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#include <linux/io.h> #include <linux/serial_core.h> #include <adm8668.h> #define UART_READ(r) \ __raw_readl((void __iomem *)(KSEG1ADDR(ADM8668_UART0_BASE) + (r))) #define UART_WRITE(v, r) \ __raw_writel((v), (void __iomem *)(KSEG1ADDR(ADM8668_UART0_BASE) + (r))) void prom_putchar(char c) { UART_WRITE(c, UART_DR_REG); while ((UART_READ(UART_FR_REG) & UART_TX_FIFO_FULL) != 0) ; }