT_VENDOR_CODE | 0x7000FA00 |
| FUSE_OPT_FAB_CODE | 0x7000FA04 |
| FUSE_OPT_LOT_CODE_0 | 0x7000FA08 |
| FUSE_OPT_LOT_CODE_1 | 0x7000FA0C |
| FUSE_OPT_WAFER_ID | 0x7000FA10 |
| FUSE_OPT_X_COORDINATE | 0x7000FA14 |
| FUSE_OPT_Y_COORDINATE | 0x7000FA18 |
| FUSE_OPT_SEC_DEBUG_EN | 0x7000FA1C |
| FUSE_OPT_OPS_RESERVED | 0x7000FA20 |
| FUSE_SATA_CALIB | 0x7000FA24 |
| FUSE_GPU_IDDQ_CALIB | 0x7000FA28 |
| FUSE_TSENSOR3_CALIB | 0x7000FA2C |
| FUSE_CLOCK_BOUNDOUT0 | 0x7000FA30 |
| FUSE_CLOCK_BOUNDOUT1 | 0x7000FA34 |
| FUSE_OPT_SAMPLE_TYPE | 0x7000FA44 |
| FUSE_OPT_SUBREVISION | 0x7000FA48 |
| FUSE_OPT_SW_RESERVED_0 | 0x7000FA4C |
| FUSE_OPT_SW_RESERVED_1 | 0x7000FA50 |
| FUSE_TSENSOR4_CALIB | 0x7000FA54 |
| FUSE_TSENSOR5_CALIB | 0x7000FA58 |
| FUSE_TSENSOR6_CALIB | 0x7000FA5C |
| FUSE_TSENSOR7_CALIB | 0x7000FA60 |
| FUSE_OPT_PRIV_SEC_DIS | 0x7000FA64 |
| FUSE_PKC_DISABLE | 0x7000FA68 |
| FUSE_FUSE2TSEC_DEBUG_DISABLE | 0x7000FA7C |
| FUSE_TSENSOR_COMMON | 0x7000FA80 |
| FUSE_OPT_CP_BIN | 0x7000FA84 |
| FUSE_OPT_GPU_DISABLE | 0x7000FA88 |
| FUSE_OPT_FT_BIN | 0x7000FA8C |
| FUSE_OPT_DONE_MAP | 0x7000FA90 |
| FUSE_APB2JTAG_DISABLE | 0x7000FA98 |
| FUSE_ODM_INFO | 0x7000FA9C |
| FUSE_ARM_CRYPT_DE_FEATURE | 0x7000FAA8 |
| FUSE_WOA_SKU_FLAG | 0x7000FAC0 |
| FUSE_ECO_RESERVE_1 | 0x7000FAC4 |
| FUSE_GCPLEX_CONFIG_FUSE | 0x7000FAC8 |
| FUSE_PRODUCTION_MONTH | 0x7000FACC |
| FUSE_RAM_REPAIR_INDICATOR | 0x7000FAD0 |
| FUSE_TSENSOR9_CALIB | 0x7000FAD4 |
| FUSE_VMIN_CALIBRATION | 0x7000FADC |
| FUSE_AGING_SENSOR_CALIBRATION | 0x7000FAE0 |
| FUSE_DEBUG_AUTHENTICATION | 0x7000FAE4 |
| FUSE_SECURE_PROVISION_INDEX | 0x7000FAE8 |
| FUSE_SECURE_PROVISION_INFO | 0x7000FAEC |
| FUSE_OPT_GPU_DISABLE_CP1 | 0x7000FAF0 |
| FUSE_SPARE_ENDIS | 0x7000FAF4 |
| FUSE_ECO_RESERVE_0 | 0x7000FAF8 |
| FUSE_RESERVED_CALIB0 | 0x7000FB04 |
| FUSE_RESERVED_CALIB1 | 0x7000FB08 |
| FUSE_OPT_GPU_TPC0_DISABLE | 0x7000FB0C |
| FUSE_OPT_GPU_TPC0_DISABLE_CP1 | 0x7000FB10 |
| FUSE_OPT_CPU_DISABLE | 0x7000FB14 |
| FUSE_OPT_CPU_DISABLE_CP1 | 0x7000FB18 |
| FUSE_TSENSOR10_CALIB | 0x7000FB1C |
| FUSE_TSENSOR10_CALIB_AUX | 0x7000FB20 |
| FUSE_OPT_RAM_SVOP_DP | 0x7000FB24 |
| FUSE_OPT_RAM_SVOP_PDP | 0x7000FB28 |
| FUSE_OPT_RAM_SVOP_REG | 0x7000FB2C |
| FUSE_OPT_RAM_SVOP_SP | 0x7000FB30 |
| FUSE_OPT_RAM_SVOP_SMPDP | 0x7000FB34 |
| FUSE_OPT_GPU_TPC0_DISABLE_CP2 | 0x7000FB38 |
| FUSE_OPT_GPU_TPC1_DISABLE | 0x7000FB3C |
| FUSE_OPT_GPU_TPC1_DISABLE_CP1 | 0x7000FB40 |
| FUSE_OPT_GPU_TPC1_DISABLE_CP2 | 0x7000FB44 |
| FUSE_OPT_CPU_DISABLE_CP2 | 0x7000FB48 |
| FUSE_OPT_GPU_DISABLE_CP2 | 0x7000FB4C |
| FUSE_USB_CALIB_EXT | 0x7000FB50 |
| FUSE_RESERVED_FIELD | 0x7000FB54 |
| FUSE_SPARE_REALIGNMENT_REG | 0x7000FB7C |
| FUSE_SPARE_BIT_0 | 0x7000FB80 |
| FUSE_SPARE_BIT_1 | 0x7000FB84 |
| FUSE_SPARE_BIT_2 | 0x7000FB88 |
| FUSE_SPARE_BIT_3 | 0x7000FB8C |
| FUSE_SPARE_BIT_4 | 0x7000FB90 |
| FUSE_SPARE_BIT_5 | 0x7000FB94 |
| FUSE_SPARE_BIT_6 | 0x7000FB98 |
| FUSE_SPARE_BIT_7 | 0x7000FB9C |
| FUSE_SPARE_BIT_8 | 0x7000FBA0 |
| FUSE_SPARE_BIT_9 | 0x7000FBA4 |
| FUSE_SPARE_BIT_10 | 0x7000FBA8 |
| FUSE_SPARE_BIT_11 | 0x7000FBAC |
| FUSE_SPARE_BIT_12 | 0x7000FBB0 |
| FUSE_SPARE_BIT_13 | 0x7000FBB4 |
| FUSE_SPARE_BIT_14 | 0x7000FBB8 |
| FUSE_SPARE_BIT_15 | 0x7000FBBC |
| FUSE_SPARE_BIT_16 | 0x7000FBC0 |
| FUSE_SPARE_BIT_17 | 0x7000FBC4 |
| FUSE_SPARE_BIT_18 | 0x7000FBC8 |
| FUSE_SPARE_BIT_19 | 0x7000FBCC |
| FUSE_SPARE_BIT_20 | 0x7000FBD0 |
| FUSE_SPARE_BIT_21 | 0x7000FBD4 |
| FUSE_SPARE_BIT_22 | 0x7000FBD8 |
| FUSE_SPARE_BIT_23 | 0x7000FBDC |
| FUSE_SPARE_BIT_24 | 0x7000FBE0 |
| FUSE_SPARE_BIT_25 | 0x7000FBE4 |
| FUSE_SPARE_BIT_26 | 0x7000FBE8 |
| FUSE_SPARE_BIT_27 | 0x7000FBEC |
| FUSE_SPARE_BIT_28 | 0x7000FBF0 |
| FUSE_SPARE_BIT_29 | 0x7000FBF4 |
| FUSE_SPARE_BIT_30 | 0x7000FBF8 |
| FUSE_SPARE_BIT_31 | 0x7000FBFC |
FUSE_SKU_INFO
Stores the SKU ID (must be 0x83).
FUSE_OPT_FT_REV
Stores the FT (Final Test) revision.
Original Erista units have this value set to 0xA0 (revision 5.0). The first batch of patched Erista units have this value set to 0xC0 (revision 6.0). The second batch of patched Erista units have this value set to 0xE0 (revision 7.0).
Mariko and Lite units have this value set to 0x60 (revision 3.0). OLED units have this value set to 0x81 (revision 4.1).
FUSE_SOC_SPEEDO_1_CALIB
Stores the bootrom patch version.
FUSE_FA
Stores failure analysis mode.
FUSE_PUBLIC_KEY
Stores the SHA256 hash of the 2048-bit RSA key expected at BCT+0x210.
FUSE_OPT_CP_REV
Stores the CP (Chip Probing) revision.
Original Erista units have this value set to 0xA0 (revision 5.0). Patched Erista units have this value set to 0x103 (revision 8.3).
Mariko units have this value set to 0x40 (revision 2.0). Lite units have this value set to 0x41 (revision 2.1). OLED units have this value set to 0x100 (revision 8.0).
FUSE_PRIVATE_KEY
Stores the 160-bit private key (128 bit SBK + 32-bit device key).
Reads to these registers after the SBK is locked out produce all-FF output.
FUSE_RESERVED_SW
| Bits | Description |
|---|---|
| 0-2 | Boot device |
| 3 | Skip device selection straps |
| 4 | Enable charger detection |
| 5 | Enable watchdog |
| 6 | Forced RCM two button mode (0 = VOLUME_UP, 1 = VOLUME_UP + HOME) |
| 7 | RCM USB controller mode (0 = USB 2.0, 1 = XUSB) |
Stores software reserved configuration values.
Original Erista units have the RCM USB controller mode set to USB 2.0, while the first batch of patched Erista units have the RCM USB controller mode set to XUSB.
