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authorDaisuke Nojiri <dnojiri@chromium.org>2014-10-23 12:39:11 -0700
committerPatrick Georgi <pgeorgi@google.com>2015-04-10 07:42:25 +0200
commitaf3b2a1873f20cbffb2cf3b585d5020dc1e594fc (patch)
tree0503c12e7c6f3e28dc1987341ffd568b26d99529 /src
parent37083903ff94510bc8f656d3b596efcf5225b8c5 (diff)
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 <dnojiri@chromium.org> Change-Id: I23415b273c90401cd81f2bc94b2d69958f134c6a Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: 960453bf5d5fbf7dc75343b1cccaa62b6b8ec30c Original-Change-Id: Ief0c8a949e7e14d68473e7a093a8642d6058ccc6 Original-Reviewed-on: https://chromium-review.googlesource.com/225206 Original-Commit-Queue: Daisuke Nojiri <dnojiri@chromium.org> Original-Tested-by: Daisuke Nojiri <dnojiri@chromium.org> Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/9383 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Diffstat (limited to 'src')
-rw-r--r--src/arch/arm/armv7/Makefile.inc3
-rw-r--r--src/arch/arm/armv7/cache_m.c79
2 files changed, 81 insertions, 1 deletions
diff --git a/src/arch/arm/armv7/Makefile.inc b/src/arch/arm/armv7/Makefile.inc
index 951118a2d7..ab7f554bf3 100644
--- a/src/arch/arm/armv7/Makefile.inc
+++ b/src/arch/arm/armv7/Makefile.inc
@@ -52,8 +52,9 @@ bootblock-S-ccopts += $(armv7-m_asm_flags)
ifneq ($(CONFIG_ARM_BOOTBLOCK_CUSTOM),y)
bootblock-y += bootblock_simple.c
-bootblock-y += exception_m.c
endif
+bootblock-y += exception_m.c
+bootblock-y += cache_m.c
endif # CONFIG_ARCH_BOOTBLOCK_ARMV7
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 <stdint.h>
+
+#include <arch/cache.h>
+
+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)
+{
+}