Rename up_timerinit() to up_timer_initailize(); Add prototypes for candidate interfaces for the tickless OS; Don't build existing timer initialization logic if CONFIG_SCHED_TICKLESS is defined.

arch/8051/src/Makefile.sdccl

@@ -1,7 +1,7 @@
 ############################################################################
 # arch/8051/src/Makefile.sdccl
 #
-#   Copyright (C) 2007, 2008, 2011-2012 Gregory Nutt. All rights reserved.
+#   Copyright (C) 2007, 2008, 2011-2012, 2014 Gregory Nutt. All rights reserved.
 #   Author: Gregory Nutt <gnutt@nuttx.org>
 #
 # Redistribution and use in source and binary forms, with or without
@@ -63,8 +63,13 @@ AOBJS = $(ASRCS:$(ASMEXT)=$(OBJEXT))
 CSRCS = up_initialize.c up_idle.c up_interruptcontext.c up_initialstate.c \
         up_unblocktask.c up_blocktask.c up_releasepending.c \
         up_reprioritizertr.c up_exit.c up_assert.c up_allocateheap.c \
-        up_irq.c up_savecontext.c up_restorecontext.c up_timerisr.c up_putc.c \
+        up_irq.c up_savecontext.c up_restorecontext.c up_putc.c \
         up_debug.c up_delay.c
+
+ifneq ($(CONFIG_SCHED_TICKLESS),y)
+CSRCS += up_timerisr.c
+endif
+
 COBJS = $(CSRCS:.c=$(OBJEXT))
 
 # All sources and objcts

arch/8051/src/up_initialize.c

@@ -136,7 +136,7 @@ void up_initialize(void)
   /* Initialize the system timer interrupt */
 
 #ifndef CONFIG_ARCH_8051_SUPRESS_INTERRUPTS
-  up_timerinit();
+  up_timer_initialize();
 #endif
 
   board_led_on(LED_IRQSENABLED);

arch/8051/src/up_internal.h

@@ -117,7 +117,7 @@ void up_restoreregisters(FAR uint8_t *regs) _naked;
 uint8_t up_savecontext(FAR struct xcptcontext *context) __naked;
 void up_saveregisters(FAR uint8_t *regs) _naked;
 void up_saveirqcontext(FAR struct xcptcontext *context);
-void up_timerinit(void);
+void up_timer_initialize(void);
 
 /* Defined in up_debug.c */
 

arch/8051/src/up_timerisr.c

@@ -82,7 +82,7 @@ int up_timerisr(int irq, FAR uint8_t *frame)
 }
 
 /************************************************************************
- * Function:  up_timerinit
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize
@@ -90,7 +90,7 @@ int up_timerisr(int irq, FAR uint8_t *frame)
  *
  ************************************************************************/
 
-void up_timerinit(void)
+void up_timer_initialize(void)
 {
 #ifdef CONFIG_ARCH_8051_NOSYSTIMER
   up_disable_irq(TIMER2_IRQ);

arch/arm/src/a1x/Make.defs

@@ -1,7 +1,7 @@
 ############################################################################
 # arch/arm/a1x/Make.defs
 #
-#   Copyright (C) 2013 Gregory Nutt. All rights reserved.
+#   Copyright (C) 2013-2014 Gregory Nutt. All rights reserved.
 #   Author: Gregory Nutt <gnutt@nuttx.org>
 #
 # Redistribution and use in source and binary forms, with or without
@@ -101,4 +101,8 @@ CHIP_ASRCS  =
 
 # A1x-specific C source files
 
-CHIP_CSRCS  = a1x_boot.c a1x_irq.c a1x_pio.c a1x_timerisr.c a1x_lowputc.c a1x_serial.c
+CHIP_CSRCS  = a1x_boot.c a1x_irq.c a1x_pio.c a1x_lowputc.c a1x_serial.c
+
+ifneq ($(CONFIG_SCHED_TICKLESS),y)
+CHIP_CSRCS += a1x_timerisr.c
+endif

arch/arm/src/a1x/a1x_timerisr.c

@@ -107,7 +107,7 @@ int up_timerisr(int irq, uint32_t *regs)
 }
 
 /****************************************************************************
- * Function:  up_timerinit
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize
@@ -115,7 +115,7 @@ int up_timerisr(int irq, uint32_t *regs)
  *
  ****************************************************************************/
 
-void up_timerinit(void)
+void up_timer_initialize(void)
 {
   uint32_t regval;
 

arch/arm/src/c5471/Make.defs

@@ -33,10 +33,10 @@
 #
 ############################################################################
 
-HEAD_ASRC	= up_nommuhead.S
+HEAD_ASRC = up_nommuhead.S
 
-CMN_ASRCS	= up_saveusercontext.S up_fullcontextrestore.S vfork.S
+CMN_ASRCS = up_saveusercontext.S up_fullcontextrestore.S vfork.S
-CMN_CSRCS	= up_allocateheap.c up_assert.c up_blocktask.c up_copyfullstate.c \
+CMN_CSRCS = up_allocateheap.c up_assert.c up_blocktask.c up_copyfullstate.c \
 		  up_createstack.c up_dataabort.c up_mdelay.c up_udelay.c up_doirq.c \
 		  up_exit.c up_idle.c up_initialize.c up_initialstate.c \
 		  up_interruptcontext.c up_prefetchabort.c up_releasepending.c \
@@ -52,6 +52,9 @@ ifeq ($(CONFIG_DEBUG_STACK),y)
 CMN_CSRCS += up_checkstack.c
 endif
 
-CHIP_ASRCS	= c5471_lowputc.S c5471_vectors.S
+CHIP_ASRCS = c5471_lowputc.S c5471_vectors.S
-CHIP_CSRCS	= c5471_irq.c c5471_serial.c c5471_timerisr.c c5471_watchdog.c \
+CHIP_CSRCS = c5471_irq.c c5471_serial.c c5471_watchdog.c c5471_ethernet.c
-		  c5471_ethernet.c
+
+ifneq ($(CONFIG_SCHED_TICKLESS),y)
+CHIP_CSRCS += c5471_timerisr.c
+endif

arch/arm/src/c5471/c5471_timerisr.c

@@ -99,7 +99,7 @@ int up_timerisr(int irq, uint32_t *regs)
 }
 
 /************************************************************
- * Function:  up_timerinit
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize
@@ -107,7 +107,7 @@ int up_timerisr(int irq, uint32_t *regs)
  *
  ************************************************************/
 
-void up_timerinit(void)
+void up_timer_initialize(void)
 {
   uint32_t val;
 

arch/arm/src/calypso/Make.defs

@@ -38,15 +38,15 @@
 
 HEAD_ASRC = calypso_head.S
 
-CMN_ASRCS = up_saveusercontext.S up_fullcontextrestore.S up_vectors.S \
+CMN_ASRCS  = up_saveusercontext.S up_fullcontextrestore.S up_vectors.S
-            up_nommuhead.S vfork.S
+CMN_ASRCS += up_nommuhead.S vfork.S
-CMN_CSRCS = up_allocateheap.c up_assert.c up_blocktask.c up_copyfullstate.c \
+CMN_CSRCS  = up_allocateheap.c up_assert.c up_blocktask.c up_copyfullstate.c
-            up_createstack.c up_dataabort.c up_mdelay.c up_udelay.c up_doirq.c \
+CMN_CSRCS += up_createstack.c up_dataabort.c up_mdelay.c up_udelay.c
-            up_exit.c up_idle.c up_initialstate.c up_initialize.c \
+CMN_CSRCS += up_doirq.c up_exit.c up_idle.c up_initialstate.c up_initialize.c
-            up_interruptcontext.c up_prefetchabort.c up_releasepending.c \
+CMN_CSRCS += up_interruptcontext.c up_prefetchabort.c up_releasepending.c
-            up_releasestack.c up_reprioritizertr.c up_schedulesigaction.c \
+CMN_CSRCS += up_releasestack.c up_reprioritizertr.c up_schedulesigaction.c
-            up_sigdeliver.c up_syscall.c up_unblocktask.c \
+CMN_CSRCS += up_sigdeliver.c up_syscall.c up_unblocktask.c
-            up_undefinedinsn.c up_usestack.c calypso_power.c up_vfork.c
+CMN_CSRCS += up_undefinedinsn.c up_usestack.c calypso_power.c up_vfork.c
 
 ifeq ($(CONFIG_ELF),y)
 CMN_CSRCS += up_elf.c
@@ -56,6 +56,10 @@ ifeq ($(CONFIG_DEBUG_STACK),y)
 CMN_CSRCS += up_checkstack.c
 endif
 
-CHIP_ASRCS = calypso_lowputc.S
+CHIP_ASRCS  = calypso_lowputc.S
-CHIP_CSRCS = calypso_irq.c calypso_timer.c calypso_heap.c calypso_serial.c \
+CHIP_CSRCS  = calypso_irq.c calypso_heap.c calypso_serial.c calypso_spi.c
-             calypso_spi.c clock.c calypso_uwire.c calypso_armio.c calypso_keypad.c
+CHIP_CSRCS += clock.c calypso_uwire.c calypso_armio.c calypso_keypad.c
+
+ifneq ($(CONFIG_SCHED_TICKLESS),y)
+CHIP_CSRCS += calypso_timer.c
+endif

arch/arm/src/calypso/calypso_timer.c

@@ -180,7 +180,7 @@ int up_timerisr(int irq, uint32_t *regs)
 }
 
 /************************************************************
- * Function:  up_timerinit
+ * Function:  up_timer_initialize
  *
  * Description:
  *   Setup Calypso HW timer 2 to cause system ticks.
@@ -190,7 +190,7 @@ int up_timerisr(int irq, uint32_t *regs)
  *
  ************************************************************/
 
