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authorMaxime Ripard <maxime.ripard@free-electrons.com>2012-11-08 12:40:49 +0100
committerMaxime Ripard <maxime.ripard@free-electrons.com>2012-11-16 21:56:52 +0100
commitcb84fa18a40fb142d725bf5c7594a0a16cd96289 (patch)
treebcebf62f92e66353267299fe482328749712bf7b /arch/arm/include/debug/sunxi.S
parent3b52634f0b7adaaf2b29569025287b938b7c71a6 (diff)
ARM: sunxi: Add earlyprintk support
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Acked-by: Stefan Roese <sr@denx.de>
Diffstat (limited to 'arch/arm/include/debug/sunxi.S')
-rw-r--r--arch/arm/include/debug/sunxi.S24
1 files changed, 24 insertions, 0 deletions
diff --git a/arch/arm/include/debug/sunxi.S b/arch/arm/include/debug/sunxi.S
new file mode 100644
index 00000000000..3bf61ca0df7
--- /dev/null
+++ b/arch/arm/include/debug/sunxi.S
@@ -0,0 +1,24 @@
+/*
+ * Early serial output macro for Allwinner A1X SoCs
+ *
+ * Copyright (C) 2012 Maxime Ripard
+ *
+ * Maxime Ripard <maxime.ripard@free-electrons.com>
+ *
+ * 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.
+*/
+
+#ifdef CONFIG_DEBUG_SUNXI_UART1
+#define SUNXI_UART_DEBUG_PHYS_BASE 0x01c28400
+#define SUNXI_UART_DEBUG_VIRT_BASE 0xf1c28400
+#endif
+
+ .macro addruart, rp, rv, tmp
+ ldr \rp, =SUNXI_UART_DEBUG_PHYS_BASE
+ ldr \rv, =SUNXI_UART_DEBUG_VIRT_BASE
+ .endm
+
+#define UART_SHIFT 2
+#include <asm/hardware/debug-8250.S>