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e4117421a1
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Add GPIF streaming path and kernel firmware format analyses
GPIF streaming analysis (772 lines):
- IFCONFIG=0xEE: GPIF master mode, 48MHz async, BCM4500 data bus
- Fully hardware-managed path: BCM4500 -> GPIF -> EP2 FIFO -> USB bulk
- EP2FIFOCFG=0x0C (AUTOIN, 8-bit), FLOWSTATEA |= 0x09 (auto re-trigger)
- Byte-for-byte identical register config across all firmware versions
- ARM_TRANSFER (cmd 0x85) start/stop flow documented with disassembly
Kernel FW01 analysis (425 lines):
- FW01/FW02 files never existed in linux-firmware or any distribution
- SkyWalker-1 boots from onboard EEPROM, never needs host firmware
- DVB-USB binary hexline format documented (compact Intel HEX variant)
- C2 EEPROM format vs kernel hexline format comparison
- Binary comparison matrix for all 5 firmware dumps
- Anti-tampering string found in v2.13 at offset 0x1880
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2026-02-11 12:18:09 -07:00 |
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