2 * Copyright (c) 2014 Ian Lepore <ian@freebsd.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
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12 * documentation and/or other materials provided with the distribution.
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17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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29 #ifndef _MACHINE_PHYSMEM_H_
30 #define _MACHINE_PHYSMEM_H_
33 * The physical address at which the kernel was loaded.
35 extern vm_paddr_t arm_physmem_kernaddr;
38 * Routines to help configure physical ram.
40 * Multiple regions of contiguous physical ram can be added (in any order).
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).
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.
52 #define EXFLAG_NODUMP 0x01
53 #define EXFLAG_NOALLOC 0x02
55 void arm_physmem_hardware_region(uint64_t pa, uint64_t sz);
56 void arm_physmem_exclude_region(vm_paddr_t pa, vm_size_t sz, uint32_t flags);
57 void arm_physmem_init_kernel_globals(void);
58 void arm_physmem_print_tables(void);
61 * Convenience routines for FDT.
66 #include <machine/ofw_machdep.h>
69 arm_physmem_hardware_regions(struct mem_region * mrptr, int mrcount)
72 arm_physmem_hardware_region(mrptr->mr_start, mrptr->mr_size);
78 arm_physmem_exclude_regions(struct mem_region * mrptr, int mrcount,
82 arm_physmem_exclude_region(mrptr->mr_start, mrptr->mr_size,