Multi Bit ECC Error Handler for EEPROM Emulation Overprogramming

manojgovindan — Sun, 31 Jul 2016 06:49:16 GMT

Hi,

MPC574XG FLS Driver Integration manual (Document Number: IM35FLSASR4.0 Rev0003R1.0.1) suggest to Skip the instruction which caused the Error to handle Double bit ECC error. To handle the Excpetion the MSR[ME] is set to 1 and FLS DSI handler is called with MCSR and MCAR values. The handler will set the Read Job status as Failed. When returning from the Exception handler whether the instruction which caused the error will be skipped or there is any extra step needs to be implemented?

Thanks,

Manoj

Re: Multi Bit ECC Error Handler for EEPROM Emulation Overprogramming

lukaszadrapa — Wed, 03 Aug 2016 04:54:24 GMT

In order to handle ECC with FLS and FEE, the error notification should be configured to call Fee_JobErrorNotification.
This could be configured at the configuration phase. When returning from the Excaption handler, the instruction which caused the error will be skipped then the job error notification will be called by Fls driver. And of course, the IVOR1 handler should be implemented correctly to recover from the exception such as clear exception flag, call Fls exception handler, save the next instruction address to the instruction save and restore register then return from the exception to next instruction to skip the instruction which caused ECC error.

Lukas

topic Multi Bit ECC Error Handler for EEPROM Emulation Overprogramming in MPC5xxx

Multi Bit ECC Error Handler for EEPROM Emulation Overprogramming

Re: Multi Bit ECC Error Handler for EEPROM Emulation Overprogramming