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/arch/mips/mti-malta/malta-memory.c

http://github.com/mirrors/linux
C | 48 lines | 26 code | 7 blank | 15 comment | 0 complexity | 65ac55c6fbcee17fd8b2d0c869fd754a MD5 | raw file
 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/memblock.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 = IS_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}
43
44phys_addr_t mips_cdmm_phys_base(void)
45{
46	/* This address is "typically unused" */
47	return 0x1fc10000;
48}