nios2: Move serial drivers to individual files in drivers/serial

   The standard Altera UART & JTAG UART as well as the OpenCores
   YANU driver are now in individual files in drivers/serial
   rather than a single file uner cpu/nios2.

Signed-off-by: Scott McNutt <smcnutt@psyent.com>

cpu/nios2/Makefile

@@ -27,7 +27,7 @@ LIB	= $(obj)lib$(CPU).a
 
 START	= start.o
 SOBJS	= exceptions.o
-COBJS	= cpu.o interrupts.o serial.o sysid.o traps.o epcs.o
+COBJS	= cpu.o interrupts.o sysid.o traps.o epcs.o
 
 SRCS	:= $(START:.o=.S) $(SOBJS:.o=.S) $(COBJS:.o=.c)
 OBJS	:= $(addprefix $(obj),$(SOBJS) $(COBJS))

drivers/serial/Makefile

@@ -25,11 +25,14 @@ include $(TOPDIR)/config.mk
 
 LIB	:= $(obj)libserial.a
 
+COBJS-$(CONFIG_ALTERA_UART) += altera_uart.o
+COBJS-$(CONFIG_ALTERA_JTAG_UART) += altera_jtag_uart.o
 COBJS-$(CONFIG_ARM_DCC) += arm_dcc.o
 COBJS-$(CONFIG_AT91RM9200_USART) += at91rm9200_usart.o
 COBJS-$(CONFIG_ATMEL_USART) += atmel_usart.o
 COBJS-$(CONFIG_MCFUART) += mcfuart.o
 COBJS-$(CONFIG_NS9750_UART) += ns9750_serial.o
+COBJS-$(CONFIG_OPENCORES_YANU) += opencores_yanu.o
 COBJS-$(CONFIG_SYS_NS16550) += ns16550.o
 COBJS-$(CONFIG_DRIVER_S3C4510_UART) += s3c4510b_uart.o
 COBJS-$(CONFIG_S3C64XX) += s3c64xx.o

drivers/serial/altera_jtag_uart.c

@@ -0,0 +1,70 @@
+/*
+ * (C) Copyright 2004, Psyent Corporation <www.psyent.com>
+ * Scott McNutt <smcnutt@psyent.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>
+#include <watchdog.h>
+#include <asm/io.h>
+#include <nios2-io.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/*------------------------------------------------------------------
+ * JTAG acts as the serial port
+ *-----------------------------------------------------------------*/
+static nios_jtag_t *jtag = (nios_jtag_t *)CONFIG_SYS_NIOS_CONSOLE;
+
+void serial_setbrg( void ){ return; }
+int serial_init( void ) { return(0);}
+
+void serial_putc (char c)
+{
+	while (NIOS_JTAG_WSPACE ( readl (&jtag->control)) == 0)
+		WATCHDOG_RESET ();
+	writel (&jtag->data, (unsigned char)c);
+}
+
+void serial_puts (const char *s)
+{
+	while (*s != 0)
+		serial_putc (*s++);
+}
+
+int serial_tstc (void)
+{
+	return ( readl (&jtag->control) & NIOS_JTAG_RRDY);
+}
+
+int serial_getc (void)
+{
+	int c;
+	unsigned val;
+
+	while (1) {
+		WATCHDOG_RESET ();
+		val = readl (&jtag->data);
+		if (val & NIOS_JTAG_RVALID)
+			break;
+	}
+	c = val & 0x0ff;
+	return (c);
+}

