1e7b9e9e68
This allows, for example, UEFI pass a memory map with some ram in this region, but for us to ignore it. This is the case when running under the qemu virt machine type. Sponsored by: ABT Systems Ltd
92 lines
2.9 KiB
C
92 lines
2.9 KiB
C
/*-
|
|
* 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
|
|
|