FUSE_RESERVED_ODM0
| Bits | Description |
|---|---|
| 0-31 | OdmTestId0 |
FUSE_RESERVED_ODM1
| Bits | Description |
|---|---|
| 0-31 | OdmTestId1 |
FUSE_RESERVED_ODM2
| Bits | Description |
|---|---|
| 0-31 | OdmTestId2 |
[5.0.0+] If FormatVersion is 1, this becomes:
| Bits | Description |
|---|---|
| 0-4 | DeviceUniqueKeyGeneration |
| 5-31 | Reserved |
FUSE_RESERVED_ODM3
| Bits | Description |
|---|---|
| 0-31 | OdmTestId3 |
[5.0.0+] If FormatVersion is 1, this becomes:
| Bits | Description |
|---|---|
| 0-31 | Reserved |
FUSE_RESERVED_ODM4
| Bits | Description |
|---|---|
| 0-1 | HardwareState1 |
| 2 | HardwareType1 |
| [1.0.0-3.0.2] 3-5
[4.0.0+] 3-7 |
DramId |
| 8 | HardwareType2 |
| 9 | HardwareState2 |
| 10 | [3.0.0+] QuestState |
| 11 | [5.0.0+] FormatVersion |
| 16-19 | [4.0.0+] HardwareType3 |
Stores device configuration parameters.
FUSE_RESERVED_ODM5
Empty and unused.
FUSE_RESERVED_ODM6
Returns the value of the reserved_odm6 anti-downgrade fuse.
FUSE_RESERVED_ODM7
Returns the value of the reserved_odm7 anti-downgrade fuse.
FUSE_SKU_DIRECT_CONFIG
| Bits | Description |
|---|---|
| 0 | Disable SCPU |
| 1 | Disable FCPU0 |
| 2 | Disable FCPU1 |
| 3 | Disable FCPU2 |
| 4 | Disable FCPU3 |
| 5 | Disable all CPUs |
Controls which CPUs can be used.
Erista units have this value set to 0x00 (both Cortex-A53 and Cortex-A57 clusters are usable).
Mariko units have this value set to 0x01 (only the Cortex-A57 cluster is usable).
FUSE_OPT_SEC_DEBUG_EN
Controls the Falcon SCP debug mode.
FUSE_OPT_PRIV_SEC_DIS
Controls the Falcon Light Secure feature.
FUSE_PKC_DISABLE
Returns if public key crypto is used or not.
FUSE_ECO_RESERVE_0
Returns the chip unique AID.
FUSE_SPARE_BIT_2
| Bits | Description |
|---|---|
| 0 | Speedo fusing revision |
FUSE_SPARE_BIT_3
| Bits | Description |
|---|---|
| 0 | Speedo fusing revision |
FUSE_SPARE_BIT_4
| Bits | Description |
|---|---|
| 0 | Speedo fusing revision |
FUSE_SPARE_BIT_5
Must be non-zero on retail units, otherwise the first bootloader panics. On prototype units it can be zero, which tells the bootloader to choose from two pre-production master key seeds. If set to non-zero on a prototype unit, it tells the bootloader to choose from two master key seeds (with the second one being the same as the retail master key seed).
[4.0.0+] This value is no longer used during boot.
Mariko
Registers from 0x7000F800 to 0x7000F800 + 0x94 represent the actual fuse driver which can be used to directly program the hardware fuse bitmap.
Registers from 0x7000F800 + 0x98 to 0x7000F800 + 0x3FC represent the fuse cache which holds the sensed values of certain fuses.
Driver
Same registers as in the Erista's fuse driver.
Cache
| Name | Address |
|---|---|
| FUSE_RESERVED_ODM8 | 0x7000F898 |
| FUSE_RESERVED_ODM9 | 0x7000F89C |
| FUSE_RESERVED_ODM10 | 0x7000F8A0 |
| FUSE_RESERVED_ODM11 | 0x7000F8A4 |
| FUSE_RESERVED_ODM12 | 0x7000F8A8 |
| FUSE_RESERVED_ODM13 | 0x7000F8AC |
| FUSE_RESERVED_ODM14 | 0x7000F8B0 |
| FUSE_RESERVED_ODM15 | 0x7000F8B4 |
| FUSE_RESERVED_ODM16 | 0x7000F8B8 |
| FUSE_RESERVED_ODM17 | 0x7000F8BC |
| FUSE_RESERVED_ODM18 | 0x7000F8C0 |
| FUSE_RESERVED_ODM19 | 0x7000F8C4 |
| FUSE_RESERVED_ODM20 | 0x7000F8C8 |
| FUSE_RESERVED_ODM21 | 0x7000F8CC |
| FUSE_KEK00 | 0x7000F8D0 |
| FUSE_KEK01 | 0x7000F8D4 |
| FUSE_KEK02 | 0x7000F8D8 |
| FUSE_KEK03 | 0x7000F8DC |
| FUSE_BEK00 | 0x7000F8E0 |
| FUSE_BEK01 | 0x7000F8E4 |
| FUSE_BEK02 | 0x7000F8E8 |
| FUSE_BEK03 | 0x7000F8EC |
| 0x7000F8F0 | |
| 0x7000F8F4 | |
| 0x7000F8F8 | |
| 0x7000F8FC | |
| FUSE_PRODUCTION_MODE | 0x7000F900 |
| FUSE_JTAG_SECUREID_VALID | 0x7000F904 |
| FUSE_ODM_LOCK | 0x7000F908 |
| FUSE_OPT_OPENGL_EN | 0x7000F90C |
| FUSE_SKU_INFO | 0x7000F910 |
| FUSE_CPU_SPEEDO_0_CALIB | 0x7000F914 |
| FUSE_CPU_IDDQ_CALIB | 0x7000F918 |
| FUSE_RESERVED_ODM22 | 0x7000F91C |
| FUSE_RESERVED_ODM23 | 0x7000F920 |
| FUSE_RESERVED_ODM24 | 0x7000F924 |
| FUSE_OPT_FT_REV | 0x7000F928 |
| FUSE_CPU_SPEEDO_1_CALIB | 0x7000F92C |
| FUSE_CPU_SPEEDO_2_CALIB | 0x7000F930 |
| FUSE_SOC_SPEEDO_0_CALIB | 0x7000F934 |
| FUSE_SOC_SPEEDO_1_CALIB | 0x7000F938 |
| FUSE_SOC_SPEEDO_2_CALIB | 0x7000F93C |
| FUSE_SOC_IDDQ_CALIB | 0x7000F940 |
| FUSE_RESERVED_ODM25 | 0x7000F944 |
| FUSE_FA | 0x7000F948 |
| FUSE_RESERVED_PRODUCTION | 0x7000F94C |
| FUSE_HDMI_LANE0_CALIB | 0x7000F950 |
| FUSE_HDMI_LANE1_CALIB | 0x7000F954 |
| FUSE_HDMI_LANE2_CALIB | 0x7000F958 |
| FUSE_HDMI_LANE3_CALIB | 0x7000F95C |
| FUSE_ENCRYPTION_RATE | 0x7000F960 |
| FUSE_PUBLIC_KEY0 | 0x7000F964 |
| FUSE_PUBLIC_KEY1 | 0x7000F968 |
| FUSE_PUBLIC_KEY2 | 0x7000F96C |
| FUSE_PUBLIC_KEY3 | 0x7000F970 |
| FUSE_PUBLIC_KEY4 | 0x7000F974 |
| FUSE_PUBLIC_KEY5 | 0x7000F978 |
| FUSE_PUBLIC_KEY6 | 0x7000F97C |
| FUSE_PUBLIC_KEY7 | 0x7000F980 |
| FUSE_TSENSOR1_CALIB | 0x7000F984 |
| FUSE_TSENSOR2_CALIB | 0x7000F988 |
| FUSE_OPT_SECURE_SCC_DIS | 0x7000F98C |
| FUSE_OPT_CP_REV | 0x7000F990 |
| FUSE_OPT_PFG | 0x7000F994 |
| FUSE_TSENSOR0_CALIB | 0x7000F998 |
| FUSE_FIRST_BOOTROM_PATCH_SIZE | 0x7000F99C |
| FUSE_SECURITY_MODE | 0x7000F9A0 |
| FUSE_PRIVATE_KEY0 | 0x7000F9A4 |
| FUSE_PRIVATE_KEY1 | 0x7000F9A8 |
| FUSE_PRIVATE_KEY2 | 0x7000F9AC |
| FUSE_PRIVATE_KEY3 | 0x7000F9B0 |
| FUSE_PRIVATE_KEY4 | 0x7000F9B4 |
| FUSE_ARM_JTAG_DIS | 0x7000F9B8 |
| FUSE_BOOT_DEVICE_INFO | 0x7000F9BC |
| FUSE_RESERVED_SW | 0x7000F9C0 |
| FUSE_OPT_VP9_DISABLE | 0x7000F9C4 |
| FUSE_RESERVED_ODM0 | 0x7000F9C8 |
| FUSE_RESERVED_ODM1 | 0x7000F9CC |
| FUSE_RESERVED_ODM2 | 0x7000F9D0 |
