| #include <console/console.h> |
| #include <uart8250.h> |
| #include <pc80/mc146818rtc.h> |
| |
| /* Base Address */ |
| #ifndef TTYS0_BASE |
| #define TTYS0_BASE 0x3f8 |
| #endif |
| |
| #ifndef TTYS0_BAUD |
| #define TTYS0_BAUD 115200 |
| #endif |
| |
| #ifndef TTYS0_DIV |
| #if ((115200%TTYS0_BAUD) != 0) |
| #error Bad ttys0 baud rate |
| #endif |
| #define TTYS0_DIV (115200/TTYS0_BAUD) |
| #endif |
| |
| /* Line Control Settings */ |
| #ifndef TTYS0_LCS |
| /* Set 8bit, 1 stop bit, no parity */ |
| #define TTYS0_LCS 0x3 |
| #endif |
| |
| #define UART_LCS TTYS0_LCS |
| |
| static void ttyS0_init(void) |
| { |
| static const unsigned char div[8]={1,2,3,6,12,24,48,96}; |
| int b_index=0; |
| unsigned int divisor=TTYS0_DIV; |
| |
| if(get_option(&b_index,"baud_rate")==0) { |
| divisor=div[b_index]; |
| } |
| uart8250_init(TTYS0_BASE, divisor, TTYS0_LCS); |
| } |
| |
| static void ttyS0_tx_byte(unsigned char data) |
| { |
| uart8250_tx_byte(TTYS0_BASE, data); |
| } |
| |
| static unsigned char ttyS0_rx_byte(void) |
| { |
| return uart8250_rx_byte(TTYS0_BASE); |
| } |
| |
| static int ttyS0_tst_byte(void) |
| { |
| return uart8250_can_rx_byte(TTYS0_BASE); |
| } |
| |
| static struct console_driver uart8250_console __console = { |
| .init = ttyS0_init, |
| .tx_byte = ttyS0_tx_byte, |
| .rx_byte = ttyS0_rx_byte, |
| .tst_byte = ttyS0_tst_byte, |
| }; |
| |