Hi,
I want to ensure the ECC functionality are proper on LX2080A.
In the LX2160A Reference Manual, the DDR memory controller will detect four different kinds of errors:
1) training 2) single-bit 3) multi-bit 4) memory select errors.
Now I generate single-bit errors and multi-bit errors as below steps: (Please refer to the attached test log)
Method1: Setting a mask bit causes the corresponding ECC bit to be inverted on memory bus writes.
1.1 Check DDR_SDRAM_CFG[ECC_EN] is 1 (ECC enabled)
1.2.a Set ECC_ERR_INJECT[EEIM] to 0x01 (inject 1 bit ECC parity errors) for single-bit errors
(1.2.b Set ECC_ERR_INJECT[EEIM] to 0xff (inject 8 bits ECC parity errors) for multi-bit errors)
1.3 Set ECC_ERR_INJECT[EIEN] to 1 (error injection enabled)
1.4 Set ECC_ERR_INJECT[EIEN] to 0 (error injection disabled)
1.5 Check ERROR_DETECT and ERR_SBE
Method2: Setting a bit causes the corresponding data path bit to be inverted on memory bus writes.
2.1 Set ECC_ERR_INJECT[EIEN] to 1 (error injection enabled)
2.2.a Set DATA_ERR_INJECT_LO to 0x01 (the LSbit of 64-bit word is going to be inverted) for single-bit errors
(2.2.b Set DATA_ERR_INJECT_LO to 0x03 (the LSbit of 64-bit word is going to be inverted) for multi-bit errors)
2.3 Set ECC_ERR_INJECT[EIEN] to 1 (error injection enabled)
2.4 Check ERROR_DETECT and ERR_SBE
Questions:
Q1: Could you please help me to confirm above steps are correct or not?
Q2: How to automatically fix single-bit errors? (I have enable ECC_FIX_EN and set ECC_SCRUB_INT but it's no work.)
Q3: How to generate ecc error interrupt? (I have enable SBEE but no interrupt message on U-Boot)
Q4: How to verify the others errors like training and memory select errors?
Regards,
Rose
