ARM: imx6q: let users input debug uart port number
imx6q gets 5 uart ports in total. Different board design may choose
different port as debug uart. For example, imx6q-sabresd uses UART1,
imx6q-sabrelite uses UART2 and imx6q-arm2 uses UART4. Rather than
bloating DEBUG_LL choice list with all these uart ports, the patch
introduces DEBUG_IMX6Q_UART_PORT for users to input uart port number
when DEBUG_IMX6Q_UART is selected inside DEBUG_LL choice.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
diff --git a/arch/arm/include/debug/imx.S b/arch/arm/include/debug/imx.S
index 0b65d79..0c4e17d 100644
--- a/arch/arm/include/debug/imx.S
+++ b/arch/arm/include/debug/imx.S
@@ -10,6 +10,20 @@
* published by the Free Software Foundation.
*
*/
+#define IMX6Q_UART1_BASE_ADDR 0x02020000
+#define IMX6Q_UART2_BASE_ADDR 0x021e8000
+#define IMX6Q_UART3_BASE_ADDR 0x021ec000
+#define IMX6Q_UART4_BASE_ADDR 0x021f0000
+#define IMX6Q_UART5_BASE_ADDR 0x021f4000
+
+/*
+ * IMX6Q_UART_BASE_ADDR is put in the middle to force the expansion
+ * of IMX6Q_UART##n##_BASE_ADDR.
+ */
+#define IMX6Q_UART_BASE_ADDR(n) IMX6Q_UART##n##_BASE_ADDR
+#define IMX6Q_UART_BASE(n) IMX6Q_UART_BASE_ADDR(n)
+#define IMX6Q_DEBUG_UART_BASE IMX6Q_UART_BASE(CONFIG_DEBUG_IMX6Q_UART_PORT)
+
#ifdef CONFIG_DEBUG_IMX1_UART
#define UART_PADDR 0x00206000
#elif defined (CONFIG_DEBUG_IMX25_UART)
@@ -22,10 +36,8 @@
#define UART_PADDR 0x73fbc000
#elif defined (CONFIG_DEBUG_IMX50_IMX53_UART)
#define UART_PADDR 0x53fbc000
-#elif defined (CONFIG_DEBUG_IMX6Q_UART2)
-#define UART_PADDR 0x021e8000
-#elif defined (CONFIG_DEBUG_IMX6Q_UART4)
-#define UART_PADDR 0x021f0000
+#elif defined (CONFIG_DEBUG_IMX6Q_UART)
+#define UART_PADDR IMX6Q_DEBUG_UART_BASE
#endif
/*