TE0720: EEProm and Crypto chip

[GuinnessTrinker]

How can I have access to these devices from FSBL, "UBoot", "Stand Alone SW" and Linux?
- U10= ATSHA204A
- U17= 11AA02E48T

Are there any examples how to use them for example to de/encrypt rootfs?
Does it contain MAC-addresses for both Ethernetadapters?

Any further documentation beside Trenz-schematic and datasheet from vendors?

[Oleksandr Kiyenko]

Hello,

MAC address from U17 is readed automatically in SC CPLD and then readed by software in FSBL. You can found code in our FSBL example (files fsbl_hooks.c TE0720-02.c TE0720-02.h)
You can access U10 chip from FPGA fabric (Signals X3(FPGA pin  N15) X2(FPGA pin M15)), corresponding bits SC register CR2 should be set. See https://wiki.trenz-electronic.de/display/TE0720/SC+Firmware+ver+0.02
Unfortunatelly we don't have complete software example for this chip.

Best regards
Oleksandr Kiyenko

[GuinnessTrinker]

Thank you for these informations!

I think you are talking about the FSBL-patches inside
http://www.trenz-electronic.de/fileadmin/docs/Trenz_Electronic/TE0720-GigaZee/reference_designs/2014.4/TE0720-02-hdmi.zip
??

TE0720-02.c TE0720-02.h are missing, but there are are te_fsbl_config.h, te_fsbl_hooks.c, .h


Btw.
http://www.trenz-electronic.de/download/d0/Trenz_Electronic/d1/TE0720-GigaZee/d2/reference_designs/d3/2015.2.html
does not include these files.


N15 and M15 are signals X3 and X2 connected to CPLD.

SC register CR2   means Control Register 2; XIO Control

I can read this with
Status = XEmacPs_PhyRead(&Emac, 0x1A,  6, &rval16)
??

Where can I find a bit description of these control-registers
??
Which bit should be set to enable U10?



So after enabling corresponding bits SC register CR2 I should be able to read U10

I have to connect an IIC to cpld_x2 and 3 in PL like the SC ist connected in your SC-IP-core to cpld_x1 and 7 (for communication with RTC)
??

So the SC makes a conversion from IIC to the Single-Wire-Interface of U10
??

[Oleksandr Kiyenko]

Hello

I add some additional registers and pins description to https://wiki.trenz-electronic.de/display/TE0720/SC+Firmware+ver+0.02

Best regards
Oleksandr Kiyenko