Re: [m5-users] Adding memory module and recognize two memory in Linux

[Youngwoo Park]

Thank you very much Nate. In order to increase the memory size, I forcely describes the memory size in alhpa backdoor. void AlphaBackdoor::startup() {     system->setAlphaAccess(pioAddr);     alphaAccess->numCPUs = system->numContexts();     alphaAccess->kernStart = system->getKernelStart();     alphaAccess->kernEnd = system->getKernelEnd();     alphaAccess->entryPoint = system->getKernelEntry();     //alphaAccess->mem_size = system->physmem->size();     alphaAccess->mem_size = 160*1024*1024; I sucess to install total 160MB memory in Linux(32MB physmem and 128MB physmem2). In my opinion, it has no problem to use physmem and physmem2 at the same time. Both physmem and physmem2 have their own address ranges. By the physical address, M5 decide to access phymem or phymem2. Is it right? I think I can modify AlphaBackdoor to insert the parameter of memory size. Youngwoo Park nathan binkert 쓴 글: hmmm. This is a problem with the way the alpha console works. There's an object called AlphaBackdoor that allows the console code to get parameters about the system. The AlphaBackdoor uses the system pointer to get to physmem and query it about how much memory it has. Unfortunately, this all happens on the C++ side (an artifact of the way things used to work long ago.) Really, the AlphaBackdoor should have at least some of its parameters exposed in python and the python mecahanism should be used to set the defaults. Check out src/dev/alpha Nate 2009/11/9 Youngwoo Park <ywp...@core.kaist.ac.kr>: I want to add a second memory module for ALPHA_FS simulator. First, I create 'physmem2' object in FSConfig.py files when making Linux alpha system. def makeLinuxAlphaSystem(mem_mode, mdesc = None):     class BaseTsunami(Tsunami):         ethernet = NSGigE(pci_bus=0, pci_dev=1, pci_func=0)         ide = IdeController(disks=[Parent.disk0, Parent.disk2],                             pci_func=0, pci_dev=0, pci_bus=0)     self = LinuxAlphaSystem()     if not mdesc:         # generic system         mdesc = SysConfig()     self.readfile = mdesc.script()     self.iobus = Bus(bus_id=0)     self.membus = MemBus(bus_id=1)     self.bridge = Bridge(delay='50ns', nack_delay='4ns')     self.physmem = PhysicalMemory(range = AddrRange(Addr('0MB'), size = '128MB'))     self.physmem2 = PhysicalMemory(range = AddrRange(Addr('128MB'), size ='128MB'))     self.bridge.side_a = self.iobus.port     self.bridge.side_b = self.membus.port     self.physmem.port = self.membus.port     self.physmem2.port = self.membus.port ... After I start to the alpha machine, I can find that the 'physmem2' object is created. The 'config.ini' is show that [system.physmem2] type=PhysicalMemory file= latency=30000 latency_var=0 null=false range=134217728:268435455 zero=false port=system.membus.port[2] However, when I start to boot Linux OS, it can only recognize 'physmem'. The final memory size of Linux is 128MB like belows? M5 console: m5AlphaAccess @ 0xFFFFFD0200000000 Got Configuration 623 memsize 8000000 pages 4000 Is there anything to do that I use both of physmem and physmem2? Thank you in advance. Youngwoo Park _______________________________________________ m5-users mailing list m5-users@m5sim.org http://m5sim.org/cgi-bin/mailman/listinfo/m5-users _______________________________________________ m5-users mailing list m5-users@m5sim.org http://m5sim.org/cgi-bin/mailman/listinfo/m5-users -- Youngwoo Park Ph.D Student CORE(COmputer engineering REsearch) Lab Dept. EECS, KAIST, Daejeon 305-701, Korea Phone: +82-42-869-5425 Fax: +82-42-8695425 e-mail: ywp...@core.kaist.ac.kr --

_______________________________________________
m5-users mailing list
m5-users@m5sim.org
http://m5sim.org/cgi-bin/mailman/listinfo/m5-users