0,0 → 1,71 |
/* |
* Copyright (C) 2001-2004 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. |
*/ |
|
#include <arch/mm/page.h> |
#include <genarch/mm/page_pt.h> |
#include <arch/mm/frame.h> |
#include <mm/frame.h> |
#include <mm/page.h> |
#include <mm/as.h> |
#include <arch/types.h> |
#include <config.h> |
#include <func.h> |
#include <arch/interrupt.h> |
#include <arch/asm.h> |
#include <debug.h> |
#include <memstr.h> |
#include <print.h> |
#include <interrupt.h> |
|
void page_arch_init(void) |
{ |
__address cur; |
int flags; |
|
if (config.cpu_active == 1) { |
page_mapping_operations = &pt_mapping_operations; |
|
/* |
* PA2KA(identity) mapping for all frames until last_frame. |
*/ |
for (cur = 0; cur < last_frame; cur += FRAME_SIZE) { |
flags = PAGE_CACHEABLE; |
if ((PA2KA(cur) >= config.base) && (PA2KA(cur) < config.base + config.kernel_size)) |
flags |= PAGE_GLOBAL; |
page_mapping_insert(AS_KERNEL, PA2KA(cur), cur, flags); |
} |
|
exc_register(14, "page_fault", (iroutine) page_fault); |
write_cr3((__address) AS_KERNEL->page_table); |
} |
else { |
write_cr3((__address) AS_KERNEL->page_table); |
} |
|
paging_on(); |
} |