1 /* 2 * (C) P. Horton 2006 3 */ 4 #include <linux/io.h> 5 #include <linux/serial_reg.h> 6 7 #include <cobalt.h> 8 9 #define UART_BASE ((void __iomem *)CKSEG1ADDR(0x1c800000)) 10 prom_putchar(char c)11void prom_putchar(char c) 12 { 13 if (cobalt_board_id <= COBALT_BRD_ID_QUBE1) 14 return; 15 16 while (!(readb(UART_BASE + UART_LSR) & UART_LSR_THRE)) 17 ; 18 19 writeb(c, UART_BASE + UART_TX); 20 } 21