[apple/xnu.git] / osfmk / x86_64 / boot_pt.c

/*
 * Copyright (c) 2011 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>

/*
 * These pagetables are used during early processor startup during
 * the transition from protected mode to 64-bit mode and the jump
 * to high kernel address space.
 *
 * They are required to be at the base of the kernel and specifically
 * the base of the special __HIB section.
 *
 * These tables are statically-defined as physical-zero-based.
 * Startup code in start.s rebases these according to the actual physical
 * base address. 
 */

/*
 * NB: This must be located at the kernel's base address!
 */
#define PML4_PROT (INTEL_PTE_VALID | INTEL_PTE_WRITE)
pml4_entry_t	BootPML4[PTE_PER_PAGE]
		__attribute__((section("__HIB, __bootPT"))) = {
	[0]			= ((uint64_t)(PAGE_SIZE) | PML4_PROT),
	[KERNEL_PML4_INDEX]	= ((uint64_t)(PAGE_SIZE) | PML4_PROT),
};

#define PDPT_PROT (INTEL_PTE_VALID | INTEL_PTE_WRITE)
pdpt_entry_t	BootPDPT[PTE_PER_PAGE]
		__attribute__((section("__HIB, __bootPT"))) = {
	[0]	= ((uint64_t)(2*PAGE_SIZE) | PDPT_PROT), 
	[1]	= ((uint64_t)(3*PAGE_SIZE) | PDPT_PROT), 
	[2]	= ((uint64_t)(4*PAGE_SIZE) | PDPT_PROT), 
	[3]	= ((uint64_t)(5*PAGE_SIZE) | PDPT_PROT), 
};

#if NPGPTD != 4
#error Please update boot_pt.c to reflect the new value of NPGPTD
#endif

#if MACHINE_BOOTSTRAPPTD

#define PDT_PROT (INTEL_PTE_PS | INTEL_PTE_VALID | INTEL_PTE_WRITE)
#define ID_MAP_2MEG(x)	[(x)] = ((((uint64_t)(x)) << 21) | (PDT_PROT)),

#define L0(x,n)	 x(n)
#define L1(x,n)	 L0(x,n-1)     L0(x,n)
#define L2(x,n)  L1(x,n-2)     L1(x,n)
#define L3(x,n)  L2(x,n-4)     L2(x,n)
#define L4(x,n)  L3(x,n-8)     L3(x,n)
#define L5(x,n)  L4(x,n-16)    L4(x,n)
#define L6(x,n)  L5(x,n-32)    L5(x,n)
#define L7(x,n)  L6(x,n-64)    L6(x,n)
#define L8(x,n)  L7(x,n-128)   L7(x,n)
#define L9(x,n)  L8(x,n-256)   L8(x,n)
#define L10(x,n) L9(x,n-512)   L9(x,n)
#define L11(x,n) L10(x,n-1024) L10(x,n)

#define FOR_0_TO_2047(x) L11(x,2047)

pd_entry_t	BootPTD[2048]
		__attribute__((section("__HIB, __bootPT"))) = {
	FOR_0_TO_2047(ID_MAP_2MEG)
};
#endif /* MACHINE_BOOTSTRAPPTD */
Commit	Line	Data
316670eb A	1	/*
	2	* Copyright (c) 2011 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
	30	/*
	31	* These pagetables are used during early processor startup during
	32	* the transition from protected mode to 64-bit mode and the jump
	33	* to high kernel address space.
	34	*
	35	* They are required to be at the base of the kernel and specifically
	36	* the base of the special __HIB section.
	37	*
	38	* These tables are statically-defined as physical-zero-based.
	39	* Startup code in start.s rebases these according to the actual physical
	40	* base address.
	41	*/
	42
	43	/*
	44	* NB: This must be located at the kernel's base address!
	45	*/
	46	#define PML4_PROT (INTEL_PTE_VALID \| INTEL_PTE_WRITE)
	47	pml4_entry_t BootPML4[PTE_PER_PAGE]
	48	__attribute__((section("__HIB, __bootPT"))) = {
	49	[0] = ((uint64_t)(PAGE_SIZE) \| PML4_PROT),
	50	[KERNEL_PML4_INDEX] = ((uint64_t)(PAGE_SIZE) \| PML4_PROT),
	51	};
	52
	53	#define PDPT_PROT (INTEL_PTE_VALID \| INTEL_PTE_WRITE)
	54	pdpt_entry_t BootPDPT[PTE_PER_PAGE]
	55	__attribute__((section("__HIB, __bootPT"))) = {
	56	[0] = ((uint64_t)(2*PAGE_SIZE) \| PDPT_PROT),
	57	[1] = ((uint64_t)(3*PAGE_SIZE) \| PDPT_PROT),
	58	[2] = ((uint64_t)(4*PAGE_SIZE) \| PDPT_PROT),
	59	[3] = ((uint64_t)(5*PAGE_SIZE) \| PDPT_PROT),
	60	};
	61
	62	#if NPGPTD != 4
	63	#error Please update boot_pt.c to reflect the new value of NPGPTD
	64	#endif
65
66	#if MACHINE_BOOTSTRAPPTD
67
68	#define PDT_PROT (INTEL_PTE_PS \| INTEL_PTE_VALID \| INTEL_PTE_WRITE)
69	#define ID_MAP_2MEG(x) [(x)] = ((((uint64_t)(x)) << 21) \| (PDT_PROT)),
70
71	#define L0(x,n) x(n)
72	#define L1(x,n) L0(x,n-1) L0(x,n)
73	#define L2(x,n) L1(x,n-2) L1(x,n)
74	#define L3(x,n) L2(x,n-4) L2(x,n)
75	#define L4(x,n) L3(x,n-8) L3(x,n)
76	#define L5(x,n) L4(x,n-16) L4(x,n)
77	#define L6(x,n) L5(x,n-32) L5(x,n)
78	#define L7(x,n) L6(x,n-64) L6(x,n)
79	#define L8(x,n) L7(x,n-128) L7(x,n)
80	#define L9(x,n) L8(x,n-256) L8(x,n)
81	#define L10(x,n) L9(x,n-512) L9(x,n)
82	#define L11(x,n) L10(x,n-1024) L10(x,n)
83
84	#define FOR_0_TO_2047(x) L11(x,2047)
85
86	pd_entry_t BootPTD[2048]
87	__attribute__((section("__HIB, __bootPT"))) = {
88	FOR_0_TO_2047(ID_MAP_2MEG)
89	};
90	#endif /* MACHINE_BOOTSTRAPPTD */