00001 /* 00002 * Copyright (C) 2005 Martin Decky 00003 * All rights reserved. 00004 * 00005 * Redistribution and use in source and binary forms, with or without 00006 * modification, are permitted provided that the following conditions 00007 * are met: 00008 * 00009 * - Redistributions of source code must retain the above copyright 00010 * notice, this list of conditions and the following disclaimer. 00011 * - Redistributions in binary form must reproduce the above copyright 00012 * notice, this list of conditions and the following disclaimer in the 00013 * documentation and/or other materials provided with the distribution. 00014 * - The name of the author may not be used to endorse or promote products 00015 * derived from this software without specific prior written permission. 00016 * 00017 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 00018 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 00019 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 00020 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 00021 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 00022 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 00023 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 00024 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 00025 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 00026 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00027 */ 00028 00035 #include <genarch/ofw/memory_init.h> 00036 #include <genarch/ofw/ofw.h> 00037 #include <panic.h> 00038 #include <mm/frame.h> 00039 #include <align.h> 00040 #include <arch/types.h> 00041 #include <typedefs.h> 00042 00043 #define MEMMAP_MAX_RECORDS 32 00044 00045 typedef struct { 00046 __address start; 00047 size_t size; 00048 } memmap_t; 00049 00050 static memmap_t memmap[MEMMAP_MAX_RECORDS]; 00051 size_t total_mem = 0; 00052 00053 void ofw_init_memmap(void) 00054 { 00055 int i; 00056 int ret; 00057 00058 phandle handle = ofw_find_device("/memory"); 00059 if (handle == -1) 00060 panic("No RAM\n"); 00061 00062 ret = ofw_get_property(handle, "reg", &memmap, sizeof(memmap)); 00063 if (ret == -1) 00064 panic("Device /memory has no reg property\n"); 00065 00066 00067 for (i = 0; i < MEMMAP_MAX_RECORDS; i++) { 00068 if (memmap[i].size == 0) 00069 break; 00070 total_mem += memmap[i].size; 00071 } 00072 } 00073 00074 size_t ofw_get_memory_size(void) 00075 { 00076 return total_mem; 00077 } 00078 00079 void ofw_init_zones(void) 00080 { 00081 int i; 00082 pfn_t confdata; 00083 00084 for (i = 0; i < MEMMAP_MAX_RECORDS; i++) { 00085 if (memmap[i].size == 0) 00086 break; 00087 confdata = ADDR2PFN(memmap[i].start); 00088 if (confdata == 0) 00089 confdata = 2; 00090 zone_create(ADDR2PFN(memmap[i].start), 00091 SIZE2FRAMES(ALIGN_DOWN(memmap[i].size,PAGE_SIZE)), 00092 confdata, 0); 00093 } 00094 } 00095