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authorShawn Guo <shawn.guo@linaro.org>2011-10-02 15:09:11 +0800
committerArnd Bergmann <arnd@arndb.de>2011-10-31 14:26:21 +0100
commitbac89d754ba333453576fd38eb6073d7f89818fe (patch)
treeb53d79778a231d9cb62cacd97910e03ac93da921 /arch/arm/mach-imx/lluart.c
parent7d740f87fd0741c00231a4b13074660d526d5630 (diff)
arm/imx6q: add core definitions and low-level debug uart
It adds the core definitions and low-level debug uart support for imx6q. Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Diffstat (limited to 'arch/arm/mach-imx/lluart.c')
-rw-r--r--arch/arm/mach-imx/lluart.c32
1 files changed, 32 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/lluart.c b/arch/arm/mach-imx/lluart.c
new file mode 100644
index 00000000000..d4ab6f29a76
--- /dev/null
+++ b/arch/arm/mach-imx/lluart.c
@@ -0,0 +1,32 @@
+/*
+ * Copyright 2011 Freescale Semiconductor, Inc.
+ * Copyright 2011 Linaro Ltd.
+ *
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+#include <linux/init.h>
+#include <asm/page.h>
+#include <asm/sizes.h>
+#include <asm/mach/map.h>
+#include <mach/hardware.h>
+
+static struct map_desc imx_lluart_desc = {
+#ifdef CONFIG_DEBUG_IMX6Q_UART
+ .virtual = MX6Q_IO_P2V(MX6Q_UART4_BASE_ADDR),
+ .pfn = __phys_to_pfn(MX6Q_UART4_BASE_ADDR),
+ .length = MX6Q_UART4_SIZE,
+ .type = MT_DEVICE,
+#endif
+};
+
+void __init imx_lluart_map_io(void)
+{
+ if (imx_lluart_desc.virtual)
+ iotable_init(&imx_lluart_desc, 1);
+}