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1.6 KiB
1.6 KiB
#TREZOR Core Bootloader
All multibyte integer values are little endian!
##Firmware File Format
TREZOR Core firmware file consists of 3 parts:
- vendor header
- firmware header
- firmware code
###Vendor Header
| offset | length | name | description |
|---|---|---|---|
| 0x0000 | 4 | magic | firmware magic TRZV |
| 0x0004 | 4 | hlen | length of the vendor header |
| 0x0008 | 4 | expiry | valid until timestamp |
| 0x000C | 1 | vsig_m | number of signatures needed to run the firmware from this vendor |
| 0x000D | 1 | vsig_n | number of pubkeys vendor wants to use for signing |
| 0x000E | 1 | vstr_len | vendor string length |
| 0x000F | ? | vstr | vendor string |
| ? | ? | vimg | vendor image (in TOIf format) |
| ? | 32 | vpub1 | vendor pubkey 1 |
| ... | ... | ... | ... |
| ? | 32 | vpubn | vendor pubkey n |
| ? | 1 | slsigidx | SatoshiLabs signature indexes |
| ? | 64 | slsig | SatoshiLabs signature |
###Firmware Header
| offset | length | name | description |
|---|---|---|---|
| 0x0000 | 4 | magic | firmware magic TRZF |
| 0x0004 | 4 | hlen | length of the firmware header |
| 0x0008 | 4 | expiry | valid until timestamp |
| 0x000C | 4 | codelen | length of the firmware code |
| 0x0010 | 1 | vmajor | version (major) |
| 0x0011 | 1 | vminor | version (minor) |
| 0x0012 | 1 | vpatch | version (patch) |
| 0x0013 | 1 | vbuild | version (build) |
| 0x0014 | 1 | vidx | vendor signature indexes |
| 0x0015 | 64 | vsign | vendor signature |