drivers/serial/altera_uart.c

@@ -0,0 +1,94 @@
+/*
+ * (C) Copyright 2004, Psyent Corporation <www.psyent.com>
+ * Scott McNutt <smcnutt@psyent.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>
+#include <watchdog.h>
+#include <asm/io.h>
+#include <nios2-io.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/*------------------------------------------------------------------
+ * UART the serial port
+ *-----------------------------------------------------------------*/
+
+static nios_uart_t *uart = (nios_uart_t *) CONFIG_SYS_NIOS_CONSOLE;
+
+#if defined(CONFIG_SYS_NIOS_FIXEDBAUD)
+
+/* Everything's already setup for fixed-baud PTF
+ * assignment
+ */
+void serial_setbrg (void){ return; }
+int serial_init (void) { return (0);}
+
+#else
+
+void serial_setbrg (void)
+{
+	unsigned div;
+
+	div = (CONFIG_SYS_CLK_FREQ/gd->baudrate)-1;
+	writel (&uart->divisor,div);
+	return;
+}
+
+int serial_init (void)
+{
+	serial_setbrg ();
+	return (0);
+}
+
+#endif /* CONFIG_SYS_NIOS_FIXEDBAUD */
+
+/*-----------------------------------------------------------------------
+ * UART CONSOLE
+ *---------------------------------------------------------------------*/
+void serial_putc (char c)
+{
+	if (c == '\n')
+		serial_putc ('\r');
+	while ((readl (&uart->status) & NIOS_UART_TRDY) == 0)
+		WATCHDOG_RESET ();
+	writel (&uart->txdata,(unsigned char)c);
+}
+
+void serial_puts (const char *s)
+{
+	while (*s != 0) {
+		serial_putc (*s++);
+	}
+}
+
+int serial_tstc (void)
+{
+	return (readl (&uart->status) & NIOS_UART_RRDY);
+}
+
+int serial_getc (void)
+{
+	while (serial_tstc () == 0)
+		WATCHDOG_RESET ();
+	return (readl (&uart->rxdata) & 0x00ff );
+}

cpu/nios2/serial.c → drivers/serial/opencores_yanu.c

@@ -1,8 +1,4 @@
 /*
- * (C) Copyright 2004, Psyent Corporation <www.psyent.com>
- * Scott McNutt <smcnutt@psyent.com>
- *
- * YANU Support:
  * Copyright 2010, Renato Andreola <renato.andreola@imagos.it>
  *
  * See file CREDITS for list of people who contributed to this
@@ -24,61 +20,13 @@
  * MA 02111-1307 USA
  */
 
-
 #include <common.h>
 #include <watchdog.h>
 #include <asm/io.h>
-#include <nios2-io.h>
 #include <nios2-yanu.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
-/*------------------------------------------------------------------
- * JTAG acts as the serial port
- *-----------------------------------------------------------------*/
-#if defined(CONFIG_CONSOLE_JTAG)
-
-static nios_jtag_t *jtag = (nios_jtag_t *)CONFIG_SYS_NIOS_CONSOLE;
-
-void serial_setbrg( void ){ return; }
-int serial_init( void ) { return(0);}
-
-void serial_putc (char c)
-{
-	unsigned val;
-
-	while (NIOS_JTAG_WSPACE ( readl (&jtag->control)) == 0)
-		WATCHDOG_RESET ();
-	writel (&jtag->data, (unsigned char)c);
-}
-
-void serial_puts (const char *s)
-{
-	while (*s != 0)
-		serial_putc (*s++);
-}
-
-int serial_tstc (void)
-{
-	return ( readl (&jtag->control) & NIOS_JTAG_RRDY);
-}
-
-int serial_getc (void)
-{
-	int c;
-	unsigned val;
-
-	while (1) {
-		WATCHDOG_RESET ();
-		val = readl (&jtag->data);
-		if (val & NIOS_JTAG_RVALID)
-			break;
-	}
-	c = val & 0x0ff;
-	return (c);
-}
-
-#elif defined(CONFIG_CONSOLE_YANU)
 /*-----------------------------------------------------------------*/
 /* YANU Imagos serial port */
 /*-----------------------------------------------------------------*/
@@ -238,72 +186,3 @@ int serial_getc (void)
 