-void up_timerinit(void)
+void up_timer_initialize(void)
 {
   up_disable_irq(IRQ_SYSTIMER);
 

arch/arm/src/common/up_initialize.c

@@ -183,7 +183,7 @@ void up_initialize(void)
 
 #if !defined(CONFIG_SUPPRESS_INTERRUPTS) && !defined(CONFIG_SUPPRESS_TIMER_INTS) && \
     !defined(CONFIG_SYSTEMTICK_EXTCLK)
-  up_timerinit();
+  up_timer_initialize();
 #endif
 
   /* Register devices */

arch/arm/src/common/up_internal.h

@@ -418,7 +418,7 @@ void up_restorefpu(const uint32_t *regs);
 
 /* System timer *************************************************************/
 
-void up_timerinit(void);
+void up_timer_initialize(void);
 int  up_timerisr(int irq, uint32_t *regs);
 
 /* Low level serial output **************************************************/

arch/arm/src/dm320/Make.defs

@@ -33,11 +33,11 @@
 #
 ############################################################################
 
-HEAD_ASRC	= up_head.S
+HEAD_ASRC = up_head.S
 
-CMN_ASRCS	= up_cache.S up_fullcontextrestore.S up_saveusercontext.S \
+CMN_ASRCS = up_cache.S up_fullcontextrestore.S up_saveusercontext.S \
 		  up_vectors.S up_vectoraddrexcptn.S up_vectortab.S vfork.S
-CMN_CSRCS	= up_assert.c up_blocktask.c up_copyfullstate.c up_createstack.c \
+CMN_CSRCS = up_assert.c up_blocktask.c up_copyfullstate.c up_createstack.c \
 		  up_dataabort.c up_mdelay.c up_udelay.c up_exit.c up_idle.c \
 		  up_initialize.c up_initialstate.c up_interruptcontext.c \
 		  up_prefetchabort.c up_releasepending.c up_releasestack.c \
@@ -53,10 +53,14 @@ ifeq ($(CONFIG_DEBUG_STACK),y)
 CMN_CSRCS += up_checkstack.c
 endif
 
-CHIP_ASRCS	= dm320_lowputc.S dm320_restart.S
+CHIP_ASRCS = dm320_lowputc.S dm320_restart.S
-CHIP_CSRCS	= dm320_allocateheap.c dm320_boot.c dm320_decodeirq.c \
+CHIP_CSRCS = dm320_allocateheap.c dm320_boot.c dm320_decodeirq.c \
-		  dm320_irq.c dm320_serial.c dm320_timerisr.c dm320_framebuffer.c
+		  dm320_irq.c dm320_serial.c dm320_framebuffer.c
+
+ifneq ($(CONFIG_SCHED_TICKLESS),y)
+CHIP_CSRCS += dm320_timerisr.c
+endif
 
 ifeq ($(CONFIG_USBDEV),y)
-CHIP_CSRCS	+= dm320_usbdev.c
+CHIP_CSRCS += dm320_usbdev.c
 endif

arch/arm/src/dm320/dm320_timerisr.c

@@ -126,7 +126,7 @@ int up_timerisr(int irq, uint32_t *regs)
 }
 
 /****************************************************************************
- * Function:  up_timerinit
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize the timer
@@ -134,7 +134,7 @@ int up_timerisr(int irq, uint32_t *regs)
  *
  ****************************************************************************/
 
-void up_timerinit(void)
+void up_timer_initialize(void)
 {
   up_disable_irq(DM320_IRQ_SYSTIMER);
 

arch/arm/src/imx/Make.defs

@@ -33,11 +33,11 @@
 #
 ############################################################################
 
-HEAD_ASRC	= up_head.S
+HEAD_ASRC = up_head.S
 
-CMN_ASRCS	= up_cache.S up_fullcontextrestore.S up_saveusercontext.S \
+CMN_ASRCS = up_cache.S up_fullcontextrestore.S up_saveusercontext.S \
 		  up_vectors.S up_vectoraddrexcptn.S up_vectortab.S vfork.S
-CMN_CSRCS	= up_assert.c up_blocktask.c up_copyfullstate.c up_createstack.c \
+CMN_CSRCS = up_assert.c up_blocktask.c up_copyfullstate.c up_createstack.c \
 		  up_dataabort.c up_mdelay.c up_udelay.c up_exit.c up_idle.c \
 		  up_initialize.c up_initialstate.c up_interruptcontext.c \
 		  up_prefetchabort.c up_releasepending.c up_releasestack.c \
@@ -53,10 +53,14 @@ ifeq ($(CONFIG_DEBUG_STACK),y)
 CMN_CSRCS += up_checkstack.c
 endif
 
-CHIP_ASRCS	= imx_lowputc.S
+CHIP_ASRCS = imx_lowputc.S
-CHIP_CSRCS	= imx_boot.c imx_gpio.c imx_allocateheap.c imx_irq.c \
+CHIP_CSRCS = imx_boot.c imx_gpio.c imx_allocateheap.c imx_irq.c \
-		  imx_serial.c imx_timerisr.c  imx_decodeirq.c imx_spi.c
+		  imx_serial.c imx_decodeirq.c imx_spi.c
+
+ifneq ($(CONFIG_SCHED_TICKLESS),y)
+CHIP_CSRCS += imx_timerisr.c
+endif
 
 ifeq ($(CONFIG_USBDEV),y)
-CHIP_CSRCS	+= imx_usbdev.c
+CHIP_CSRCS += imx_usbdev.c
 endif

arch/arm/src/imx/imx_timerisr.c

@@ -100,7 +100,7 @@ int up_timerisr(int irq, uint32_t *regs)
 }
 
 /****************************************************************************
- * Function:  up_timerinit
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize the timer
@@ -108,7 +108,7 @@ int up_timerisr(int irq, uint32_t *regs)
  *
  ****************************************************************************/
 
-void up_timerinit(void)
+void up_timer_initialize(void)
 {
   uint32_t tctl;
 

arch/arm/src/kinetis/Make.defs

@@ -1,7 +1,7 @@
 ############################################################################
 # arch/arm/src/kinetis/Make.defs
 #
-#   Copyright (C) 2011, 2013 Gregory Nutt. All rights reserved.
+#   Copyright (C) 2011, 2013-2014 Gregory Nutt. All rights reserved.
 #   Author: Gregory Nutt <gnutt@nuttx.org>
 #
 # Redistribution and use in source and binary forms, with or without
@@ -83,11 +83,14 @@ CHIP_ASRCS  =
 CHIP_CSRCS  = kinetis_allocateheap.c kinetis_clockconfig.c
 CHIP_CSRCS += kinetis_clrpend.c kinetis_idle.c kinetis_irq.c
 CHIP_CSRCS += kinetis_lowputc.c kinetis_pin.c kinetis_pingpio.c
-CHIP_CSRCS += kinetis_serial.c kinetis_start.c kinetis_timerisr.c
+CHIP_CSRCS += kinetis_serial.c kinetis_start.c kinetis_wdog.c
-CHIP_CSRCS += kinetis_wdog.c
 
 # Configuration-dependent Kinetis files
 
+ifneq ($(CONFIG_SCHED_TICKLESS),y)
+CHIP_CSRCS += kinetis_timerisr.c
+endif
+
 ifeq ($(CONFIG_NUTTX_KERNEL),y)
 CHIP_CSRCS += kinetis_userspace.c kinetis_mpuinit.c
 endif

arch/arm/src/kinetis/kinetis_timerisr.c

@@ -107,7 +107,7 @@ int up_timerisr(int irq, uint32_t *regs)
 }
 
 /****************************************************************************
- * Function:  up_timerinit
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize
@@ -115,7 +115,7 @@ int up_timerisr(int irq, uint32_t *regs)
  *
  ****************************************************************************/
 
-void up_timerinit(void)
+void up_timer_initialize(void)
 {
   uint32_t regval;
 

arch/arm/src/kl/Make.defs

@@ -1,7 +1,7 @@
 ############################################################################
 # arch/arm/src/kl/Make.defs
 #
-#   Copyright (C) 2013 Gregory Nutt. All rights reserved.
+#   Copyright (C) 2013-2014 Gregory Nutt. All rights reserved.
 #   Author: Gregory Nutt <gnutt@nuttx.org>
 #
 # Redistribution and use in source and binary forms, with or without
@@ -69,7 +69,11 @@ endif
 
 CHIP_ASRCS  =
 CHIP_CSRCS  = kl_clockconfig.c kl_gpio.c kl_idle.c kl_irq.c kl_lowgetc.c
-CHIP_CSRCS += kl_lowputc.c kl_serial.c kl_start.c kl_timerisr.c kl_cfmconfig.c
+CHIP_CSRCS += kl_lowputc.c kl_serial.c kl_start.c kl_cfmconfig.c
+
+ifneq ($(CONFIG_SCHED_TICKLESS),y)
+CHIP_CSRCS += kl_timerisr.c
+endif
 
 ifeq ($(CONFIG_NUTTX_KERNEL),y)
 CHIP_CSRCS += kl_userspace.c

arch/arm/src/kl/kl_timerisr.c

@@ -122,7 +122,7 @@ int up_timerisr(int irq, uint32_t *regs)
 }
 
 /****************************************************************************
- * Function:  up_timerinit
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize
@@ -130,7 +130,7 @@ int up_timerisr(int irq, uint32_t *regs)
  *
  ****************************************************************************/
 
