uart: Support multiple ports

The port for console remains to be a compile time constant.
The Kconfig option is changed to select an UART port with index
to avoid putting map of UART base addresses in Kconfigs.

With this change it is possible to have other than debug console
on different UART port.

Change-Id: Ie1845a946f8d3b2604ef5404edb31b2e811f3ccd
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/5342
Tested-by: build bot (Jenkins)
Reviewed-by: David Hendricks <dhendrix@chromium.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>

1 files changed, 13 insertions, 10 deletions

diff --git a/src/cpu/samsung/exynos5250/uart.c b/src/cpu/samsung/exynos5250/uart.c
index 1dabc093eb..a73a01aba7 100644
--- a/src/cpu/samsung/exynos5250/uart.c
+++ b/src/cpu/samsung/exynos5250/uart.c
@@ -157,30 +157,33 @@ static void exynos5_uart_tx_flush(struct s5p_uart *uart)
 
 unsigned int uart_platform_base(int idx)
 {
-	return CONFIG_CONSOLE_SERIAL_UART_ADDRESS;
+	if (idx < 4)
+		return 0x12c00000 + idx * 0x10000;
+	else
+		return 0;
 }
 
-void uart_init(void)
+void uart_init(int idx)
 {
-	struct s5p_uart *uart = uart_platform_baseptr(0);
+	struct s5p_uart *uart = uart_platform_baseptr(idx);
 	exynos5_init_dev(uart);
 }
 
-unsigned char uart_rx_byte(void)
+unsigned char uart_rx_byte(int idx)
 {
-	struct s5p_uart *uart = uart_platform_baseptr(0);
+	struct s5p_uart *uart = uart_platform_baseptr(idx);
 	return exynos5_uart_rx_byte(uart);
 }
 
-void uart_tx_byte(unsigned char data)
+void uart_tx_byte(int idx, unsigned char data)
 {
-	struct s5p_uart *uart = uart_platform_baseptr(0);
+	struct s5p_uart *uart = uart_platform_baseptr(idx);
 	exynos5_uart_tx_byte(uart, data);
 }
 
-void uart_tx_flush(void)
+void uart_tx_flush(int idx)
 {
-	struct s5p_uart *uart = uart_platform_baseptr(0);
+	struct s5p_uart *uart = uart_platform_baseptr(idx);
 	exynos5_uart_tx_flush(uart);
 }
 
@@ -189,7 +192,7 @@ void uart_fill_lb(void *data)
 {
 	struct lb_serial serial;
 	serial.type = LB_SERIAL_TYPE_MEMORY_MAPPED;
-	serial.baseaddr = uart_platform_base(0);
+	serial.baseaddr = uart_platform_base(CONFIG_UART_FOR_CONSOLE);
 	serial.baud = default_baudrate();
 	lb_add_serial(&serial, data);