Add support for boards with no serial ports

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1512 42af7a65-404d-4744-a932-0658087f49c3

arch/sh/src/common/up_initialize.c

@@ -136,10 +136,15 @@ void up_initialize(void)
   devnull_register();   /* Standard /dev/null */
 #endif
 
-  /* Initialize the serial device driver */
+  /* Initialize the console device driver.  NOTE that the naming
+   * implies that the console is a serial driver.  That is usually the case,
+   * however, if no UARTs are enabled, the console could als be provided
+   * through some other device, such as an LCD.  Architecture-specific logic
+   * will have to detect that case.
+   */
 
 #ifdef CONFIG_USE_SERIALDRIVER
-  up_serialinit();
+  up_consoleinit();
 #elif defined(CONFIG_DEV_LOWCONSOLE)
   lowconsole_init();
 #endif

arch/sh/src/common/up_internal.h

@@ -55,7 +55,12 @@
 #undef  CONFIG_SUPPRESS_SCI_CONFIG    /* DEFINED: Do not reconfig SCI */
 #undef  CONFIG_DUMP_ON_EXIT           /* DEFINED: Dump task state on exit */
 
-/* Determine which (if any) console driver to use */
+/* Determine which (if any) console driver to use.  NOTE that the naming
+ * implies that the console is a serial driver.  That is usually the case,
+ * however, if no UARTs are enabled, the console could als be provided
+ * through some other device, such as an LCD.  Architecture-specific logic
+ * will have to detect that case.
+ */
 
 #if CONFIG_NFILE_DESCRIPTORS == 0 || defined(CONFIG_DEV_LOWCONSOLE)
 #  undef CONFIG_USE_SERIALDRIVER
@@ -142,11 +147,11 @@ extern void up_vectorfiq(void);
 /* Defined in up_serial.c */
 
 #if CONFIG_NFILE_DESCRIPTORS > 0
-extern void up_earlyserialinit(void);
+extern void up_earlyconsoleinit(void);
-extern void up_serialinit(void);
+extern void up_consoleinit(void);
 #else
-# define up_earlyserialinit()
+# define up_earlyconsoleinit()
-# define up_serialinit()
+# define up_consoleinit()
 #endif
 
 /* Defined in drivers/lowconsole.c */

arch/sh/src/m16c/m16c_head.S

@@ -245,8 +245,8 @@ __start:
 /* Perform early serial initialization */
 
 #ifdef CONFIG_USE_EARLYSERIALINIT
-	.globl	_up_earlyserialinit	/* Early initialization of serial driver */
+	.globl	_up_earlyconsoleinit	/* Early initialization of serial driver */
-	jsr.a	 _up_earlyserialinit	/* Call it */
+	jsr.a	 _up_earlyconsoleinit	/* Call it */
 	showprogress 'D'
 #endif
 

arch/sh/src/m16c/m16c_lowputc.c

@@ -49,6 +49,12 @@
 #include "up_internal.h"
 #include "m16c_uart.h"
 
+/* Is there any serial support?  This might be the case if the board does
+ * not have serial ports but supports stdout through, say, an LCD.
+ */
+
+#if !defined(CONFIG_UART0_DISABLE) && !defined(CONFIG_UART1_DISABLE) && !defined(CONFIG_UART2_DISABLE)
+
 /**************************************************************************
  * Private Definitions
  **************************************************************************/
@@ -59,7 +65,7 @@
 #  define M16C_XIN_PRESCALER 1
 #endif
 
-/* Is there a serial console? */
+/* We know that we have a serial port enabled.  Is one of them a serial console? */
 
 #if defined(CONFIG_UART0_SERIAL_CONSOLE) && !defined(CONFIG_UART0_DISABLE)
 #  define HAVE_CONSOLE 1
@@ -74,9 +80,6 @@
 #  undef CONFIG_UART0_SERIAL_CONSOLE
 #  undef CONFIG_UART1_SERIAL_CONSOLE
 #else
-#  if defined(CONFIG_UART0_SERIAL_CONSOLE) || defined(CONFIG_UART1_SERIAL_CONSOLE)|| defined(CONFIG_UART2_SERIAL_CONSOLE)
-#    error "Serial console selected, but corresponding UART not enabled"
-#  endif
 #  undef HAVE_CONSOLE
 #endif
 
@@ -291,3 +294,8 @@ void up_lowsetup(void)
   regval = (ubyte)getreg16(M16C_UART_BASE + M16C_UART_RB);
 #endif
 }
+
+#elif defined(CONFIG_UART0_SERIAL_CONSOLE) || defined(CONFIG_UART1_SERIAL_CONSOLE)|| defined(CONFIG_UART2_SERIAL_CONSOLE)
+#    error "A serial console selected, but corresponding UART not enabled"
+#endif /*  !CONFIG_UART0_DISABLE && !CONFIG_UART1_DISABLE && !CONFIG_UART2_DISABLE */
+

arch/sh/src/m16c/m16c_serial.c

@@ -55,6 +55,12 @@
 #include "os_internal.h"
 #include "m16c_uart.h"
 
