Switch 2: Fuses: Difference between revisions
Add info from Orin Fuse specification |
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| 0 || 5..8 || [[#OdmLock]] | | 0 || 5..8 || [[#OdmLock]] | ||
|- | |- | ||
| 0 || 9 || Fa | | 0 || 9 || [[#Fa]] | ||
|- | |- | ||
| 0 || 10 || SecurityMode | | 0 || 10 || [[#SecurityMode]] | ||
|- | |- | ||
| 0 || 11 || ArmJtagDisable | | 0 || 11 || [[#ArmJtagDisable]] | ||
|- | |- | ||
| 0 || 12 || NvJtagProtectionEnable | | 0 || 12 || [[#NvJtagProtectionEnable]] | ||
|- | |- | ||
| 0 || 16..20 || DebugAuthentication | | 0 || 16..20 || [[#DebugAuthentication]] | ||
|- | |- | ||
| 0 || 28 || ZeroizeDis | | 0 || 28 || ZeroizeDis | ||
| Line 624: | Line 624: | ||
Both shadowed values should always agree with each other, and they should be programmed together without a reset in-between. | Both shadowed values should always agree with each other, and they should be programmed together without a reset in-between. | ||
The two redundant bits are OR'd together which protects 1 from becoming a 0. | |||
=== H2 Fuses === | === H2 Fuses === | ||
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== NvJtagProtectionEnable == | == NvJtagProtectionEnable == | ||
If set, [[#Fa]] cannot be used. | If set, [[#Fa]] cannot be used. | ||
== SecurityMode == | |||
According to documentation, this acts as a lock for "all manufacturing fuses", and prevents them from being read or modified. | |||
Also known as the "ODM production mode" fuse. | |||
== ArmJtagDisable == | |||
External debug paths disable for both Arm JTAG and USB SWD. | |||
== DebugAuthentication == | |||
Fine-grained disables on debug signals. | |||
bit0: Forces dbgen to 0 | |||
bit1: Forces niden to 0 | |||
bit2: Forces spiden to 0 | |||
bit3: Forces spniden to 0 | |||
bit4: Forces deviceen to 0 | |||
== SecBootDeviceSelect == | == SecBootDeviceSelect == | ||
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== H2 == | == H2 == | ||
CRC32 of physical fuse words #188 bit20 and above, up to word #259 bit24. Uses polynomial 0x1EDC6F41. | CRC32 of physical fuse words #188 bit20 and above, up to word #259 bit24. Uses polynomial 0x1EDC6F41. | ||