- unsigned long tmp1, tmp2;
- __asm__ __volatile__(
- "ldrb %0, [%2], #1\n"
-" teq %0, #0\n"
-" beq 3f\n"
-"1: strb %0, [%3]\n"
-"2: ldrb %1, [%3, #0x14]\n"
-" and %1, %1, #0x60\n"
-" teq %1, #0x60\n"
-" bne 2b\n"
-" teq %0, #'\n'\n"
-" moveq %0, #'\r'\n"
-" beq 1b\n"
-" ldrb %0, [%2], #1\n"
-" teq %0, #0\n"
-" bne 1b\n"
-"3: ldrb %1, [%3, #0x14]\n"
-" and %1, %1, #0x60\n"
-" teq %1, #0x60\n"
-" bne 3b"
- : "=&r" (tmp1), "=&r" (tmp2)
- : "r" (s), "r" (0xf0000be0) : "cc");
+ unsigned char v, *base = SERIAL_BASE;
+
+ do {
+ v = base[UART_LSR << 2];
+ barrier();
+ } while ((v & (UART_LSR_TEMT|UART_LSR_THRE)) !=
+ (UART_LSR_TEMT|UART_LSR_THRE));