-void up_timerinit(void)
+void up_timer_initialize(void)
 {
   uint32_t regval;
 

arch/arm/src/lpc17xx/Make.defs

@@ -101,10 +101,14 @@ CHIP_ASRCS  =
 
 CHIP_CSRCS  = lpc17_allocateheap.c lpc17_clockconfig.c lpc17_clrpend.c
 CHIP_CSRCS += lpc17_gpio.c lpc17_i2c.c lpc17_idle.c lpc17_irq.c lpc17_lowputc.c
-CHIP_CSRCS += lpc17_serial.c lpc17_spi.c lpc17_ssp.c lpc17_start.c lpc17_timerisr.c
+CHIP_CSRCS += lpc17_serial.c lpc17_spi.c lpc17_ssp.c lpc17_start.c
 
 # Configuration-dependent LPC17xx files
 
+ifneq ($(CONFIG_SCHED_TICKLESS),y)
+CHIP_CSRCS += lpc17_timerisr.c
+endif
+
 ifeq ($(CONFIG_ARMV7M_CMNVECTOR),y)
 CHIP_ASRCS += lpc17_vectors.S
 endif

arch/arm/src/lpc17xx/lpc17_timerisr.c

@@ -108,7 +108,7 @@ int up_timerisr(int irq, uint32_t *regs)
 }
 
 /****************************************************************************
- * Function:  up_timerinit
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize
@@ -116,7 +116,7 @@ int up_timerisr(int irq, uint32_t *regs)
  *
  ****************************************************************************/
 
-void up_timerinit(void)
+void up_timer_initialize(void)
 {
   uint32_t regval;
 

arch/arm/src/lpc214x/Make.defs

@@ -57,10 +57,13 @@ CMN_CSRCS += up_checkstack.c
 endif
 
 CHIP_ASRCS	= lpc214x_lowputc.S
-CHIP_CSRCS	= lpc214x_decodeirq.c lpc214x_irq.c lpc214x_timerisr.c \
+CHIP_CSRCS	= lpc214x_decodeirq.c lpc214x_irq.c lpc214x_serial.c
-		  lpc214x_serial.c
 
-ifeq ($(CONFIG_USBDEV),y)
+ifneq ($(CONFIG_SCHED_TICKLESS),y)
-CHIP_CSRCS	+= lpc214x_usbdev.c
+CHIP_CSRCS += lpc214x_timerisr.c
+endif
+
+ifeq ($(CONFIG_USBDEV),y)
+CHIP_CSRCS += lpc214x_usbdev.c
 endif
 

arch/arm/src/lpc214x/lpc214x_timerisr.c

@@ -115,7 +115,7 @@ int up_timerisr(int irq, uint32_t *regs)
 }
 
 /****************************************************************************
- * Function:  up_timerinit
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize
@@ -123,7 +123,7 @@ int up_timerisr(int irq, uint32_t *regs)
  *
  ****************************************************************************/
 
-void up_timerinit(void)
+void up_timer_initialize(void)
 {
   uint16_t mcr;
 

arch/arm/src/lpc2378/Make.defs

@@ -62,9 +62,13 @@ CMN_CSRCS += up_checkstack.c
 endif
 
 CHIP_ASRCS = lpc23xx_lowputc.S
-CHIP_CSRCS = lpc23xx_pllsetup.c  lpc23xx_decodeirq.c lpc23xx_irq.c lpc23xx_timerisr.c \
+CHIP_CSRCS = lpc23xx_pllsetup.c  lpc23xx_decodeirq.c lpc23xx_irq.c \
    lpc23xx_serial.c lpc23xx_io.c
 
+ifneq ($(CONFIG_SCHED_TICKLESS),y)
+CHIP_CSRCS += lpc23xx_timerisr.c
+endif
+
 ifeq ($(CONFIG_LPC2378_SPI),y)
 CHIP_CSRCS += lpc23xx_spi.c
 endif

arch/arm/src/lpc2378/lpc23xx_timerisr.c

@@ -138,7 +138,7 @@ int up_timerisr(int irq, uint32_t * regs)
 }
 
 /****************************************************************************
- * Function:  up_timerinit
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize
@@ -146,7 +146,7 @@ int up_timerisr(int irq, uint32_t * regs)
  *
  ****************************************************************************/
 
-void up_timerinit(void)
+void up_timer_initialize(void)
 {
   uint16_t mcr;
 

arch/arm/src/lpc31xx/Make.defs

@@ -71,7 +71,11 @@ CHIP_ASRCS  = $(CGU_ASRCS)
 
 CHIP_CSRCS  = lpc31_allocateheap.c lpc31_boot.c lpc31_decodeirq.c
 CHIP_CSRCS += lpc31_irq.c lpc31_lowputc.c lpc31_serial.c lpc31_i2c.c
-CHIP_CSRCS += lpc31_spi.c lpc31_timerisr.c $(CGU_CSRCS)
+CHIP_CSRCS += lpc31_spi.c $(CGU_CSRCS)
+
+ifneq ($(CONFIG_SCHED_TICKLESS),y)
+CHIP_CSRCS += lpc31_timerisr.c
+endif
 
 ifeq ($(CONFIG_LPC31_USBOTG),y)
 ifeq ($(CONFIG_USBHOST),y)

arch/arm/src/lpc31xx/lpc31_timerisr.c

@@ -93,7 +93,7 @@ int up_timerisr(int irq, uint32_t *regs)
 }
 
 /****************************************************************************
- * Function:  up_timerinit
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize
@@ -101,7 +101,7 @@ int up_timerisr(int irq, uint32_t *regs)
  *
  ****************************************************************************/
 
-void up_timerinit(void)
+void up_timer_initialize(void)
 {
   uint32_t regval;
   uint64_t load;

arch/arm/src/lpc43xx/Make.defs

@@ -1,7 +1,7 @@
 ############################################################################
 # arch/arm/src/lpc43xx/Make.defs
 #
-#   Copyright (C) 2012-2013 Gregory Nutt. All rights reserved.
+#   Copyright (C) 2012-2014 Gregory Nutt. All rights reserved.
 #   Author: Gregory Nutt <gnutt@nuttx.org>
 #
 # Redistribution and use in source and binary forms, with or without
@@ -85,7 +85,11 @@ endif
 CHIP_ASRCS  =
 CHIP_CSRCS  = lpc43_allocateheap.c lpc43_cgu.c lpc43_clrpend.c lpc43_gpio.c
 CHIP_CSRCS += lpc43_irq.c lpc43_pinconfig.c lpc43_rgu.c lpc43_serial.c
-CHIP_CSRCS += lpc43_start.c lpc43_timerisr.c lpc43_uart.c
+CHIP_CSRCS += lpc43_start.c lpc43_uart.c
+
+ifneq ($(CONFIG_SCHED_TICKLESS),y)
+CHIP_CSRCS += lpc43_timerisr.c
+endif
 
 ifeq ($(CONFIG_NUTTX_KERNEL),y)
 CHIP_CSRCS += lpc43_userspace.c lpc43_mpuinit.c

arch/arm/src/lpc43xx/lpc43_timerisr.c

@@ -107,7 +107,7 @@ int up_timerisr(int irq, uint32_t *regs)
 }
 
 /****************************************************************************
- * Function:  up_timerinit
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize
@@ -115,7 +115,7 @@ int up_timerisr(int irq, uint32_t *regs)
  *
  ****************************************************************************/
 
-void up_timerinit(void)
+void up_timer_initialize(void)
 {
   uint32_t regval;
 

arch/arm/src/nuc1xx/Make.defs

@@ -1,7 +1,7 @@
 ############################################################################
 # arch/arm/src/nuc1xx/Make.defs
 #
-#   Copyright (C) 2013 Gregory Nutt. All rights reserved.
+#   Copyright (C) 2013-2014 Gregory Nutt. All rights reserved.
 #   Author: Gregory Nutt <gnutt@nuttx.org>
 #
 # Redistribution and use in source and binary forms, with or without
@@ -69,7 +69,11 @@ endif
 
 CHIP_ASRCS  =
 CHIP_CSRCS  = nuc_clockconfig.c nuc_gpio.c nuc_idle.c nuc_irq.c nuc_lowputc.c
-CHIP_CSRCS += nuc_serial.c nuc_start.c nuc_timerisr.c
+CHIP_CSRCS += nuc_serial.c nuc_start.c
+
+ifneq ($(CONFIG_SCHED_TICKLESS),y)
+CHIP_CSRCS += nuc_timerisr.c
+endif
 
 ifeq ($(CONFIG_NUTTX_KERNEL),y)
 CHIP_CSRCS += nuc_userspace.c

arch/arm/src/nuc1xx/nuc_timerisr.c

@@ -173,7 +173,7 @@ int up_timerisr(int irq, uint32_t *regs)
 }
 
 /****************************************************************************
- * Function:  up_timerinit
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize
@@ -181,7 +181,7 @@ int up_timerisr(int irq, uint32_t *regs)
  *
  ****************************************************************************/
 
-void up_timerinit(void)
+void up_timer_initialize(void)
 {
   uint32_t regval;
 

arch/arm/src/sam34/Make.defs

@@ -82,10 +82,14 @@ endif
 
 CHIP_ASRCS  =
 CHIP_CSRCS  = sam_allocateheap.c sam_gpioirq.c sam_irq.c sam_lowputc.c
-CHIP_CSRCS += sam_serial.c sam_start.c sam_timerisr.c
+CHIP_CSRCS += sam_serial.c sam_start.c
 
 # Configuration-dependent SAM3/4 files
 
+ifneq ($(CONFIG_SCHED_TICKLESS),y)
+CHIP_CSRCS += sam_timerisr.c
+endif
+
 ifeq ($(CONFIG_CRYPTO_AES),y)
 CHIP_CSRCS += sam_aes.c
 endif

arch/arm/src/sam34/sam_timerisr.c

@@ -129,7 +129,7 @@ int up_timerisr(int irq, uint32_t *regs)
 }
 
 /****************************************************************************
- * Function:  up_timerinit
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize the timer
@@ -137,7 +137,7 @@ int up_timerisr(int irq, uint32_t *regs)
  *
  ****************************************************************************/
 
