About ERR004365 EXSC: Exclusive accesses to certain memories are not supported to full AXI specification in i.MX6DQ.

[keitanagashima]

Dear All,

Refer to ERR004365 in IMX6DQCE(Rev.6).

Projected Impact is "EIM does not support exclusive accesses according to AXI specifications."

[Questions]

1. Is there a use case of exclusive accesses in BSP (jb4.2.2_1.0.0)?

2. I think that the user doesn't need to care the AXI bus access.

How implement the workaround to avoid the exclusive accesses?

Best Regards,

Keita

[Yuri · Accepted solution]

Hello,

  ARM provides exclusive access functionality via the LDREX/STREX pair of instructions.

ARM Information Center

NXP Android does not use this mechanism for EIM.  

To avoid the issue customers also should not use these exclusive accesses for EIM in their

applications and drivers.

Have a great day,
Yuri

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