| FUSE_RESERVED_ODM3 | 0x7000F9D4 |
| FUSE_RESERVED_ODM4 | 0x7000F9D8 |
| FUSE_RESERVED_ODM5 | 0x7000F9DC |
| FUSE_RESERVED_ODM6 | 0x7000F9E0 |
| FUSE_RESERVED_ODM7 | 0x7000F9E4 |
| FUSE_OBS_DIS | 0x7000F9E8 |
| 0x7000F9EC | |
| FUSE_USB_CALIB | 0x7000F9F0 |
| FUSE_SKU_DIRECT_CONFIG | 0x7000F9F4 |
| FUSE_KFUSE_PRIVKEY_CTRL | 0x7000F9F8 |
| FUSE_PACKAGE_INFO | 0x7000F9FC |
| FUSE_OPT_VENDOR_CODE | 0x7000FA00 |
| FUSE_OPT_FAB_CODE | 0x7000FA04 |
| FUSE_OPT_LOT_CODE_0 | 0x7000FA08 |
| FUSE_OPT_LOT_CODE_1 | 0x7000FA0C |
| FUSE_OPT_WAFER_ID | 0x7000FA10 |
| FUSE_OPT_X_COORDINATE | 0x7000FA14 |
| FUSE_OPT_Y_COORDINATE | 0x7000FA18 |
| FUSE_OPT_SEC_DEBUG_EN | 0x7000FA1C |
| FUSE_OPT_OPS_RESERVED | 0x7000FA20 |
| 0x7000FA24 | |
| FUSE_GPU_IDDQ_CALIB | 0x7000FA28 |
| FUSE_TSENSOR3_CALIB | 0x7000FA2C |
| FUSE_CLOCK_BONDOUT0 | 0x7000FA30 |
| FUSE_CLOCK_BONDOUT1 | 0x7000FA34 |
| FUSE_RESERVED_ODM26 | 0x7000FA38 |
| FUSE_RESERVED_ODM27 | 0x7000FA3C |
| FUSE_RESERVED_ODM28 | 0x7000FA40 |
| FUSE_OPT_SAMPLE_TYPE | 0x7000FA44 |
| FUSE_OPT_SUBREVISION | 0x7000FA48 |
| FUSE_OPT_SW_RESERVED_0 | 0x7000FA4C |
| FUSE_OPT_SW_RESERVED_1 | 0x7000FA50 |
| FUSE_TSENSOR4_CALIB | 0x7000FA54 |
| FUSE_TSENSOR5_CALIB | 0x7000FA58 |
| FUSE_TSENSOR6_CALIB | 0x7000FA5C |
| FUSE_TSENSOR7_CALIB | 0x7000FA60 |
| FUSE_OPT_PRIV_SEC_DIS | 0x7000FA64 |
| FUSE_BOOT_SECURITY_INFO | 0x7000FA68 |
| 0x7000FA6C | |
| 0x7000FA70 | |
| 0x7000FA74 | |
| 0x7000FA78 | |
| FUSE_FUSE2TSEC_DEBUG_DISABLE | 0x7000FA7C |
| FUSE_TSENSOR_COMMON | 0x7000FA80 |
| FUSE_OPT_CP_BIN | 0x7000FA84 |
| FUSE_OPT_GPU_DISABLE | 0x7000FA88 |
| FUSE_OPT_FT_BIN | 0x7000FA8C |
| FUSE_OPT_DONE_MAP | 0x7000FA90 |
| FUSE_RESERVED_ODM29 | 0x7000FA94 |
| FUSE_APB2JTAG_DISABLE | 0x7000FA98 |
| FUSE_ODM_INFO | 0x7000FA9C |
| FUSE_ARM_CRYPT_DE_FEATURE | 0x7000FAA8 |
| 0x7000FAB0 | |
| 0x7000FAB4 | |
| 0x7000FAB8 | |
| 0x7000FABC | |
| FUSE_WOA_SKU_FLAG | 0x7000FAC0 |
| FUSE_ECO_RESERVE_1 | 0x7000FAC4 |
| FUSE_GCPLEX_CONFIG_FUSE | 0x7000FAC8 |
| FUSE_PRODUCTION_MONTH | 0x7000FACC |
| FUSE_RAM_REPAIR_INDICATOR | 0x7000FAD0 |
| FUSE_TSENSOR9_CALIB | 0x7000FAD4 |
| FUSE_VMIN_CALIBRATION | 0x7000FADC |
| FUSE_AGING_SENSOR_CALIBRATION | 0x7000FAE0 |
| FUSE_DEBUG_AUTHENTICATION | 0x7000FAE4 |
| FUSE_SECURE_PROVISION_INDEX | 0x7000FAE8 |
| FUSE_SECURE_PROVISION_INFO | 0x7000FAEC |
| FUSE_OPT_GPU_DISABLE_CP1 | 0x7000FAF0 |
| FUSE_SPARE_ENDIS | 0x7000FAF4 |
| FUSE_ECO_RESERVE_0 | 0x7000FAF8 |
| FUSE_RESERVED_CALIB0 | 0x7000FB04 |
| FUSE_RESERVED_CALIB1 | 0x7000FB08 |
| FUSE_OPT_GPU_TPC0_DISABLE | 0x7000FB0C |
| FUSE_OPT_GPU_TPC0_DISABLE_CP1 | 0x7000FB10 |
| FUSE_OPT_CPU_DISABLE | 0x7000FB14 |
| FUSE_OPT_CPU_DISABLE_CP1 | 0x7000FB18 |
| FUSE_TSENSOR10_CALIB | 0x7000FB1C |
| FUSE_TSENSOR10_CALIB_AUX | 0x7000FB20 |
| 0x7000FB24 | |
| 0x7000FB28 | |
| 0x7000FB2C | |
| 0x7000FB30 | |
| 0x7000FB34 | |
| FUSE_OPT_GPU_TPC0_DISABLE_CP2 | 0x7000FB38 |
| FUSE_OPT_GPU_TPC1_DISABLE | 0x7000FB3C |
| FUSE_OPT_GPU_TPC1_DISABLE_CP1 | 0x7000FB40 |
| FUSE_OPT_GPU_TPC1_DISABLE_CP2 | 0x7000FB44 |
| FUSE_OPT_CPU_DISABLE_CP2 | 0x7000FB48 |
| FUSE_OPT_GPU_DISABLE_CP2 | 0x7000FB4C |
| FUSE_USB_CALIB_EXT | 0x7000FB50 |
| FUSE_RESERVED_FIELD | 0x7000FB54 |
| FUSE_SPARE_REALIGNMENT_REG | 0x7000FB7C |
| FUSE_SPARE_BIT_0 | 0x7000FB80 |
| FUSE_SPARE_BIT_1 | 0x7000FB84 |
| FUSE_SPARE_BIT_2 | 0x7000FB88 |
| FUSE_SPARE_BIT_3 | 0x7000FB8C |
| FUSE_SPARE_BIT_4 | 0x7000FB90 |
| FUSE_SPARE_BIT_5 | 0x7000FB94 |
| FUSE_SPARE_BIT_6 | 0x7000FB98 |
| FUSE_SPARE_BIT_7 | 0x7000FB9C |
| FUSE_SPARE_BIT_8 | 0x7000FBA0 |
| FUSE_SPARE_BIT_9 | 0x7000FBA4 |
| FUSE_SPARE_BIT_10 | 0x7000FBA8 |
| FUSE_SPARE_BIT_11 | 0x7000FBAC |
| FUSE_SPARE_BIT_12 | 0x7000FBB0 |
| FUSE_SPARE_BIT_13 | 0x7000FBB4 |
| FUSE_SPARE_BIT_14 | 0x7000FBB8 |
| FUSE_SPARE_BIT_15 | 0x7000FBBC |
| FUSE_SPARE_BIT_16 | 0x7000FBC0 |
| FUSE_SPARE_BIT_17 | 0x7000FBC4 |
| FUSE_SPARE_BIT_18 | 0x7000FBC8 |
| FUSE_SPARE_BIT_19 | 0x7000FBCC |
| FUSE_SPARE_BIT_20 | 0x7000FBD0 |
| FUSE_SPARE_BIT_21 | 0x7000FBD4 |
| FUSE_SPARE_BIT_22 | 0x7000FBD8 |
| FUSE_SPARE_BIT_23 | 0x7000FBDC |
| FUSE_SPARE_BIT_24 | 0x7000FBE0 |
| FUSE_SPARE_BIT_25 | 0x7000FBE4 |
| FUSE_SPARE_BIT_26 | 0x7000FBE8 |
| FUSE_SPARE_BIT_27 | 0x7000FBEC |
| FUSE_SPARE_BIT_28 | 0x7000FBF0 |
| FUSE_SPARE_BIT_29 | 0x7000FBF4 |
FUSE_RESERVED_ODM28
| Bits | Description |
|---|---|
| 0 | RegulatorType |
FUSE_BOOT_SECURITY_INFO
| Bits | Description |
|---|---|
| 0-1 | Authentication (0 = AES_CMAC, 1 = PKC_RSA) |
| 2 | Encryption (0 = DISABLE, 1 = ENABLE) |
| 3 | Fuse encryption (0 = DISABLE, 1 = ENABLE) |
| 4-6 | Fuse encryption select (0 = TEST_KEY, 1 = NVIDIA_KEY, 2 to 7 = OEM_KEY_1 to OEM_KEY_6) |
Stores configuration values for the new boot security mechanism.
Mariko units have authentication set to PKC_RSA, encryption enabled, fuse encryption enabled and fuse encryption select set to OEM_KEY_1 (development) or OEM_KEY_2 (retail).
Bitmap
The actual hardware fuses are stored in a bitmap and may be programmed through the fuse driver after enabling fuse programming.
Fuse numbers are relative to the start of the fuse bitmap where each element is a 4 byte word and has a redundant alias. A single fuse write operation must always write the same value to fuse_bitmap + ((fuse_number + 0) << 2) (PRIMARY_ALIAS) and fuse_bitmap + ((fuse_number + 1) << 2) (REDUNDANT_ALIAS). However, spare bits and all fuses afterwards in the fuse bitmap, no longer have a redundant alias.