-void up_timerinit(void)
+void up_timer_initialize(void)
 {
   uint32_t regval;
 

arch/arm/src/sama5/Make.defs

@@ -105,10 +105,14 @@ CHIP_ASRCS  =
 
 CHIP_CSRCS  = sam_allocateheap.c sam_boot.c sam_clockconfig.c sam_irq.c
 CHIP_CSRCS += sam_lowputc.c sam_memories.c sam_pck.c sam_pio.c sam_pmc.c
-CHIP_CSRCS += sam_sckc.c sam_serial.c sam_timerisr.c
+CHIP_CSRCS += sam_sckc.c sam_serial.c
 
 # Configuration dependent C and assembly language files
 
+ifneq ($(CONFIG_SCHED_TICKLESS),y)
+CHIP_CSRCS += sam_timerisr.c
+endif
+
 ifeq ($(CONFIG_SAMA5_DMAC0),y)
 CHIP_CSRCS += sam_dmac.c
 else

arch/arm/src/sama5/sam_timerisr.c

@@ -118,7 +118,7 @@ int up_timerisr(int irq, uint32_t *regs)
 }
 
 /****************************************************************************
- * Function:  up_timerinit
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize
@@ -126,7 +126,7 @@ int up_timerisr(int irq, uint32_t *regs)
  *
  ****************************************************************************/
 
-void up_timerinit(void)
+void up_timer_initialize(void)
 {
   uint32_t regval;
 

arch/arm/src/samd/Make.defs

@@ -70,7 +70,11 @@ endif
 CHIP_ASRCS  =
 CHIP_CSRCS  = sam_clockconfig.c sam_idle.c sam_irq.c sam_lowputc.c
 CHIP_CSRCS += sam_port.c sam_sercom.c sam_serial.c sam_start.c
-CHIP_CSRCS += sam_timerisr.c sam_usart.c
+CHIP_CSRCS += sam_usart.c
+
+ifneq ($(CONFIG_SCHED_TICKLESS),y)
+CHIP_CSRCS += sam_timerisr.c
+endif
 
 ifeq ($(CONFIG_NUTTX_KERNEL),y)
 CHIP_CSRCS += sam_userspace.c

arch/arm/src/samd/sam_timerisr.c

@@ -110,7 +110,7 @@ int up_timerisr(int irq, uint32_t *regs)
 }
 
 /****************************************************************************
- * Function:  up_timerinit
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize
@@ -118,7 +118,7 @@ int up_timerisr(int irq, uint32_t *regs)
  *
  ****************************************************************************/
 
-void up_timerinit(void)
+void up_timer_initialize(void)
 {
   uint32_t regval;
 

arch/arm/src/stm32/Make.defs

@@ -94,8 +94,12 @@ CHIP_ASRCS  =
 
 CHIP_CSRCS  = stm32_allocateheap.c stm32_start.c stm32_rcc.c stm32_lse.c
 CHIP_CSRCS += stm32_lsi.c stm32_gpio.c stm32_exti_gpio.c stm32_flash.c stm32_irq.c
-CHIP_CSRCS += stm32_timerisr.c stm32_dma.c stm32_lowputc.c stm32_serial.c
+CHIP_CSRCS += stm32_dma.c stm32_lowputc.c stm32_serial.c stm32_spi.c
-CHIP_CSRCS += stm32_spi.c stm32_sdio.c stm32_tim.c stm32_waste.c stm32_ccm.c
+CHIP_CSRCS += stm32_sdio.c stm32_tim.c stm32_waste.c stm32_ccm.c
+
+ifneq ($(CONFIG_SCHED_TICKLESS),y)
+CHIP_CSRCS += stm32_timerisr.c
+endif
 
 ifeq ($(CONFIG_ARMV7M_CMNVECTOR),y)
 CHIP_ASRCS += stm32_vectors.S

arch/arm/src/stm32/stm32_timerisr.c

@@ -115,7 +115,7 @@ int up_timerisr(int irq, uint32_t *regs)
 }
 
 /****************************************************************************
- * Function:  up_timerinit
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize
@@ -123,7 +123,7 @@ int up_timerisr(int irq, uint32_t *regs)
  *
  ****************************************************************************/
 
-void up_timerinit(void)
+void up_timer_initialize(void)
 {
   uint32_t regval;
 

arch/arm/src/str71x/Make.defs

@@ -33,11 +33,11 @@
 #
 ##############################################################################
 
-HEAD_ASRC	= str71x_head.S
+HEAD_ASRC = str71x_head.S
 
-CMN_ASRCS	= up_saveusercontext.S up_fullcontextrestore.S up_vectors.S \
+CMN_ASRCS = up_saveusercontext.S up_fullcontextrestore.S up_vectors.S \
 			  vfork.S
-CMN_CSRCS	= up_allocateheap.c up_assert.c up_blocktask.c up_copyfullstate.c \
+CMN_CSRCS = up_allocateheap.c up_assert.c up_blocktask.c up_copyfullstate.c \
 			  up_createstack.c up_dataabort.c up_mdelay.c up_udelay.c \
 			  up_exit.c up_idle.c up_initialize.c up_initialstate.c \
 			  up_interruptcontext.c up_prefetchabort.c up_releasepending.c \
@@ -45,7 +45,7 @@ CMN_CSRCS	= up_allocateheap.c up_assert.c up_blocktask.c up_copyfullstate.c \
 			  up_undefinedinsn.c up_usestack.c up_lowputs.c up_vfork.c
 
 ifneq ($(CONFIG_DISABLE_SIGNALS),y)
-CMN_CSRCS	+= up_schedulesigaction.c up_sigdeliver.c
+CMN_CSRCS += up_schedulesigaction.c up_sigdeliver.c
 endif
 
 ifeq ($(CONFIG_ELF),y)
@@ -56,13 +56,18 @@ ifeq ($(CONFIG_DEBUG_STACK),y)
 CMN_CSRCS += up_checkstack.c
 endif
 
-CHIP_ASRCS	=
+CHIP_ASRCS =
-CHIP_CSRCS	= str71x_prccu.c str71x_lowputc.c str71x_decodeirq.c str71x_irq.c \
+CHIP_CSRCS = str71x_prccu.c str71x_lowputc.c str71x_decodeirq.c str71x_irq.c \
-		  str71x_timerisr.c str71x_serial.c
+		   str71x_serial.c
+
+ifneq ($(CONFIG_SCHED_TICKLESS),y)
+CHIP_CSRCS += str71x_timerisr.c
+endif
 
 ifeq ($(CONFIG_USBDEV),y)
 CHIP_CSRCS	+= str71x_usbdev.c
 endif
+
 ifeq ($(CONFIG_STR71X_XTI),y)
 CHIP_CSRCS	+= str71x_xti.c
 endif

arch/arm/src/str71x/str71x_timerisr.c

@@ -156,7 +156,7 @@ int up_timerisr(int irq, uint32_t *regs)
 }
 
 /****************************************************************************
- * Function:  up_timerinit
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize
@@ -164,7 +164,7 @@ int up_timerisr(int irq, uint32_t *regs)
  *
  ****************************************************************************/
 
-void up_timerinit(void)
+void up_timer_initialize(void)
 {
   irqstate_t flags;
 

arch/arm/src/tiva/Make.defs

@@ -1,7 +1,7 @@
 ############################################################################
 # arch/arm/src/tiva/Make.defs
 #
-#   Copyright (C) 2009-2011, 2013 Gregory Nutt. All rights reserved.
+#   Copyright (C) 2009-2011, 2013-2014 Gregory Nutt. All rights reserved.
 #   Author: Gregory Nutt <gnutt@nuttx.org>
 #
 # Redistribution and use in source and binary forms, with or without
@@ -74,8 +74,12 @@ endif
 
 CHIP_ASRCS  =
 CHIP_CSRCS  = tiva_allocateheap.c tiva_start.c tiva_syscontrol.c tiva_irq.c
-CHIP_CSRCS += tiva_gpio.c tiva_gpioirq.c tiva_timerisr.c tiva_lowputc.c
+CHIP_CSRCS += tiva_gpio.c tiva_gpioirq.c tiva_lowputc.c tiva_serial.c
-CHIP_CSRCS += tiva_serial.c tiva_ssi.c tiva_dumpgpio.c
+CHIP_CSRCS += tiva_ssi.c tiva_dumpgpio.c
+
+ifneq ($(CONFIG_SCHED_TICKLESS),y)
+CHIP_CSRCS += tiva_timerisr.c
+endif
 
 ifeq ($(CONFIG_NUTTX_KERNEL),y)
 CHIP_CSRCS += tiva_userspace.c tiva_mpuinit.c

arch/arm/src/tiva/tiva_timerisr.c

@@ -105,7 +105,7 @@ int up_timerisr(int irq, uint32_t *regs)
 }
 
 /****************************************************************************
- * Function:  up_timerinit
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize
@@ -113,7 +113,7 @@ int up_timerisr(int irq, uint32_t *regs)
  *
  ****************************************************************************/
 
-void up_timerinit(void)
+void up_timer_initialize(void)
 {
   uint32_t regval;
 

arch/avr/src/at32uc3/Make.defs

@@ -1,7 +1,7 @@
 ############################################################################
 # arch/avr/src/at32uc3/Make.defs
 #
-#   Copyright (C) 2010 Gregory Nutt. All rights reserved.
+#   Copyright (C) 2010, 2014 Gregory Nutt. All rights reserved.
 #   Author: Gregory Nutt <gnutt@nuttx.org>
 #
 # Redistribution and use in source and binary forms, with or without
@@ -35,12 +35,12 @@
 
