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