[PATCH 13/17] ARM: pl01x debug code endian fix

[Ben Dooks]

The PL01X debug code needs to take into account which endian mode the
processor is running in. If it is big-endian, ensure the data is swapped
appropriately.

Note, we could do this slightly more efficiently if we have an macro to
do the necessary swap for the bits used by test.

Signed-off-by: Ben Dooks <ben.dooks at codethink.co.uk>
---
 arch/arm/include/asm/hardware/debug-pl01x.S |    8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/arm/include/asm/hardware/debug-pl01x.S b/arch/arm/include/asm/hardware/debug-pl01x.S
index f9fd083..6f3a003 100644
--- a/arch/arm/include/asm/hardware/debug-pl01x.S
+++ b/arch/arm/include/asm/hardware/debug-pl01x.S
@@ -12,18 +12,26 @@
 */
 #include <linux/amba/serial.h>
 
+#ifdef __ARMEB__
+#define ARM_BE(x...) x
+#else
+#define ARM_BE(x..)
+#endif
+
 		.macro	senduart,rd,rx
 		strb	\rd, [\rx, #UART01x_DR]
 		.endm
 
 		.macro	waituart,rd,rx
 1001:		ldr	\rd, [\rx, #UART01x_FR]
+  ARM_BE(	rev	\rd, \rd )
 		tst	\rd, #UART01x_FR_TXFF
 		bne	1001b
 		.endm
 
 		.macro	busyuart,rd,rx
 1001:		ldr	\rd, [\rx, #UART01x_FR]
+  ARM_BE(	rev	\rd, \rd )
 		tst	\rd, #UART01x_FR_BUSY
 		bne	1001b
 		.endm
-- 
1.7.10.4