 # The start-up, "head", file
 
-HEAD_ASRC	= up_nommuhead.S
+HEAD_ASRC = up_nommuhead.S
 
 # Common AVR/AVR32 files
 
-CMN_ASRCS	= up_exceptions.S up_fullcontextrestore.S up_switchcontext.S
+CMN_ASRCS = up_exceptions.S up_fullcontextrestore.S up_switchcontext.S
-CMN_CSRCS	= up_assert.c up_allocateheap.c up_blocktask.c up_copystate.c \
+CMN_CSRCS = up_assert.c up_allocateheap.c up_blocktask.c up_copystate.c \
 		  up_createstack.c up_mdelay.c up_udelay.c up_exit.c up_idle.c \
 		  up_initialize.c up_initialstate.c up_interruptcontext.c \
 		  up_modifyreg8.c up_modifyreg16.c up_modifyreg32.c \
@@ -51,20 +51,21 @@ CMN_CSRCS	= up_assert.c up_allocateheap.c up_blocktask.c up_copystate.c \
 # Configuration-dependent common files
 
 ifeq ($(CONFIG_ARCH_STACKDUMP),y)
-CMN_CSRCS	+= up_dumpstate.c
+CMN_CSRCS += up_dumpstate.c
 endif
 
 # Required AT32UC3 files
 
-CHIP_ASRCS	=
+CHIP_ASRCS =
-CHIP_CSRCS	= at32uc3_clkinit.c at32uc3_gpio.c at32uc3_irq.c \
+CHIP_CSRCS = at32uc3_clkinit.c at32uc3_gpio.c at32uc3_irq.c \
-		  at32uc3_lowconsole.c at32uc3_lowinit.c at32uc3_serial.c \
+		  at32uc3_lowconsole.c at32uc3_lowinit.c at32uc3_serial.c
-		  at32uc3_timerisr.c
 
 # Configuration-dependent AT32UC3 files
 
-ifeq ($(CONFIG_AVR32_GPIOIRQ),y)
+ifneq ($(CONFIG_SCHED_TICKLESS),y)
-CHIP_CSRCS	+= at32uc3_gpioirq.c
+CHIP_CSRCS += at32uc3_timerisr.c
 endif
 
-
+ifeq ($(CONFIG_AVR32_GPIOIRQ),y)
+CHIP_CSRCS += at32uc3_gpioirq.c
+endif

arch/avr/src/at32uc3/at32uc3_timerisr.c

@@ -178,7 +178,7 @@ int up_timerisr(int irq, uint32_t *regs)
 }
 
 /****************************************************************************
- * Function:  up_timerinit
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize the timer
@@ -187,7 +187,7 @@ int up_timerisr(int irq, uint32_t *regs)
  *
  ****************************************************************************/
 
-void up_timerinit(void)
+void up_timer_initialize(void)
 {
   uint32_t regval;
 

arch/avr/src/at90usb/Make.defs

@@ -1,7 +1,7 @@
 ############################################################################
 # arch/avr/src/at90usb/Make.defs
 #
-#   Copyright (C) 2011 Gregory Nutt. All rights reserved.
+#   Copyright (C) 2011, 2014 Gregory Nutt. All rights reserved.
 #   Author: Gregory Nutt <gnutt@nuttx.org>
 #
 # Redistribution and use in source and binary forms, with or without
@@ -35,12 +35,12 @@
 
 # The start-up, "head", file
 
-HEAD_ASRC	= at90usb_head.S
+HEAD_ASRC = at90usb_head.S
 
 # Common AVR files
 
-CMN_ASRCS	= up_switchcontext.S
+CMN_ASRCS = up_switchcontext.S
-CMN_CSRCS	= up_allocateheap.c up_assert.c up_blocktask.c up_copystate.c \
+CMN_CSRCS = up_allocateheap.c up_assert.c up_blocktask.c up_copystate.c \
 			  up_createstack.c up_doirq.c up_exit.c  up_idle.c up_initialize.c \
 			  up_initialstate.c up_interruptcontext.c up_irq.c up_lowputs.c \
 			  up_mdelay.c up_modifyreg8.c up_modifyreg16.c up_modifyreg32.c \
@@ -51,29 +51,33 @@ CMN_CSRCS	= up_allocateheap.c up_assert.c up_blocktask.c up_copystate.c \
 # Configuration-dependent common files
 
 ifeq ($(CONFIG_ARCH_STACKDUMP),y)
-CMN_CSRCS	+= up_dumpstate.c
+CMN_CSRCS += up_dumpstate.c
 endif
 
 ifeq ($(CONFIG_AVR_SPI),y)
-CMN_CSRCS	+= up_spi.c
+CMN_CSRCS += up_spi.c
 endif
 
 ifeq ($(CONFIG_DEBUG_STACK),y)
-CMN_CSRCS	+= up_checkstack.c
+CMN_CSRCS += up_checkstack.c
 endif
 
 ifeq ($(CONFIG_ARCH_ROMGETC),y)
-CMN_CSRCS	+= up_romgetc.c
+CMN_CSRCS += up_romgetc.c
 endif
 
 # Required AT90USB files
 
-CHIP_ASRCS	= at90usb_exceptions.S
+CHIP_ASRCS = at90usb_exceptions.S
-CHIP_CSRCS	= at90usb_lowconsole.c at90usb_lowinit.c at90usb_serial.c at90usb_timerisr.c
+CHIP_CSRCS = at90usb_lowconsole.c at90usb_lowinit.c at90usb_serial.c
 
 # Configuration-dependent aT90USB files
 
-ifeq ($(CONFIG_AVR_USBDEV),y)
+ifneq ($(CONFIG_SCHED_TICKLESS),y)
-CHIP_CSRCS      += at90usb_usbdev.c
+CHIP_CSRCS += at90usb_timerisr.c
+endif
+
+ifeq ($(CONFIG_AVR_USBDEV),y)
+CHIP_CSRCS += at90usb_usbdev.c
 endif
 

arch/avr/src/at90usb/at90usb_timerisr.c

@@ -132,7 +132,7 @@ int up_timerisr(int irq, uint32_t *regs)
 }
 
 /****************************************************************************
- * Function:  up_timerinit
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize the timer
@@ -141,7 +141,7 @@ int up_timerisr(int irq, uint32_t *regs)
  *
  ****************************************************************************/
 
-void up_timerinit(void)
+void up_timer_initialize(void)
 {
   /* Setup timer 1 compare match A to generate a tick interrupt.
    *

arch/avr/src/atmega/Make.defs

@@ -1,7 +1,7 @@
 ############################################################################
 # arch/avr/src/atmega/Make.defs
 #
-#   Copyright (C) 2011 Gregory Nutt. All rights reserved.
+#   Copyright (C) 2011, 2014 Gregory Nutt. All rights reserved.
 #   Author: Gregory Nutt <gnutt@nuttx.org>
 #
 # Redistribution and use in source and binary forms, with or without
@@ -35,12 +35,12 @@
 
 # The start-up, "head", file
 
-HEAD_ASRC	= atmega_head.S
+HEAD_ASRC = atmega_head.S
 
 # Common AVR files
 
-CMN_ASRCS	= up_switchcontext.S
+CMN_ASRCS = up_switchcontext.S
-CMN_CSRCS	= up_allocateheap.c up_assert.c up_blocktask.c up_copystate.c \
+CMN_CSRCS = up_allocateheap.c up_assert.c up_blocktask.c up_copystate.c \
 			  up_createstack.c up_doirq.c up_exit.c  up_idle.c up_initialize.c \
 			  up_initialstate.c up_interruptcontext.c up_irq.c up_lowputs.c \
 			  up_mdelay.c up_modifyreg8.c up_modifyreg16.c up_modifyreg32.c \
@@ -51,30 +51,32 @@ CMN_CSRCS	= up_allocateheap.c up_assert.c up_blocktask.c up_copystate.c \
 # Configuration-dependent common files
 
 ifeq ($(CONFIG_ARCH_STACKDUMP),y)
-CMN_CSRCS	+= up_dumpstate.c
+CMN_CSRCS += up_dumpstate.c
 endif
 
 ifeq ($(CONFIG_AVR_SPI),y)
-CMN_CSRCS	+= up_spi.c
+CMN_CSRCS += up_spi.c
 endif
 
 ifeq ($(CONFIG_DEBUG_STACK),y)
-CMN_CSRCS	+= up_checkstack.c
+CMN_CSRCS += up_checkstack.c
 endif
 
 ifeq ($(CONFIG_ARCH_ROMGETC),y)
-CMN_CSRCS	+= up_romgetc.c
+CMN_CSRCS += up_romgetc.c
 endif
 
 # Required ATMEGA files
 
-CHIP_ASRCS	= atmega_exceptions.S
+CHIP_ASRCS = atmega_exceptions.S
-CHIP_CSRCS	= atmega_lowconsole.c atmega_lowinit.c atmega_serial.c atmega_timerisr.c
+CHIP_CSRCS = atmega_lowconsole.c atmega_lowinit.c atmega_serial.c
+
+ifneq ($(CONFIG_SCHED_TICKLESS),y)
+CHIP_CSRCS += atmega_timerisr.c
+endif
 
 # Configuration-dependent ATMEGA files
 
 ifeq ($(CONFIG_AVR_GPIOIRQ),y)
 CHIP_CSRCS	+=
 endif
-
-

arch/avr/src/atmega/atmega_timerisr.c

@@ -132,7 +132,7 @@ int up_timerisr(int irq, uint32_t *regs)
 }
 
 /****************************************************************************
- * Function:  up_timerinit
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize the timer
@@ -141,7 +141,7 @@ int up_timerisr(int irq, uint32_t *regs)
  *
  ****************************************************************************/
 
