0,0 → 1,88 |
/* |
* Copyright (C) 2006 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 ppc32mm |
* @{ |
*/ |
/** @file |
*/ |
|
#include <arch/mm/as.h> |
#include <genarch/mm/as_pt.h> |
#include <genarch/mm/asid_fifo.h> |
#include <arch.h> |
|
/** Architecture dependent address space init. */ |
void as_arch_init(void) |
{ |
as_operations = &as_pt_operations; |
asid_fifo_init(); |
} |
|
/** Install address space. |
* |
* Install ASID. |
* |
* @param as Address space structure. |
* |
*/ |
void as_install_arch(as_t *as) |
{ |
asid_t asid; |
ipl_t ipl; |
uint32_t sr; |
|
ipl = interrupts_disable(); |
spinlock_lock(&as->lock); |
|
asid = as->asid; |
|
/* Lower 2 GB, user and supervisor access */ |
for (sr = 0; sr < 8; sr++) { |
asm volatile ( |
"mtsrin %0, %1\n" |
: |
: "r" ((0x6000 << 16) + (asid << 4) + sr), "r" (sr << 28) |
); |
} |
|
/* Upper 2 GB, only supervisor access */ |
for (sr = 8; sr < 16; sr++) { |
asm volatile ( |
"mtsrin %0, %1\n" |
: |
: "r" ((0x4000 << 16) + (asid << 4) + sr), "r" (sr << 28) |
); |
} |
|
spinlock_unlock(&as->lock); |
interrupts_restore(ipl); |
} |
|
/** @} |
*/ |