Erista
| Name | Number | Redundant number | Bits |
|---|---|---|---|
| enable_fuse_program | 0 | 1 | 0 |
| disable_fuse_program | 0 | 1 | 1 |
| bypass_fuses | 0 | 1 | 2 |
| jtag_direct_access_disable | 0 | 1 | 3 |
| production_mode | 0 | 1 | 4 |
| jtag_secureid_valid | 0 | 1 | 5 |
| odm_lock | 0 | 1 | 6-9 |
| fa_mode | 0 | 1 | 10 |
| security_mode | 0 | 1 | 11 |
| arm_debug_dis | 0 | 1 | 12 |
| obs_dis | 0 | 1 | 13 |
| public_key0 | 10 | 11 | 30-31 |
| public_key0 | 12 | 13 | 0-29 |
| public_key1 | 12 | 13 | 30-31 |
| public_key1 | 14 | 15 | 0-29 |
| public_key2 | 14 | 15 | 30-31 |
| public_key2 | 16 | 17 | 0-29 |
| public_key3 | 16 | 17 | 30-31 |
| public_key3 | 18 | 19 | 0-29 |
| public_key4 | 18 | 19 | 30-31 |
| public_key4 | 20 | 21 | 0-29 |
| public_key5 | 20 | 21 | 30-31 |
| public_key5 | 22 | 23 | 0-29 |
| public_key6 | 22 | 23 | 30-31 |
| public_key6 | 24 | 25 | 0-29 |
| public_key7 | 24 | 25 | 30-31 |
| public_key7 | 26 | 27 | 0-29 |
| private_key0 | 34 | 35 | 12-31 |
| private_key0 | 36 | 37 | 0-11 |
| private_key1 | 36 | 37 | 12-31 |
| private_key1 | 38 | 39 | 0-11 |
| private_key2 | 38 | 39 | 12-31 |
| private_key2 | 40 | 41 | 0-11 |
| private_key3 | 40 | 41 | 12-31 |
| private_key3 | 42 | 43 | 0-11 |
| private_key4 | 42 | 43 | 12-31 |
| private_key4 | 44 | 45 | 0-11 |
| boot_device_info | 44 | 45 | 12-27 |
| reserved_sw | 44 | 45 | 28-31 |
| reserved_sw | 46 | 47 | 0-3 |
| reserved_odm0 | 46 | 47 | 5-31 |
| reserved_odm0 | 48 | 49 | 0-4 |
| reserved_odm1 | 48 | 49 | 5-31 |
| reserved_odm1 | 50 | 51 | 0-4 |
| reserved_odm2 | 50 | 51 | 5-31 |
| reserved_odm2 | 52 | 53 | 0-4 |
| reserved_odm3 | 52 | 53 | 5-31 |
| reserved_odm3 | 54 | 55 | 0-4 |
| reserved_odm4 | 54 | 55 | 5-31 |
| reserved_odm4 | 56 | 57 | 0-4 |
| reserved_odm5 | 56 | 57 | 5-31 |
| reserved_odm5 | 58 | 59 | 0-4 |
| reserved_odm6 | 58 | 59 | 5-31 |
| reserved_odm6 | 60 | 61 | 0-4 |
| reserved_odm7 | 60 | 61 | 5-31 |
| reserved_odm7 | 62 | 63 | 0-4 |
| kfuse_privkey_ctrl | 64 | 65 | 13-14 |
| package_info | 64 | 65 | 15-18 |
| opt_vendor_code | 64 | 65 | 19-22 |
| opt_fab_code | 64 | 65 | 23-28 |
| opt_lot_code_0 | 64 | 65 | 29-31 |
| opt_lot_code_0 | 66 | 67 | 0-28 |
| opt_lot_code_1 | 66 | 67 | 29-31 |
| opt_lot_code_1 | 68 | 69 | 0-24 |
| opt_wafer_id | 68 | 69 | 25-30 |
| opt_x_coordinate | 68 | 69 | 31 |
| opt_x_coordinate | 70 | 71 | 0-7 |
| opt_y_coordinate | 70 | 71 | 8-16 |
| opt_sec_debug_en | 70 | 71 | 17 |
| opt_ops_reserved | 70 | 71 | 18-23 |
| sata_calib | 70 | 71 | 24-25 |
| opt_priv_sec_en | 90 | 91 | 8 |
| pkc_disable | 90 | 91 | 9 |
| fuse2tsec_debug_disable | 90 | 91 | 10 |
| secure_provision_index | 90 | 91 | 24-27 |
| secure_provision_info | 90 | 91 | 28-29 |
| spare_bit_0 | 100 | None | 16 |
| spare_bit_1 | 100 | None | 17 |
| spare_bit_2 | 100 | None | 18 |
| spare_bit_3 | 100 | None | 19 |
| spare_bit_4 | 100 | None | 20 |
| spare_bit_5 | 100 | None | 21 |
| spare_bit_6 | 100 | None | 22 |
| spare_bit_7 | 100 | None | 23 |
| spare_bit_8 | 100 | None | 24 |
| spare_bit_9 | 100 | None | 25 |
| spare_bit_10 | 100 | None | 26 |
| spare_bit_11 | 100 | None | 27 |
| spare_bit_12 | 100 | None | 28 |
| spare_bit_13 | 100 | None | 29 |
| spare_bit_14 | 100 | None | 30 |
| spare_bit_15 | 100 | None | 31 |
| spare_bit_16 | 101 | None | 16 |
| spare_bit_17 | 101 | None | 17 |
| spare_bit_18 | 101 | None | 18 |
| spare_bit_19 | 101 | None | 19 |
| spare_bit_20 | 101 | None | 20 |
| spare_bit_21 | 101 | None | 21 |
| spare_bit_22 | 101 | None | 22 |
| spare_bit_23 | 101 | None | 23 |
| spare_bit_24 | 101 | None | 24 |
| spare_bit_25 | 101 | None | 25 |
| spare_bit_26 | 101 | None | 26 |
| spare_bit_27 | 101 | None | 27 |
| spare_bit_28 | 101 | None | 28 |
| spare_bit_29 | 101 | None | 29 |
| spare_bit_30 | 101 | None | 30 |
| spare_bit_31 | 101 | None | 31 |
| aid | 103 | None | 2-31 |
| aid | 104 | None | 0-1 |
| reshift_records | 106 | None | 0-192 |
| irom_patch | 112 | None | 0-2560 |
reserved_odm6
Used for anti-downgrade control.
reserved_odm7
Used for anti-downgrade control.
irom_patch
Bootrom patches are burned to the hardware fuse bitmap using a specific format (see ipatch decoder). The bootrom reads these fuses in order to initialize the IPATCH hardware, which allows overriding data returned for code and data fetches done by BPMP.
The following represents the patch data dumped from a Switch console:
RAM:00000000 ; =============== S U B R O U T I N E =======================================
RAM:00000000
RAM:00000000
RAM:00000000 irom_svc_dispatch
RAM:00000000 STMFD SP!, {R0-R2} ; ipatches (new):
RAM:00000000 ; 0: 0x0b57df00 0x001016ae 0x0000df00 : svc #0x00 (offset 0x48)
RAM:00000000 ; 1: 0x1820df22 0x00103040 0x0000df22 : svc #0x22 (offset 0x8c)
RAM:00000000 ; 2: 0x3797df26 0x00106f2e 0x0000df26 : svc #0x26 (offset 0x94)
RAM:00000000 ; 3: 0x3b4d2100 0x0010769a 0x00002100 : movs r1, #0x00
RAM:00000000 ; 4: 0x042bdf2c 0x00100856 0x0000df2c : svc #0x2c (offset 0xa0)
RAM:00000000 ; 5: 0x37aadf42 0x00106f54 0x0000df42 : svc #0x42 (offset 0xcc)
RAM:00000000 ; 6: 0x0972df4b 0x001012e4 0x0000df4b : svc #0x4b (offset 0xde)
RAM:00000000 ; 7: 0x2293df54 0x00104526 0x0000df54 : svc #0x54 (offset 0xf0)
RAM:00000000 ; 8: 0x21fadf5d 0x001043f4 0x0000df5d : svc #0x5d (offset 0x102)
RAM:00000000 ; 9: 0xbba2ac57 0x00117744 0x0000ac57 : data
RAM:00000000 ; 10: 0xbbac3d19 0x00117758 0x00003d19 : data
RAM:00000000 ; 11: 0x1e952001 0x00103d2a 0x00002001 : movs r0, #0x01
RAM:00000000 ;
RAM:00000000 ; ipatches (old):
RAM:00000000 ; 0: 0x0b57df00 0x001016ae 0x0000df00 : svc #0x00 (offset 0x48)
RAM:00000000 ; 1: 0x1820df22 0x00103040 0x0000df22 : svc #0x22 (offset 0x8c)
RAM:00000000 ; 2: 0x3797df26 0x00106f2e 0x0000df26 : svc #0x26 (offset 0x94)
RAM:00000000 ; 3: 0x7d9e2000 0x0010fb3c 0x00002000 : movs r0, #0x00
RAM:00000000 ; 4: 0x042bdf2c 0x00100856 0x0000df2c : svc #0x2c (offset 0xa0)
RAM:00000000 ; 5: 0x37aadf42 0x00106f54 0x0000df42 : svc #0x42 (offset 0xcc)
RAM:00000000 ; 6: 0x0972df4b 0x001012e4 0x0000df4b : svc #0x4b (offset 0xde)
RAM:00000000 ; 7: 0x2293df54 0x00104526 0x0000df54 : svc #0x54 (offset 0xf0)
RAM:00000000 ; 8: 0x21fadf5d 0x001043f4 0x0000df5d : svc #0x5d (offset 0x102)
RAM:00000000 ; 9: 0xbba2ac57 0x00117744 0x0000ac57 : data
RAM:00000000 ; 10: 0xbbac3d19 0x00117758 0x00003d19 : data
RAM:00000000 ; 11: 0x1e952001 0x00103d2a 0x00002001 : movs r0, #0x01
RAM:00000004 MOV R2, LR
RAM:00000008 SUB R2, R2, #2
RAM:0000000C LDR R2, [R2]
RAM:00000010 AND R2, R2, #0xFF
RAM:00000014 MOV R2, R2,LSL#1
RAM:00000018 LDR R0, =0x1007B0
RAM:0000001C LDR R1, =0x1007F8
RAM:00000020 SUB R1, R1, R0
RAM:00000024 LDR R0, =0x40004C30
RAM:00000028 ADD R0, R0, R1
RAM:0000002C ADD R2, R2, R0
RAM:00000030 ORR R2, R2, #1
RAM:00000034 LDMFD SP!, {R0,R1}
RAM:00000038 BX R2
RAM:00000038 ; End of function irom_svc_dispatch
RAM:00000038
RAM:00000038 ; ---------------------------------------------------------------------------
RAM:0000003C dword_3C DCD 0x1007B0 ; DATA XREF: irom_svc_dispatch+18↑r
