[U-Boot] [PATCH v6 07/10] ns16550: map register base address for debug UART
Wills Wang
wills.wang at live.com
Mon Jan 4 12:14:58 CET 2016
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 at 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))
;
--
1.9.1
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