pl011 UART: Move under drivers/uart

Currently this is only a minimal stub to get console on qemu-armv7.

Change-Id: I3f20b7f944bc7d0e5ace9d22198d4c16a3839d2c
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/5162
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

src/drivers/uart/Kconfig

@@ -12,3 +12,7 @@ config HAVE_UART_SPECIAL
 	bool
 	default n
 
+config DRIVERS_UART_PL011
+	bool
+	default n
+	select HAVE_UART_SPECIAL

src/drivers/uart/Makefile.inc

@@ -4,3 +4,13 @@ ramstage-y += util.c
 bootblock-y += util.c
 smm-y += util.c
 endif
+
+ifeq ($(CONFIG_CONSOLE_SERIAL_UART),y)
+
+ifeq ($(CONFIG_DRIVERS_UART_PL011),y)
+bootblock-$(CONFIG_BOOTBLOCK_CONSOLE) += pl011.c
+romstage-$(CONFIG_EARLY_CONSOLE) += pl011.c
+ramstage-y += pl011.c
+endif
+
+endif

src/drivers/uart/pl011.c

@@ -16,37 +16,27 @@
 #include <console/console.h>
 #include <uart.h>
 
-#define VEXPRESS_UART0_IO_ADDRESS	(0x10009000)
-
-static void pl011_init_dev(void) {
-}
-
-static void pl011_uart_tx_byte(unsigned char data) {
+static void pl011_uart_tx_byte(unsigned char data)
+{
 	static volatile unsigned int *uart0_address =
-			(unsigned int *)VEXPRESS_UART0_IO_ADDRESS;
+		(unsigned int *) CONFIG_CONSOLE_SERIAL_UART_ADDRESS;
 
 	*uart0_address = (unsigned int)data;
 }
 
-static void pl011_uart_tx_flush(void) {
-}
-
 #if !defined(__PRE_RAM__)
 
 static const struct console_driver pl011_uart_console __console = {
-	.init     = pl011_init_dev,
 	.tx_byte  = pl011_uart_tx_byte,
-	.tx_flush = pl011_uart_tx_flush,
 };
 
 uint32_t uartmem_getbaseaddr(void)
 {
-	return VEXPRESS_UART0_IO_ADDRESS;
+	return CONFIG_CONSOLE_SERIAL_UART_ADDRESS;
 }
 #else
 void uart_init(void)
 {
-	pl011_init_dev();
 }
 
 void uart_tx_byte(unsigned char data)
@@ -54,7 +44,7 @@ void uart_tx_byte(unsigned char data)
 	pl011_uart_tx_byte(data);
 }
 
-void uart_tx_flush(void) {
-	pl011_uart_tx_flush();
+void uart_tx_flush(void)
+{
 }
 #endif

src/mainboard/emulation/qemu-armv7/Kconfig

@@ -25,8 +25,7 @@ config BOARD_SPECIFIC_OPTIONS # dummy
 	def_bool y
 	select ARCH_ARMV7
 	select CPU_ARMLTD_CORTEX_A9
-	select HAVE_UART_MEMORY_MAPPED
-	select HAVE_UART_SPECIAL
+	select DRIVERS_UART_PL011
 	select BOARD_ROMSIZE_KB_4096
 
 config MAINBOARD_DIR
@@ -49,6 +48,11 @@ config DRAM_SIZE_MB
 	int
 	default 1024
 
+config CONSOLE_SERIAL_UART_ADDRESS
+	hex
+	depends on CONSOLE_SERIAL_UART
+	default 0x10009000
+
 # Memory map for qemu vexpress-a9:
 #
 # 0x0000_0000: jump instruction (by qemu)

src/mainboard/emulation/qemu-armv7/Makefile.inc

@@ -21,7 +21,3 @@ ramstage-y += media.c
 bootblock-y += timer.c
 romstage-y += timer.c
 ramstage-y += timer.c
-
-bootblock-$(CONFIG_BOOTBLOCK_CONSOLE) += uart.c
-romstage-$(CONFIG_EARLY_CONSOLE) += uart.c
-ramstage-y += uart.c