Linux/PROCESSOR-SDK-AM437X: Writing to EEPROM results in dead board

Phillip Holtzman

Intellectual 380 points

Part Number: PROCESSOR-SDK-AM437X

Tool/software: Linux

I may have accidently erased the EEPROM data at address 0x80..0x86. Now the EVM board fails to boot.

According to the AM437x Technical Reference Manual, these data are magic numbers.

How do I restore the EEPROM on the EVM?

over 6 years ago

0 Phillip Holtzman over 6 years ago

Intellectual 380 points

I logged the contents of the EEPROM on a second EVM and there is ASCII data in the first 34 bytes.
This data is Header, Board Name, Version, Serial Number, and Configuration (Industrial EVM User's Manual, Table 4).
All of the remaining data in the EEPROM is 0xff.
Is 0xff a magic number for booting?

0 Kemal R. Shakir over 6 years ago in reply to Phillip Holtzman

TI__Guru 55345 points

Hello Phillip,

You can find the magic number defined in the <Processor SKD>/board-support/u-boot-<versio>/board/ti/common/board_detect.c file, at line 13.

Best regards,
Kemal

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Linux/PROCESSOR-SDK-AM437X: Writing to EEPROM results in dead board