Merge branch 'master' of /home/shaggy/git/linus-clean/

1 files changed, 150 insertions, 0 deletions

diff --git a/arch/m68k/include/asm/mcfcache.h b/arch/m68k/include/asm/mcfcache.h
new file mode 100644
index 000000000000..c042634fadaa
--- /dev/null
+++ b/arch/m68k/include/asm/mcfcache.h
@@ -0,0 +1,150 @@
+/****************************************************************************/
+
+/*
+ *	mcfcache.h -- ColdFire CPU cache support code
+ *
+ *	(C) Copyright 2004, Greg Ungerer <gerg@snapgear.com>
+ */
+
+/****************************************************************************/
+#ifndef	__M68KNOMMU_MCFCACHE_H
+#define	__M68KNOMMU_MCFCACHE_H
+/****************************************************************************/
+
+
+/*
+ *	The different ColdFire families have different cache arrangments.
+ *	Everything from a small instruction only cache, to configurable
+ *	data and/or instruction cache, to unified instruction/data, to 
+ *	harvard style separate instruction and data caches.
+ */
+
+#if defined(CONFIG_M5206) || defined(CONFIG_M5206e) || defined(CONFIG_M5272)
+/*
+ *	Simple version 2 core cache. These have instruction cache only,
+ *	we just need to invalidate it and enable it.
+ */
+.macro CACHE_ENABLE
+	movel	#0x01000000,%d0		/* invalidate cache cmd */
+	movec	%d0,%CACR		/* do invalidate cache */
+	movel	#0x80000100,%d0		/* setup cache mask */
+	movec	%d0,%CACR		/* enable cache */
+.endm
+#endif /* CONFIG_M5206 || CONFIG_M5206e || CONFIG_M5272 */
+
+#if defined(CONFIG_M523x) || defined(CONFIG_M527x)
+/*
+ *	New version 2 cores have a configurable split cache arrangement.
+ *	For now I am just enabling instruction cache - but ultimately I
+ *	think a split instruction/data cache would be better.
+ */
+.macro CACHE_ENABLE
+	movel	#0x01400000,%d0
+	movec	%d0,%CACR		/* invalidate cache */
+	nop
+	movel	#0x0000c000,%d0		/* set SDRAM cached only */
+	movec	%d0,%ACR0
+	movel	#0x00000000,%d0		/* no other regions cached */
+	movec	%d0,%ACR1
+	movel	#0x80400100,%d0		/* configure cache */
+	movec	%d0,%CACR		/* enable cache */
+	nop
+.endm
+#endif /* CONFIG_M523x || CONFIG_M527x */
+
+#if defined(CONFIG_M528x)
+.macro CACHE_ENABLE
+	nop
+	movel	#0x01000000, %d0
+	movec	%d0, %CACR		/* Invalidate cache */
+	nop
+	movel	#0x0000c020, %d0	/* Set SDRAM cached only */
+	movec	%d0, %ACR0
+	movel	#0x00000000, %d0	/* No other regions cached */
+	movec	%d0, %ACR1
+	movel	#0x80000200, %d0	/* Setup cache mask */
+	movec	%d0, %CACR		/* Enable cache */
+	nop
+.endm
+#endif /* CONFIG_M528x */
+
+#if defined(CONFIG_M5249) || defined(CONFIG_M5307)
+/*
+ *	The version 3 core cache. Oddly enough the version 2 core 5249
+ *	has the same SDRAM and cache setup as the version 3 cores.
+ *	This is a single unified instruction/data cache.
+ */
+.macro CACHE_ENABLE
+	movel	#0x01000000,%d0		/* invalidate whole cache */
+	movec	%d0,%CACR
+	nop
+#if defined(DEBUGGER_COMPATIBLE_CACHE) || defined(CONFIG_SECUREEDGEMP3)
+	movel	#0x0000c000,%d0		/* set SDRAM cached (write-thru) */
+#else
+	movel	#0x0000c020,%d0		/* set SDRAM cached (copyback) */
+#endif
+	movec	%d0,%ACR0
+	movel	#0x00000000,%d0		/* no other regions cached */
+	movec	%d0,%ACR1
+	movel	#0xa0000200,%d0		/* enable cache */
+	movec	%d0,%CACR
+	nop
+.endm
+#endif /* CONFIG_M5249 || CONFIG_M5307 */
+
+#if defined(CONFIG_M532x)
+.macro CACHE_ENABLE
+	movel	#0x01000000,%d0		/* invalidate cache cmd */
+	movec	%d0,%CACR		/* do invalidate cache */
+	nop
+	movel	#0x4001C000,%d0		/* set SDRAM cached (write-thru) */
+	movec	%d0,%ACR0
+	movel	#0x00000000,%d0		/* no other regions cached */
+	movec	%d0,%ACR1
+	movel	#0x80000200,%d0		/* setup cache mask */
+	movec	%d0,%CACR		/* enable cache */
+	nop
+.endm
+#endif /* CONFIG_M532x */
+
+#if defined(CONFIG_M5407)
+/*
+ *	Version 4 cores have a true harvard style separate instruction
+ *	and data cache. Invalidate and enable cache, also enable write
+ *	buffers and branch accelerator.
+ */
+.macro CACHE_ENABLE
+	movel	#0x01040100,%d0		/* invalidate whole cache */
+	movec	%d0,%CACR
+	nop
+	movel	#0x000fc000,%d0		/* set SDRAM cached only */
+	movec	%d0, %ACR0
+	movel	#0x00000000,%d0		/* no other regions cached */
+	movec	%d0, %ACR1
+	movel	#0x000fc000,%d0		/* set SDRAM cached only */
+	movec	%d0, %ACR2
+	movel	#0x00000000,%d0		/* no other regions cached */
+	movec	%d0, %ACR3
+	movel	#0xb6088400,%d0		/* enable caches */
+	movec	%d0,%CACR
+	nop
+.endm
+#endif /* CONFIG_M5407 */
+
+#if defined(CONFIG_M520x)
+.macro CACHE_ENABLE
+	move.l	#0x01000000,%d0		/* invalidate whole cache */
+	movec	%d0,%CACR
+	nop
+	move.l	#0x0000c000,%d0		/* set SDRAM cached (write-thru) */
+	movec	%d0,%ACR0
+	move.l	#0x00000000,%d0		/* no other regions cached */
+	movec	%d0,%ACR1
+	move.l	#0x80400000,%d0		/* enable 8K instruction cache */
+	movec	%d0,%CACR
+	nop
+.endm
+#endif /* CONFIG_M520x */
+
+/****************************************************************************/
+#endif	/* __M68KNOMMU_MCFCACHE_H */