arm: imx: add i.MX 6UltraLite and EVK board support

The i.MX 6UltraLite[1] is a high performance, ultra-efficient processor
family featuring an advanced implementation of a single ARM® Cortex®-A7
core.

This patch add i.MX 6Ulralite EVK board support:
1. Add a uart driver for i.MX platforms
2. Introduce plat-imx for i.MX platforms
3. Introduce i.MX6 UltraLite platform
4. This patch has been tested using the following step,
4.1. build step:
 PLATFORM_FLAVOR=mx6ulevk make ARCH=arm PLATFORM=imx
 ${CROSS_COMPILE}-objcopy -O binary out/arm-plat-imx/core/tee.elf optee.bin
 copy optee.bin to the first partition of SD card which is used for boot.
4.2. Boot setting in uboot:
 run loadfdt;
 run loadimage;
 fatload mmc 1:1 0x9c100000 optee.bin;
 run mmcargs;
 bootz ${loadaddr} - ${fdt_addr};
5. pass xtest

Note:
 CAAM is not implemented now, this will be added later.

[1] http://www.freescale.com/webapp/sps/site/prod_summary.jsp?
    code=i.MX6UL&tid=redI.MX6UL-FAMILY&uc=true&lang_cd=en

Signed-off-by: Peng Fan <Peng.Fan@freescale.com>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>
Reviewed-by: Jerome Forissier <jerome.forissier@linaro.org>
Reviewed-by: Pascal Brand <pascal.brand@linaro.org>

1 files changed, 42 insertions, 0 deletions

diff --git a/core/include/drivers/imx_uart.h b/core/include/drivers/imx_uart.h
new file mode 100644
index 00000000..db63227b
--- /dev/null
+++ b/core/include/drivers/imx_uart.h
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2015 Freescale Semiconductor, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef IMX_UART_H
+#define IMX_UART_H
+
+#include <types_ext.h>
+
+void imx_uart_init(vaddr_t base);
+
+void imx_uart_putc(const char ch, vaddr_t base);
+
+void imx_uart_flush_tx_fifo(vaddr_t base);
+
+bool imx_uart_have_rx_data(vaddr_t base);
+
+int imx_uart_getchar(vaddr_t base);
+
+#endif /* IMX_UART_H */