RAM:00000040 dword_40 DCD 0x1007F8 ; DATA XREF: irom_svc_dispatch+1C↑r
RAM:00000044 dword_44 DCD 0x40004C30 ; DATA XREF: irom_svc_dispatch+24↑r
RAM:00000048 CODE16
RAM:00000048
RAM:00000048 ; =============== S U B R O U T I N E =======================================
RAM:00000048
RAM:00000048
RAM:00000048 sub_48
RAM:00000048 MOVS R2, #0 ; 0: 0x0b57df00 0x001016ae 0x0000df00 : svc #0x00 (offset 0x48)
RAM:0000004A MVNS R2, R2
RAM:0000004C LDR R1, =0x60006410
RAM:0000004E STR R2, [R1,#0x30]
RAM:00000050 STR R2, [R1,#0x38]
RAM:00000052 LDR R1, =0x600060F8
RAM:00000054 STR R2, [R1]
RAM:00000056 STR R2, [R1,#4]
RAM:00000058 LDR R1, =0x60006284
RAM:0000005A STR R2, [R1]
RAM:0000005C STR R2, [R1,#0x18]
RAM:0000005E ADDS R1, #0x80
RAM:00000060 ADDS R1, #0x1C
RAM:00000062 STR R2, [R1]
RAM:00000064 STR R2, [R1,#8]
RAM:00000066 STR R2, [R1,#0x10]
RAM:00000068 ADDS R1, #0x80
RAM:0000006A STR R2, [R1]
RAM:0000006C STR R2, [R1,#4]
RAM:0000006E LDR R1, =0x60006554
RAM:00000070 STR R2, [R1]
RAM:00000072 MOVS R2, #0xA0000000
RAM:00000076 LDR R1, =0x60006148
RAM:00000078 STR R2, [R1]
RAM:0000007A ADDS R1, #0x38 ; '8'
RAM:0000007C STR R2, [R1]
RAM:0000007E MOVS R2, #0xE0000000
RAM:00000082 LDR R1, =0x600066A0
RAM:00000084 STR R2, [R1]
RAM:00000086 MOVS R1, #0
RAM:00000088 MOVS R0, #0xE
RAM:0000008A B pop_r2_mov_pc_lr
RAM:0000008A ; End of function sub_48
RAM:0000008A
RAM:0000008C
RAM:0000008C ; =============== S U B R O U T I N E =======================================
RAM:0000008C
RAM:0000008C
RAM:0000008C sub_8C
RAM:0000008C LDR R0, [R1,#0x18] ; 1: 0x1820df22 0x00103040 0x0000df22 : svc #0x22 (offset 0x8c)
RAM:0000008E MOVS R2, #1
RAM:00000090 ORRS R0, R2
RAM:00000092 B pop_r2_mov_pc_lr
RAM:00000092 ; End of function sub_8C
RAM:00000092
RAM:00000094
RAM:00000094 ; =============== S U B R O U T I N E =======================================
RAM:00000094
RAM:00000094
RAM:00000094 sub_94
RAM:00000094 LDR R2, [R4,#0x50] ; 2: 0x3797df26 0x00106f2e 0x0000df26 : svc #0x26 (offset 0x94)
RAM:00000096 ADDS R2, R2, #2
RAM:00000098 STR R2, [R4,#0x50]
RAM:0000009A SUBS R1, #0x80
RAM:0000009C STR R1, [R4,#0x34]
RAM:0000009E B pop_r2_mov_pc_lr
RAM:0000009E ; End of function sub_94
RAM:0000009E
RAM:000000A0
RAM:000000A0 ; =============== S U B R O U T I N E =======================================
RAM:000000A0
RAM:000000A0
RAM:000000A0 sub_A0
RAM:000000A0
RAM:000000A0 ; FUNCTION CHUNK AT RAM:00000148 SIZE 00000004 BYTES
RAM:000000A0
RAM:000000A0 MOVS R0, #0x70000000 ; 4: 0x042bdf2c 0x00100856 0x0000df2c : svc #0x2c (offset 0xa0)
RAM:000000A4 LDR R6, =dword_7000EF14
RAM:000000A6 LDR R2, =dword_7000E5B4
RAM:000000A8 LDR R2, [R2]
RAM:000000AA CMP R2, #0
RAM:000000AC BEQ loc_B4
RAM:000000AE LDR R2, [R6]
RAM:000000B0 STR R2, [R0,#8]
RAM:000000B2 B loc_BC
RAM:000000B4 ; ---------------------------------------------------------------------------
RAM:000000B4
RAM:000000B4 loc_B4 ; CODE XREF: sub_A0+C↑j
RAM:000000B4 LDR R2, [R0,#8]
RAM:000000B6 LSRS R0, R0, #0x12
RAM:000000B8 ORRS R2, R0
RAM:000000BA STR R2, [R6]
RAM:000000BC
RAM:000000BC loc_BC ; CODE XREF: sub_A0+12↑j
RAM:000000BC LDR R6, =dword_7000E9C0
RAM:000000BE LDR R0, [R6]
RAM:000000C0 MOVS R2, #0x4000
RAM:000000C4 ORRS R2, R0
RAM:000000C6 STR R2, [R6]
RAM:000000C8 LDR R0, [R5,#0x10]
RAM:000000CA B pop_r2_mov_pc_lr
RAM:000000CA ; End of function sub_A0
RAM:000000CA
RAM:000000CC
RAM:000000CC ; =============== S U B R O U T I N E =======================================
RAM:000000CC
RAM:000000CC
RAM:000000CC sub_CC
RAM:000000CC MOVS R2, #0xF000000 ; 5: 0x37aadf42 0x00106f54 0x0000df42 : svc #0x42 (offset 0xcc)
RAM:000000D0 BICS R1, R2
RAM:000000D2 STR R1, [R4,#0x10]
RAM:000000D4 LDR R1, [R4,#0x50]
RAM:000000D6 MOVS R2, #7
RAM:000000D8 BICS R1, R2
RAM:000000DA STR R1, [R4,#0x50]
RAM:000000DC B pop_r2_mov_pc_lr
RAM:000000DC ; End of function sub_CC
RAM:000000DC
RAM:000000DE
RAM:000000DE ; =============== S U B R O U T I N E =======================================
RAM:000000DE
RAM:000000DE
RAM:000000DE sub_DE
RAM:000000DE LDR R2, =dword_7000FA9C ; 6: 0x0972df4b 0x001012e4 0x0000df4b : svc #0x4b (offset 0xde)
RAM:000000E0 LDR R2, [R2]
RAM:000000E2 LSRS R2, R2, #8
RAM:000000E4 LSLS R2, R2, #1
RAM:000000E6 LDR R1, [R4]
RAM:000000E8 BICS R1, R2
RAM:000000EA STR R1, [R4]
RAM:000000EC CMP R0, #0
RAM:000000EE B pop_r2_mov_pc_lr
RAM:000000EE ; End of function sub_DE
RAM:000000EE
RAM:000000F0
RAM:000000F0 ; =============== S U B R O U T I N E =======================================
RAM:000000F0
RAM:000000F0
RAM:000000F0 sub_F0
RAM:000000F0
RAM:000000F0 arg_0= 0
RAM:000000F0
RAM:000000F0 LDR R0, =0x400049F0 ; 7: 0x2293df54 0x00104526 0x0000df54 : svc #0x54 (offset 0xf0)
RAM:000000F2 LDR R2, [R0]
RAM:000000F4 STR R2, [SP,#arg_0]
RAM:000000F6 LDR R0, =0x40010000
RAM:000000F8 LSRS R2, R2, #17
RAM:000000FA BEQ pop_r2_mov_pc_lr ; if ([0x400049F0] >> 17) == 0) {
RAM:000000FA ; r2 = [0x400049F0];
RAM:000000FA ; } else {
RAM:000000FC LDR R0, =APBDEV_PMC_CNTRL_0
RAM:000000FE STR R4, [R0] ; write APBDEV_PMC_CNTRL
RAM:00000100
RAM:00000100 loc_100 ; CODE XREF: sub_F0:loc_100↓j
RAM:00000100 B loc_100 ; hang
RAM:00000100 ; End of function sub_F0 ; }
RAM:00000100
RAM:00000102
RAM:00000102 ; =============== S U B R O U T I N E =======================================
RAM:00000102
RAM:00000102
RAM:00000102 sub_102
RAM:00000102
RAM:00000102 arg_0= 0
RAM:00000102
RAM:00000102 LDR R2, =0x40010220 ; 8: 0x21fadf5d 0x001043f4 0x0000df5d : svc #0x5d (offset 0x102)
RAM:00000104 STR R2, [SP,#arg_0] ; set r2 retval = [0x40010220]
RAM:00000106 LDR R2, [R2,#0x18]
RAM:00000108 ADDS R0, #0xFC
RAM:0000010A STR R2, [R0,#0x1C] ; [r0+0x118] = [0x40010220 + 0x18]
RAM:0000010C B pop_r2_mov_pc_lr
RAM:0000010C ; End of function sub_102
RAM:0000010C
RAM:0000010C ; ---------------------------------------------------------------------------
RAM:0000010E DCB 0
RAM:0000010F DCB 0
RAM:00000110 off_110 DCD 0x60006410 ; DATA XREF: sub_48+4↑r
RAM:00000114 off_114 DCD 0x600060F8 ; DATA XREF: sub_48+A↑r
RAM:00000118 off_118 DCD 0x60006284 ; DATA XREF: sub_48+10↑r
RAM:0000011C off_11C DCD 0x60006554 ; DATA XREF: sub_48+26↑r
RAM:00000120 off_120 DCD 0x60006148 ; DATA XREF: sub_48+2E↑r
RAM:00000124 off_124 DCD 0x600066A0 ; DATA XREF: sub_48+3A↑r
RAM:00000128 off_128 DCD dword_7000EF14 ; DATA XREF: sub_A0+4↑r
RAM:0000012C off_12C DCD dword_7000E5B4 ; DATA XREF: sub_A0+6↑r
RAM:00000130 off_130 DCD dword_7000E9C0 ; DATA XREF: sub_A0:loc_BC↑r
RAM:00000134 off_134 DCD dword_7000FA9C ; DATA XREF: sub_DE↑r
RAM:00000138 off_138 DCD 0x400049F0 ; DATA XREF: sub_F0↑r
RAM:0000013C dword_13C DCD 0x40010000 ; DATA XREF: sub_F0+6↑r
RAM:00000140 off_140 DCD APBDEV_PMC_CNTRL_0 ; DATA XREF: sub_F0+C↑r
RAM:00000144 off_144 DCD 0x40010220 ; DATA XREF: sub_102↑r
RAM:00000148 ; ---------------------------------------------------------------------------
RAM:00000148 ; START OF FUNCTION CHUNK FOR sub_A0
RAM:00000148
RAM:00000148 pop_r2_mov_pc_lr ; CODE XREF: sub_48+42↑j
RAM:00000148 ; sub_8C+6↑j ...
