UART1_REG
while (!(readl(UART1_REG(LSR)) & UART_LSR_DR)) {
buf[i] = readl(UART1_REG(RX));
while (!(readl(UART1_REG(LSR)) & UART_LSR_THRE))
writel(buf[i++], UART1_REG(TX));
writel(0x83, UART1_REG(LCR));
writel(divisor & 0xff, UART1_REG(DLL));
writel((divisor >> 8) & 0xff, UART1_REG(DLM));
writel(0x1b, UART1_REG(LCR));
writel(0x00, UART1_REG(IER));
writel(0x07, UART1_REG(FCR));
writel(0x00, UART1_REG(MCR));
while (!(readl(UART1_REG(LSR)) & UART_LSR_DR)) {
buf[i] = readl(UART1_REG(RX));
while (!(readl(UART1_REG(LSR)) & UART_LSR_THRE))
writel(buf[i++], UART1_REG(TX));
writel(0x83, UART1_REG(LCR));
writel(divisor & 0xff, UART1_REG(DLL));
writel((divisor >> 8) & 0xff, UART1_REG(DLM));
writel(0x1b, UART1_REG(LCR));
writel(0x00, UART1_REG(IER));
writel(0x07, UART1_REG(FCR));
writel(0x00, UART1_REG(MCR));
writel(0x83, UART1_REG(LCR));
writel(divisor & 0xff, UART1_REG(DLL));
writel((divisor >> 8) & 0xff, UART1_REG(DLM));
writel(0x03, UART1_REG(LCR));
writel(0x00, UART1_REG(IER));
writel(0x00, UART1_REG(FCR));
writel(0x00, UART1_REG(MCR));
writel('A', UART1_REG(TX));
writel(0x83, UART1_REG(LCR));
writel(divisor & 0xff, UART1_REG(DLL));
writel((divisor >> 8) & 0xff, UART1_REG(DLM));
writel(0x03, UART1_REG(LCR));
writel(0x00, UART1_REG(IER));
writel(0x00, UART1_REG(FCR));
writel(0x00, UART1_REG(MCR));
writel(cfg->cmd, UART1_REG(TX));