Part Number: AM263P4-Q1
Tool/software:
Hi Team,
One of my customer is facing following problem. Please support.
Problem: When set permissions for L2OCRAM_Bank0_SLV, L2OCRAM_Bank1_SLV in the MPU Firewall, the last 24 bytes of Bank0, Bank1 in OCRAM are no longer visible.
Configuration;
L2OCRAM_BANK0_SLV Conig L2OCRAM_BANK1_SLV Config
MPU ARMv7 Config
Program:
Firewall setting
Functions
Memory Dump "Before" MPU Firewall setting Memory Dump "After" MPU Firewall setting
Last of BANK0 Last of BANK0
Last of BANK1 Last of BANK1
Last of BANK2 Last of BANK2
24Byte data is missing from the end of Bank0, Bank1 after MPU Firewall configuration (red box)
If a program is placed in a missing area, a prefetch abort occurs (and so does the data).
Quetion1: Is this related following description in TRM?
AM263Px_TechnicalReferenceManual.pdf 3.8.3.1 Functional Operation
Question2: Is this expected behavior? If no, What settings will cause these symptoms to occur? And what settings will be able to avoid the symptom?
What customer wants to do here is "give all permissions to all IDs (R5FSS0_0 - external ID) to the specified area (this time Bank0, 1 of OSCRAM)." Of the device.
Customer think it is OK to set the setting to not check access other than the external ID as shown below. In this case, an invalid C code is output. it looks like a compilation error.
Best Regards
