[rtems commit] bsp/leon3: Add new cache manager implementation

[Sebastian Huber]

Module:    rtems
Branch:    master
Commit:    64f4ac28a612880a0dfb723e19bff7f06519be31
Changeset: http://git.rtems.org/rtems/commit/?id=64f4ac28a612880a0dfb723e19bff7f06519be31

Author:    Sebastian Huber <sebastian.huber at embedded-brains.de>
Date:      Mon Feb 24 10:48:13 2014 +0100

bsp/leon3: Add new cache manager implementation

The previous implementation used an instruction cache line size of 0,
this is a bogus value.  Use a instruction cache line size of 64 since
the L2 cache may have a line size of 32 or 64.  A greater value should
cause no harm.

Use a FLUSH operation for _CPU_cache_invalidate_instruction_range().

This is a preperation step to support the L2 cache.

---

 c/src/lib/libbsp/sparc/leon3/Makefile.am      |    6 +-
 c/src/lib/libbsp/sparc/leon3/include/cache_.h |  109 +++++++++++++++++++++++++
 2 files changed, 114 insertions(+), 1 deletions(-)

diff --git a/c/src/lib/libbsp/sparc/leon3/Makefile.am b/c/src/lib/libbsp/sparc/leon3/Makefile.am
index a66da9b..3c87e18 100644
--- a/c/src/lib/libbsp/sparc/leon3/Makefile.am
+++ b/c/src/lib/libbsp/sparc/leon3/Makefile.am
@@ -117,6 +117,11 @@ libbsp_a_SOURCES += ../../sparc/shared/i2c/i2cmst.c
 # timer
 libbsp_a_SOURCES += timer/timer.c
 
+# Cache
+libbsp_a_SOURCES += ../../../libcpu/shared/src/cache_manager.c
+libbsp_a_SOURCES += include/cache_.h
+libbsp_a_CPPFLAGS = -I$(srcdir)/include
+
 if HAS_SMP
 libbsp_a_SOURCES += smp/getcpuid.c
 libbsp_a_SOURCES += smp/smp_leon3.c
@@ -155,7 +160,6 @@ endif
 
 libbsp_a_LIBADD = \
     ../../../libcpu/@RTEMS_CPU@/access.rel \
-    ../../../libcpu/@RTEMS_CPU@/cache.rel \
     ../../../libcpu/@RTEMS_CPU@/reg_win.rel \
     ../../../libcpu/@RTEMS_CPU@/syscall.rel
 
diff --git a/c/src/lib/libbsp/sparc/leon3/include/cache_.h b/c/src/lib/libbsp/sparc/leon3/include/cache_.h
new file mode 100644
index 0000000..eafbb48
--- /dev/null
+++ b/c/src/lib/libbsp/sparc/leon3/include/cache_.h
@@ -0,0 +1,109 @@
+/*
+ * Copyright (c) 2014 embedded brains GmbH.  All rights reserved.
+ *
+ *  embedded brains GmbH
+ *  Dornierstr. 4
+ *  82178 Puchheim
+ *  Germany
+ *  <rtems at embedded-brains.de>
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.com/license/LICENSE.
+ */
+
+#ifndef LEON3_CACHE_H
+#define LEON3_CACHE_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define CPU_CACHE_SUPPORT_PROVIDES_RANGE_FUNCTIONS
+
+#define CPU_INSTRUCTION_CACHE_ALIGNMENT 64
+
+static inline void _CPU_cache_flush_data_range(
+  const void *d_addr,
+  size_t n_bytes
+)
+{
+  /* TODO */
+}
+
+static inline void _CPU_cache_invalidate_data_range(
+  const void *d_addr,
+  size_t n_bytes
+)
+{
+  /* TODO */
+}
+
+static inline void _CPU_cache_freeze_data(void)
+{
+  /* TODO */
+}
+
+static inline void _CPU_cache_unfreeze_data(void)
+{
+  /* TODO */
+}
+
+static inline void _CPU_cache_invalidate_entire_instruction(void)
+{
+  __asm__ volatile ("flush");
+}
+
+static inline void _CPU_cache_invalidate_instruction_range(
+  const void *i_addr,
+  size_t n_bytes
+)
+{
+  _CPU_cache_invalidate_entire_instruction();
+}
+
+static inline void _CPU_cache_freeze_instruction(void)
+{
+  /* TODO */
+}
+
+static inline void _CPU_cache_unfreeze_instruction(void)
+{
+  /* TODO */
+}
+
+static inline void _CPU_cache_flush_entire_data(void)
+{
+  /* TODO */
+}
+
+static inline void _CPU_cache_invalidate_entire_data(void)
+{
+  /* TODO */
+}
+
+static inline void _CPU_cache_enable_data(void)
+{
+  /* TODO */
+}
+
+static inline void _CPU_cache_disable_data(void)
+{
+  /* TODO */
+}
+
+static inline void _CPU_cache_enable_instruction(void)
+{
+  /* TODO */
+}
+
+static inline void _CPU_cache_disable_instruction(void)
+{
+  /* TODO */
+}
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* LEON3_CACHE_H */