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@@ -22,11 +22,21 @@
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#include <mach/regs-serial.h>
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#include <mach/map.h>
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+#include <linux/serial_reg.h>
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#define arch_decomp_wdog()
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+#define TX_DONE (UART_LSR_TEMT | UART_LSR_THRE)
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+static volatile u32 * uart_base = (u32 *)UART0_PA;
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+
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static void putc(int ch)
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{
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+ /* Check THRE and TEMT bits before we transmit the character.
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+ */
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+ while ((uart_base[UART_LSR] & TX_DONE) != TX_DONE)
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+ barrier();
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+
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+ *uart_base = ch;
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}
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static inline void flush(void)
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wanzongshun