/*
* 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)
{
aux_printf("page_arch_init\n");
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
asm volatile (
"ldr r0, =0x55555555 \n"
"mrc p15, 0, r0, c3, c0, 0 \n" //set domain acces rights to client <==> take rights from page tables
"mcr p15, 0, r0, c1, c0, 0 \n" // get current setting of system ... register 1 isn't only for memmory management
"ldr r1, =0xFFFFFE8D \n" // mask to disable aligment checks, System, Rom bit disable
"and r0, r0, r1 \n"
"ldr r1, =0x00000001 \n" // mask to enable paging
"orr r0, r0, r1 \n"
"mrc p15, 0, r0, c1, c0, 0 \n" // store setting
:
:
: "r0", "r1"
);
}
/** Map device into kernel space. */
uintptr_t hw_map(uintptr_t physaddr, size_t size)
{
/* TODO */
return NULL;
}
/** @}
*/