| 0,0 → 1,88 |
|---|
| /* |
| * Copyright (C) 2005 Martin Decky |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include <genarch/ofw/memory_init.h> |
| #include <genarch/ofw/ofw.h> |
| #include <panic.h> |
| #include <mm/frame.h> |
| #include <align.h> |
| #include <arch/types.h> |
| #include <typedefs.h> |
| |
| #define MEMMAP_MAX_RECORDS 32 |
| |
| typedef struct { |
| __address start; |
| size_t size; |
| } memmap_t; |
| |
| static memmap_t memmap[MEMMAP_MAX_RECORDS]; |
| size_t total_mem = 0; |
| |
| void ofw_init_memmap(void) |
| { |
| int i; |
| int ret; |
| |
| phandle handle = ofw_find_device("/memory"); |
| if (handle == -1) |
| panic("No RAM\n"); |
| |
| ret = ofw_get_property(handle, "reg", &memmap, sizeof(memmap)); |
| if (ret == -1) |
| panic("Device /memory has no reg property\n"); |
| |
| |
| for (i = 0; i < MEMMAP_MAX_RECORDS; i++) { |
| if (memmap[i].size == 0) |
| break; |
| total_mem += memmap[i].size; |
| } |
| } |
| |
| size_t ofw_get_memory_size(void) |
| { |
| return total_mem; |
| } |
| |
| void ofw_init_zones(void) |
| { |
| int i; |
| pfn_t confdata; |
| |
| for (i = 0; i < MEMMAP_MAX_RECORDS; i++) { |
| if (memmap[i].size == 0) |
| break; |
| confdata = ADDR2PFN(memmap[i].start); |
| if (confdata == 0) |
| confdata = 2; |
| zone_create(ADDR2PFN(memmap[i].start), |
| SIZE2FRAMES(ALIGN_DOWN(memmap[i].size,PAGE_SIZE)), |
| confdata, 0); |
| } |
| } |