diff --git a/arch/z80/src/ez80/ez80_serial.c.SAVE b/arch/z80/src/ez80/ez80_serial.c.SAVE deleted file mode 100644 index a6376bbe3cc..00000000000 --- a/arch/z80/src/ez80/ez80_serial.c.SAVE +++ /dev/null @@ -1,850 +0,0 @@ -/**************************************************************************** - * arch/z80/src/ez08/ez80_serial.c - * - * Licensed to the Apache Software Foundation (ASF) under one or more - * contributor license agreements. See the NOTICE file distributed with - * this work for additional information regarding copyright ownership. The - * ASF licenses this file to you under the Apache License, Version 2.0 (the - * "License"); you may not use this file except in compliance with the - * License. You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT - * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the - * License for the specific language governing permissions and limitations - * under the License. * - ****************************************************************************/ - -/**************************************************************************** - * Included Files - ****************************************************************************/ - -#include - -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include -#include - -#include "chip.h" -#include "z80_internal.h" - -#ifdef USE_SERIALDRIVER - -/**************************************************************************** - * Pre-processor Definitions - ****************************************************************************/ - -/**************************************************************************** - * Private Types - ****************************************************************************/ - -struct ez80_dev_s -{ - uint16_t uartbase; /* Base address of UART registers */ - unsigned int baud; /* Configured baud */ - uint8_t irq; /* IRQ associated with this UART */ - uint8_t parity; /* 0=none, 1=odd, 2=even */ - uint8_t bits; /* Number of bits (7 or 8) */ - bool stopbits2; /* true: Configure with 2 (vs 1) */ -}; - -/**************************************************************************** - * Private Function Prototypes - ****************************************************************************/ - -static int ez80_setup(struct uart_dev_s *dev); -static void ez80_shutdown(struct uart_dev_s *dev); -static int ez80_attach(struct uart_dev_s *dev); -static void ez80_detach(struct uart_dev_s *dev); -static int ez80_interrupt(int irq, void *context, void *arg); -static int ez80_ioctl(struct file *filep, int cmd, unsigned long arg); -static int ez80_receive(struct uart_dev_s *dev, unsigned int *status); -static void ez80_rxint(struct uart_dev_s *dev, bool enable); -static bool ez80_rxavailable(struct uart_dev_s *dev); -static void ez80_send(struct uart_dev_s *dev, int ch); -static void ez80_txint(struct uart_dev_s *dev, bool enable); -static bool ez80_txready(struct uart_dev_s *dev); -static bool ez80_txempty(struct uart_dev_s *dev); - -/**************************************************************************** - * Private Data - ****************************************************************************/ - -static const struct uart_ops_s g_uart_ops = -{ - ez80_setup, /* setup */ - ez80_shutdown, /* shutdown */ - ez80_attach, /* attach */ - ez80_detach, /* detach */ - ez80_ioctl, /* ioctl */ - ez80_receive, /* receive */ - ez80_rxint, /* rxint */ - ez80_rxavailable, /* rxavailable */ -#ifdef CONFIG_SERIAL_IFLOWCONTROL - NULL, /* rxflowcontrol */ -#endif - ez80_send, /* send */ - ez80_txint, /* txint */ - ez80_txready, /* txready */ - ez80_txempty /* txempty */ -}; - -/* I/O buffers */ - -#ifdef CONFIG_EZ80_UART0 -static char g_uart0rxbuffer[CONFIG_UART0_RXBUFSIZE]; -static char g_uart0txbuffer[CONFIG_UART0_TXBUFSIZE]; -#endif -#ifdef CONFIG_EZ80_UART1 -static char g_uart1rxbuffer[CONFIG_UART1_RXBUFSIZE]; -static char g_uart1txbuffer[CONFIG_UART1_TXBUFSIZE]; -#endif - -/* This describes the state of the UART0 port. */ - -#ifdef CONFIG_EZ80_UART0 -static struct ez80_dev_s g_uart0priv = -{ - EZ80_UART0_BASE, /* uartbase */ - CONFIG_UART0_BAUD, /* baud */ - EZ80_UART0_IRQ, /* irq */ - CONFIG_UART0_PARITY, /* parity */ - CONFIG_UART0_BITS, /* bits */ - CONFIG_UART0_2STOP /* stopbits2 */ -}; - -static uart_dev_t g_uart0port = -{ - 0, /* open_count */ - false, /* xmitwaiting */ - false, /* recvwaiting */ -#ifdef CONFIG_UART0_SERIAL_CONSOLE - true, /* isconsole */ -#else - false, /* isconsole */ -#endif - { 0 }, /* closesem */ - { 0 }, /* xmitsem */ - { 0 }, /* recvsem */ - { 0 }, /* pollsem */ - { - { 0 }, /* xmit.sem */ - 0, /* xmit.head */ - 0, /* xmit.tail */ - CONFIG_UART0_TXBUFSIZE, /* xmit.size */ - g_uart0txbuffer, /* xmit.buffer */ - }, - { - { 0 }, /* recv.sem */ - 0, /* recv.head */ - 0, /* recv.tail */ - CONFIG_UART0_RXBUFSIZE, /* recv.size */ - g_uart0rxbuffer, /* recv.buffer */ - }, - &g_uart_ops, /* ops */ - &g_uart0priv, /* priv */ - NULL, /* pollfds */ -}; -#endif - -/* This describes the state of the UART1 port. */ - -#ifdef CONFIG_EZ80_UART1 -static struct ez80_dev_s g_uart1priv = -{ - EZ80_UART1_BASE, /* uartbase */ - CONFIG_UART1_BAUD, /* baud */ - EZ80_UART1_IRQ, /* irq */ - CONFIG_UART1_PARITY, /* parity */ - CONFIG_UART1_BITS, /* bits */ - CONFIG_UART1_2STOP /* stopbits2 */ -}; - -static uart_dev_t g_uart1port = -{ - 0, /* open_count */ - false, /* xmitwaiting */ - false, /* recvwaiting */ -#ifdef CONFIG_UART1_SERIAL_CONSOLE - true, /* isconsole */ -#else - false, /* isconsole */ -#endif - { 0 }, /* closesem */ - { 0 }, /* xmitsem */ - { 0 }, /* recvsem */ - { 0 }, /* pollsem */ - { - { 0 }, /* xmit.sem */ - 0, /* xmit.head */ - 0, /* xmit.tail */ - CONFIG_UART1_TXBUFSIZE, /* xmit.size */ - g_uart1txbuffer, /* xmit.buffer */ - }, - { - { 0 }, /* recv.sem */ - 0, /* recv.head */ - 0, /* recv.tail */ - CONFIG_UART1_RXBUFSIZE, /* recv.size */ - g_uart1rxbuffer, /* recv.buffer */ - }, - &g_uart_ops, /* ops */ - &g_uart1priv, /* priv */ - NULL, /* pollfds */ -}; -#endif - -/* Now, which one with be tty0/console and which tty1? */ - -#if defined(CONFIG_UART0_SERIAL_CONSOLE) && defined(CONFIG_EZ80_UART0) -# define CONSOLE_DEV g_uart0port -# define TTYS0_DEV g_uart0port -# if defined(CONFIG_EZ80_UART1) -# define TTYS1_DEV g_uart1port -# endif -#elif defined(CONFIG_UART1_SERIAL_CONSOLE) && defined(CONFIG_EZ80_UART1) -# define CONSOLE_DEV g_uart1port -# define TTYS0_DEV g_uart1port -# if defined(CONFIG_EZ80_UART0) -# define TTYS1_DEV g_uart0port -# endif -#elif defined(CONFIG_EZ80_UART0) -# define TTYS0_DEV g_uart0port -# if defined(CONFIG_EZ80_UART1) -# define TTYS1_DEV g_uart1port -# endif -#elif defined(CONFIG_EZ80_UART0) -# define TTYS0_DEV g_uart1port -#endif - -/**************************************************************************** - * Private Functions - ****************************************************************************/ - -/**************************************************************************** - * Name: ez80_serialin - ****************************************************************************/ - -static uint8_t ez80_serialin(FAR struct ez80_dev_s *priv, uint8_t offset) -{ - return inp(priv->uartbase + offset); -} - -/**************************************************************************** - * Name: ez80_serialout - ****************************************************************************/ - -static void ez80_serialout(FAR struct ez80_dev_s *priv, uint8_t offset, - uint8_t value) -{ - outp(priv->uartbase + offset, value); -} - -/**************************************************************************** - * Name: ez80_disableuartint - ****************************************************************************/ - -static void ez80_disableuartint(FAR struct ez80_dev_s *priv) -{ - uint8_t ier = ez80_serialin(priv, EZ80_UART_IER); - ier &= ~EZ80_UARTEIR_INTMASK; - ez80_serialout(priv, EZ80_UART_IER, ier); -} - -/**************************************************************************** - * Name: ez80_restoreuartint - ****************************************************************************/ - -static void ez80_restoreuartint(FAR