diff options
Diffstat (limited to 'src/core/serial.c')
| -rw-r--r-- | src/core/serial.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/src/core/serial.c b/src/core/serial.c index a5551b136..8f5a159c4 100644 --- a/src/core/serial.c +++ b/src/core/serial.c @@ -93,6 +93,9 @@ FILE_LICENCE ( GPL2_OR_LATER ); #define uart_writeb(val,addr) outb((val),(addr)) #endif +/* Boolean for the state of serial driver initialization */ +int serial_initialized = 0; + /* * void serial_putc(int ch); * Write character `ch' to port UART_BASE. @@ -207,7 +210,6 @@ static void serial_init ( void ) { /* Set clear to send, so flow control works... */ uart_writeb((1<<1), UART_BASE + UART_MCR); - /* Flush the input buffer. */ do { /* rx buffer reg @@ -217,6 +219,9 @@ static void serial_init ( void ) { /* line status reg */ status = uart_readb(UART_BASE + UART_LSR); } while(status & UART_LSR_DR); + + /* Note that serial support has been initialized */ + serial_initialized = 1; out: return; } |