Artesyn MVME51005E SBC Installation and Use (July 2014) - Manual (Page 42)

PPCBug Firmware
MVME51005E Single Board Computer Installation and Use (6806800A38D) 44
3.3.1 Hardware and Firmware Initialization
The debugger performs the hardware and firmware initialization process. This process occurs
each time the MVME5100 is reset or powered up. The steps listed below are a high-level
outline; be aware that not all of the detailed steps are listed.
1. Sets MPU.MSR to known value.
2. Invalidates the MPU's data/instruction caches.
3. Clears all segment registers of the MPU.
4. Clears all block address translation registers of the MPU.
5. Initializes the MPU-bus-to-PCI-bus bridge device.
6. Initializes the PCI-bus-to-ISA-bus bridge device.
7. Calculates the external bus clock speed of the MPU.
8. Delays for 750 milliseconds.
9. Determines the CPU base board type.
10. Sizes the local read/write memory (that is, DRAM).
11. Initializes the read/write memory controller. Sets base address of memory to 0x00000000.
12. Retrieves the speed of read/write memory. Initializes the read/write memory controller
with the speed of read/write memory.
13. Initializes the read/write memory controller with the speed of read/write memory.
14. Retrieves the speed of read only memory (that is, Flash).
15. Initializes the read only memory controller with the speed of read only memory.
16. Enables the MPU's instruction cache.
17. Copies the MPU's exception vector table from 0xFFF00000 to 0x00000000.
18. Verifies MPU type.
19. Enables the superscalar feature of the MPU (superscalar processor boards only).
20. Verifies the external bus clock speed of the MPU.