AMD XHCI: Difference between revisions
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(some more info on the fch xhci controller) |
m (acronym expansion of BCD and ACD) |
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|0x000c || 2 || Offset to the ACD || | |0x000c || 2 || Offset to the ACD || | ||
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BCD = Boot Configuration Data | |||
ACD = Application Configuration Data | |||
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Latest revision as of 16:53, 23 April 2015
AMD XHCI
The AMD XHCI controller in Hudson chip seems to be IP Core of Renesas uPD720200/200A. It looks the firmware consists of multi parts:
| Offset | Size in bytes | What | |
|---|---|---|---|
| 0x0000 | 2 | Signature 0x55aa | |
| 0x0002 | 2 | Offset to the BCD (type0?) | |
| 0x0004 | 2 | BCD size | |
| 0x0006 | 2 | Offset to Main FW (type1?) | |
| 0x0008 | 2 | Main FW size | |
| 0x000a | 2 | Offset to the ACD (type2?) | |
| 0x000c | 2 | Offset to the ACD |
BCD = Boot Configuration Data ACD = Application Configuration Data
| Offset | Size in bytes | What | |
|---|---|---|---|
| 0x0000 | 2 | Firmware version - 0x3032 means 3.0.3.2 | |
| 0x0002 | - | Firmware data, most likely V850E1 controller |
The firmware in blobs repository is 3.0.3.2, quite common version 3.0.3.4.0.8 found on the internet matches well 0xcf0 bytes. It is not know where the 0.8 subversion is stored.
The firmware entry point seems to be at the beginning of the firmware blob (right after the version bytes).
At the end of the firmware there is some kind of function hook table.
address space layout of the embedded microcontroller
0x00000000-0x00007FFF: internal mask ROM
0x00008000-0x0000FFFF: loaded firmware (without version bytes)