linux-kernel - [PATCH v4 0/1] EDAC/altera: Check previous DDR DBE during driver probe

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Message-Id: <20230615022534.4163918-1-niravkumar.l.rabara@intel.com>
Date:   Thu, 15 Jun 2023 10:25:33 +0800
From:   niravkumar.l.rabara@...el.com
To:     niravkumar.l.rabara@...el.com
Cc:     bp@...en8.de, dinguyen@...nel.org, james.morse@....com,
        linux-edac@...r.kernel.org, linux-kernel@...r.kernel.org,
        mchehab@...nel.org, rric@...nel.org, tony.luck@...el.com
Subject: [PATCH v4 0/1] EDAC/altera: Check previous DDR DBE during driver probe

From: Niravkumar L Rabara <niravkumar.l.rabara@...el.com>

Starting from SoCFPGA Agilex7, new SDM mailbox command is introduced to
read Single Event Upset Error information, SEU can detect both corrected
and uncorrected error.

If the previous HPS reboot caused by the DDR double bit error, bit-31 is
set high of boot scratch register 8. EDAC driver probe will check this
bit status and sends the SMC command to Arm Trusted Firmware.
Firmware will send mailbox command to SDM to get the SEU error
information and pass it to EDAC driver, driver will print error count,
sector address and error data for previous DDR DBE.

Introduce a new command to get Single Event Upset Error information.

changelog v4:
* Combined both the patch as per last review comment.

changelog v3:
* Fixed unnecessary type case, checkpatch warnings and typo

changelog v2:
* Updated command ID for SEU error

Niravkumar L Rabara (1):
  EDAC/altera: Check previous DDR DBE during driver probe

 drivers/edac/altera_edac.c                   | 29 ++++++++++++++++----
 include/linux/firmware/intel/stratix10-smc.h | 20 ++++++++++++++
 2 files changed, 44 insertions(+), 5 deletions(-)

-- 
2.25.1