| bool gRAMDiskBTAliased = false;␊ |
| char gRAMDiskFile[512];␊ |
| ␊ |
| ␊ |
| // Notify OS X that a ramdisk has been setup. XNU with attach this to /dev/md0␊ |
| void md0Ramdisk()␊ |
| {␊ |
| ␉RAMDiskParam ramdiskPtr;␊ |
| ␉char* filename = 0;␊ |
| ␉int fh = 0;␊ |
| ␉␊ |
| ␉// Look for a ramdisk at Postboot.img (TODO: make configurable)␊ |
| ␉filename = "rd(0,0)/Extra/Postboot.img";␊ |
| ␉if((fh = open(filename, 0)) == -1)␊ |
| ␉{␊ |
| ␉␉filename = "/Extra/Postboot.img";␉// Check /Extra if not in rd(0,0)␊ |
| ␉␉fh = open(filename, 0);␊ |
| ␊ |
| ␉}␊ |
| ␉␊ |
| ␉␊ |
| ␉if (fh != -1)␊ |
| ␉{␊ |
| ␉␉verbose("Enabling ramdisk %s\n", filename);␊ |
| ␊ |
| ␉␉ramdiskPtr.size = file_size(fh);␊ |
| ␉␉ramdiskPtr.base = AllocateKernelMemory(ramdiskPtr.size);␊ |
| ␉␉␊ |
| ␉␉if(ramdiskPtr.size && ramdiskPtr.base)␊ |
| ␉␉{␊ |
| ␉␉␉// Read new ramdisk image contents in kernel memory.␊ |
| ␉␉␉if (read(fh, (char*) ramdiskPtr.base, ramdiskPtr.size) == ramdiskPtr.size)␊ |
| ␉␉␉{␊ |
| ␉␉␉␉AllocateMemoryRange("RAMDisk", ramdiskPtr.base, ramdiskPtr.size, kBootDriverTypeInvalid);␊ |
| ␉␉␉␉Node* node = DT__FindNode("/chosen/memory-map", false);␊ |
| ␉␉␉␉if(node != NULL)␊ |
| ␉␉␉␉{␊ |
| ␉␉␉␉␉DT__AddProperty(node, "RAMDisk", sizeof(RAMDiskParam), (void*)&ramdiskPtr);␉␉␊ |
| ␉␉␉␉␉␊ |
| ␉␉␉␉}␊ |
| ␉␉␉␉else␊ |
| ␉␉␉␉{␊ |
| ␉␉␉␉␉verbose("Unable to notify Mac OS X of the ramdisk %s.\n", filename);␊ |
| ␉␉␉␉}␊ |
| ␉␉␉␉␊ |
| ␉␉␉}␊ |
| ␉␉␉else {␊ |
| ␉␉␉␉verbose("Unable to read ramdisk %s\n", filename);␊ |
| ␉␉␉}␊ |
| ␉␉␉␊ |
| ␉␉} else {␊ |
| ␉␉␉verbose("Ramdisk %s is empty.\n", filename);␊ |
| ␉␉}␊ |
| ␉␉␊ |
| ␉␉␊ |
| ␉␉close(fh);␊ |
| ␉␉␊ |
| ␉}␊ |
| ␉else {␊ |
| ␉␉verbose("Unable to open %s\n", filename);␊ |
| ␉}␊ |
| }␊ |
| ␊ |
| ␊ |
| void umountRAMDisk()␊ |
| {␊ |
| if (gRAMDiskMI != NULL)␊ |
