Merge commit '87ddedd'

1 files changed, 326 insertions, 0 deletions

diff --git a/drivers/serial/serial.c b/drivers/serial/serial.c
new file mode 100644
index 0000000..76425d8
--- /dev/null
+++ b/drivers/serial/serial.c
@@ -0,0 +1,326 @@
+/*
+ * (C) Copyright 2000
+ * Rob Taylor, Flying Pig Systems. robt@flyingpig.com.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+
+#ifdef CFG_NS16550_SERIAL
+
+#include <ns16550.h>
+#ifdef CFG_NS87308
+#include <ns87308.h>
+#endif
+
+#if defined (CONFIG_SERIAL_MULTI)
+#include <serial.h>
+#endif
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#if !defined(CONFIG_CONS_INDEX)
+#if defined (CONFIG_SERIAL_MULTI)
+/*   with CONFIG_SERIAL_MULTI we might have no console
+ *  on these devices
+ */
+#else
+#error	"No console index specified."
+#endif /* CONFIG_SERIAL_MULTI */
+#elif (CONFIG_CONS_INDEX < 1) || (CONFIG_CONS_INDEX > 4)
+#error	"Invalid console index value."
+#endif
+
+#if CONFIG_CONS_INDEX == 1 && !defined(CFG_NS16550_COM1)
+#error	"Console port 1 defined but not configured."
+#elif CONFIG_CONS_INDEX == 2 && !defined(CFG_NS16550_COM2)
+#error	"Console port 2 defined but not configured."
+#elif CONFIG_CONS_INDEX == 3 && !defined(CFG_NS16550_COM3)
+#error	"Console port 3 defined but not configured."
+#elif CONFIG_CONS_INDEX == 4 && !defined(CFG_NS16550_COM4)
+#error	"Console port 4 defined but not configured."
+#endif
+
+/* Note: The port number specified in the functions is 1 based.
+ *	 the array is 0 based.
+ */
+static NS16550_t serial_ports[4] = {
+#ifdef CFG_NS16550_COM1
+	(NS16550_t)CFG_NS16550_COM1,
+#else
+	NULL,
+#endif
+#ifdef CFG_NS16550_COM2
+	(NS16550_t)CFG_NS16550_COM2,
+#else
+	NULL,
+#endif
+#ifdef CFG_NS16550_COM3
+	(NS16550_t)CFG_NS16550_COM3,
+#else
+	NULL,
+#endif
+#ifdef CFG_NS16550_COM4
+	(NS16550_t)CFG_NS16550_COM4
+#else
+	NULL
+#endif
+};
+
+#define PORT	serial_ports[port-1]
+#if defined(CONFIG_CONS_INDEX)
+#define CONSOLE	(serial_ports[CONFIG_CONS_INDEX-1])
+#endif
+
+#if defined(CONFIG_SERIAL_MULTI)
+
+/* Multi serial device functions */
+#define DECLARE_ESERIAL_FUNCTIONS(port) \
+    int  eserial##port##_init (void) {\
+	int clock_divisor; \
+	clock_divisor = calc_divisor(serial_ports[port-1]); \
+	NS16550_init(serial_ports[port-1], clock_divisor); \
+	return(0);}\
+    void eserial##port##_setbrg (void) {\
+	serial_setbrg_dev(port);}\
+    int  eserial##port##_getc (void) {\
+	return serial_getc_dev(port);}\
+    int  eserial##port##_tstc (void) {\
+	return serial_tstc_dev(port);}\
+    void eserial##port##_putc (const char c) {\
+	serial_putc_dev(port, c);}\
+    void eserial##port##_puts (const char *s) {\
+	serial_puts_dev(port, s);}
+
+/* Serial device descriptor */
+#define INIT_ESERIAL_STRUCTURE(port,name,bus) {\
+	name,\
+	bus,\
+	eserial##port##_init,\
+	eserial##port##_setbrg,\
+	eserial##port##_getc,\
+	eserial##port##_tstc,\
+	eserial##port##_putc,\
+	eserial##port##_puts, }
+
+#endif /* CONFIG_SERIAL_MULTI */
+
+static int calc_divisor (NS16550_t port)
+{
+#ifdef CONFIG_OMAP1510
+	/* If can't cleanly clock 115200 set div to 1 */
+	if ((CFG_NS16550_CLK == 12000000) && (gd->baudrate == 115200)) {
+		port->osc_12m_sel = OSC_12M_SEL;	/* enable 6.5 * divisor */
+		return (1);				/* return 1 for base divisor */
+	}
+	port->osc_12m_sel = 0;			/* clear if previsouly set */
+#endif
+#ifdef CONFIG_OMAP1610
+	/* If can't cleanly clock 115200 set div to 1 */
+	if ((CFG_NS16550_CLK == 48000000) && (gd->baudrate == 115200)) {
