From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001
From: André Fabian Silva Delgado <emulatorman@parabola.nu>
Date: Wed, 5 Aug 2015 17:04:01 -0300
Subject: Initial import

---
 arch/arm/include/debug/netx.S | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100644 arch/arm/include/debug/netx.S

(limited to 'arch/arm/include/debug/netx.S')

diff --git a/arch/arm/include/debug/netx.S b/arch/arm/include/debug/netx.S
new file mode 100644
index 000000000..81e1b2af7
--- /dev/null
+++ b/arch/arm/include/debug/netx.S
@@ -0,0 +1,36 @@
+/*
+ * 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.
+ *
+*/
+
+#define UART_DATA 0
+#define UART_FLAG 0x18
+#define UART_FLAG_BUSY (1 << 3)
+
+		.macro	addruart, rp, rv, tmp
+		ldr	\rp, =CONFIG_DEBUG_UART_PHYS
+		ldr	\rv, =CONFIG_DEBUG_UART_VIRT
+		.endm
+
+		.macro	senduart,rd,rx
+		str	\rd, [\rx, #UART_DATA]
+		.endm
+
+		.macro	busyuart,rd,rx
+1002:		ldr	\rd, [\rx, #UART_FLAG]
+		tst	\rd, #UART_FLAG_BUSY
+		bne	1002b
+		.endm
+
+		.macro	waituart,rd,rx
+1001:		ldr	\rd, [\rx, #UART_FLAG]
+		tst	\rd, #UART_FLAG_BUSY
+		bne	1001b
+		.endm
-- 
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