diff options
| -rw-r--r-- | lib/utils/serial/shakti-uart.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/lib/utils/serial/shakti-uart.c b/lib/utils/serial/shakti-uart.c index 493edcf..7c1148e 100644 --- a/lib/utils/serial/shakti-uart.c +++ b/lib/utils/serial/shakti-uart.c @@ -18,18 +18,22 @@ #define REG_IQ_CYCLES 0x1C #define REG_RX_THRES 0x20 +#define UART_TX_FULL 0x2 +#define UART_RX_FULL 0x8 + static volatile void *uart_base; void shakti_uart_putc(char ch) { - while((readw(uart_base + REG_STATUS) & 0x2) == 0); + while((readw(uart_base + REG_STATUS) & UART_TX_FULL)) + ; writeb(ch, uart_base + REG_TX); } int shakti_uart_getc(void) { u16 status = readw(uart_base + REG_STATUS); - if (status & 0x8) + if (status & UART_RX_FULL) return readb(uart_base + REG_RX); return -1; } |