RAM:00000148 POP {R2}
RAM:0000014A MOV PC, LR
RAM:0000014A ; END OF FUNCTION CHUNK FOR sub_A0The last 4 patches are exclusive to the Switch, while the remaining ones are often included in most Tegra210 based devices.
IROM patch 0
This patch configures clock enables and clock gate overrides for new hardware.
u32 CLK_ENB_H_SET = 0x60006328;
u32 CLK_ENB_L_SET = 0x60006320;
u32 CLK_ENB_U_SET = 0x60006330;
u32 CLK_ENB_V_SET = 0x60006440;
u32 CLK_ENB_W_SET = 0x60006448;
u32 CLK_ENB_X_SET = 0x60006284;
u32 CLK_ENB_Y_SET = 0x6000629C;
u32 LVL2_CLK_GATE_OVRA = 0x600060F8;
u32 LVL2_CLK_GATE_OVRB = 0x600060FC;
u32 LVL2_CLK_GATE_OVRC = 0x600063A0;
u32 LVL2_CLK_GATE_OVRD = 0x600063A4;
u32 LVL2_CLK_GATE_OVRE = 0x60006554;
u32 CLK_SOURCE_VI = 0x60006148;
u32 CLK_SOURCE_HOST1X = 0x60006180;
u32 CLK_SOURCE_NVENC = 0x600066A0;
// Set all clock enables and overrides
*(u32 *)CLK_ENB_V_SET = 0xFFFFFFFF;
*(u32 *)CLK_ENB_W_SET = 0xFFFFFFFF;
*(u32 *)LVL2_CLK_GATE_OVRA = 0xFFFFFFFF;
*(u32 *)LVL2_CLK_GATE_OVRB = 0xFFFFFFFF;
*(u32 *)CLK_ENB_X_SET = 0xFFFFFFFF;
*(u32 *)CLK_ENB_Y_SET = 0xFFFFFFFF;
*(u32 *)CLK_ENB_L_SET = 0xFFFFFFFF;
*(u32 *)CLK_ENB_H_SET = 0xFFFFFFFF;
*(u32 *)CLK_ENB_U_SET = 0xFFFFFFFF;
*(u32 *)LVL2_CLK_GATE_OVRC = 0xFFFFFFFF;
*(u32 *)LVL2_CLK_GATE_OVRD = 0xFFFFFFFF;
*(u32 *)LVL2_CLK_GATE_OVRE = 0xFFFFFFFF;
// Set VI, HOST1X and NVENC clock sources to CLK_M
*(u32 *)CLK_SOURCE_VI = 0xA0000000;
*(u32 *)CLK_SOURCE_HOST1X = 0xA0000000;
*(u32 *)CLK_SOURCE_NVENC = 0xE0000000;
/*
Untranslated instructions:
MOVS R1, #0
MOVS R0, #0xE
*/
return;IROM patch 1
This patch is a bugfix.
LP0 resume code expects APBDEV_PMC_SCRATCH190_0 to be set to 0x01, but the bootrom didn't set it.
u32 APBDEV_PMC_SCRATCH190_0 = 0x7000EC18;
u32 pmc_scratch190_val = *(u32 *)APBDEV_PMC_SCRATCH190_0;
return (pmc_scratch190_val | 0x01);IROM patch 2
This patch adjusts USB configurations.
u32 USB1_UTMIP_SPARE_CFG0_0 = 0x7D000834;
u32 USB1_UTMIP_BIAS_CFG2_0 = 0x7D000850;
// Increase UTMIP_HSSQUELCH_LEVEL_NEW by 0x02
*(u32 *)USB1_UTMIP_BIAS_CFG2_0 += 0x02;
// Clear FUSE_HS_IREF_CAP_CFG
*(u32 *)USB1_UTMIP_SPARE_CFG0_0 = ((*(u32 *)USB1_UTMIP_SPARE_CFG0_0 & ~(0x118)) - 0x80);
return;IROM patch 3
This patch ensures that waiting on PRC_PENDING from the XUSB_DEV register T_XUSB_DEV_XHCI_PORTSC never fails.
In the second batch of patched units (FUSE_OPT_FT_REV set to revision 7.0) this patch has been replaced with a fix for CVE-2018-6242 (arbitrary copy when handling USB control requests in RCM). By setting R1 to 0 at address 0x0010769A in the bootrom, the upper 16 bits of the USB control request's wLength field are cleared out, effectively limiting the request's size to a maximum of 255 bytes.
IROM patch 4
This patch allows backing up and restoring strapping options for warmboot.
u32 APBDEV_PMC_SCRATCH0_0 = 0x7000E450;
u32 APBDEV_PMC_RST_STATUS_0 = 0x7000E5B4;
u32 APBDEV_PMC_SEC_DISABLE8_0 = 0x7000E9C0;
u32 APBDEV_PMC_SECURE_SCRATCH111_0 = 0x7000EF14;
u32 APB_MISC_PP_STRAPPING_OPT_A_0 = 0x70000008;
u32 reset_status = *(u32 *)APBDEV_PMC_RST_STATUS_0;
// Check for regular power on
if (reset_status == 0)
{
// Set all buttons in RCM_STRAPS and backup to PMC scratch
*(u32 *)APBDEV_PMC_SECURE_SCRATCH111_0 = (*(u32 *)APB_MISC_PP_STRAPPING_OPT_A_0 | 0x1C00);
}
else
{
// Restore strapping options from PMC scratch
*(u32 *)APB_MISC_PP_STRAPPING_OPT_A_0 = *(u32 *)APBDEV_PMC_SECURE_SCRATCH111_0;
}
// Disable write access to APBDEV_PMC_SECURE_SCRATCH111_0
*(u32 *)APBDEV_PMC_SEC_DISABLE8_0 |= 0x4000;
return *(u32 *)APBDEV_PMC_SCRATCH0_0;IROM patch 5
This patch adjusts USB configurations.
u32 USB1_UTMIP_HSRX_CFG0_0 = 0x7D000810;
u32 USB1_UTMIP_BIAS_CFG2_0 = 0x7D000850;
// Clear UTMIP_IDLE_WAIT, UTMIP_ELASTIC_LIMIT and UTMIP_PCOUNT_UPDN_DIV,
// and set UTMIP_IDLE_WAIT to 0x11 and UTMIP_ELASTIC_LIMIT to 0x10
*(u32 *)USB1_UTMIP_HSRX_CFG0_0 = ((*(u32 *)USB1_UTMIP_HSRX_CFG0_0 & ~(0xF8000) + 0x88000 & ~(0x7C00) + 0x4000) & ~(0xF000000));
// Clear UTMIP_HSSQUELCH_LEVEL_NEW
*(u32 *)USB1_UTMIP_BIAS_CFG2_0 &= ~(0x07);
return;IROM patch 6
This patch is a factory backdoor.
It allows controlling the debug authentication configuration using a fuse.
u32 FUSE_ODM_INFO = 0x7000FA9C;
u32 odm_info = *(u32 *)FUSE_ODM_INFO;
debug_auth_override_val = ((odm_info >> 0x08) << 0x01);
// Override debug authentication value stored in IRAM
*(u32 *)0x400028E4 &= ~(debug_auth_override_val);
/*
Untranslated instructions:
CMP R0, #0
*/
return;IROM patch 7
This patch is a bugfix.
It prevents overflowing IRAM (0x40010000) when copying the warmboot binary from DRAM.
u32 APBDEV_PMC_CNTRL_0 = 0x7000E400;
u32 warmboot_header_addr = 0x400049F0;
u32 warmboot_bin_size = *(u32 *)warmboot_bin_header_addr;
// Invalid warmboot binary size
if (warmboot_size >> 0x11)
{
// Assert MAIN_RST
// 0x40004BF0 comes from R4 and the bootrom doesn't bother to change it
*(u32 *)APBDEV_PMC_CNTRL_0 = 0x40004BF0;
// Deadlock
while(1);
}
/*
Untranslated instructions:
LDR R0, =0x40010000
LDR R2, [warmboot_bin_header_addr]
*/
return;IROM patch 8
This patch is a bugfix.
It sets the correct warmboot binary entrypoint address for RSA signature verification, which would be done in DRAM instead of IRAM without this patch.
u32 warmboot_addr_ptr = 0x40010238;
u32 warmboot_entry_addr_ptr = 0x40004C28;
*(u32 *)warmboot_entry_addr_ptr = *(u32 *)warmboot_addr_ptr;
/*
Untranslated instructions:
LDR R2, [warmboot_addr_ptr]
*/
return;IROM patches 9 and 10
These patches modify the 256-bit Secure Provisioning AES key with index 0x3A.
IROM patch 11
This patch forces the value of SE_TZRAM_SECURITY to be 0x01 instead of restoring it from the saved SE context.
