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Rev	Author	Line No.	Line
2128	jermar	1	/*
2241	kebrt	2	* Copyright (c) 2007 Pavel Jancik, Michal Kebrt
2128	jermar	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	*
		9	* - Redistributions of source code must retain the above copyright
		10	* notice, this list of conditions and the following disclaimer.
		11	* - Redistributions in binary form must reproduce the above copyright
		12	* notice, this list of conditions and the following disclaimer in the
		13	* documentation and/or other materials provided with the distribution.
		14	* - The name of the author may not be used to endorse or promote products
		15	* derived from this software without specific prior written permission.
		16	*
		17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
		18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
		19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
		20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
		21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
		22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
		23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
		24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
		25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
		26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
		27	*/
		28
		29	/** @addtogroup arm32
		30	* @{
		31	*/
		32	/** @file
		33	*/
		34
		35	#ifndef KERN_arm32_TYPES_H_
		36	#define KERN_arm32_TYPES_H_
		37
		38	#define NULL 0
		39	#define false 0
		40	#define true 1
		41
		42	typedef signed char int8_t;
		43	typedef signed short int16_t;
		44	typedef signed long int32_t;
		45	typedef signed long long int64_t;
		46
		47	typedef unsigned char uint8_t;
		48	typedef unsigned short uint16_t;
		49	typedef unsigned long uint32_t;
		50	typedef unsigned long long uint64_t;
		51
		52	typedef uint32_t size_t;
		53	typedef uint32_t count_t;
		54	typedef uint32_t index_t;
		55
		56	typedef uint32_t uintptr_t;
		57	typedef uint32_t pfn_t;
		58
		59	typedef uint32_t ipl_t;
		60
		61	typedef uint32_t unative_t;
		62	typedef int32_t native_t;
		63
		64	typedef uint8_t bool;
		65	typedef uint64_t task_id_t;
		66	typedef uint32_t context_id_t;
		67
		68	typedef int32_t inr_t;
		69	typedef int32_t devno_t;
		70
2241	kebrt	71	/** Page table entry.
		72	*
		73	* We have different structs for level 0 and level 1 page table entries.
		74	* */
2128	jermar	75	typedef struct {
2147	jancik	76	unsigned dummy : 32;
2128	jermar	77	} pte_t;
		78
2241	kebrt	79	/** Level 0 page table entry. */
2147	jancik	80	typedef struct {
2241	kebrt	81	/* 01b for coarse tables, see below for details */
2149	jancik	82	unsigned descriptor_type : 2;
2241	kebrt	83	unsigned impl_specific : 3;
2147	jancik	84	unsigned domain : 4;
2149	jancik	85	unsigned should_be_zero : 1;
2241	kebrt	86	/* Pointer to the coarse 2nd level page table (holding entries for small (4KB)
		87	* or large (64KB) pages. ARM also supports fine 2nd level page tables that
		88	* may hold even tiny pages (1KB) but they are bigger (4KB per table in comparison
		89	* with 1KB per the coarse table)
		90	*/
2147	jancik	91	unsigned coarse_table_addr : 22;
		92	} __attribute__ ((packed)) pte_level0_t;
		93
2241	kebrt	94	/** Level 1 page table entry (small (4KB) pages used) */
2147	jancik	95	typedef struct {
2241	kebrt	96	/* 0b10 for small pages */
2149	jancik	97	unsigned descriptor_type : 2;
2147	jancik	98	unsigned bufferable : 1;
		99	unsigned cacheable : 1;
2241	kebrt	100	/* access permissions for each of 4 subparts of a page
		101	* (for each 1KB when small pages used */
2147	jancik	102	unsigned access_permission_0 : 2;
		103	unsigned access_permission_1 : 2;
		104	unsigned access_permission_2 : 2;
		105	unsigned access_permission_3 : 2;
		106	unsigned frame_base_addr : 20;
2149	jancik	107	} __attribute__ ((packed)) pte_level1_t;
2147	jancik	108
2241	kebrt	109
		110	/* Level 1 page tables access permissions */
		111
		112	/** User mode: no access, privileged mode: no access */
2147	jancik	113	#define pte_ap_user_no_kernel_no 0
2241	kebrt	114	/** User mode: no access, privileged mode: read/write */
2147	jancik	115	#define pte_ap_user_no_kernel_rw 1
2241	kebrt	116	/** User mode: read only, privileged mode: read/write */
2147	jancik	117	#define pte_ap_user_ro_kernel_rw 2
2241	kebrt	118	/// User mode: read/write, privileged mode: read/write
		119	#define pte_ap_user_rw_kernel_rw 3
2147	jancik	120
2241	kebrt	121
		122	/* pte_level0_t and pte_level1_t descriptor_type flags */
		123
		124	/** pte_level0_t and pte_level1_t "not present" flag (used in descriptor_type) */
		125	#define pte_descriptor_not_preset 0
		126	/** pte_level0_t coarse page table flag (used in descriptor_type) */
2147	jancik	127	#define pte_descriptor_coarse_table 1
2241	kebrt	128	/** pte_level1_t small page table flag (used in descriptor type) */
		129	#define pte_descriptor_small_page 2
2147	jancik	130
2241	kebrt	131
2128	jermar	132	#endif
		133
		134	/** @}
		135	*/

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