WebSVN – HelenOS – Diff – /branches/arm/kernel/arch/arm32/src/mm/page.c


/*
 * Copyright (c) 2003-2004 Jakub Jermar
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
/** @addtogroup arm32mm
 * @{
 */
/** @file
 */
 
#include <arch/mm/page.h>
#include <genarch/mm/page_pt.h>
#include <mm/page.h>
#include <align.h>
#include <config.h>
#include "../aux_print/printf.h"
 
void page_arch_init(void)
{
 
 
    uintptr_t cur;
    int flags;
 
    page_mapping_operations = &pt_mapping_operations;
 
    flags = PAGE_CACHEABLE;
    const unsigned maxmem = ALIGN_DOWN(config.memory_size, FRAME_SIZE);
   
    for (cur = 0; cur < maxmem; cur += FRAME_SIZE) {
    //  page_mapping_insert(AS_KERNEL, PA2KA(cur), cur, flags);
    }    
    //TODO set page fault routines
    // no problem no ... kernel doesn't do page faults
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
}
 
/** Map device into kernel space. */
uintptr_t hw_map(uintptr_t physaddr, size_t size)
{
    /* TODO */
    return NULL;
}
 
/** @}
 */
 
 

Rev 2182	Rev 2199
1	/*	1	/*
2	* Copyright (c) 2003-2004 Jakub Jermar	2	* Copyright (c) 2003-2004 Jakub Jermar
3	* All rights reserved.	3	* All rights reserved.
4	*	4	*
5	* Redistribution and use in source and binary forms, with or without	5	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions	6	* modification, are permitted provided that the following conditions
7	* are met:	7	* are met:
8	*	8	*
9	* - Redistributions of source code must retain the above copyright	9	* - Redistributions of source code must retain the above copyright
10	* notice, this list of conditions and the following disclaimer.	10	* notice, this list of conditions and the following disclaimer.
11	* - Redistributions in binary form must reproduce the above copyright	11	* - Redistributions in binary form must reproduce the above copyright
12	* notice, this list of conditions and the following disclaimer in the	12	* notice, this list of conditions and the following disclaimer in the
13	* documentation and/or other materials provided with the distribution.	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	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.	15	* derived from this software without specific prior written permission.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	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	18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	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	23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	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	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.	26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27	*/	27	*/
28		28
29	/** @addtogroup arm32mm	29	/** @addtogroup arm32mm
30	* @{	30	* @{
31	*/	31	*/
32	/** @file	32	/** @file
33	*/	33	*/
34		34
35	#include <arch/mm/page.h>	35	#include <arch/mm/page.h>
36	#include <genarch/mm/page_pt.h>	36	#include <genarch/mm/page_pt.h>
37	#include <mm/page.h>	37	#include <mm/page.h>
38	#include <align.h>	38	#include <align.h>
39	#include <config.h>	39	#include <config.h>
40	#include "../aux_print/printf.h"	40	#include "../aux_print/printf.h"
41		41
42	void page_arch_init(void)	42	void page_arch_init(void)
43	{	43	{
44	aux_printf("page_arch_init\n");	-
45		44
46	uintptr_t cur;	45	uintptr_t cur;
47	int flags;	46	int flags;
48		47
49	page_mapping_operations = &pt_mapping_operations;	48	page_mapping_operations = &pt_mapping_operations;
50		49
51	flags = PAGE_CACHEABLE;	50	flags = PAGE_CACHEABLE;
52	const unsigned maxmem = ALIGN_DOWN(config.memory_size, FRAME_SIZE);	51	const unsigned maxmem = ALIGN_DOWN(config.memory_size, FRAME_SIZE);
53		52
54	for (cur = 0; cur < maxmem; cur += FRAME_SIZE) {	53	for (cur = 0; cur < maxmem; cur += FRAME_SIZE) {
55	page_mapping_insert(AS_KERNEL, PA2KA(cur), cur, flags);	54	// page_mapping_insert(AS_KERNEL, PA2KA(cur), cur, flags);
56	}	55	}
57	//TODO set page fault routines	56	//TODO set page fault routines
58	// no problem no ... kernel doesn't do page faults	57	// no problem no ... kernel doesn't do page faults
59		58
60		-
61	asm volatile (	-
62	"ldr r0, =0x55555555 \n"	-
63	"mrc p15, 0, r0, c3, c0, 0 \n" //set domain acces rights to client <==> take rights from page tables	-
64	"mcr p15, 0, r0, c1, c0, 0 \n" // get current setting of system ... register 1 isn't only for memmory management	-
65	"ldr r1, =0xFFFFFE8D \n" // mask to disable aligment checks, System, Rom bit disable	-
66	"and r0, r0, r1 \n"	-
67	"ldr r1, =0x00000001 \n" // mask to enable paging	-
68	"orr r0, r0, r1 \n"	-
69	"mrc p15, 0, r0, c1, c0, 0 \n" // store setting	-
70	:	-
71	:	-
72	: "r0", "r1"	-
73	);	-
74	}	59	}
75		60
76	/** Map device into kernel space. */	61	/** Map device into kernel space. */
77	uintptr_t hw_map(uintptr_t physaddr, size_t size)	62	uintptr_t hw_map(uintptr_t physaddr, size_t size)
78	{	63	{
79	/* TODO */	64	/* TODO */
80	return NULL;	65	return NULL;
81	}	66	}
82		67
83	/** @}	68	/** @}
84	*/	69	*/
85		70
86		71

Subversion Repositories HelenOS

(root)/branches/arm/kernel/arch/arm32/src/mm/page.c @ 2199 – Rev 2182 → 2199