OTP Registers: Difference between revisions
→Plaintext OTP: Manufacturing date in OTP is probably of the SoC because it's older than system flash |
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| 0x18 | | 0x18 | ||
| 0x1 | | 0x1 | ||
| | | OTP version | ||
|- | |- | ||
| 0x19 | | 0x19 | ||
| 0x1 | | 0x1 | ||
| This is the [[CTCert]] issuer type: 0 = retail "Nintendo CA - G3_NintendoCTR2prod", non-zero = dev "Nintendo CA - G3_NintendoCTR2dev". | | This determines if the OTP is for a dev system; it indicates the [[CTCert]] issuer type: 0 = retail "Nintendo CA - G3_NintendoCTR2prod", non-zero = dev "Nintendo CA - G3_NintendoCTR2dev". | ||
|- | |- | ||
| 0x1A | | 0x1A | ||
| 0x6 | | 0x6 | ||
| Manufacturing date (of the SoC?). Usually month(s) before the dates in the logs stored in [[Flash_Filesystem|TWLNAND]]. Each byte is one field: year, month, day, hour, minute, second. Year is encoded as year-1900 so that it fits in one byte. | | Manufacturing date (of the SoC?). Usually month(s) before the dates in the logs stored in [[Flash_Filesystem|TWLNAND]]. Each byte is one field: year, month, day, hour, minute, second. Year is encoded as year-1900 so that it fits in one byte. This order matches up with the layout of a <code>struct tm</code>. | ||
|- | |- | ||
| 0x20 | | 0x20 | ||
| 0x4 | | 0x4 | ||
| This is the CTCert | | This is the CTCert expiry time as UNIX timestamp, this is specified in big endian if the OTP version is <5. | ||
|- | |- | ||
| 0x24 | | 0x24 | ||
| | | 0x20 | ||
| This is the CTCert ECDSA privk. | | This is the CTCert ECDSA privk. | ||
|- | |- | ||
| 0x44 | | 0x44 | ||
| 0x3C | | 0x3C | ||
| This is the CTCert ECDSA signature. | | This is the CTCert ECDSA signature (sect233r1?/SHA-256). | ||
|- | |- | ||
| 0x80 | | 0x80 | ||