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authorGreg Ungerer <gerg@uclinux.org>2011-03-06 21:53:28 +1000
committerGreg Ungerer <gerg@uclinux.org>2011-03-15 21:01:55 +1000
commitd4852a34e46679f0a36b7c8803eace2b9002cddc (patch)
tree31023b7b6a81ec743100a5cab54fec3be899925c
parentb195c47924ba3ff7434ab49412e5b2dab0a973fa (diff)
downloadop-kernel-dev-d4852a34e46679f0a36b7c8803eace2b9002cddc.zip
op-kernel-dev-d4852a34e46679f0a36b7c8803eace2b9002cddc.tar.gz
m68knommu: make ColdFire internal peripheral region configurable
Most ColdFire CPUs have an internal peripheral set that can be mapped at a user selectable address. Different ColdFire parts either use an MBAR register of an IPSBAR register to map the peripheral region. Most boards use the Freescale default mappings - but not all. Make the setting of the MBAR or IPSBAR register configurable. And only make the selection available on the appropriate ColdFire CPU types. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
-rw-r--r--arch/m68k/include/asm/coldfire.h15
-rw-r--r--arch/m68knommu/Kconfig40
2 files changed, 49 insertions, 6 deletions
diff --git a/arch/m68k/include/asm/coldfire.h b/arch/m68k/include/asm/coldfire.h
index f06a0a4..98d1d25 100644
--- a/arch/m68k/include/asm/coldfire.h
+++ b/arch/m68k/include/asm/coldfire.h
@@ -33,14 +33,17 @@
* the base address. Some have an IPSBAR register instead, and it
* has slightly different rules on its size and alignment. Some
* parts have fixed addresses and the internal peripherals cannot
- * be relocated in the address space.
+ * be relocated in the CPU address space.
*
- * This is generally setup by the boards start up code.
+ * The value of MBAR or IPSBAR is config time selectable, we no
+ * longer hard define it here. No MBAR or IPSBAR will be defined if
+ * this part has a fixed peripheral address map.
*/
-#if defined(CONFIG_M523x) || defined(CONFIG_M527x) || defined(CONFIG_M528x)
-#define MCF_IPSBAR 0x40000000
-#else
-#define MCF_MBAR 0x10000000
+#ifdef CONFIG_MBAR
+#define MCF_MBAR CONFIG_MBAR
+#endif
+#ifdef CONFIG_IPSBAR
+#define MCF_IPSBAR CONFIG_IPSBAR
#endif
/****************************************************************************/
diff --git a/arch/m68knommu/Kconfig b/arch/m68knommu/Kconfig
index 04c7d34..b597ce0 100644
--- a/arch/m68knommu/Kconfig
+++ b/arch/m68knommu/Kconfig
@@ -79,6 +79,12 @@ config HAVE_CACHE_SPLIT
config HAVE_CACHE_CB
bool
+config HAVE_MBAR
+ bool
+
+config HAVE_IPSBAR
+ bool
+
source "init/Kconfig"
source "kernel/Kconfig.freezer"
@@ -112,12 +118,14 @@ config M68360
config M5206
bool "MCF5206"
select COLDFIRE_SW_A7
+ select HAVE_MBAR
help
Motorola ColdFire 5206 processor support.
config M5206e
bool "MCF5206e"
select COLDFIRE_SW_A7
+ select HAVE_MBAR
help
Motorola ColdFire 5206e processor support.
@@ -132,30 +140,35 @@ config M523x
bool "MCF523x"
select GENERIC_CLOCKEVENTS
select HAVE_CACHE_SPLIT
+ select HAVE_IPSBAR
help
Freescale Coldfire 5230/1/2/4/5 processor support
config M5249
bool "MCF5249"
select COLDFIRE_SW_A7
+ select HAVE_MBAR
help
Motorola ColdFire 5249 processor support.
config M5271
bool "MCF5271"
select HAVE_CACHE_SPLIT
+ select HAVE_IPSBAR
help
Freescale (Motorola) ColdFire 5270/5271 processor support.
config M5272
bool "MCF5272"
select COLDFIRE_SW_A7
+ select HAVE_MBAR
help
Motorola ColdFire 5272 processor support.
config M5275
bool "MCF5275"
select HAVE_CACHE_SPLIT
+ select HAVE_IPSBAR
help
Freescale (Motorola) ColdFire 5274/5275 processor support.
@@ -163,6 +176,7 @@ config M528x
bool "MCF528x"
select GENERIC_CLOCKEVENTS
select HAVE_CACHE_SPLIT
+ select HAVE_IPSBAR
help
Motorola ColdFire 5280/5282 processor support.
@@ -170,6 +184,7 @@ config M5307
bool "MCF5307"
select COLDFIRE_SW_A7
select HAVE_CACHE_CB
+ select HAVE_MBAR
help
Motorola ColdFire 5307 processor support.
@@ -183,18 +198,21 @@ config M5407
bool "MCF5407"
select COLDFIRE_SW_A7
select HAVE_CACHE_CB
+ select HAVE_MBAR
help
Motorola ColdFire 5407 processor support.
config M547x
bool "MCF547x"
select HAVE_CACHE_CB
+ select HAVE_MBAR
help
Freescale ColdFire 5470/5471/5472/5473/5474/5475 processor support.
config M548x
bool "MCF548x"
select HAVE_CACHE_CB
+ select HAVE_MBAR
help
Freescale ColdFire 5480/5481/5482/5483/5484/5485 processor support.
@@ -650,6 +668,28 @@ config VECTORBASE
platforms this address is programmed into the VBR register, thus
actually setting the address to use.
+config MBAR
+ hex "Address of the MBAR (internal peripherals)"
+ default "0x10000000"
+ depends on HAVE_MBAR
+ help
+ Define the address of the internal system peripherals. This value
+ is set in the processors MBAR register. This is generally setup by
+ the boot loader, and will not be written by the kernel. By far most
+ ColdFire boards use the default 0x10000000 value, so if unsure then
+ use this.
+
+config IPSBAR
+ hex "Address of the IPSBAR (internal peripherals)"
+ default "0x40000000"
+ depends on HAVE_IPSBAR
+ help
+ Define the address of the internal system peripherals. This value
+ is set in the processors IPSBAR register. This is generally setup by
+ the boot loader, and will not be written by the kernel. By far most
+ ColdFire boards use the default 0x40000000 value, so if unsure then
+ use this.
+
config KERNELBASE
hex "Address of the base of kernel code"
default "0x400"
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