1 files changed, 58 insertions, 0 deletions
diff --git a/arch/arm/mach-sa1100/include/mach/debug-macro.S b/arch/arm/mach-sa1100/include/mach/debug-macro.S
new file mode 100644
index 0000000..1f0634d
--- /dev/null
+++ b/arch/arm/mach-sa1100/include/mach/debug-macro.S
@@ -0,0 +1,58 @@
+/* arch/arm/mach-sa1100/include/mach/debug-macro.S
+ *
+ * Debugging macro include header
+ *
+ *  Copyright (C) 1994-1999 Russell King
+ *  Moved from linux/arch/arm/kernel/debug.S by Ben Dooks
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+*/
+#include <mach/hardware.h>
+
+		.macro	addruart,rx
+		mrc	p15, 0, \rx, c1, c0
+		tst	\rx, #1			@ MMU enabled?
+		moveq	\rx, #0x80000000	@ physical base address
+		movne	\rx, #0xf8000000	@ virtual address
+
+		@ We probe for the active serial port here, coherently with
+		@ the comment in arch/arm/mach-sa1100/include/mach/uncompress.h.
+		@ We assume r1 can be clobbered.
+
+		@ see if Ser3 is active
+		add	\rx, \rx, #0x00050000
+		ldr	r1, [\rx, #UTCR3]
+		tst	r1, #UTCR3_TXE
+
+		@ if Ser3 is inactive, then try Ser1
+		addeq	\rx, \rx, #(0x00010000 - 0x00050000)
+		ldreq	r1, [\rx, #UTCR3]
+		tsteq	r1, #UTCR3_TXE
+
+		@ if Ser1 is inactive, then try Ser2
+		addeq	\rx, \rx, #(0x00030000 - 0x00010000)
+		ldreq	r1, [\rx, #UTCR3]
+		tsteq	r1, #UTCR3_TXE
+
+		@ if all ports are inactive, then there is nothing we can do
+		moveq	pc, lr
+		.endm
+
+		.macro	senduart,rd,rx
+		str	\rd, [\rx, #UTDR]
+		.endm
+
+		.macro	waituart,rd,rx
+1001:		ldr	\rd, [\rx, #UTSR1]
+		tst	\rd, #UTSR1_TNF
+		beq	1001b
+		.endm
+
+		.macro	busyuart,rd,rx
+1001:		ldr	\rd, [\rx, #UTSR1]
+		tst	\rd, #UTSR1_TBY
+		bne	1001b
+		.endm