[ARM] Orion: distinguish between physical and virtual addresses

Hack up the Orion port to distinguish between virtual and physical
addresses of register windows.  This will allow moving virtual
mappings higher up in the address space, to free up more kernel
virtual address space.

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Signed-off-by: Nicolas Pitre <nico@marvell.com>

1 files changed, 7 insertions, 2 deletions

diff --git a/include/asm-arm/arch-orion/debug-macro.S b/include/asm-arm/arch-orion/debug-macro.S
index e2a80641f214..2746220f5d85 100644
--- a/include/asm-arm/arch-orion/debug-macro.S
+++ b/include/asm-arm/arch-orion/debug-macro.S
@@ -8,9 +8,14 @@
  * published by the Free Software Foundation.
 */
 
+#include <asm/arch/orion.h>
+
         .macro  addruart,rx
-        mov   \rx, #0xf1000000
-        orr   \rx, \rx, #0x00012000
+        mrc     p15, 0, \rx, c1, c0
+        tst     \rx, #1                                 @ MMU enabled?
+        ldreq   \rx, =ORION_REGS_PHYS_BASE
+        ldrne   \rx, =ORION_REGS_VIRT_BASE
+        orr     \rx, \rx, #0x00012000
         .endm
 
 #define UART_SHIFT      2