1/*-
2 * Copyright (c) 2014 Ian Lepore <ian@freebsd.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD$
27 */
28
29#ifndef	_MACHINE_PHYSMEM_H_
30#define	_MACHINE_PHYSMEM_H_
31
32/*
33 * The physical address at which the kernel was loaded.
34 */
35extern vm_paddr_t arm_physmem_kernaddr;
36
37/*
38 * Routines to help configure physical ram.
39 *
40 * Multiple regions of contiguous physical ram can be added (in any order).
41 *
42 * Multiple regions of physical ram that should be excluded from crash dumps, or
43 * memory allocation, or both, can be added (in any order).
44 *
45 * After all early kernel init is done and it's time to configure all
46 * remainining non-excluded physical ram for use by other parts of the kernel,
47 * arm_physmem_init_kernel_globals() processes the hardware regions and
48 * exclusion regions to generate the global dump_avail and phys_avail arrays
49 * that communicate physical ram configuration to other parts of the kernel.
50 */
51
52#define	EXFLAG_NODUMP	0x01
53#define	EXFLAG_NOALLOC	0x02
54
55void arm_physmem_hardware_region(uint64_t pa, uint64_t sz);
56void arm_physmem_exclude_region(vm_paddr_t pa, vm_size_t sz, uint32_t flags);
57void arm_physmem_init_kernel_globals(void);
58void arm_physmem_print_tables(void);
59
60/*
61 * Convenience routines for FDT.
62 */
63
64#ifdef FDT
65
66#include <machine/ofw_machdep.h>
67
68static inline void
69arm_physmem_hardware_regions(struct mem_region * mrptr, int mrcount)
70{
71	while (mrcount--) {
72		arm_physmem_hardware_region(mrptr->mr_start, mrptr->mr_size);
73		++mrptr;
74	}
75}
76
77static inline void
78arm_physmem_exclude_regions(struct mem_region * mrptr, int mrcount,
79    uint32_t exflags)
80{
81	while (mrcount--) {
82		arm_physmem_exclude_region(mrptr->mr_start, mrptr->mr_size,
83		    exflags);
84		++mrptr;
85	}
86}
87
88#endif /* FDT */
89
90#endif
91
92