/* * Copyright (c) 2008 Apple Inc. All rights reserved. * * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. The rights granted to you under the License * may not be used to create, or enable the creation or redistribution of, * unlawful or unlicensed copies of an Apple operating system, or to * circumvent, violate, or enable the circumvention or violation of, any * terms of an Apple operating system software license agreement. * * Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ #include <i386/pmap.h> #include <i386/proc_reg.h> #include <IOKit/IOHibernatePrivate.h> extern pd_entry_t BootstrapPTD[2048]; #define TWO_MEG_MASK 0xFFFFFFFFFFE00000ULL #define DST_INDEX 2047UL static char *dstPtr = (char *)(DST_INDEX << PDSHIFT); // src is virtually mapped, not page aligned, // dst is a physical 4k page aligned ptr, len is one 4K page // src & dst will not overlap void hibernate_restore_phys_page(uint64_t src, uint64_t dst, uint32_t len, uint32_t procFlags) { (void)procFlags; uint64_t * d; uint64_t * s; uint32_t idx; if (src == 0) return; if (dst < (uint64_t) (uintptr_t)dstPtr) { d = (uint64_t *) (uintptr_t)dst; } else { /* Outside 1-1 4G map so set up the mappings for the dest page using 2MB pages */ BootstrapPTD[DST_INDEX] = (dst & TWO_MEG_MASK) | INTEL_PTE_PS | INTEL_PTE_VALID | INTEL_PTE_WRITE | INTEL_PTE_WRITE; /* Invalidate the page tables for this */ invlpg((uintptr_t) dstPtr); /* Mask off the offset from the 2MB window */ dst &= ~TWO_MEG_MASK; d = (uint64_t *) (dstPtr + dst); } s = (uint64_t *) (uintptr_t)src; for (idx = 0; idx < (len / (uint32_t)sizeof(uint64_t)); idx++) d[idx] = s[idx]; }