-void up_timerinit(void)
+void up_timer_initialize(void)
 {
   /* Setup timer 1 compare match A to generate a tick interrupt.
    *

arch/avr/src/common/up_initialize.c

@@ -217,7 +217,7 @@ void up_initialize(void)
   /* Initialize the system timer interrupt */
 
 #if !defined(CONFIG_SUPPRESS_INTERRUPTS) && !defined(CONFIG_SUPPRESS_TIMER_INTS)
-  up_timerinit();
+  up_timer_initialize();
 #endif
 
   /* Register devices */

arch/avr/src/common/up_internal.h

@@ -182,7 +182,7 @@ void lowconsole_init(void);
 
 /* Defined in chip/xxx_timerisr.c */
 
-extern void up_timerinit(void);
+extern void up_timer_initialize(void);
 
 /* Defined in configs/<board-name>/src/up_leds.c */
 

arch/hc/src/common/up_initialize.c

@@ -140,7 +140,7 @@ void up_initialize(void)
   /* Initialize the system timer interrupt */
 
 #if !defined(CONFIG_SUPPRESS_INTERRUPTS) && !defined(CONFIG_SUPPRESS_TIMER_INTS)
-  up_timerinit();
+  up_timer_initialize();
 #endif
 
   /* Register devices */

arch/hc/src/common/up_internal.h

@@ -181,7 +181,7 @@ extern void up_sigdeliver(void);
 
 /* System timer initialization */
 
-extern void up_timerinit(void);
+extern void up_timer_initialize(void);
 extern int  up_timerisr(int irq, uint32_t *regs);
 
 /* Debug output */

arch/hc/src/m9s12/Make.defs

@@ -1,7 +1,7 @@
 ############################################################################
 # arch/arm/src/m9s12/Make.defs
 #
-#   Copyright (C) 2009, 2011 Gregory Nutt. All rights reserved.
+#   Copyright (C) 2009, 2011, 2014 Gregory Nutt. All rights reserved.
 #   Author: Gregory Nutt <gnutt@nuttx.org>
 #
 # Redistribution and use in source and binary forms, with or without
@@ -33,18 +33,22 @@
 #
 ############################################################################
 
-HEAD_ASRC	= m9s12_vectors.S
+HEAD_ASRC = m9s12_vectors.S
 
-CMN_ASRCS	=
+CMN_ASRCS =
-CMN_CSRCS	= up_allocateheap.c up_blocktask.c up_copystate.c up_createstack.c \
+CMN_CSRCS = up_allocateheap.c up_blocktask.c up_copystate.c up_createstack.c \
 			  up_doirq.c up_exit.c up_idle.c up_initialize.c up_interruptcontext.c \
 			  up_mdelay.c up_modifyreg16.c up_modifyreg32.c up_modifyreg8.c \
 			  up_puts.c up_releasepending.c up_releasestack.c up_reprioritizertr.c \
 			  up_udelay.c up_unblocktask.c up_usestack.c
 
-CHIP_ASRCS	= m9s12_start.S m9s12_lowputc.S m9s12_saveusercontext.S
+CHIP_ASRCS = m9s12_start.S m9s12_lowputc.S m9s12_saveusercontext.S
-CHIP_CSRCS	= m9s12_assert.c m9s12_gpio.c m9s12_gpioirq.c m9s12_initialstate.c \
+CHIP_CSRCS = m9s12_assert.c m9s12_gpio.c m9s12_gpioirq.c m9s12_initialstate.c \
-			  m9s12_irq.c m9s12_serial.c m9s12_timerisr.c
+			  m9s12_irq.c m9s12_serial.c
+
+ifneq ($(CONFIG_SCHED_TICKLESS),y)
+CHIP_CSRCS += m9s12_timerisr.c
+endif
 
 ifeq ($(CONFIG_DEBUG_GPIO),y)
 CHIP_CSRCS	+= m9s12_dumpgpio.c

arch/hc/src/m9s12/m9s12_timerisr.c

@@ -152,7 +152,7 @@ int up_timerisr(int irq, uint32_t *regs)
 }
 
 /****************************************************************************
- * Function:  up_timerinit
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize the system timer
@@ -160,7 +160,7 @@ int up_timerisr(int irq, uint32_t *regs)
  *
  ****************************************************************************/
 
-void up_timerinit(void)
+void up_timer_initialize(void)
 {
   uint32_t tmp;
   uint8_t  regval;

arch/mips/src/common/up_initialize.c

@@ -142,7 +142,7 @@ void up_initialize(void)
   /* Initialize the system timer interrupt */
 
 #if !defined(CONFIG_SUPPRESS_INTERRUPTS) && !defined(CONFIG_SUPPRESS_TIMER_INTS)
-  up_timerinit();
+  up_timer_initialize();
 #endif
 
   /* Register devices */

arch/mips/src/common/up_internal.h

@@ -264,7 +264,7 @@ extern void up_serialinit(void);
 
 /* System timer */
 
-extern void up_timerinit(void);
+extern void up_timer_initialize(void);
 
 /* Network */
 

arch/mips/src/pic32mx/Make.defs

@@ -1,7 +1,7 @@
 ############################################################################
 # arch/mips/src/pic32mx/Make.defs
 #
-#   Copyright (C) 2011-2012 Gregory Nutt. All rights reserved.
+#   Copyright (C) 2011-2012, 2014 Gregory Nutt. All rights reserved.
 #   Author: Gregory Nutt <gnutt@nuttx.org>
 #
 # Redistribution and use in source and binary forms, with or without
@@ -64,11 +64,14 @@ endif
 
 CHIP_ASRCS =
 CHIP_CSRCS = pic32mx-irq.c pic32mx-decodeirq.c pic32mx-exception.c pic32mx-gpio.c \
-			 pic32mx-lowconsole.c pic32mx-lowinit.c pic32mx-serial.c pic32mx-spi.c \
+			 pic32mx-lowconsole.c pic32mx-lowinit.c pic32mx-serial.c pic32mx-spi.c
-			 pic32mx-timerisr.c
 
 # Configuration-dependent PIC32MX files
 
+ifneq ($(CONFIG_SCHED_TICKLESS),y)
+CHIP_CSRCS += pic32mx-timerisr.c
+endif
+
 ifeq ($(CONFIG_GPIO_IRQ),y)
 CHIP_CSRCS += pic32mx_gpioirq.c
 endif

arch/mips/src/pic32mx/pic32mx-timerisr.c

@@ -158,7 +158,7 @@ int up_timerisr(int irq, uint32_t *regs)
 }
 
 /****************************************************************************
- * Function:  up_timerinit
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize
@@ -166,7 +166,7 @@ int up_timerisr(int irq, uint32_t *regs)
  *
  ****************************************************************************/
 
-void up_timerinit(void)
+void up_timer_initialize(void)
 {
   /* Configure and enable TIMER1.  Used the computed TCKPS divider and timer
    * match valude.  The source will be either the internal PBCLOCK (TCS=0) or

arch/sh/src/common/up_initialize.c

@@ -127,7 +127,7 @@ void up_initialize(void)
   /* Initialize the system timer interrupt */
 
 #if !defined(CONFIG_SUPPRESS_INTERRUPTS) && !defined(CONFIG_SUPPRESS_TIMER_INTS)
-  up_timerinit();
+  up_timer_initialize();
 #endif
 
   /* Register devices */

arch/sh/src/common/up_internal.h

@@ -206,7 +206,7 @@ extern void up_wdtinit(void);
 
 /* Defined in up_timerisr.c */
 
-extern void up_timerinit(void);
+extern void up_timer_initialize(void);
 
 /* Defined in chip-specific logic if CONFIG_ARCH_NOINTC is not set */
 

arch/sh/src/m16c/Make.defs

@@ -1,7 +1,7 @@
 ##############################################################################
 # arch/sh/src/m16c/Make.defs
 #
-#   Copyright (C) 2009 Gregory Nutt. All rights reserved.
+#   Copyright (C) 2009, 2014 Gregory Nutt. All rights reserved.
 #   Author: Gregory Nutt <gnutt@nuttx.org>
 #
 # Redistribution and use in source and binary forms, with or without
@@ -33,21 +33,25 @@
 #
 ##############################################################################
 
-HEAD_ASRC	= m16c_head.S
+HEAD_ASRC = m16c_head.S
 
-CMN_ASRCS	=
+CMN_ASRCS =
-CMN_CSRCS	= up_allocateheap.c up_assert.c up_blocktask.c \
+CMN_CSRCS = up_allocateheap.c up_assert.c up_blocktask.c \
 		  up_createstack.c up_doirq.c up_exit.c up_idle.c up_initialize.c \
 		  up_interruptcontext.c up_lowputs.c up_mdelay.c up_puts.c \
 		  up_releasepending.c up_releasestack.c up_reprioritizertr.c \
 		  up_udelay.c up_unblocktask.c up_usestack.c
 
-CHIP_ASRCS	= m16c_vectors.S
+CHIP_ASRCS = m16c_vectors.S
-CHIP_CSRCS	= m16c_initialstate.c m16c_copystate.c m16c_lowputc.c m16c_irq.c \
+CHIP_CSRCS = m16c_initialstate.c m16c_copystate.c m16c_lowputc.c m16c_irq.c \
-		  m16c_timerisr.c m16c_serial.c m16c_dumpstate.c
+		  m16c_serial.c m16c_dumpstate.c
+
+ifneq ($(CONFIG_SCHED_TICKLESS),y)
+CHIP_CSRCS += m16c_timerisr.c
+endif
 
 ifneq ($(CONFIG_DISABLE_SIGNALS),y)
-CHIP_CSRCS	+= m16c_schedulesigaction.c m16c_sigdeliver.c
+CHIP_CSRCS += m16c_schedulesigaction.c m16c_sigdeliver.c
 endif
 
