MIPS need to use KSEG1 address for register operation, this patch add map_physmem to convert CONFIG_DEBUG_UART_BASE for debug UART.
Signed-off-by: Wills Wang wills.wang@live.com ---
Changes in v6: None Changes in v5: None Changes in v4: None Changes in v3: None Changes in v2: None
drivers/serial/ns16550.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/serial/ns16550.c b/drivers/serial/ns16550.c index 3b24af0..1e2538e 100644 --- a/drivers/serial/ns16550.c +++ b/drivers/serial/ns16550.c @@ -270,7 +270,8 @@ int NS16550_tstc(NS16550_t com_port)
static inline void _debug_uart_init(void) { - struct NS16550 *com_port = (struct NS16550 *)CONFIG_DEBUG_UART_BASE; + struct NS16550 *com_port = (struct NS16550 *)map_physmem( + CONFIG_DEBUG_UART_BASE, 0, MAP_NOCACHE); int baud_divisor;
/* @@ -293,7 +294,8 @@ static inline void _debug_uart_init(void)
static inline void _debug_uart_putc(int ch) { - struct NS16550 *com_port = (struct NS16550 *)CONFIG_DEBUG_UART_BASE; + struct NS16550 *com_port = (struct NS16550 *)map_physmem( + CONFIG_DEBUG_UART_BASE, 0, MAP_NOCACHE);
while (!(serial_din(&com_port->lsr) & UART_LSR_THRE)) ;