Mariko
| Name | Number | Redundant number | Bits |
|---|---|---|---|
| enable_fuse_program | 0 | 1 | 0 |
| disable_fuse_program | 0 | 1 | 1 |
| bypass_fuses | 0 | 1 | 2 |
| jtag_direct_access_disable | 0 | 1 | 3 |
| production_mode | 0 | 1 | 4 |
| jtag_secureid_valid | 0 | 1 | 5 |
| odm_lock | 0 | 1 | 6-21 |
| fa_mode | 0 | 1 | 22 |
| security_mode | 0 | 1 | 23 |
| arm_debug_dis | 0 | 1 | 24 |
| obs_dis | 0 | 1 | 25 |
| public_key0 | 64 | 65 | 15-31 |
| public_key0 | 66 | 67 | 0-14 |
| public_key1 | 66 | 67 | 15-31 |
| public_key1 | 68 | 69 | 0-14 |
| public_key2 | 68 | 69 | 15-31 |
| public_key2 | 70 | 71 | 0-14 |
| public_key3 | 70 | 71 | 15-31 |
| public_key3 | 72 | 73 | 0-14 |
| public_key4 | 72 | 73 | 15-31 |
| public_key4 | 74 | 75 | 0-14 |
| public_key5 | 74 | 75 | 15-31 |
| public_key5 | 76 | 77 | 0-14 |
| public_key6 | 76 | 77 | 15-31 |
| public_key6 | 78 | 79 | 0-14 |
| public_key7 | 78 | 79 | 15-31 |
| public_key7 | 80 | 81 | 0-14 |
| private_key0 | 86 | 87 | 30-31 |
| private_key0 | 88 | 89 | 0-29 |
| private_key1 | 88 | 89 | 30-31 |
| private_key1 | 90 | 91 | 0-29 |
| private_key2 | 90 | 91 | 30-31 |
| private_key2 | 92 | 93 | 0-29 |
| private_key3 | 92 | 93 | 30-31 |
| private_key3 | 94 | 95 | 0-29 |
| private_key4 | 94 | 95 | 30-31 |
| private_key4 | 96 | 97 | 0-29 |
| boot_device_info | 96 | 97 | 30-31 |
| boot_device_info | 98 | 99 | 0-13 |
| reserved_sw | 98 | 99 | 14-25 |
| secure_provision_index | 152 | 153 | 23-26 |
| secure_provision_info | 152 | 153 | 27-28 |
| aid | 165 | None | 2-31 |
| aid | 166 | None | 0-1 |
| spare_bit_0 | 167 | None | 2 |
| spare_bit_1 | 167 | None | 3 |
| spare_bit_2 | 167 | None | 4 |
| spare_bit_3 | 167 | None | 5 |
| spare_bit_4 | 167 | None | 6 |
| spare_bit_5 | 167 | None | 7 |
| spare_bit_6 | 167 | None | 8 |
| spare_bit_7 | 167 | None | 9 |
| spare_bit_8 | 167 | None | 10 |
| spare_bit_9 | 167 | None | 11 |
| spare_bit_10 | 167 | None | 12 |
| spare_bit_11 | 167 | None | 13 |
| spare_bit_12 | 167 | None | 14 |
| spare_bit_13 | 167 | None | 15 |
| spare_bit_14 | 167 | None | 16 |
| spare_bit_15 | 167 | None | 17 |
| spare_bit_16 | 167 | None | 18 |
| spare_bit_17 | 167 | None | 19 |
| spare_bit_18 | 167 | None | 20 |
| spare_bit_19 | 167 | None | 21 |
| spare_bit_20 | 167 | None | 22 |
| spare_bit_21 | 167 | None | 23 |
| spare_bit_22 | 167 | None | 24 |
| spare_bit_23 | 167 | None | 25 |
| spare_bit_24 | 167 | None | 26 |
| spare_bit_25 | 167 | None | 27 |
| spare_bit_26 | 167 | None | 28 |
| spare_bit_27 | 167 | None | 29 |
| spare_bit_28 | 167 | None | 30 |
| spare_bit_29 | 167 | None | 31 |
| reshift_records | 170 | None | 0-192 |
| irom_patch | 176 | None | 0-2560 |
irom_patch
RAM:00000000 ; =============== S U B R O U T I N E =======================================
RAM:00000000
RAM:00000000
RAM:00000000 irom_svc_dispatch
RAM:00000000 STMFD SP!, {R0-R2} ; ipatches:
RAM:00000000 ; 0: 0x085bdf00 0x001010b6 0x0000df00 : svc #0x00 (offset 0x48)
RAM:00000000 ;
RAM:00000000 ; 0: 0x12d3df06 0x001025a6 0x0000df06 : svc #0x06 (offset 0x54)
RAM:00000000 ; 1: 0x28144770 0x00105028 0x00004770 : bx lr
RAM:00000000 ; 2: 0x0fb72001 0x00101f6e 0x00002001 : movs r0, #0x01
RAM:00000000 ; 3: 0x692ddf15 0x0010d25a 0x0000df15 : svc #0x15 (offset 0x72)
RAM:00000000 ; 4: 0x436ddf1f 0x001086da 0x0000df1f : svc #0x1f (offset 0x86)
RAM:00000000 ; 5: 0x4376df23 0x001086ec 0x0000df23 : svc #0x23 (offset 0x8e)
RAM:00000000 ; 6: 0x4103df2b 0x00108206 0x0000df2b : svc #0x2b (offset 0x9e)
RAM:00000000 ; 7: 0x495c0060 0x001092b8 0x00000060 : lsls r0, r4, #1
RAM:00000000 ; 8: 0x62e3ef5b 0x0010c5c6 0x0000ef5b
RAM:00000000 ; 9: 0x10d1df6a 0x001021a2 0x0000df6a : svc #0x6a (offset 0x11c)
RAM:00000004 MOV R2, LR
RAM:00000008 SUB R2, R2, #2
RAM:0000000C LDR R2, [R2]
RAM:00000010 AND R2, R2, #0xFF
RAM:00000014 MOV R2, R2,LSL#1
RAM:00000018 LDR R0, =0x10022C
RAM:0000001C LDR R1, =0x100174
RAM:00000020 SUB R1, R1, R0
RAM:00000024 LDR R0, =0x40004164
RAM:00000028 ADD R0, R0, R1
RAM:0000002C ADD R2, R2, R0
RAM:00000030 ORR R2, R2, #1
RAM:00000034 LDMFD SP!, {R0,R1}
RAM:00000038 BX R2
RAM:00000038 ; End of function irom_svc_dispatch
RAM:00000038
RAM:00000038 ; ---------------------------------------------------------------------------
RAM:0000003C dword_3C DCD 0x10022C ; DATA XREF: irom_svc_dispatch+18↑r
RAM:00000040 dword_40 DCD 0x100174 ; DATA XREF: irom_svc_dispatch+1C↑r
RAM:00000044 dword_44 DCD 0x40004164 ; DATA XREF: irom_svc_dispatch+24↑r
RAM:00000048 CODE16
RAM:00000048
RAM:00000048 ; =============== S U B R O U T I N E =======================================
RAM:00000048
RAM:00000048
RAM:00000048 sub_48 ; 0: 0x085bdf00 0x001010b6 0x0000df00 : svc #0x00 (offset 0x48)
RAM:00000048 CMP R5, #0xAF
RAM:0000004A BNE loc_4E
RAM:0000004C MOVS R5, #0xFF
RAM:0000004E
RAM:0000004E loc_4E ; CODE XREF: sub_48+2↑j
RAM:0000004E SUBS R6, R5, #1
RAM:00000050
RAM:00000050 loc_50 ; CODE XREF: sub_54+18↓j
RAM:00000050 ; sub_72+12↓j ...
RAM:00000050 POP {R2}
RAM:00000052 MOV PC, LR
RAM:00000052 ; End of function sub_48
RAM:00000052
RAM:00000054
RAM:00000054 ; =============== S U B R O U T I N E =======================================
RAM:00000054
RAM:00000054
RAM:00000054 sub_54 ; 0: 0x12d3df06 0x001025a6 0x0000df06 : svc #0x06 (offset 0x54)
RAM:00000054 MOVS R3, #7
RAM:00000056
RAM:00000056 loc_56 ; CODE XREF: sub_72+10↓j
RAM:00000056 ; sub_8E+E↓j
RAM:00000056 PUSH {R0,R1,R3-R6}
RAM:00000058 LDR R0, =0x4000FC20
RAM:0000005A LDR R1, =0x40040000
RAM:0000005C LDR R3, =0xEAFFFFFE
RAM:0000005E MOVS R4, R3
RAM:00000060 MOVS R5, R3
RAM:00000062 ADDS R6, R3, #0
RAM:00000064
RAM:00000064 loc_64 ; CODE XREF: sub_54+14↓j
RAM:00000064 STMIA R0!, {R3-R6}
RAM:00000066 CMP R0, R1
RAM:00000068 BCC loc_64
RAM:0000006A POP {R0,R1,R3-R6}
RAM:0000006C B loc_50
RAM:0000006C ; End of function sub_54
RAM:0000006C
RAM:0000006E ; ---------------------------------------------------------------------------
RAM:0000006E ; START OF FUNCTION CHUNK FOR sub_8E
RAM:0000006E
RAM:0000006E loc_6E ; CODE XREF: sub_8E+8↓j
RAM:0000006E LDR R0, =0x1002A0
RAM:00000070 BX R0
RAM:00000070 ; END OF FUNCTION CHUNK FOR sub_8E
RAM:00000072
RAM:00000072 ; =============== S U B R O U T I N E =======================================
RAM:00000072
RAM:00000072
RAM:00000072 sub_72 ; 3: 0x692ddf15 0x0010d25a 0x0000df15 : svc #0x15 (offset 0x72)
RAM:00000072 MOVS R2, #2
RAM:00000074 CMP R0, #0x26 ; '&'
RAM:00000076 BLS loc_7A
RAM:00000078 ADDS R2, #0x50 ; 'P'
RAM:0000007A
RAM:0000007A loc_7A ; CODE XREF: sub_72+4↑j
RAM:0000007A MOV R3, LR
RAM:0000007C ADDS R3, R3, R2
RAM:0000007E MOV LR, R3
RAM:00000080 CMP R0, #0
RAM:00000082 BNE loc_56
RAM:00000084 B loc_50
RAM:00000084 ; End of function sub_72
RAM:00000084
RAM:00000086
RAM:00000086 ; =============== S U B R O U T I N E =======================================
RAM:00000086
RAM:00000086
RAM:00000086 sub_86 ; 4: 0x436ddf1f 0x001086da 0x0000df1f : svc #0x1f (offset 0x86)
RAM:00000086
RAM:00000086 arg_8 = 8