 

arch/sh/src/m16c/m16c_timerisr.c

@@ -136,7 +136,7 @@ int up_timerisr(int irq, uint32_t *regs)
 }
 
 /****************************************************************************
- * Function:  up_timerinit
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize
@@ -144,7 +144,7 @@ int up_timerisr(int irq, uint32_t *regs)
  *
  ****************************************************************************/
 
-void up_timerinit(void)
+void up_timer_initialize(void)
 {
   /* Make sure that no timers are running and that all timer interrupts are
    * disabled.

arch/sh/src/sh1/Make.defs

@@ -1,7 +1,7 @@
 ##############################################################################
 # arch/sh/src/sh1/Make.defs
 #
-#   Copyright (C) 2008, 2009 Gregory Nutt. All rights reserved.
+#   Copyright (C) 2008, 2009, 2014 Gregory Nutt. All rights reserved.
 #   Author: Gregory Nutt <gnutt@nuttx.org>
 #
 # Redistribution and use in source and binary forms, with or without
@@ -33,24 +33,28 @@
 #
 ##############################################################################
 
-HEAD_ASRC	= sh1_head.S
+HEAD_ASRC  = sh1_head.S
 
-CMN_ASRCS	=
+CMN_ASRCS  =
-CMN_CSRCS	= up_allocateheap.c up_assert.c up_blocktask.c \
+CMN_CSRCS  = up_allocateheap.c up_assert.c up_blocktask.c
-		  up_createstack.c up_doirq.c up_exit.c up_idle.c up_initialize.c \
+CMN_CSRCS += up_createstack.c up_doirq.c up_exit.c up_idle.c up_initialize.c
-		  up_initialstate.c up_interruptcontext.c up_lowputs.c \
+CMN_CSRCS += up_initialstate.c up_interruptcontext.c up_lowputs.c
-		  up_mdelay.c up_puts.c up_releasepending.c up_releasestack.c \
+CMN_CSRCS += up_mdelay.c up_puts.c up_releasepending.c up_releasestack.c
-		  up_reprioritizertr.c up_udelay.c up_unblocktask.c up_usestack.c
+CMN_CSRCS += up_reprioritizertr.c up_udelay.c up_unblocktask.c up_usestack.c
 
-CHIP_ASRCS	= sh1_vector.S sh1_saveusercontext.S
+CHIP_ASRCS  = sh1_vector.S sh1_saveusercontext.S
-CHIP_CSRCS	= sh1_lowputc.c sh1_irq.c sh1_timerisr.c sh1_serial.c \
+CHIP_CSRCS  = sh1_lowputc.c sh1_irq.c sh1_serial.c sh1_initialstate.c
-		  sh1_initialstate.c sh1_copystate.c sh1_dumpstate.c
+CHIP_CSRCS += sh1_copystate.c sh1_dumpstate.c
+
+ifneq ($(CONFIG_SCHED_TICKLESS),y)
+CHIP_CSRCS += sh1_timerisr.c
+endif
 
 ifneq ($(CONFIG_DISABLE_SIGNALS),y)
-CMN_CSRCS	+= sh1_schedulesigaction.c sh1_sigdeliver.c
+CMN_CSRCS += sh1_schedulesigaction.c sh1_sigdeliver.c
 endif
 
 ifeq ($(CONFIG_USBDEV),y)
-CHIP_CSRCS	+=
+CHIP_CSRCS +=
 endif
 

arch/sh/src/sh1/sh1_timerisr.c

@@ -151,7 +151,7 @@ int up_timerisr(int irq, uint32_t *regs)
 }
 
 /****************************************************************************
- * Function:  up_timerinit
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize
@@ -159,7 +159,7 @@ int up_timerisr(int irq, uint32_t *regs)
  *
  ****************************************************************************/
 
-void up_timerinit(void)
+void up_timer_initialize(void)
 {
   uint8_t reg8;
 

arch/x86/src/common/up_initialize.c

@@ -142,7 +142,7 @@ void up_initialize(void)
   /* Initialize the system timer interrupt */
 
 #if !defined(CONFIG_SUPPRESS_INTERRUPTS) && !defined(CONFIG_SUPPRESS_TIMER_INTS)
-  up_timerinit();
+  up_timer_initialize();
 #endif
 
   /* Register devices */

arch/x86/src/common/up_internal.h

@@ -232,7 +232,7 @@ extern void up_wdtinit(void);
 
 /* Defined in up_timerisr.c */
 
-extern void up_timerinit(void);
+extern void up_timer_initialize(void);
 
 /* Defined in up_irq.c */
 

arch/x86/src/qemu/Make.defs

@@ -52,10 +52,14 @@ CMN_CSRCS += up_schedulesigaction.c up_unblocktask.c up_usestack.c
 
 CHIP_ASRCS  = qemu_saveusercontext.S qemu_fullcontextrestore.S qemu_vectors.S
 CHIP_CSRCS  = qemu_handlers.c qemu_idle.c qemu_lowputc.c qemu_lowsetup.c
-CHIP_CSRCS += qemu_serial.c qemu_timerisr.c
+CHIP_CSRCS += qemu_serial.c
 
 # Configuration-dependent QEMU files
 
+ifneq ($(CONFIG_SCHED_TICKLESS),y)
+CHIP_CSRCS += qemu_timerisr.c
+endif
+
 ifeq ($(CONFIG_QEMU_KEYPAD),y)
 CHIP_CSRCS += qemu_keypad.c
 endif

arch/x86/src/qemu/qemu_timerisr.c

@@ -114,7 +114,7 @@ static int up_timerisr(int irq, uint32_t *regs)
  ****************************************************************************/
 
 /****************************************************************************
- * Function:  up_timerinit
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize
@@ -122,7 +122,7 @@ static int up_timerisr(int irq, uint32_t *regs)
  *
  ****************************************************************************/
 
-void up_timerinit(void)
+void up_timer_initialize(void)
 {
   /* uint32_t to avoid compile time overflow errors */
 

arch/z16/src/common/up_initialize.c

@@ -146,7 +146,7 @@ void up_initialize(void)
   /* Initialize the system timer interrupt */
 
 #if !defined(CONFIG_SUPPRESS_INTERRUPTS) && !defined(CONFIG_SUPPRESS_TIMER_INTS)
-  up_timerinit();
+  up_timer_initialize();
 #endif
 
   /* Register devices */

arch/z16/src/common/up_internal.h

@@ -176,7 +176,7 @@ extern void lowconsole_init(void);
 
 /* Defined in up_timerisr.c */
 
-extern void up_timerinit(void);
+extern void up_timer_initialize(void);
 
 /* Defined in up_irq.c */
 

arch/z16/src/z16f/Make.defs

@@ -44,7 +44,11 @@ CMN_CSRCS += up_unblocktask.c up_doirq.c up_releasepending.c up_usestack.c
 CMN_CSRCS += up_exit.c up_releasestack.c up_idle.c up_reprioritizertr.c
 
 CHIP_SSRCS = z16f_lowuart.S z16f_saveusercontext.S z16f_restoreusercontext.S
-CHIP_CSRCS = z16f_clkinit.c z16f_sysexec.c z16f_irq.c z16f_timerisr.c z16f_serial.c
+CHIP_CSRCS = z16f_clkinit.c z16f_sysexec.c z16f_irq.c z16f_serial.c
+
+ifneq ($(CONFIG_SCHED_TICKLESS),y)
+CHIP_CSRCS += z16f_timerisr.c
+endif
 
 ifeq ($(CONFIG_Z16F_ESPI),y)
 CHIP_CSRCS += z16f_espi.c

arch/z16/src/z16f/z16f_timerisr.c

@@ -99,7 +99,7 @@ int up_timerisr(int irq, uint32_t *regs)
 }
 
 /***************************************************************************
- * Function:  up_timerinit
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize
@@ -107,7 +107,7 @@ int up_timerisr(int irq, uint32_t *regs)
  *
  ***************************************************************************/
 
-void up_timerinit(void)
+void up_timer_initialize(void)
 {
   uint32_t reload;
   uint32_t scaledfreq;

arch/z80/src/common/up_initialize.c

@@ -131,7 +131,7 @@ void up_initialize(void)
   /* Initialize the system timer interrupt */
 
 #if !defined(CONFIG_SUPPRESS_INTERRUPTS) && !defined(CONFIG_SUPPRESS_TIMER_INTS)
-  up_timerinit();
+  up_timer_initialize();
 #endif
 
   /* Initialize the CPU for those that use it (only for the Z180).  This

arch/z80/src/common/up_internal.h

@@ -182,7 +182,7 @@ extern void up_puts(const char *str);
 
 /* Defined in up_timerisr.c */
 
-void up_timerinit(void);
+void up_timer_initialize(void);
 
 /* Defined in board/up_leds.c */
 

arch/z80/src/ez80/Make.defs

@@ -1,7 +1,7 @@
 ############################################################################
 # arch/z80/src/ez80/Make.defs
 #
-#   Copyright (C) 2008-2009 Gregory Nutt. All rights reserved.
+#   Copyright (C) 2008-2009, 2014 Gregory Nutt. All rights reserved.
 #   Author: Gregory Nutt <gnutt@nuttx.org>
 #
 # Redistribution and use in source and binary forms, with or without
@@ -33,27 +33,31 @@
 #
 ############################################################################
 
-HEAD_ASRC	= ez80_vectors.asm
+HEAD_ASRC = ez80_vectors.asm
-HEAD_SSRC	=
+HEAD_SSRC =
 
-CMN_SSRCS	=
+CMN_SSRCS =
-CMN_CSRCS	= up_initialize.c up_allocateheap.c up_createstack.c \
+CMN_CSRCS = up_initialize.c up_allocateheap.c up_createstack.c \
 		  up_releasestack.c up_interruptcontext.c up_blocktask.c \
 		  up_unblocktask.c up_exit.c up_releasepending.c \
 		  up_reprioritizertr.c up_idle.c up_assert.c up_doirq.c \
 		  up_mdelay.c up_udelay.c up_usestack.c up_puts.c
 
