[coldfire]: 2.6.31 support (WiP)

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@24087 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 114 insertions, 0 deletions

diff --git a/target/linux/coldfire/files-2.6.31/arch/m68k/include/asm/cfcache.h b/target/linux/coldfire/files-2.6.31/arch/m68k/include/asm/cfcache.h
new file mode 100644
index 000000000..730ee9777
--- /dev/null
+++ b/target/linux/coldfire/files-2.6.31/arch/m68k/include/asm/cfcache.h
@@ -0,0 +1,114 @@
+/*
+ * include/asm-m68k/cfcache.h - Coldfire Cache Controller
+ *
+ * Kurt Mahan kmahan@freescale.com
+ *
+ * Copyright Freescale Semiconductor, Inc. 2007
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ */
+#ifndef CF_CFCACHE_H
+#define CF_CFCACHE_H
+
+/*
+ * CACR Cache Control Register
+ */
+#define CF_CACR_DEC         (0x80000000) /* Data Cache Enable                */
+#define CF_CACR_DW          (0x40000000) /* Data default Write-protect       */
+#define CF_CACR_DESB        (0x20000000) /* Data Enable Store Buffer         */
+#define CF_CACR_DPI         (0x10000000) /* Data Disable CPUSHL Invalidate   */
+#define CF_CACR_DHLCK       (0x08000000) /* 1/2 Data Cache Lock Mode         */
+#define CF_CACR_DDCM_00     (0x00000000) /* Cacheable writethrough imprecise */
+#define CF_CACR_DDCM_01     (0x02000000) /* Cacheable copyback               */
+#define CF_CACR_DDCM_10     (0x04000000) /* Noncacheable precise             */
+#define CF_CACR_DDCM_11     (0x06000000) /* Noncacheable imprecise           */
+#define CF_CACR_DCINVA      (0x01000000) /* Data Cache Invalidate All        */
+#define CF_CACR_DDSP        (0x00800000) /* Data default supervisor-protect  */
+#define CF_CACR_IVO         (0x00100000) /* Invalidate only                  */
+#define CF_CACR_BEC         (0x00080000) /* Branch Cache Enable              */
+#define CF_CACR_BCINVA      (0x00040000) /* Branch Cache Invalidate All      */
+#define CF_CACR_IEC         (0x00008000) /* Instruction Cache Enable         */
+#define CF_CACR_SPA         (0x00004000) /* Search by Physical Address       */
+#define CF_CACR_DNFB        (0x00002000) /* Default cache-inhibited fill buf */
+#define CF_CACR_IDPI        (0x00001000) /* Instr Disable CPUSHL Invalidate  */
+#define CF_CACR_IHLCK       (0x00000800) /* 1/2 Instruction Cache Lock Mode  */
+#define CF_CACR_IDCM        (0x00000400) /* Noncacheable Instr default mode  */
+#define CF_CACR_ICINVA      (0x00000100) /* Instr Cache Invalidate All       */
+#define CF_CACR_IDSP	    (0x00000080) /* Ins default supervisor-protect   */
+#define CF_CACR_EUSP        (0x00000020) /* Switch stacks in user mode       */
+
+#ifdef CONFIG_M5445X
+/*
+ * M5445x Cache Configuration
+ *	- cache line size is 16 bytes
+ *	- cache is 4-way set associative
+ *	- each cache has 256 sets (64k / 16bytes / 4way)
+ *	- I-Cache size is 16KB
+ *	- D-Cache size is 16KB
+ */
+#define ICACHE_SIZE 0x4000		/* instruction - 16k */
+#define DCACHE_SIZE 0x4000		/* data - 16k */
+
+#define CACHE_LINE_SIZE 0x0010		/* 16 bytes */
+#define CACHE_SETS 0x0100		/* 256 sets */
+#define CACHE_WAYS 0x0004		/* 4 way */
+
+#define CACHE_DISABLE_MODE	(CF_CACR_DCINVA+	\
+				 CF_CACR_BCINVA+	\
+				 CF_CACR_ICINVA)
+
+#ifndef CONFIG_M5445X_DISABLE_CACHE
+#define CACHE_INITIAL_MODE 	(CF_CACR_DEC+		\
+				 CF_CACR_BEC+		\
+				 CF_CACR_IEC+		\
+				 CF_CACR_DESB+		\
+				 CF_CACR_EUSP)
+#else
+/* cache disabled for testing */
+#define CACHE_INITIAL_MODE 	(CF_CACR_EUSP)
+#endif /* CONFIG_M5445X_DISABLE_CACHE */
+
+#elif defined(CONFIG_M547X_8X)
+/*
+ *  * M547x/M548x Cache Configuration
+ *   *      - cache line size is 16 bytes
+ *    *      - cache is 4-way set associative
+ *     *      - each cache has 512 sets (128k / 16bytes / 4way)
+ *      *      - I-Cache size is 32KB
+ *       *      - D-Cache size is 32KB
+ *        */
+#define ICACHE_SIZE 0x8000              /* instruction - 32k */
+#define DCACHE_SIZE 0x8000              /* data - 32k */
+
+#define CACHE_LINE_SIZE 0x0010          /* 16 bytes */
+#define CACHE_SETS 0x0200               /* 512 sets */
+#define CACHE_WAYS 0x0004               /* 4 way */
+
+/* in for the old cpushl caching code */
+#define _DCACHE_SET_MASK ((DCACHE_SIZE/64-1)<<CACHE_WAYS)
+#define _ICACHE_SET_MASK ((ICACHE_SIZE/64-1)<<CACHE_WAYS)
+#define LAST_DCACHE_ADDR _DCACHE_SET_MASK
+#define LAST_ICACHE_ADDR _ICACHE_SET_MASK
+
+#define CACHE_DISABLE_MODE      (CF_CACR_DCINVA+        \
+					CF_CACR_BCINVA+        \
+					CF_CACR_ICINVA)
+
+#define CACHE_INITIAL_MODE      (CF_CACR_DEC+           \
+					CF_CACR_BEC+           \
+					CF_CACR_IEC+           \
+					CF_CACR_DESB+          \
+					CF_CACR_EUSP)
+#endif /* CONFIG_M547X_8X */
+
+#ifndef __ASSEMBLY__
+
+extern unsigned long shadow_cacr;
+extern void cacr_set(unsigned long x);
+
+#endif /* !__ASSEMBLY__ */
+
+#endif /* CF_CACHE_H */