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>

1 files changed, 9 insertions, 6 deletions

diff --git a/arch/m68k/include/asm/coldfire.h b/arch/m68k/include/asm/coldfire.h
index f06a0a439129..98d1d25101f2 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
 
 /****************************************************************************/