From 4bc256501a159abc7e9fee43f63c68894f6a11d8 Mon Sep 17 00:00:00 2001
From: Sascha Hauer <s.hauer@pengutronix.de>
Date: Sat, 5 Jul 2008 10:02:51 +0200
Subject: [PATCH] MXC: add debug-macro.S for mxc

This patch adds debug-macro.S for arch-mxc

Disadvantage: Due to the board specific UART definition, these macros (and
compile time) will fail for multi board kernels.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 include/asm-arm/arch-mxc/board-mx31ads.h |  5 ++++
 include/asm-arm/arch-mxc/debug-macro.S   | 38 ++++++++++++++++++++++++
 2 files changed, 43 insertions(+)
 create mode 100644 include/asm-arm/arch-mxc/debug-macro.S

diff --git a/include/asm-arm/arch-mxc/board-mx31ads.h b/include/asm-arm/arch-mxc/board-mx31ads.h
index 8590127760a8..1bc6fb0f9a83 100644
--- a/include/asm-arm/arch-mxc/board-mx31ads.h
+++ b/include/asm-arm/arch-mxc/board-mx31ads.h
@@ -109,4 +109,9 @@
 
 #define MXC_MAX_EXP_IO_LINES	16
 
+/* mandatory for CONFIG_LL_DEBUG */
+
+#define MXC_LL_UART_PADDR	UART1_BASE_ADDR
+#define MXC_LL_UART_VADDR	AIPS1_IO_ADDRESS(UART1_BASE_ADDR)
+
 #endif /* __ASM_ARCH_MXC_BOARD_MX31ADS_H__ */
diff --git a/include/asm-arm/arch-mxc/debug-macro.S b/include/asm-arm/arch-mxc/debug-macro.S
new file mode 100644
index 000000000000..34befbb2ea42
--- /dev/null
+++ b/include/asm-arm/arch-mxc/debug-macro.S
@@ -0,0 +1,38 @@
+/* linux/include/asm-arm/arch-imx/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 <asm/arch/hardware.h>
+
+#ifdef CONFIG_MACH_MX31ADS
+#include <asm/arch/board-mx31ads.h>
+#endif
+
+		.macro	addruart,rx
+		mrc	p15, 0, \rx, c1, c0
+		tst	\rx, #1			@ MMU enabled?
+		ldreq	\rx, =MXC_LL_UART_PADDR	@ physical
+		ldrne	\rx, =MXC_LL_UART_VADDR	@ virtual
+		.endm
+
+		.macro	senduart,rd,rx
+		str	\rd, [\rx, #0x40]	@ TXDATA
+		.endm
+
+		.macro	waituart,rd,rx
+		.endm
+
+		.macro	busyuart,rd,rx
+1002:		ldr	\rd, [\rx, #0x98]	@ SR2
+		tst	\rd, #1 << 3		@ TXDC
+		beq	1002b			@ wait until transmit done
+		.endm