struct ez80_dev_s *priv, uint8_t bits) -{ - uint8_t ier = ez80_serialin(priv, EZ80_UART_IER); - ier |= bits & (EZ80_UARTEIR_TIE | EZ80_UARTEIR_RIE); - ez80_serialout(priv, EZ80_UART_IER, ier); -} - -/**************************************************************************** - * Name: ez80_waittxready - ****************************************************************************/ - -static void ez80_waittxready(FAR struct ez80_dev_s *priv) -{ - int tmp; - - for (tmp = 1000 ; tmp > 0 ; tmp--) - { - if ((ez80_serialin(priv, EZ80_UART_LSR) & EZ80_UARTLSR_THRE) != 0) - { - break; - } - } -} - -/**************************************************************************** - * Name: ez80_setbaud - ****************************************************************************/ - -static void ez80_setbaud(FAR struct ez80_dev_s *priv, uint24_t baud) -{ - uint32_t brg_divisor; - uint8_t lctl; - - /* The resulting BAUD and depends on the system clock frequency and the - * BRG divisor as follows: - * - * BAUD = SYSTEM_CLOCK_FREQUENCY / (16 * BRG_Divisor) - * - * Or - * - * BRG_Divisor = SYSTEM_CLOCK_FREQUENCY / 16 / BAUD - */ - - brg_divisor = (ez80_systemclock + (baud << 3)) / (baud << 4); - - /* Set the DLAB bit to enable access to the BRG registers */ - - lctl = ez80_serialin(priv, EZ80_UART_LCTL); - lctl |= EZ80_UARTLCTL_DLAB; - ez80_serialout(priv, EZ80_UART_LCTL, lctl); - - ez80_serialout(priv, EZ80_UART_BRGL, (uint8_t)(brg_divisor & 0xff)); - ez80_serialout(priv, EZ80_UART_BRGH, (uint8_t)(brg_divisor >> 8)); - - lctl &= ~EZ80_UARTLCTL_DLAB; - ez80_serialout(priv, EZ80_UART_LCTL, lctl); -} - -/**************************************************************************** - * Name: ez80_setup - * - * Description: - * Configure the UART baud, bits, parity, fifos, etc. This method is called - * the first time that the serial port is opened. - * - ****************************************************************************/ - -static int ez80_setup(FAR struct uart_dev_s *dev) -{ -#ifndef CONFIG_SUPPRESS_UART_CONFIG - FAR struct ez80_dev_s *priv = dev->priv; - uint8_t reg; - uint8_t cval; - - /* Put the UART in a known state */ - - ez80_shutdown(dev); - - /* Configure serial properties */ - - if (priv->bits == 7) - { - cval = EZ80_UARTCHAR_7BITS; - } - else - { - cval = EZ80_UARTCHAR_8BITS; - } - - if (priv->stopbits2) - { - cval |= EZ80_UARTLCTL_2STOP; - } - - if (priv->parity == 1) /* Odd parity */ - { - cval |= (EZ80_UARTLCTL_PEN); - } - else if (priv->parity == 2) /* Even parity */ - { - cval |= (EZ80_UARTLCTL_PEN | EZ80_UARTLCTL_EPS); - } - - /* Set the baud rate */ - - ez80_setbaud(priv, priv->baud); - ez80_serialout(priv, EZ80_UART_MCTL, 0); - - /* Set the character properties */ - - reg = (ez80_serialin(priv, EZ80_UART_LCTL) & ~EZ80_UARTLCTL_MASK) | cval; - ez80_serialout(priv, EZ80_UART_LCTL, reg); - - /* Enable and flush the Rx and Tx FIFOs */ - - reg = EZ80_UARTFCTL_FIFOEN; - ez80_serialout(priv, EZ80_UART_FCTL, reg); - reg |= (EZ80_UARTFCTL_CLRTXF | EZ80_UARTFCTL_CLRRXF); - ez80_serialout(priv, EZ80_UART_FCTL, reg); - - /* Set the Rx FIFO trigger level. Small values assure the quickest - * response to get data from the Rx FIFO. This minimizes the - * likelihood of Rx overruns with a penalty of more time spent - * handling Rx interrupts. - */ - -#if defined(CONFIG_EZ80_UART_RXFIFO_1) - reg |= EZ80_UARTTRIG_1; -#elif defined(CONFIG_EZ80_UART_RXFIFO_4) - reg |= EZ80_UARTTRIG_4; -#elif defined(CONFIG_EZ80_UART_RXFIFO_8) - reg |= EZ80_UARTTRIG_8; -#elif defined(CONFIG_EZ80_UART_RXFIFO_14) - reg |= EZ80_UARTTRIG_14; -#else -# error No Rx FIFO trigger level -#endif - - ez80_serialout(priv, EZ80_UART_FCTL, reg); -#endif - - return OK; -} - -/**************************************************************************** - * Name: ez80_shutdown - * - * Description: - * Disable and reset the UART to its initial. This method is called when - * the serial port is closed and also before reconfiguring the UART. - * - ****************************************************************************/ - -static void