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>

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 000000000000..d4ab6f29a766
--- /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);
+}