I am working on a embedded board with MIPS architecture and i have a requirement to initialize the 128MB RAM by writing zero's onto the memory. I have coded the following thing

// RAM...

I need to read the BAR (Base Address Register) Length in PCI. How can i do that. I can able to find the Devices present in the PCI using the CF8 and CFC ports. But, how can i get length of the BAR...