9f1a80706c
the DMAP region on arm64. We already have the needed information to build these tables, we just need to extract it. This significantly simplifies the code. Obtained from: ABT Systems Ltd Sponsored by: Turing Robotic Industries
95 lines
3.0 KiB
C
95 lines
3.0 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2014 Ian Lepore <ian@freebsd.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _MACHINE_PHYSMEM_H_
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#define _MACHINE_PHYSMEM_H_
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/*
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* The physical address at which the kernel was loaded.
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*/
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extern vm_paddr_t arm_physmem_kernaddr;
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/*
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* Routines to help configure physical ram.
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*
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* Multiple regions of contiguous physical ram can be added (in any order).
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*
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* Multiple regions of physical ram that should be excluded from crash dumps, or
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* memory allocation, or both, can be added (in any order).
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*
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* After all early kernel init is done and it's time to configure all
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* remainining non-excluded physical ram for use by other parts of the kernel,
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* arm_physmem_init_kernel_globals() processes the hardware regions and
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* exclusion regions to generate the global dump_avail and phys_avail arrays
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* that communicate physical ram configuration to other parts of the kernel.
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*/
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#define EXFLAG_NODUMP 0x01
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#define EXFLAG_NOALLOC 0x02
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void arm_physmem_hardware_region(uint64_t pa, uint64_t sz);
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void arm_physmem_exclude_region(vm_paddr_t pa, vm_size_t sz, uint32_t flags);
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size_t arm_physmem_avail(vm_paddr_t *avail, size_t maxavail);
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void arm_physmem_init_kernel_globals(void);
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void arm_physmem_print_tables(void);
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/*
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* Convenience routines for FDT.
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*/
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#ifdef FDT
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#include <machine/ofw_machdep.h>
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static inline void
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arm_physmem_hardware_regions(struct mem_region * mrptr, int mrcount)
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{
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while (mrcount--) {
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arm_physmem_hardware_region(mrptr->mr_start, mrptr->mr_size);
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++mrptr;
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}
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}
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static inline void
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arm_physmem_exclude_regions(struct mem_region * mrptr, int mrcount,
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uint32_t exflags)
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{
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while (mrcount--) {
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arm_physmem_exclude_region(mrptr->mr_start, mrptr->mr_size,
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exflags);
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++mrptr;
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}
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}
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#endif /* FDT */
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#endif
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