Hardware platform for powerPC, software for vxWorks6.9. Hardware design for 1 gb DDR, BSP is configured with 1 gb DDR, bootrom starts, in the bootrom command line interface can access the 1 gb of memory space, vxWorks image starts can only access memory space before 0 x30000000, 0 x30000000 ~ 0 x40000000 this section 256 MB of space is not to access, once access will cause an exception, try to remove the RTP, components in the component, the result is still the same, have encountered the same problem of great god please teach, thank you very much!

CodePudding user response:

The system is running, your operating system, applications, drivers, etc., are stored in the DDR, call waiting for CPU execution, the system will allocate a certain space to a specific program, does not allow users to access,
You visited, belong to abnormal operation, so an error after ather 111

The operating system memory layout:

CodePudding user response:

1. The MMU may not be mapping the space
2. May be PCIE weight map
Check your syslib carefully. C and hwconf. C