uart: Prepare to support multiple base addresses
Prepare low-level register access to take UART base address as a
parameter. This is done to support a list of base addresses defined
in the platform.
Change-Id: Ie630e55f2562f099b0ba9eb94b08c92d26dfdf2e
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/5309
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
diff --git a/src/drivers/uart/pl011.c b/src/drivers/uart/pl011.c
index 2202de7..e4bfdc6 100644
--- a/src/drivers/uart/pl011.c
+++ b/src/drivers/uart/pl011.c
@@ -15,12 +15,14 @@
#include <console/uart.h>
-static void pl011_uart_tx_byte(unsigned char data)
+static void pl011_uart_tx_byte(unsigned int *uart_base, unsigned char data)
{
- static volatile unsigned int *uart0_address =
- (unsigned int *) CONFIG_CONSOLE_SERIAL_UART_ADDRESS;
+ *uart_base = (unsigned int)data;
+}
- *uart0_address = (unsigned int)data;
+unsigned int uart_platform_base(int idx)
+{
+ return CONFIG_CONSOLE_SERIAL_UART_ADDRESS;
}
#if !defined(__PRE_RAM__)
@@ -36,7 +38,8 @@
void uart_tx_byte(unsigned char data)
{
- pl011_uart_tx_byte(data);
+ unsigned int *uart_base = uart_platform_baseptr(0);
+ pl011_uart_tx_byte(uart_base, data);
}
void uart_tx_flush(void)