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author | Dan Handley <dan.handley@arm.com> | 2014-05-16 14:08:45 +0100 |
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committer | Achin Gupta <achin.gupta@arm.com> | 2014-05-23 18:02:01 +0100 |
commit | dff8e47a4b6797e862a20559d34a9e2a056ab6e1 (patch) | |
tree | fd45dd2d800a38803adf375243ba11261e9bbecd /plat/common/aarch64 | |
parent | 17a387ad5af5beacd8406f3f35cbf697e4ac3698 (diff) | |
download | arm-trusted-firmware-dff8e47a4b6797e862a20559d34a9e2a056ab6e1.tar.gz |
Add enable mmu platform porting interfaces
Previously, the enable_mmu_elX() functions were implicitly part of
the platform porting layer since they were included by generic
code. These functions have been placed behind 2 new platform
functions, bl31_plat_enable_mmu() and bl32_plat_enable_mmu().
These are weakly defined so that they can be optionally overridden
by platform ports.
Also, the enable_mmu_elX() functions have been moved to
lib/aarch64/xlat_tables.c for optional re-use by platform ports.
These functions are tightly coupled with the translation table
initialization code.
Fixes ARM-software/tf-issues#152
Change-Id: I0a2251ce76acfa3c27541f832a9efaa49135cc1c
Diffstat (limited to 'plat/common/aarch64')
-rw-r--r-- | plat/common/aarch64/plat_common.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/plat/common/aarch64/plat_common.c b/plat/common/aarch64/plat_common.c new file mode 100644 index 000000000..2abf29d97 --- /dev/null +++ b/plat/common/aarch64/plat_common.c @@ -0,0 +1,49 @@ +/* + * Copyright (c) 2014, ARM Limited and Contributors. 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. + * + * Neither the name of ARM nor the names of its contributors may be used + * to endorse or promote products derived from this software without specific + * prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER OR CONTRIBUTORS 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 <xlat_tables.h> + +/* + * The following 2 platform setup functions are weakly defined. They + * provide typical implementations that may be re-used by multiple + * platforms but may also be overridden by a platform if required. + */ +#pragma weak bl31_plat_enable_mmu +#pragma weak bl32_plat_enable_mmu + +void bl31_plat_enable_mmu() +{ + enable_mmu_el3(); +} + +void bl32_plat_enable_mmu() +{ + enable_mmu_el1(); +} |