 	return(readl(&uart->data) & YANU_DATA_CHAR_MASK);
 }
-
-#else /*CONFIG_CONSOLE_YANU*/
-
-/*------------------------------------------------------------------
- * UART the serial port
- *-----------------------------------------------------------------*/
-
-static nios_uart_t *uart = (nios_uart_t *) CONFIG_SYS_NIOS_CONSOLE;
-
-#if defined(CONFIG_SYS_NIOS_FIXEDBAUD)
-
-/* Everything's already setup for fixed-baud PTF
- * assignment
- */
-void serial_setbrg (void){ return; }
-int serial_init (void) { return (0);}
-
-#else
-
-void serial_setbrg (void)
-{
-	unsigned div;
-
-	div = (CONFIG_SYS_CLK_FREQ/gd->baudrate)-1;
-	writel (&uart->divisor,div);
-	return;
-}
-
-int serial_init (void)
-{
-	serial_setbrg ();
-	return (0);
-}
-
-#endif /* CONFIG_SYS_NIOS_FIXEDBAUD */
-
-
-/*-----------------------------------------------------------------------
- * UART CONSOLE
- *---------------------------------------------------------------------*/
-void serial_putc (char c)
-{
-	if (c == '\n')
-		serial_putc ('\r');
-	while ((readl (&uart->status) & NIOS_UART_TRDY) == 0)
-		WATCHDOG_RESET ();
-	writel (&uart->txdata,(unsigned char)c);
-}
-
-void serial_puts (const char *s)
-{
-	while (*s != 0) {
-		serial_putc (*s++);
-	}
-}
-
-int serial_tstc (void)
-{
-	return (readl (&uart->status) & NIOS_UART_RRDY);
-}
-
-int serial_getc (void)
-{
-	while (serial_tstc () == 0)
-		WATCHDOG_RESET ();
-	return (readl (&uart->rxdata) & 0x00ff );
-}
-
-#endif /* CONFIG_JTAG_CONSOLE */

include/configs/EP1C20.h

@@ -94,7 +94,8 @@
 /*------------------------------------------------------------------------
  * CONSOLE
  *----------------------------------------------------------------------*/
-#if defined(CONFIG_CONSOLE_JTAG)
+#define CONFIG_ALTERA_UART		1	/* Use altera uart */
+#if defined(CONFIG_ALTERA_JTAG_UART)
 #define CONFIG_SYS_NIOS_CONSOLE	0x021208b0	/* JTAG UART base addr	*/
 #else
 #define CONFIG_SYS_NIOS_CONSOLE	0x02120840	/* UART base addr	*/

include/configs/EP1S10.h

@@ -92,7 +92,8 @@
 /*------------------------------------------------------------------------
  * CONSOLE
  *----------------------------------------------------------------------*/
-#if defined(CONFIG_CONSOLE_JTAG)
+#define CONFIG_ALTERA_UART		1	/* Use altera uart */
+#if defined(CONFIG_ALTERA_JTAG_UART)
 #define CONFIG_SYS_NIOS_CONSOLE	0x021208b0	/* JTAG UART base addr	*/
 #else
 #define CONFIG_SYS_NIOS_CONSOLE	0x02120840	/* UART base addr	*/

include/configs/EP1S40.h

@@ -92,7 +92,8 @@
 /*------------------------------------------------------------------------
  * CONSOLE
  *----------------------------------------------------------------------*/
-#if defined(CONFIG_CONSOLE_JTAG)
+#define CONFIG_ALTERA_UART		1	/* Use altera uart */
+#if defined(CONFIG_ALTERA_JTAG_UART)
 #define CONFIG_SYS_NIOS_CONSOLE	0x021208b0	/* JTAG UART base addr	*/
 #else
 #define CONFIG_SYS_NIOS_CONSOLE	0x02120840	/* UART base addr	*/

include/configs/PCI5441.h

@@ -92,7 +92,8 @@
 /*------------------------------------------------------------------------
  * CONSOLE
  *----------------------------------------------------------------------*/
-#if defined(CONFIG_CONSOLE_JTAG)
+#define CONFIG_ALTERA_UART		1	/* Use altera uart */
+#if defined(CONFIG_ALTERA_JTAG_UART)
 #define CONFIG_SYS_NIOS_CONSOLE	0x00920820	/* JTAG UART base addr	*/
 #else
 #define CONFIG_SYS_NIOS_CONSOLE	0x009208a0	/* UART base addr	*/

include/configs/PK1C20.h

@@ -94,7 +94,8 @@
 /*------------------------------------------------------------------------
  * CONSOLE
  *----------------------------------------------------------------------*/
-#if defined(CONFIG_CONSOLE_JTAG)
+#define CONFIG_ALTERA_UART		1	/* Use altera uart */
+#if defined(CONFIG_ALTERA_JTAG_UART)
 #define CONFIG_SYS_NIOS_CONSOLE	0x021208b0	/* JTAG UART base addr	*/
 #else
 #define CONFIG_SYS_NIOS_CONSOLE	0x02120840	/* UART base addr	*/