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#include <linux/io.h> #include <linux/amba/serial.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, UART01x_DR); while ((UART_READ(UART01x_FR) & UART01x_FR_TXFF) != 0) ; }