ez80_shutdown(FAR struct uart_dev_s *dev) -{ - FAR struct ez80_dev_s *priv = (FAR struct ez80_dev_s *)dev->priv; - uint8_t reg; - - /* Make sure that DLAB == 0 */ - - reg = ez80_serialin(priv, EZ80_UART_LCTL); - reg &= ~EZ80_UARTLCTL_DLAB; - ez80_serialout(priv, EZ80_UART_LCTL, reg); - - /* Disable UART interrupts */ - - ez80_disableuartint(priv); - - /* Flush and disable the Tx and Rx FIFOs */ - - reg = ez80_serialin(priv, EZ80_UART_FCTL); - reg |= (EZ80_UARTFCTL_CLRTXF | EZ80_UARTFCTL_CLRRXF); - ez80_serialout(priv, EZ80_UART_FCTL, reg); - ez80_serialout(priv, EZ80_UART_FCTL, 0); - - /* Restore other writable registers to their default state */ - - ez80_serialout(priv, EZ80_UART_MCTL, 0); - ez80_serialout(priv, EZ80_UART_LCTL, 0); -} - -/**************************************************************************** - * Name: ez80_attach - * - * Description: - * Configure the UART to operation in interrupt driven mode. This method - * is called when the serial port is opened. Normally, this is just after - * the the setup() method is called, however, the serial console may - * operate in a non-interrupt driven mode during the boot phase. - * - * RX and TX interrupts are not enabled when by the attach method (unless - * the hardware supports multiple levels of interrupt enabling). The RX - * and TX interrupts are not enabled until the txint() and rxint() methods - * are called. - * - ****************************************************************************/ - -static int ez80_attach(FAR struct uart_dev_s *dev) -{ - FAR struct ez80_dev_s *priv = (FAR struct ez80_dev_s *)dev->priv; - - /* Attach the IRQ */ - - return irq_attach(priv->irq, ez80_interrupt, dev); -} - -/**************************************************************************** - * Name: ez80_detach - * - * Description: - * Detach UART interrupts. This method is called when the serial port is - * closed normally just before the shutdown method is called. The - * exception is the serial console which is never shutdown. - * - ****************************************************************************/ - -static void ez80_detach(FAR struct uart_dev_s *dev) -{ - FAR struct ez80_dev_s *priv = (FAR struct ez80_dev_s *)dev->priv; - ez80_disableuartint(priv); - irq_detach(priv->irq); -} - -/**************************************************************************** - * Name: ez80_interrupt - * - * Description: - * This is the UART interrupt handler. It will be invoked - * when an interrupt received on the 'irq' It should call - * uart_transmitchars or uart_receivechar to perform the - * appropriate data transfers. The interrupt handling logic\ - * must be able to map the 'irq' number into the appropriate - * uart_dev_s structure in order to call these functions. - * - ****************************************************************************/ - -static int ez80_interrupt(int irq, FAR void *context, FAR void *arg) -{ - FAR struct uart_dev_s *dev = (FAR struct uart_dev_s *)arg; - struct ez80_dev_s *priv; - volatile uint32_t cause; - - DEBUGASSERT(dev != NULL && dev->priv != NULL); - priv = (struct ez80_dev_s *)dev->priv; - - cause = ez80_serialin(priv, EZ80_UART_IIR) & EZ80_UARTIIR_CAUSEMASK; - - /* Check for character timeout (CTO) or Receiver Data Ready (RDR) */ - - if (cause == EZ80_UARTINSTS_CTO || cause == EZ80_UARTINSTS_RDR) - { - /* Receive characters from the RX fifo */ - - uart_recvchars(dev); - } - - /* Check for transmission buffer empty */ - - else if (cause == EZ80_UARTINSTS_TBE) - { - uart_xmitchars(dev); - } - - return OK; -} - -/**************************************************************************** - * Name: ez80_ioctl - * - * Description: - * All ioctl calls will be routed through this method - * - ****************************************************************************/ - -static int ez80_ioctl(FAR struct file *filep, int cmd, unsigned long arg) -{ - return -ENOTTY; -} - -/**************************************************************************** - * Name: ez80_receive - * - * Description: - * Called (usually) from the interrupt level to receive one character from - * the UART. Error bits associated with the receipt are provided in the - * the return 'status'. - * - ****************************************************************************/ - -static int ez80_receive(FAR struct uart_dev_s *dev, FAR unsigned int *status) -{ - FAR struct ez80_dev_s *priv = (FAR struct ez80_dev_s *)dev->priv; - uint8_t rbr = ez80_serialin(priv, EZ80_UART_RBR); - uint8_t lsr = ez80_serialin(priv, EZ80_UART_LSR); - - *status = (unsigned int)lsr; - return rbr; -} - -/**************************************************************************** - * Name: ez80_rxint - * - * Description: - * Call to enable or disable RX interrupts - * - ****************************************************************************/ - -static void ez80_rxint(FAR struct uart_dev_s *dev, bool enable) -{ - FAR struct ez80_dev_s *priv = (FAR struct ez80_dev_s *)dev->priv; - uint8_t ier = ez80_serialin(priv, EZ80_UART_IER); - - if (enable) - { -#ifndef CONFIG_SUPPRESS_SERIAL_INTS - ier |= EZ80_UARTEIR_RIE; - ez80_serialout(priv, EZ80_UART_IER, ier); -#endif - } - else - { - ier &= ~EZ80_UARTEIR_RIE; - ez80_serialout(priv, EZ80_UART_IER, ier); - } -} - -/**************************************************************************** - * Name: ez80_rxavailable - * - * Description: - * Return true if the receive fifo is not empty - * - ****************************************************************************/ - -static bool ez80_rxavailable(FAR struct uart_dev_s *dev) -{ - FAR struct ez80_dev_s *priv = (FAR struct ez80_dev_s *)dev->priv; - return (ez80_serialin(priv, EZ80_UART_LSR) & EZ80_UARTLSR_DR) != 0; -} - -/**************************************************************************** - * Name: ez80_send - * - * Description: - * This method will send one byte on the UART - * - ****************************************************************************/ - -static void ez80_send(FAR struct uart_dev_s *dev, int ch) -{ - FAR struct ez80_dev_s *priv = (FAR struct ez80_dev_s *)dev->priv; - ez80_serialout(priv, EZ80_UART_THR, (uint8_t)ch); -} - -/**************************************************************************** - * Name: ez80_txint - * - * Description: - * Call to enable or disable TX interrupts - * - ****************************************************************************/ - -static void ez80_txint(FAR struct uart_dev_s *dev, bool enable) -{ - FAR struct ez80_dev_s *priv = (FAR struct ez80_dev_s *)dev->priv; - uint8_t ier = ez80_serialin(priv, EZ80_UART_IER); - - if (enable) - { -#ifndef CONFIG_SUPPRESS_SERIAL_INTS - ier |= EZ80_UARTEIR_TIE; - ez80_serialout(priv, EZ80_UART_IER, ier); -#endif - } - else - { - ier &= ~EZ80_UARTEIR_TIE; - ez80_serialout(priv, EZ80_UART_IER, ier); - } -} - -/**************************************************************************** - * Name: ez80_txready - * - * Description: - * Return true if the transmit fifo is not full - * - ****************************************************************************/ - -static bool ez80_txready(FAR struct uart_dev_s *dev) -{ - FAR struct ez80_dev_s *priv = (FAR struct ez80_dev_s *)dev->priv; - return (ez80_serialin(priv, EZ80_UART_LSR) & EZ80_UARTLSR_THRE) != 0; -} - -/**************************************************************************** - * Name: ez80_txempty - * - * Description: - * Return true if the transmit fifo is empty - * - ****************************************************************************/ - -static bool ez80_txempty(FAR struct uart_dev_s *dev) -{ - FAR struct ez80_dev_s *priv = (FAR struct ez80_dev_s *)dev->priv; - return (ez80_serialin(priv, EZ80_UART_LSR) & EZ80_UARTLSR_TEMT) != 0; -} - -/**************************************************************************** - * Public Functions - ****************************************************************************/ - -/**************************************************************************** - * Name: z80_serial_initialize - * - * Description: - * Register serial console and serial