am335x_evm: Convert CONFIG_CONS_INDEX into a menu choice

- Drop CONFIG_SERIAL[1-6] and use CONFIG_CONS_INDEX tests instead
- Add choice and help text to board/ti/am335x/Kconfig
- Correct comment about IDK in board/ti/am335x/mux.c
- Remove am335x_evm_uart* defconfig files as they're just variations
  on a config option now.

Signed-off-by: Tom Rini <trini@ti.com>

board/ti/am335x/Kconfig

@@ -20,4 +20,13 @@ config SYS_CONFIG_NAME
 	string
 	default "am335x_evm"
 
+config CONS_INDEX
+	int "UART used for console"
+	default 1
+	help
+	  The AM335x SoC has a total of 6 UARTs (UART0 to UART5 as referenced
+	  in documentation, etc) available to it.  Depending on your specific
+	  board you may want something other than UART0 as for example the IDK
+	  uses UART3 so enter 4 here.
+
 endif

board/ti/am335x/board.c

@@ -383,24 +383,19 @@ const struct dpll_params *get_dpll_ddr_params(void)
 
 void set_uart_mux_conf(void)
 {
-#ifdef CONFIG_SERIAL1
+#if CONFIG_CONS_INDEX == 1
 	enable_uart0_pin_mux();
-#endif /* CONFIG_SERIAL1 */
+#elif CONFIG_CONS_INDEX == 2
-#ifdef CONFIG_SERIAL2
 	enable_uart1_pin_mux();
-#endif /* CONFIG_SERIAL2 */
+#elif CONFIG_CONS_INDEX == 3
-#ifdef CONFIG_SERIAL3
 	enable_uart2_pin_mux();
-#endif /* CONFIG_SERIAL3 */
+#elif CONFIG_CONS_INDEX == 4
-#ifdef CONFIG_SERIAL4
 	enable_uart3_pin_mux();
-#endif /* CONFIG_SERIAL4 */
+#elif CONFIG_CONS_INDEX == 5
-#ifdef CONFIG_SERIAL5
 	enable_uart4_pin_mux();
-#endif /* CONFIG_SERIAL5 */
+#elif CONFIG_CONS_INDEX == 6
-#ifdef CONFIG_SERIAL6
 	enable_uart5_pin_mux();
-#endif /* CONFIG_SERIAL6 */
+#endif
 }
 
 void set_mux_conf_regs(void)

board/ti/am335x/mux.c

@@ -345,12 +345,7 @@ void enable_board_pin_mux(struct am335x_baseboard_id *header)
 			configure_module_pin_mux(spi0_pin_mux);
 		}
 	} else if (board_is_idk(header)) {
-		/*
+		/* Industrial Motor Control (IDK) */
-		 * Industrial Motor Control (IDK)
-		 * note: IDK console is on UART3 by default.
-		 *       So u-boot mus be build with CONFIG_SERIAL4 and
-		 *       CONFIG_CONS_INDEX=4
-		 */
 		configure_module_pin_mux(mii1_pin_mux);
 		configure_module_pin_mux(mmc0_no_cd_pin_mux);
 	} else if (board_is_evm_sk(header)) {

configs/am335x_evm_defconfig

@@ -1,4 +1,5 @@
 CONFIG_SPL=y
-CONFIG_SYS_EXTRA_OPTIONS="SERIAL1,CONS_INDEX=1,NAND"
+CONFIG_SYS_EXTRA_OPTIONS="NAND"
+CONFIG_CONS_INDEX=1
 +S:CONFIG_ARM=y
 +S:CONFIG_TARGET_AM335X_EVM=y

configs/am335x_evm_nor_defconfig

@@ -1,4 +1,5 @@
 CONFIG_SPL=y
-CONFIG_SYS_EXTRA_OPTIONS="SERIAL1,CONS_INDEX=1,NAND,NOR"
+CONFIG_SYS_EXTRA_OPTIONS="NAND,NOR"
+CONFIG_CONS_INDEX=1
 +S:CONFIG_ARM=y
 +S:CONFIG_TARGET_AM335X_EVM=y

configs/am335x_evm_norboot_defconfig

@@ -1,3 +1,4 @@
-CONFIG_SYS_EXTRA_OPTIONS="SERIAL1,CONS_INDEX=1,NOR,NOR_BOOT"
+CONFIG_SYS_EXTRA_OPTIONS="NOR,NOR_BOOT"
+CONFIG_CONS_INDEX=1
 CONFIG_ARM=y
 CONFIG_TARGET_AM335X_EVM=y

configs/am335x_evm_spiboot_defconfig

@@ -1,4 +1,5 @@
 CONFIG_SPL=y
-CONFIG_SYS_EXTRA_OPTIONS="SERIAL1,CONS_INDEX=1,SPI_BOOT"
+CONFIG_SYS_EXTRA_OPTIONS="SPI_BOOT"
+CONFIG_CONS_INDEX=1
 +S:CONFIG_ARM=y
 +S:CONFIG_TARGET_AM335X_EVM=y

configs/am335x_evm_uart1_defconfig

@@ -1,4 +0,0 @@
-CONFIG_SPL=y
-CONFIG_SYS_EXTRA_OPTIONS="SERIAL2,CONS_INDEX=2,NAND"
-+S:CONFIG_ARM=y
-+S:CONFIG_TARGET_AM335X_EVM=y

configs/am335x_evm_uart2_defconfig

@@ -1,4 +0,0 @@
-CONFIG_SPL=y
-CONFIG_SYS_EXTRA_OPTIONS="SERIAL3,CONS_INDEX=3,NAND"
-+S:CONFIG_ARM=y
-+S:CONFIG_TARGET_AM335X_EVM=y

configs/am335x_evm_uart3_defconfig

@@ -1,4 +0,0 @@
-CONFIG_SPL=y
-CONFIG_SYS_EXTRA_OPTIONS="SERIAL4,CONS_INDEX=4,NAND"
-+S:CONFIG_ARM=y
-+S:CONFIG_TARGET_AM335X_EVM=y

configs/am335x_evm_uart4_defconfig

@@ -1,4 +0,0 @@
-CONFIG_SPL=y
-CONFIG_SYS_EXTRA_OPTIONS="SERIAL5,CONS_INDEX=5,NAND"
-+S:CONFIG_ARM=y
-+S:CONFIG_TARGET_AM335X_EVM=y

configs/am335x_evm_uart5_defconfig

@@ -1,4 +0,0 @@
-CONFIG_SPL=y
-CONFIG_SYS_EXTRA_OPTIONS="SERIAL6,CONS_INDEX=6,NAND"
-+S:CONFIG_ARM=y
-+S:CONFIG_TARGET_AM335X_EVM=y

configs/am335x_evm_usbspl_defconfig

@@ -1,4 +1,5 @@
 CONFIG_SPL=y
-CONFIG_SYS_EXTRA_OPTIONS="SERIAL1,CONS_INDEX=1,NAND,SPL_USBETH_SUPPORT"
+CONFIG_SYS_EXTRA_OPTIONS="NAND,SPL_USBETH_SUPPORT"
+CONFIG_CONS_INDEX=1
 +S:CONFIG_ARM=y
 +S:CONFIG_TARGET_AM335X_EVM=y