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Commit	Line	Data
	1	/*
	2	* Copyright (c) 2008 Apple Inc. All rights reserved.
	3	*
	4	* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
	5	*
	6	* This file contains Original Code and/or Modifications of Original Code
	7	* as defined in and that are subject to the Apple Public Source License
	8	* Version 2.0 (the 'License'). You may not use this file except in
	9	* compliance with the License. The rights granted to you under the License
	10	* may not be used to create, or enable the creation or redistribution of,
	11	* unlawful or unlicensed copies of an Apple operating system, or to
	12	* circumvent, violate, or enable the circumvention or violation of, any
	13	* terms of an Apple operating system software license agreement.
	14	*
	15	* Please obtain a copy of the License at
	16	* http://www.opensource.apple.com/apsl/ and read it before using this file.
	17	*
	18	* The Original Code and all software distributed under the License are
	19	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	20	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	21	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	22	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	23	* Please see the License for the specific language governing rights and
	24	* limitations under the License.
	25	*
	26	* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
	27	*/
	28	#include <i386/pmap.h>
	29	#include <i386/proc_reg.h>
	30	#include <IOKit/IOHibernatePrivate.h>
	31
	32	#include <i386/pal_hibernate.h>
	33
	34	extern pd_entry_t BootPTD[2048];
	35
	36	// src is virtually mapped, not page aligned,
	37	// dst is a physical 4k page aligned ptr, len is one 4K page
	38	// src & dst will not overlap
	39
	40	uintptr_t
	41	hibernate_restore_phys_page(uint64_t src, uint64_t dst, uint32_t len, uint32_t procFlags)
	42	{
	43	(void)procFlags;
	44	uint64_t * d;
	45	uint64_t * s;
	46
	47	if (src == 0)
	48	return (uintptr_t)dst;
	49
	50	d = (uint64_t *)pal_hib_map(DEST_COPY_AREA, dst);
	51	s = (uint64_t *) (uintptr_t)src;
	52
	53	memcpy(d, s, len);
	54
	55	return (uintptr_t)d;
	56	}
	57	#undef hibprintf
	58
	59	void hibprintf(const char *fmt, ...);
	60
	61	uintptr_t
	62	pal_hib_map(uintptr_t virt, uint64_t phys)
	63	{
	64	uintptr_t index;
	65
	66	switch (virt)
	67	{
	68	case DEST_COPY_AREA:
	69	case SRC_COPY_AREA:
	70	case COPY_PAGE_AREA:
	71	case BITMAP_AREA:
	72	case IMAGE_AREA:
	73	case IMAGE2_AREA:
	74	break;
	75
	76	default:
	77	asm("cli;hlt;");
	78	break;
	79	}
	80	if (phys < IMAGE2_AREA)
	81	{
	82	// first 4Gb is all mapped,
	83	// and do not expect source areas to cross 4Gb
	84	return (phys);
	85	}
	86	index = (virt >> I386_LPGSHIFT);
	87	virt += (uintptr_t)(phys & I386_LPGMASK);
	88	phys = ((phys & ~((uint64_t)I386_LPGMASK)) \| INTEL_PTE_PS \| INTEL_PTE_VALID \| INTEL_PTE_WRITE);
	89	if (phys == BootPTD[index]) return (virt);
	90	BootPTD[index] = phys;
	91	invlpg(virt);
	92	BootPTD[index + 1] = (phys + I386_LPGBYTES);
	93	invlpg(virt + I386_LPGBYTES);
	94
	95	return (virt);
	96	}
	97
	98	void hibernateRestorePALState(uint32_t *arg)
	99	{
	100	(void)arg;
	101	}
	102
	103	void
	104	pal_hib_patchup(void)
	105	{
	106	}