ports. - * - ****************************************************************************/ - -void z80_serial_initialize(void) -{ - uint8_t regval; - - /* Make sure that all UART interrupts are disabled */ - - ez80_disableuartint(TTYS0_DEV.priv); -#ifdef TTYS1_DEV - ez80_disableuartint(TTYS1_DEV.priv); -#endif - - /* Configure pins for usage of UARTs */ - -#ifdef CONFIG_EZ80_UART0 - /* Set Port D, pins 0 and 1 for their alternate function (Mode 7) to enable UART0 */ - - regval = inp(EZ80_PD_DDR); - regval |= 3; - outp(EZ80_PD_DDR, regval); - - regval = inp(EZ80_PD_ALT1); - regval &= ~3; - outp(EZ80_PD_ALT1, regval); - - regval = inp(EZ80_PD_ALT2); - regval |= 3; - outp(EZ80_PD_ALT2, regval); -#endif - -#ifdef CONFIG_EZ80_UART1 - /* Set Port C, pins 0 and 1 for their alternate function (Mode 7) to enable UART1 */ - - regval = inp(EZ80_PC_DDR); - regval |= 3; - outp(EZ80_PC_DDR, regval); - - regval = inp(EZ80_PC_ALT1); - regval &= ~3; - outp(EZ80_PC_ALT1, regval); - - regval = inp(EZ80_PC_ALT2); - regval |= 3; - outp(EZ80_PC_ALT2, regval); -#endif - - /* If there is a console, then configure the console now */ - -#ifdef CONSOLE_DEV - CONSOLE_DEV.isconsole = true; - ez80_setup(&CONSOLE_DEV); -#endif - - /* Register console and tty devices */ - -#ifdef CONSOLE_DEV - uart_register("/dev/console", &CONSOLE_DEV); -#endif - uart_register("/dev/ttyS0", &TTYS0_DEV); -#ifdef TTYS1_DEV - uart_register("/dev/ttyS1", &TTYS1_DEV); -#endif -} - -/**************************************************************************** - * Name: up_putc - * - * Description: - * Provide priority, low-level access to support OS debug - * writes - * - ****************************************************************************/ - -int up_putc(int ch) -{ -#ifdef CONSOLE_DEV - FAR struct ez80_dev_s *priv = (FAR struct ez80_dev_s *)CONSOLE_DEV.priv; - uint8_t ier = ez80_serialin(priv, EZ80_UART_IER); - - ez80_disableuartint(priv); - - /* Check for LF */ - - if (ch == '\n') - { - /* Output CR before LF*/ - - ez80_waittxready(priv); - ez80_serialout(priv, EZ80_UART_THR, '\r'); - } - - /* Output the character */ - - ez80_waittxready(priv); - ez80_serialout(priv, EZ80_UART_THR, (uint8_t)ch); - - /* Wait for the character to be sent before re-enabling interrupts */ - - ez80_waittxready(priv); - ez80_restoreuartint(priv, ier); - return ch; -#endif -} - -#else /* USE_SERIALDRIVER */ - -/**************************************************************************** - * Pre-processor Definitions - ****************************************************************************/ - -#ifdef CONFIG_UART1_SERIAL_CONSOLE -# define ez80_inp(offs) inp((EZ80_UART1_BASE+(offs))) -# define ez80_outp(offs,val) outp((EZ80_UART1_BASE+(offs)), (val)) -#else -# define ez80_inp(offs) inp((EZ80_UART0_BASE+(offs))) -# define ez80_outp(offs,val) outp((EZ80_UART0_BASE+(offs)), (val)) -#endif - -#define ez80_txready() ((ez80_inp(EZ80_UART_LSR) & EZ80_UARTLSR_THRE) != 0) -#define ez80_send(ch) ez80_outp(EZ80_UART_THR, ch) - -/**************************************************************************** - * Private Functions - ****************************************************************************/ - -/**************************************************************************** - * Name: ez80_putc - ****************************************************************************/ - -static void ez80_putc(int ch) -{ - int tmp; - for (tmp = 1000 ; tmp > 0 && !ez80_txready(); tmp--); - ez80_send(ch); -} - -/**************************************************************************** - * Public Functions - ****************************************************************************/ - -/**************************************************************************** - * Name: up_putc - ****************************************************************************/ - -int up_putc(int ch) -{ - /* Check for LF */ - - if (ch == '\n') - { - /* Output CR before LF */ - - ez80_putc('\r'); - } - - /* Output character */ - - ez80_putc(ch); - return ch; -} - -#endif /* USE_SERIALDRIVER */