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From: Antony Pavlov <antonynpavlov@gmail.com>
To: barebox@lists.infradead.org
Subject: [PATCH 2/5] ARM: uemd: add DEBUG_LL support
Date: Wed, 16 Apr 2014 13:57:37 +0400	[thread overview]
Message-ID: <1397642260-32606-3-git-send-email-antonynpavlov@gmail.com> (raw)
In-Reply-To: <1397642260-32606-1-git-send-email-antonynpavlov@gmail.com>

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
---
 arch/arm/Kconfig                           |  1 +
 arch/arm/mach-uemd/include/mach/debug_ll.h | 41 ++++++++++++++++++++++++++++++
 2 files changed, 42 insertions(+)

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 040df54..5dc9c64 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -187,6 +187,7 @@ config ARCH_TEGRA
 config ARCH_UEMD
 	bool "RC Module UEMD Platform"
 	select CPU_ARM1176
+	select HAS_DEBUG_LL
 
 config ARCH_ZYNQ
 	bool "Xilinx Zynq-based boards"
diff --git a/arch/arm/mach-uemd/include/mach/debug_ll.h b/arch/arm/mach-uemd/include/mach/debug_ll.h
new file mode 100644
index 0000000..5b45f6a
--- /dev/null
+++ b/arch/arm/mach-uemd/include/mach/debug_ll.h
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2014 Antony Pavlov <antonynpavlov@gmail.com>
+ *
+ * This file is part of barebox.
+ * See file CREDITS for list of people who contributed to this project.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+
+/** @file
+ *  This File contains declaration for early output support
+ */
+#ifndef __INCLUDE_ARCH_DEBUG_LL_H__
+#define __INCLUDE_ARCH_DEBUG_LL_H__
+
+#include <asm/io.h>
+
+#define DEBUG_LL_UART_ADDR	0x2002b000
+#define DEBUG_LL_UART_RSHFT	2
+
+#define rbr		(0 << DEBUG_LL_UART_RSHFT)
+#define lsr		(5 << DEBUG_LL_UART_RSHFT)
+#define LSR_THRE	0x20	/* Xmit holding register empty */
+
+static inline void PUTC_LL(char ch)
+{
+	while (!(__raw_readb(DEBUG_LL_UART_ADDR + lsr) & LSR_THRE))
+		;
+
+	__raw_writeb(ch, DEBUG_LL_UART_ADDR + rbr);
+}
+
+#endif /* __INCLUDE_ARCH_DEBUG_LL_H__ */
-- 
1.9.0


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  parent reply	other threads:[~2014-04-16  9:58 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-04-16  9:57 [PATCH 0/5] ARM: initial support for RC Module UEMD SoCs and MB 77.07 board Antony Pavlov
2014-04-16  9:57 ` [PATCH 1/5] ARM: initial support for RC Module UEMD SoCs Antony Pavlov
2014-04-23  8:35   ` Sascha Hauer
2014-04-16  9:57 ` Antony Pavlov [this message]
2014-04-16  9:57 ` [PATCH 3/5] ARM: dts: add minimal К1879ХБ1Я devicetree file Antony Pavlov
2014-04-16  9:57 ` [PATCH 4/5] ARM: uemd: add mb7707 board support Antony Pavlov
2014-04-16  9:57 ` [PATCH 5/5] ARM: uemd: add module-mb7707_defconfig Antony Pavlov
2014-05-09  6:20 ` [PATCH 0/5] ARM: initial support for RC Module UEMD SoCs and MB 77.07 board Sascha Hauer
2014-05-09  7:49   ` Antony Pavlov

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