From 64f4ac28a612880a0dfb723e19bff7f06519be31 Mon Sep 17 00:00:00 2001
From: Sebastian Huber <sebastian.huber@embedded-brains.de>
Date: Mon, 24 Feb 2014 10:48:13 +0100
Subject: 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 deletion(-)
 create mode 100644 c/src/lib/libbsp/sparc/leon3/include/cache_.h

(limited to 'c/src/lib/libbsp')

diff --git a/c/src/lib/libbsp/sparc/leon3/Makefile.am b/c/src/lib/libbsp/sparc/leon3/Makefile.am
index a66da9be82..3c87e181ec 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 0000000000..eafbb48b31
--- /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@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 */
-- 
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