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