+		return (26);		/* return 26 for base divisor */
+	}
+#endif
+
+#ifdef CONFIG_APTIX
+#define MODE_X_DIV 13
+#else
+#define MODE_X_DIV 16
+#endif
+	return (CFG_NS16550_CLK / MODE_X_DIV / gd->baudrate);
+
+}
+
+#if !defined(CONFIG_SERIAL_MULTI)
+int serial_init (void)
+{
+	int clock_divisor;
+
+#ifdef CFG_NS87308
+	initialise_ns87308();
+#endif
+
+#ifdef CFG_NS16550_COM1
+	clock_divisor = calc_divisor(serial_ports[0]);
+	NS16550_init(serial_ports[0], clock_divisor);
+#endif
+#ifdef CFG_NS16550_COM2
+	clock_divisor = calc_divisor(serial_ports[1]);
+	NS16550_init(serial_ports[1], clock_divisor);
+#endif
+#ifdef CFG_NS16550_COM3
+	clock_divisor = calc_divisor(serial_ports[2]);
+	NS16550_init(serial_ports[2], clock_divisor);
+#endif
+#ifdef CFG_NS16550_COM4
+	clock_divisor = calc_divisor(serial_ports[3]);
+	NS16550_init(serial_ports[3], clock_divisor);
+#endif
+
+	return (0);
+}
+#endif
+
+void
+_serial_putc(const char c,const int port)
+{
+	if (c == '\n')
+		NS16550_putc(PORT, '\r');
+
+	NS16550_putc(PORT, c);
+}
+
+void
+_serial_putc_raw(const char c,const int port)
+{
+	NS16550_putc(PORT, c);
+}
+
+void
+_serial_puts (const char *s,const int port)
+{
+	while (*s) {
+		_serial_putc (*s++,port);
+	}
+}
+
+
+int
+_serial_getc(const int port)
+{
+	return NS16550_getc(PORT);
+}
+
+int
+_serial_tstc(const int port)
+{
+	return NS16550_tstc(PORT);
+}
+
+void
+_serial_setbrg (const int port)
+{
+	int clock_divisor;
+
+	clock_divisor = calc_divisor(PORT);
+	NS16550_reinit(PORT, clock_divisor);
+}
+
+#if defined(CONFIG_SERIAL_MULTI)
+static inline void
+serial_putc_dev(unsigned int dev_index,const char c)
+{
+	_serial_putc(c,dev_index);
+}
+#else
+void
+serial_putc(const char c)
+{
+	_serial_putc(c,CONFIG_CONS_INDEX);
+}
+#endif
+
+#if defined(CONFIG_SERIAL_MULTI)
+static inline void
+serial_putc_raw_dev(unsigned int dev_index,const char c)
+{
+	_serial_putc_raw(c,dev_index);
+}
+#else
+void
+serial_putc_raw(const char c)
+{
+	_serial_putc_raw(c,CONFIG_CONS_INDEX);
+}
+#endif
+
+#if defined(CONFIG_SERIAL_MULTI)
+static inline void
+serial_puts_dev(unsigned int dev_index,const char *s)
+{
+	_serial_puts(s,dev_index);
+}
+#else
+void
+serial_puts(const char *s)
+{
+	_serial_puts(s,CONFIG_CONS_INDEX);
+}
+#endif
+
+#if defined(CONFIG_SERIAL_MULTI)
+static inline int
+serial_getc_dev(unsigned int dev_index)
+{
+	return _serial_getc(dev_index);
+}
+#else
+int
+serial_getc(void)
+{
+	return _serial_getc(CONFIG_CONS_INDEX);
+}
+#endif
+
+#if defined(CONFIG_SERIAL_MULTI)
+static inline int
+serial_tstc_dev(unsigned int dev_index)
+{
+	return _serial_tstc(dev_index);
+}
+#else
+int
+serial_tstc(void)
+{
+	return _serial_tstc(CONFIG_CONS_INDEX);
+}
+#endif
+
+#if defined(CONFIG_SERIAL_MULTI)
+static inline void
+serial_setbrg_dev(unsigned int dev_index)
+{
+	_serial_setbrg(dev_index);
+}
+#else
+void
+serial_setbrg(void)
+{
+	_serial_setbrg(CONFIG_CONS_INDEX);
+}
+#endif
+
+#if defined(CONFIG_SERIAL_MULTI)
+
+DECLARE_ESERIAL_FUNCTIONS(1);
+struct serial_device eserial1_device =
+	INIT_ESERIAL_STRUCTURE(1,"eserial0","EUART1");
+DECLARE_ESERIAL_FUNCTIONS(2);
+struct serial_device eserial2_device =
+	INIT_ESERIAL_STRUCTURE(2,"eserial1","EUART2");
+DECLARE_ESERIAL_FUNCTIONS(3);
+struct serial_device eserial3_device =
+	INIT_ESERIAL_STRUCTURE(3,"eserial2","EUART3");
+DECLARE_ESERIAL_FUNCTIONS(4);
+struct serial_device eserial4_device =
+	INIT_ESERIAL_STRUCTURE(4,"eserial3","EUART4");
+#endif /* CONFIG_SERIAL_MULTI */
+
+#endif