From 5aa5b88404b2b3610d36a9626ec36dcc81194aa9 Mon Sep 17 00:00:00 2001
From: Mike Frysinger <vapier@gentoo.org>
Date: Wed, 12 Oct 2011 20:16:31 -0400
Subject: [PATCH] Blackfin: define CONFIG_SYS_CACHELINE_SIZE

Common U-Boot API wants this define, so import asm/cache.h from Linux
to provide suitable defines.

Acked-by: Anton Staaf <robotboy@chromium.org>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
---
 arch/blackfin/include/asm/blackfin_local.h |  1 +
 arch/blackfin/include/asm/cache.h          | 70 ++++++++++++++++++++++++++++++
 arch/blackfin/include/asm/config.h         |  3 ++
 3 files changed, 74 insertions(+)
 create mode 100644 arch/blackfin/include/asm/cache.h

diff --git a/arch/blackfin/include/asm/blackfin_local.h b/arch/blackfin/include/asm/blackfin_local.h
index 27034d3..71207b6 100644
--- a/arch/blackfin/include/asm/blackfin_local.h
+++ b/arch/blackfin/include/asm/blackfin_local.h
@@ -49,6 +49,7 @@
 #define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
 
 #include <asm/linkage.h>
+#include <asm/cache.h>
 
 #ifndef __ASSEMBLY__
 # ifdef SHARED_RESOURCES
diff --git a/arch/blackfin/include/asm/cache.h b/arch/blackfin/include/asm/cache.h
new file mode 100644
index 0000000..482e4b5
--- /dev/null
+++ b/arch/blackfin/include/asm/cache.h
@@ -0,0 +1,70 @@
+/*
+ * Copyright 2004-2009 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#ifndef __ARCH_BLACKFIN_CACHE_H
+#define __ARCH_BLACKFIN_CACHE_H
+
+#include <asm/linkage.h>	/* for asmlinkage */
+
+/*
+ * Bytes per L1 cache line
+ * Blackfin loads 32 bytes for cache
+ */
+#define L1_CACHE_SHIFT	5
+#define L1_CACHE_BYTES	(1 << L1_CACHE_SHIFT)
+#define SMP_CACHE_BYTES	L1_CACHE_BYTES
+
+#define ARCH_DMA_MINALIGN	L1_CACHE_BYTES
+
+#ifdef CONFIG_SMP
+#define __cacheline_aligned
+#else
+#define ____cacheline_aligned
+
+/*
+ * Put cacheline_aliged data to L1 data memory
+ */
+#ifdef CONFIG_CACHELINE_ALIGNED_L1
+#define __cacheline_aligned				\
+	  __attribute__((__aligned__(L1_CACHE_BYTES),	\
+		__section__(".data_l1.cacheline_aligned")))
+#endif
+
+#endif
+
+/*
+ * largest L1 which this arch supports
+ */
+#define L1_CACHE_SHIFT_MAX	5
+
+#if defined(CONFIG_SMP) && \
+    !defined(CONFIG_BFIN_CACHE_COHERENT)
+# if defined(CONFIG_BFIN_EXTMEM_ICACHEABLE) || defined(CONFIG_BFIN_L2_ICACHEABLE)
+# define __ARCH_SYNC_CORE_ICACHE
+# endif
+# if defined(CONFIG_BFIN_EXTMEM_DCACHEABLE) || defined(CONFIG_BFIN_L2_DCACHEABLE)
+# define __ARCH_SYNC_CORE_DCACHE
+# endif
+#ifndef __ASSEMBLY__
+asmlinkage void __raw_smp_mark_barrier_asm(void);
+asmlinkage void __raw_smp_check_barrier_asm(void);
+
+static inline void smp_mark_barrier(void)
+{
+	__raw_smp_mark_barrier_asm();
+}
+static inline void smp_check_barrier(void)
+{
+	__raw_smp_check_barrier_asm();
+}
+
+void resync_core_dcache(void);
+void resync_core_icache(void);
+#endif
+#endif
+
+
+#endif
diff --git a/arch/blackfin/include/asm/config.h b/arch/blackfin/include/asm/config.h
index 53af310..1a8de49 100644
--- a/arch/blackfin/include/asm/config.h
+++ b/arch/blackfin/include/asm/config.h
@@ -21,6 +21,9 @@
 # define CONFIG_BFIN_SCRATCH_REG retn
 #endif
 
+/* U-Boot wants this config name */
+#define CONFIG_SYS_CACHELINE_SIZE L1_CACHE_BYTES
+
 /* Make sure the structure is properly aligned */
 #if ((CONFIG_SYS_GBL_DATA_ADDR & -4) != CONFIG_SYS_GBL_DATA_ADDR)
 # error CONFIG_SYS_GBL_DATA_ADDR: must be 4 byte aligned