bsps: Move console drivers to bsps

This patch is a part of the BSP source reorganization.

Update #3285.

1 files changed, 242 insertions, 0 deletions

diff --git a/bsps/arm/smdk2410/console/uart.c b/bsps/arm/smdk2410/console/uart.c
new file mode 100644
index 0000000000..06adecf239
--- /dev/null
+++ b/bsps/arm/smdk2410/console/uart.c
@@ -0,0 +1,242 @@
+/*
+ *  console driver for S3C2400 UARTs
+ *
+ *  This driver uses the shared console driver in
+ *  ...../libbsp/shared/console.c
+ *
+ *  If you want the driver to be interrupt driven, you
+ *  need to write the ISR, and in the ISR insert the
+ *  chars into termios's queue.
+ *
+ *  Copyright (c) 2004 Cogent Computer Systems
+ *  Written by Jay Monkman <jtm@lopingdog.com>
+ *
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *  http://www.rtems.org/license/LICENSE.
+*/
+#include <bsp.h>                /* Must be before libio.h */
+#include <rtems/libio.h>
+#include <termios.h>
+#include <rtems/bspIo.h>
+
+/* Put the CPU (or UART) specific header file #include here */
+#include <s3c24xx.h>
+#include <libchip/serial.h>
+#include <libchip/sersupp.h>
+
+/* How many serial ports? */
+#define NUM_DEVS       1
+
+int     uart_poll_read(int minor);
+
+int dbg_dly;
+
+/* static function prototypes */
+static int     uart_first_open(int major, int minor, void *arg);
+static int     uart_last_close(int major, int minor, void *arg);
+static int     uart_read(int minor);
+static ssize_t uart_write(int minor, const char *buf, size_t len);
+static void    uart_init(int minor);
+static void    uart_write_polled(int minor, char c);
+static int     uart_set_attributes(int minor, const struct termios *t);
+
+/* These are used by code in console.c */
+unsigned long Console_Configuration_Count = NUM_DEVS;
+
+/* Pointers to functions for handling the UART. */
+const console_fns uart_fns =
+{
+    libchip_serial_default_probe,
+    uart_first_open,
+    uart_last_close,
+    uart_read,
+    uart_write,
+    uart_init,
+    uart_write_polled,   /* not used in this driver */
+    uart_set_attributes,
+    FALSE      /* TRUE if interrupt driven, FALSE if not. */
+};
+
+/*
+ * There's one item in array for each UART.
+ *
+ * Some of these fields are marked "NOT USED". They are not used
+ * by console.c, but may be used by drivers in libchip
+ *
+ */
+console_tbl Console_Configuration_Ports[] = {
+    {
+        "/dev/com0",                      /* sDeviceName */
+        SERIAL_CUSTOM,                    /* deviceType */
+        &uart_fns,                        /* pDeviceFns */
+        NULL,                             /* deviceProbe */
+        NULL,                             /* pDeviceFlow */
+        0,                                /* ulMargin - NOT USED */
+        0,                                /* ulHysteresis - NOT USED */
+        NULL,                             /* pDeviceParams */
+        0,                                /* ulCtrlPort1  - NOT USED */
+        0,                                /* ulCtrlPort2  - NOT USED */
+        0,                                /* ulDataPort  - NOT USED */
+        NULL,                             /* getRegister - NOT USED */
+        NULL,                             /* setRegister - NOT USED */
+        NULL,                             /* getData - NOT USED */
+        NULL,                             /* setData - NOT USED */
+        0,                                /* ulClock - NOT USED */
+        0                                 /* ulIntVector - NOT USED */
+    }
+};
+
+/*********************************************************************/
+/* Functions called via termios callbacks (i.e. the ones in uart_fns */
+/*********************************************************************/
+
+/*
+ * This is called the first time each device is opened. If the driver
+ * is interrupt driven, you should enable interrupts here. Otherwise,
+ * it's probably safe to do nothing.
+ *
+ * Since micromonitor already set up the UART, we do nothing.
+ */
+static int uart_first_open(int major, int minor, void *arg)
+{
+    return 0;
+}
+
+
+/*
+ * This is called the last time each device is closed. If the driver
+ * is interrupt driven, you should disable interrupts here. Otherwise,
+ * it's probably safe to do nothing.
+ */
+static int uart_last_close(int major, int minor, void *arg)
+{
+    return 0;
+}
+
+
+/*
+ * Read one character from UART.
+ *
+ * Return -1 if there's no data, otherwise return
+ * the character in lowest 8 bits of returned int.
+ */
+static int uart_read(int minor)
+{
+    char c;
+
+    if (minor == 0) {
+        if (rUTRSTAT0 & 0x1) {
+            c = rURXH0 & 0xff;
+            return c;
+        } else {
+            return -1;
+        }
+    } else {
+        printk("Unknown console minor number: %d\n", minor);
+        return -1;
+    }
+
+}
+
+
+/*
+ * Write buffer to UART
+ *
+ * return 1 on success, -1 on error
+ */
+static ssize_t uart_write(int minor, const char *buf, size_t len)
+{
+    int i;
+
+    if (minor == 0) {
+        for (i = 0; i < len; i++) {
+            /* Wait for fifo to have room */
+            while(!(rUTRSTAT0 & 0x2)) {
+                continue;
+            }
+
+           rUTXH0 = (char) buf[i];
+        }
+    } else {
+        printk("Unknown console minor number: %d\n", minor);
+        return -1;
+    }
+
+    return 1;
+}
+
+
+/* Set up the UART. */
+static void uart_init(int minor)
+{
+	int i;
+	unsigned int reg = 0;
+
+	/* enable UART0 */
+	rCLKCON|=0x100;
+
+	/* value is calculated so : (int)(PCLK/16./baudrate) -1 */
+	reg = get_PCLK() / (16 * 115200) - 1;
+
+	/* FIFO enable, Tx/Rx FIFO clear */
+	rUFCON0 = 0x07;
+	rUMCON0 = 0x0;
+	/* Normal,No parity,1 stop,8 bit */
+	rULCON0 = 0x3;
+	/*
+	 * tx=level,rx=edge,disable timeout int.,enable rx error int.,
+	 * normal,interrupt or polling
+	 */
+	rUCON0 = 0x245;
+	rUBRDIV0 = reg;
+
+	for (i = 0; i < 100; i++);
+
+}
+
+/* I'm not sure this is needed for the shared console driver. */
+static void    uart_write_polled(int minor, char c)
+{
+    uart_write(minor, &c, 1);
+}
+
+/* This is for setting baud rate, bits, etc. */
+static int     uart_set_attributes(int minor, const struct termios *t)
+{
+    return 0;
+}
+
+/***********************************************************************/
+/*
+ * The following functions are not used by TERMIOS, but other RTEMS
+ * functions use them instead.
+ */
+/***********************************************************************/
+/*
+ * Read from UART. This is used in the exit code, and can't
+ * rely on interrupts.
+*/
+int uart_poll_read(int minor)
+{
+    return uart_read(minor);
+}
+
+
+/*
+ * Write a character to the console. This is used by printk() and
+ * maybe other low level functions. It should not use interrupts or any
+ * RTEMS system calls. It needs to be very simple
+ */
+static void _BSP_put_char( char c ) {
+    uart_write_polled(0, c);
+}
+
+BSP_output_char_function_type BSP_output_char = _BSP_put_char;
+
+static int _BSP_get_char(void)
+{
+  return uart_poll_read(0);
+}
+
+BSP_polling_getchar_function_type BSP_poll_char = _BSP_get_char;