+/* Is there any serial support?  This might be the case if the board does
+ * not have serial ports but supports a console through, say, an LCD.
+ */
+
+#if !defined(CONFIG_UART0_DISABLE) && !defined(CONFIG_UART1_DISABLE) && !defined(CONFIG_UART2_DISABLE)
+
 /****************************************************************************
  * Definitions
  ****************************************************************************/
@@ -1056,16 +1062,16 @@ static boolean up_txready(struct uart_dev_s *dev)
  ****************************************************************************/
 
 /****************************************************************************
- * Name: up_serialinit
+ * Name: up_earlyconsoleinit
  *
  * Description:
  *   Performs the low level UART initialization early in 
  *   debug so that the serial console will be available
- *   during bootup.  This must be called before up_serialinit.
+ *   during bootup.  This must be called before up_consoleinit.
  *
  ****************************************************************************/
 
-void up_earlyserialinit(void)
+void up_earlyconsoleinit(void)
 {
   /* NOTE:  All GPIO configuration for the UARTs was performed in
    * up_lowsetup
@@ -1092,15 +1098,15 @@ void up_earlyserialinit(void)
 }
 
 /****************************************************************************
- * Name: up_serialinit
+ * Name: up_consoleinit
  *
  * Description:
  *   Register serial console and serial ports.  This assumes
- *   that up_earlyserialinit was called previously.
+ *   that up_earlyconsoleinit was called previously.
  *
  ****************************************************************************/
 
-void up_serialinit(void)
+void up_consoleinit(void)
 {
   /* Register the console */
 
@@ -1184,3 +1190,7 @@ int up_putc(int ch)
 }
 
 #endif /* CONFIG_USE_SERIALDRIVER */
+#elif defined(CONFIG_UART0_SERIAL_CONSOLE) || defined(CONFIG_UART1_SERIAL_CONSOLE)|| defined(CONFIG_UART2_SERIAL_CONSOLE)
+#    error "A serial console selected, but corresponding UART not enabled"
+#endif /*  !CONFIG_UART0_DISABLE && !CONFIG_UART1_DISABLE && !CONFIG_UART2_DISABLE */
+

arch/sh/src/sh1/sh1_head.S

@@ -62,7 +62,7 @@
 
 	.globl	_up_lowsetup		/* Early initialization of UART */
 #ifdef CONFIG_USE_EARLYSERIALINIT
-	.globl	_up_earlyserialinit	/* Early initialization of serial driver */
+	.globl	_up_earlyconsoleinit	/* Early initialization of console driver */
 #endif
 #ifdef CONFIG_ARCH_LEDS
 	.globl	_up_ledinit		/* Boot LED setup */
@@ -161,7 +161,7 @@
 
 	.macro	showprogress, code
 #ifdef CONFIG_DEBUG
-	mov.l   .Llowputc, r0		/* Address of up_earlyserialinit */
+	mov.l   .Llowputc, r0		/* Address of up_earlyconsoleinit */
 	jsr     @r0			/* Call it */
 	mov	#\code, r4		/* Delay slot */
 #endif
@@ -427,7 +427,7 @@ __start0:
 	/* Perform early serial initialization */
 
 #ifdef CONFIG_USE_EARLYSERIALINIT
-	mov.l   .Learlyser, r0		/* Address of up_earlyserialinit */
+	mov.l   .Learlyser, r0		/* Address of up_earlyconsoleinit */
 	jsr     @r0			/* Call it */
 	or      r0, r0			/* Delay slot */
 #endif
@@ -483,7 +483,7 @@ __start0:
 	.long   _ebss
 #ifdef CONFIG_USE_EARLYSERIALINIT
 .Learlyser:
-	.long	_up_earlyserialinit
+	.long	_up_earlyconsoleinit
 #endif
 .Llowsetup:
 	.long	_up_lowsetup

arch/sh/src/sh1/sh1_serial.c

@@ -829,16 +829,16 @@ static boolean up_txready(struct uart_dev_s *dev)
  ****************************************************************************/
 
 /****************************************************************************
- * Name: up_serialinit
+ * Name: up_earlyconsoleinit
  *
  * Description:
  *   Performs the low level SCI initialization early in 
  *   debug so that the serial console will be available
- *   during bootup.  This must be called before up_serialinit.
+ *   during bootup.  This must be called before up_consoleinit.
  *
  ****************************************************************************/
 
-void up_earlyserialinit(void)
+void up_earlyconsoleinit(void)
 {
   /* NOTE:  All GPIO configuration for the SCIs was performed in
    * up_lowsetup
@@ -862,15 +862,15 @@ void up_earlyserialinit(void)
 }
 
 /****************************************************************************
- * Name: up_serialinit
+ * Name: up_consoleinit
  *
  * Description:
  *   Register serial console and serial ports.  This assumes
- *   that up_earlyserialinit was called previously.
+ *   that up_earlyconsoleinit was called previously.
  *
  ****************************************************************************/
 
-void up_serialinit(void)
+void up_consoleinit(void)
 {
   /* Register the console */