RAM:00000086
RAM:00000086 MOVS R3, R0
RAM:00000088 LDR R2, =0x5A55F0E1
RAM:0000008A STR R2, [SP,#arg_8]
RAM:0000008C B loc_50
RAM:0000008C ; End of function sub_86
RAM:0000008C
RAM:0000008E
RAM:0000008E ; =============== S U B R O U T I N E =======================================
RAM:0000008E
RAM:0000008E
RAM:0000008E sub_8E ; 5: 0x4376df23 0x001086ec 0x0000df23 : svc #0x23 (offset 0x8e)
RAM:0000008E
RAM:0000008E arg_8 = 8
RAM:0000008E
RAM:0000008E ; FUNCTION CHUNK AT RAM:0000006E SIZE 00000004 BYTES
RAM:0000008E
RAM:0000008E MOVS R3, R0
RAM:00000090 LDR R2, =0x5A55F0E1
RAM:00000092 LDR R0, [SP,#arg_8]
RAM:00000094 CMP R0, R2
RAM:00000096 BEQ loc_6E
RAM:00000098 CMP R0, #0
RAM:0000009A BEQ loc_50
RAM:0000009C B loc_56
RAM:0000009C ; End of function sub_8E
RAM:0000009C
RAM:0000009E
RAM:0000009E ; =============== S U B R O U T I N E =======================================
RAM:0000009E
RAM:0000009E
RAM:0000009E sub_9E ; 6: 0x4103df2b 0x00108206 0x0000df2b : svc #0x2b (offset 0x9e)
RAM:0000009E LDR R0, =0x7000F900
RAM:000000A0 SUBS R0, #0xD8
RAM:000000A2 MOVS R2, #1
RAM:000000A4 STR R2, [R0]
RAM:000000A6 LDR R0, =0x7001231C
RAM:000000A8 LDR R3, =0x7041231C
RAM:000000AA MOVS R1, #0xE0
RAM:000000AC B loc_B4
RAM:000000AE ; ---------------------------------------------------------------------------
RAM:000000AE
RAM:000000AE loc_AE ; CODE XREF: sub_9E+2E↓j
RAM:000000AE MOVS R1, #0xF0
RAM:000000B0 B loc_B4
RAM:000000B2 ; ---------------------------------------------------------------------------
RAM:000000B2
RAM:000000B2 loc_B2 ; CODE XREF: sub_9E+32↓j
RAM:000000B2 MOVS R1, #0xC0
RAM:000000B4
RAM:000000B4 loc_B4 ; CODE XREF: sub_9E+E↑j
RAM:000000B4 ; sub_9E+12↑j
RAM:000000B4 MOVS R4, #0
RAM:000000B6
RAM:000000B6 loc_B6 ; CODE XREF: sub_9E+28↓j
RAM:000000B6 MOVS R2, #0
RAM:000000B8 STR R1, [R0]
RAM:000000BA STR R2, [R0,#4]
RAM:000000BC STR R1, [R3]
RAM:000000BE STR R2, [R3,#4]
RAM:000000C0 ADDS R1, #1
RAM:000000C2 ADDS R4, #1
RAM:000000C4 CMP R4, #7
RAM:000000C6 BLS loc_B6
RAM:000000C8 LSRS R1, R1, #4
RAM:000000CA CMP R1, #0xE
RAM:000000CC BEQ loc_AE
RAM:000000CE CMP R1, #0xF
RAM:000000D0 BEQ loc_B2
RAM:000000D2 MOV R5, LR
RAM:000000D4 MOVS R0, #0
RAM:000000D6
RAM:000000D6 loc_D6 ; CODE XREF: sub_9E+56↓j
RAM:000000D6 MOVS R1, #0xD
RAM:000000D8 MOVS R2, #0
RAM:000000DA MOVS R3, #0xD
RAM:000000DC PUSH {R0-R3}
RAM:000000DE LDR R4, =0x40004164
RAM:000000E0 PUSH {R2,R4}
RAM:000000E2 ADRL R4, (loc_EC+1)
RAM:000000E6 MOV LR, R4
RAM:000000E8 LDR R4, =0x105A19
RAM:000000EA BX R4
RAM:000000EC
RAM:000000EC loc_EC ; DATA XREF: sub_9E+44↑o
RAM:000000EC ADD SP, SP, #8
RAM:000000EE POP {R0-R3}
RAM:000000F0 ADDS R0, #1
RAM:000000F2 CMP R0, #1
RAM:000000F4 BEQ loc_D6
RAM:000000F6 MOV LR, R5
RAM:000000F8 LDR R0, =0x4000FC20
RAM:000000FA MOV R8, R0
RAM:000000FC B loc_50
RAM:000000FC ; End of function sub_9E
RAM:000000FC
RAM:000000FE
RAM:000000FE ; =============== S U B R O U T I N E =======================================
RAM:000000FE
RAM:000000FE
RAM:000000FE sub_FE
RAM:000000FE POP {R2}
RAM:00000100 MOV R4, SP
RAM:00000102 SUBS R4, R4, R0
RAM:00000104 BLS loc_10C
RAM:00000106 CMP R4, R2
RAM:00000108 BCS loc_118
RAM:0000010A B loc_116
RAM:0000010C ; ---------------------------------------------------------------------------
RAM:0000010C
RAM:0000010C loc_10C ; CODE XREF: sub_FE+6↑j
RAM:0000010C LDR R4, =0x4000BE68
RAM:0000010E SUBS R4, R4, R0
RAM:00000110 BLS loc_118
RAM:00000112 CMP R4, R2
RAM:00000114 BCS loc_118
RAM:00000116
RAM:00000116 loc_116 ; CODE XREF: sub_FE+C↑j
RAM:00000116 ADDS R2, R4, #0
RAM:00000118
RAM:00000118 loc_118 ; CODE XREF: sub_FE+A↑j
RAM:00000118 ; sub_FE+12↑j ...
RAM:00000118 SUBS R3, R0, R1
RAM:0000011A BX LR
RAM:0000011A ; End of function sub_FE
RAM:0000011A
RAM:0000011C
RAM:0000011C ; =============== S U B R O U T I N E =======================================
RAM:0000011C
RAM:0000011C
RAM:0000011C sub_11C ; 9: 0x10d1df6a 0x001021a2 0x0000df6a : svc #0x6a (offset 0x11c)
RAM:0000011C SUBS R3, #5
RAM:0000011E MOVS R2, #0xF0
RAM:00000120 BICS R2, R3
RAM:00000122 B loc_50
RAM:00000122 ; End of function sub_11C
RAM:00000122
RAM:00000122 ; ---------------------------------------------------------------------------
RAM:00000124 dword_124 DCD 0x4000FC20 ; DATA XREF: sub_54+4↑r
RAM:00000124 ; sub_9E+5A↑r
RAM:00000128 dword_128 DCD 0x40040000 ; DATA XREF: sub_54+6↑r
RAM:0000012C dword_12C DCD 0xEAFFFFFE ; DATA XREF: sub_54+8↑r
RAM:00000130 off_130 DCD 0x1002A0 ; DATA XREF: sub_8E:loc_6E↑r
RAM:00000134 dword_134 DCD 0x5A55F0E1 ; DATA XREF: sub_86+2↑r
RAM:00000134 ; sub_8E+2↑r
RAM:00000138 dword_138 DCD 0x7000F900 ; DATA XREF: sub_9E↑r
RAM:0000013C off_13C DCD 0x7001231C ; DATA XREF: sub_9E+8↑r
RAM:00000140 off_140 DCD 0x7041231C ; DATA XREF: sub_9E+A↑r
RAM:00000144 dword_144 DCD 0x40004164 ; DATA XREF: sub_9E+40↑r
RAM:00000148 off_148 DCD 0x105A19 ; DATA XREF: sub_9E+4A↑r
RAM:0000014C dword_14C DCD 0x4000BE68 ; DATA XREF: sub_FE:loc_10C↑r
RAM:0000014C ; RAM endsFirst IROM patch
This patch is applied to the bootrom IPATCH handling function so that more patches can be loaded from fuses.
if (patch_start_addr == 0xAF) {
patch_start_addr = 0xFF;
}
patch_start_addr--;
return;IROM patch 0
This patch initializes all unused IRAM memory to 0xEAFFFFFE (infinite loop instruction).
/*
Untranslated instructions:
MOVS R3, #7
PUSH {R0,R1,R3-R6}
*/
for (u32 addr = 0x4000FC20; addr < 0x40040000; addr += 0x04) {
*(u32 *)addr = 0xEAFFFFFE;
}
/*
Untranslated instructions:
POP {R0,R1,R3-R6}
*/
return;Anti-downgrade
The first bootloader verifies FUSE_RESERVED_ODM7 to prevent downgrading. How many fuses are expected to be burnt depends the device's unit type as below.
| System version | Expected number of burnt fuses (retail) | Expected number of burnt fuses (non-retail) |
|---|---|---|
| 1.0.0 | 1 | 0 |
| 2.0.0-2.3.0 | 2 | 0 |
| 3.0.0 | 3 | 1 |
| 3.0.1-3.0.2 | 4 | 1 |
| 4.0.0-4.1.0 | 5 | 1 |
| 5.0.0-5.1.0 | 6 | 1 |
| 6.0.0-6.1.0 | 7 | 1 |
| 6.2.0 | 8 | 1 |
| 7.0.0-8.0.1 | 9 | 1 |
| 8.1.0 | 10 | 1 |
| 9.0.0-9.0.1 | 11 | 1 |
| 9.1.0-9.2.0 | 12 | 1 |
| 10.0.0-10.2.0 | 13 | 1 |
| 11.0.0-12.0.1 | 14 | 1 |
| 12.0.2-13.1.0 | 15 | 1 |
| 13.2.1-14.1.1 | 16 | 1 |
If too many fuses are burnt the bootloader will panic immediately.
If too few are burnt, the bootloader will enable fuse programming and write the expected value to fuses reserved_odm6 and reserved_odm7. Afterwards, fuse programming is disabled and the panic value 0x21 is written to PMC_SCRATCH200 register (0x7000EC40). Finally, the watchdog timer is initialized and programmed to force a reset.
On a subsequent boot, after the anti-downgrade fuses are checked again, the PMC_RST_STATUS register (0x7000E5B4) is checked and if set to 0x01 (watchdog reset) the PMC_SCRATCH200 register (0x7000EC40) will be checked for the panic value 0x21. PMC_RST_STATUS will only be set back to 0 (power on reset) if the fuse count matches the new expected value, otherwise the system will panic.