On 03.09.2015 12:46, Marek Vasut wrote:
On Thursday, September 03, 2015 at 12:17:13 PM, Jian Luo wrote:
Hi!
[...]
Yes, I can. But U-Boot can still have problem with other Image which disables ECC. I found another post related to this problem https://lkml.org/lkml/2015/2/6/685 .
Quote: To initialize ECC, the OCRAM needs to enable ECC
then clear
the entire
memory to zero before using it.Hi!
Oh, but that is a problem, since we're running from the OCRAM
ourselves,
thus we cannot clear the OCRAM. Maybe we should force-disable the ECC instead? But can we be sure that the corruption does not happen when you disable ECC ?
Yes, that will be a problem. It's also why I let the SYSMGR_ECC_OCRAM_EN bit intact in the patch.
OK, but what about turning the ECC off in the SPL, will that also
introduce
corruption or not ? That might be the right fix, no ?
Hi Marek,
Sorry, I don't know the detail of ECC implementation in socfpga. Dinh might have the answer to that.
Anyhow I still think let the setting untouched is the safest fix. SPL should use the same ECC setting which BROM loads SPL with.
Best regards, Marek Vasut
Best regards,
Jian Luo