From 960453bf5d5fbf7dc75343b1cccaa62b6b8ec30c Mon Sep 17 00:00:00 2001 From: Daisuke Nojiri Date: Thu, 23 Oct 2014 12:39:11 -0700 Subject: [PATCH] armv7-m: add empty cache routines armv7-m does not have cache but adding empty cache functions allow us to transparently use code handling entering and leaving stages. BUG=none BRANCH=ToT TEST=Built coreboot for cosmos Signed-off-by: Daisuke Nojiri Change-Id: Ief0c8a949e7e14d68473e7a093a8642d6058ccc6 Reviewed-on: https://chromium-review.googlesource.com/225206 Commit-Queue: Daisuke Nojiri Tested-by: Daisuke Nojiri Reviewed-by: Aaron Durbin --- src/arch/arm/armv7/Makefile.inc | 1 + src/arch/arm/armv7/cache_m.c | 79 +++++++++++++++++++++++++++++++++ 2 files changed, 80 insertions(+) create mode 100644 src/arch/arm/armv7/cache_m.c diff --git a/src/arch/arm/armv7/Makefile.inc b/src/arch/arm/armv7/Makefile.inc index 15709f3e9c..6d583ec3ce 100644 --- a/src/arch/arm/armv7/Makefile.inc +++ b/src/arch/arm/armv7/Makefile.inc @@ -53,6 +53,7 @@ bootblock-y += bootblock_m.S bootblock-y += bootblock_simple.c endif bootblock-y += exception_m.c +bootblock-y += cache_m.c endif diff --git a/src/arch/arm/armv7/cache_m.c b/src/arch/arm/armv7/cache_m.c new file mode 100644 index 0000000000..ec8a970167 --- /dev/null +++ b/src/arch/arm/armv7/cache_m.c @@ -0,0 +1,79 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2014 Google Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. 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. + * 3. 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 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 AUTHOR 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. + * + * cache.c: Cache maintenance routines for ARMv7-M + */ + +#include + +#include + +void tlb_invalidate_all(void) +{ +} + +void dcache_clean_all(void) +{ +} + +void dcache_clean_invalidate_all(void) +{ +} + +void dcache_invalidate_all(void) +{ +} + +unsigned int dcache_line_bytes(void) +{ + return 0; +} + +void dcache_clean_by_mva(void const *addr, size_t len) +{ +} + +void dcache_clean_invalidate_by_mva(void const *addr, size_t len) +{ +} + +void dcache_invalidate_by_mva(void const *addr, size_t len) +{ +} + +void dcache_mmu_disable(void) +{ +} + +void dcache_mmu_enable(void) +{ +} + +void cache_sync_instructions(void) +{ +}