From mboxrd@z Thu Jan 1 00:00:00 1970 From: york sun Date: Wed, 26 Oct 2016 16:39:26 +0000 Subject: [U-Boot] [PATCH] armv8/ls1043a: Add the OCRAM initialization References: <1476274533-17995-1-git-send-email-pratiyush.srivastava@nxp.com> Message-ID: List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de On 10/24/2016 09:30 PM, Calvin Johnson wrote: >>>> I wonder why we don't see ECC errors before this patch. We have >>>> LS1043A boots on NAND, SD. >>>> >>> >>> OCRAM has a requirement of initializing before first time "read". >>> If user reads OCRAM before **initializing**; ECC error will come. (u-boot is not handling this error for now). >>> >>> I can only guess the reason of not seeing this error as OCRAM never read before any write. >>> Even in case of Stack, data is first written and then read. >>> >> >> Is there a case you want to read from OCRAM before writing anything to it? Why don't we need to do so for SPL or LSCH3? > > This issue will be seen ONLY in secure boot. It was reproduced on LS1043A also. > How about LSCH3? We have LS2080A secure boot. York