1/*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License.  See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * PROM library functions for acquiring/using memory descriptors given to
7 * us from the YAMON.
8 *
9 * Copyright (C) 1999,2000,2012  MIPS Technologies, Inc.
10 * All rights reserved.
11 * Authors: Carsten Langgaard <carstenl@mips.com>
12 *          Steven J. Hill <sjhill@mips.com>
13 */
14#include <linux/init.h>
15#include <linux/bootmem.h>
16#include <linux/string.h>
17
18#include <asm/bootinfo.h>
19#include <asm/cdmm.h>
20#include <asm/maar.h>
21#include <asm/sections.h>
22#include <asm/fw/fw.h>
23
24/* determined physical memory size, not overridden by command line args	 */
25unsigned long physical_memsize = 0L;
26
27static void free_init_pages_eva_malta(void *begin, void *end)
28{
29	free_init_pages("unused kernel", __pa_symbol((unsigned long *)begin),
30			__pa_symbol((unsigned long *)end));
31}
32
33void __init fw_meminit(void)
34{
35	bool eva = config_enabled(CONFIG_EVA);
36
37	free_init_pages_eva = eva ? free_init_pages_eva_malta : NULL;
38}
39
40void __init prom_free_prom_memory(void)
41{
42	unsigned long addr;
43	int i;
44
45	for (i = 0; i < boot_mem_map.nr_map; i++) {
46		if (boot_mem_map.map[i].type != BOOT_MEM_ROM_DATA)
47			continue;
48
49		addr = boot_mem_map.map[i].addr;
50		free_init_pages("YAMON memory",
51				addr, addr + boot_mem_map.map[i].size);
52	}
53}
54
55phys_addr_t mips_cdmm_phys_base(void)
56{
57	/* This address is "typically unused" */
58	return 0x1fc10000;
59}
60