-CHIP_ASRCS	= ez80_startup.asm ez80_io.asm ez80_irqsave.asm \
+CHIP_ASRCS = ez80_startup.asm ez80_io.asm ez80_irqsave.asm \
 		  ez80_saveusercontext.asm ez80_restorecontext.asm
 ifeq ($(CONFIG_ARCH_CHIP_EZ80F91),y)
-CHIP_ASRCS	+= ez80f91_init.asm
+CHIP_ASRCS += ez80f91_init.asm
+endif
+
+CHIP_SSRCS  =
+CHIP_CSRCS  = ez80_clock.c ez80_initialstate.c ez80_irq.c ez80_copystate.c
+CHIP_CSRCS += ez80_schedulesigaction.c ez80_sigdeliver.c ez80_lowuart.c
+CHIP_CSRCS += ez80_serial.c ez80_spi.c ez80_i2c.c ez80_registerdump.c
+
+ifneq ($(CONFIG_SCHED_TICKLESS),y)
+CHIP_CSRCS += ez80_timerisr.c
 endif
 
-CHIP_SSRCS	=
-CHIP_CSRCS	= ez80_clock.c ez80_initialstate.c ez80_irq.c ez80_copystate.c \
-		  ez80_schedulesigaction.c ez80_sigdeliver.c ez80_timerisr.c \
-		  ez80_lowuart.c ez80_serial.c ez80_spi.c ez80_i2c.c \
-		  ez80_registerdump.c
 ifeq ($(CONFIG_ARCH_CHIP_EZ80F91),y)
 ifeq ($(CONFIG_EZ80_EMAC),y)
 CHIP_CSRCS	+= ez80_emac.c

arch/z80/src/ez80/ez80_timerisr.c

@@ -102,7 +102,7 @@ int up_timerisr(int irq, chipreg_t *regs)
 }
 
 /***************************************************************************
- * Function:  up_timerinit
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize the timer
@@ -110,7 +110,7 @@ int up_timerisr(int irq, chipreg_t *regs)
  *
  ***************************************************************************/
 
-void up_timerinit(void)
+void up_timer_initialize(void)
 {
   uint16_t reload;
   uint8_t  reg;

arch/z80/src/z180/Make.defs

@@ -1,7 +1,7 @@
 ############################################################################
 # arch/z80/src/z180/Make.defs
 #
-#   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+#   Copyright (C) 2012, 2014 Gregory Nutt. All rights reserved.
 #   Author: Gregory Nutt <gnutt@nuttx.org>
 #
 # Redistribution and use in source and binary forms, with or without
@@ -60,4 +60,7 @@ endif
 CHIP_CSRCS  = z180_copystate.c z180_initialstate.c z180_io.c z180_irq.c
 CHIP_CSRCS += z180_lowscc.c z180_lowserial.c z180_modifiyreg8.c z180_mmu.c
 CHIP_CSRCS += z180_registerdump.c z180_schedulesigaction.c z180_sigdeliver.c
+
+ifneq ($(CONFIG_SCHED_TICKLESS),y)
 CHIP_CSRCS += z180_timerisr.c
+endif

arch/z80/src/z180/z180_timerisr.c

@@ -112,7 +112,7 @@ int up_timerisr(int irq, chipreg_t *regs)
 }
 
 /****************************************************************************
- * Function: up_timerinit
+ * Function: up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize the timer
@@ -120,7 +120,7 @@ int up_timerisr(int irq, chipreg_t *regs)
  *
  ****************************************************************************/
 
-void up_timerinit(void)
+void up_timer_initialize(void)
 {
   uint8_t regval;
 

arch/z80/src/z8/Make.defs

@@ -1,7 +1,7 @@
 ############################################################################
 # arch/z80/src/z8/Make.defs
 #
-#   Copyright (C) 2008-2009 Gregory Nutt. All rights reserved.
+#   Copyright (C) 2008-2009, 2014 Gregory Nutt. All rights reserved.
 #   Author: Gregory Nutt <gnutt@nuttx.org>
 #
 # Redistribution and use in source and binary forms, with or without
@@ -33,17 +33,20 @@
 #
 ############################################################################
 
-HEAD_SSRC	= z8_head.S
+HEAD_SSRC = z8_head.S
 
-CMN_SSRCS	=
+CMN_SSRCS =
-CMN_CSRCS	= up_initialize.c up_allocateheap.c up_createstack.c \
+CMN_CSRCS = up_initialize.c up_allocateheap.c up_createstack.c \
 		  up_releasestack.c up_interruptcontext.c up_blocktask.c \
 		  up_unblocktask.c up_exit.c up_releasepending.c \
 		  up_reprioritizertr.c up_idle.c up_assert.c up_doirq.c \
 		  up_mdelay.c up_udelay.c up_usestack.c
 
-CHIP_SSRCS	= z8_vector.S z8_saveusercontext.S z8_restorecontext.S
+CHIP_SSRCS  = z8_vector.S z8_saveusercontext.S z8_restorecontext.S
-CHIP_CSRCS	= z8_initialstate.c z8_irq.c z8_saveirqcontext.c \
+CHIP_CSRCS  = z8_initialstate.c z8_irq.c z8_saveirqcontext.c
-		  z8_schedulesigaction.c z8_sigdeliver.c z8_timerisr.c \
+CHIP_CSRCS += z8_schedulesigaction.c z8_sigdeliver.c z8_lowuart.c
-		  z8_lowuart.c z8_serial.c z8_i2c.c z8_registerdump.c
+CHIP_CSRCS += z8_serial.c z8_i2c.c z8_registerdump.c
 
+ifneq ($(CONFIG_SCHED_TICKLESS),y)
+CHIP_CSRCS += z8_timerisr.c
+endif

arch/z80/src/z8/z8_timerisr.c

@@ -87,7 +87,7 @@ int up_timerisr(int irq, uint32_t *regs)
 }
 
 /***************************************************************************
- * Function:  up_timerinit
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize the timer
@@ -95,7 +95,7 @@ int up_timerisr(int irq, uint32_t *regs)
  *
  ***************************************************************************/
 
-void up_timerinit(void)
+void up_timer_initialize(void)
 {
   uint32_t reload;
 

configs/ea3131/locked/mklocked.sh

@@ -115,7 +115,7 @@ echo "EXTERN(up_vectoraddrexcptn)" >>ld-locked.inc
 #
 # Of course, this list must be extended as interrupt handlers are added.
 
-echo "EXTERN(up_timerinit)" >>ld-locked.inc
+echo "EXTERN(up_timer_initialize)" >>ld-locked.inc
 
 answer=$(checkconfig CONFIG_LPC31_UART)
 if [ $answer = y ]; then

configs/viewtool-stm32f107/README.txt

@@ -696,7 +696,7 @@ Configurations
             CONFIG_EXAMPLES_NXLINES_CIRCLECOLOR=0xf7bb
             CONFIG_EXAMPLES_NXLINES_BPP=16
 
-       STATUS: Now working; reads 0x8999 as device ID.  This may perhaps
+       STATUS: Not working; reads 0x8999 as device ID.  This may perhaps
                be due to incorrect jumper settings
 
     6. This configuration has been used for verifying the touchscreen on

configs/xtrs/src/xtr_irq.c

@@ -77,7 +77,7 @@ void up_irqinitialize(void)
    *
    * NOTE:  Normally, there are seperate enables for "global" interrupts
    * and specific device interrupts.  In such a "normal" case, the timer
-   * interrupt should be attached and enabled in the function up_timerinit()
+   * interrupt should be attached and enabled in the function up_timer_initialize()
    */
 
   irq_attach(Z80_IRQ_SYSTIMER, (xcpt_t)up_timerisr);

configs/xtrs/src/xtr_timerisr.c

@@ -80,7 +80,7 @@ int up_timerisr(int irq, FAR chipreg_t *regs)
 }
 
 /****************************************************************************
- * Function:  up_timerinit
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize the timer
@@ -88,7 +88,7 @@ int up_timerisr(int irq, FAR chipreg_t *regs)
  *
  ****************************************************************************/
 
-void up_timerinit(void)
+void up_timer_initialize(void)
 {
   /* The timer interrupt was attached in up_irqinitialize -- see comments there */
 }

configs/z80sim/src/z80_irq.c

@@ -77,7 +77,7 @@ void up_irqinitialize(void)
    *
    * NOTE:  Normally, there are seperate enables for "global" interrupts
    * and specific device interrupts.  In such a "normal" case, the timer
-   * interrupt should be attached and enabled in the function up_timerinit()
+   * interrupt should be attached and enabled in the function up_timer_initialize()
    */
 
   irq_attach(Z80_IRQ_SYSTIMER, (xcpt_t)up_timerisr);

configs/z80sim/src/z80_timerisr.c

@@ -80,7 +80,7 @@ int up_timerisr(int irq, FAR chipreg_t *regs)
 }
 
 /****************************************************************************
- * Function:  up_timerinit
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize the timer
@@ -88,7 +88,7 @@ int up_timerisr(int irq, FAR chipreg_t *regs)
  *
  ****************************************************************************/
 
-void up_timerinit(void)
+void up_timer_initialize(void)
 {
   /* The timer interrupt was attached in up_irqinitialize -- see comments there */
 }

include/nuttx/arch.h

@@ -128,8 +128,8 @@ extern "C"
 #endif
 
 /****************************************************************************
- * These are standard interfaces that must be exported to the
+ * These are standard interfaces that must be exported to the base RTOS
- * scheduler from architecture-specific code.
+ * logic from architecture-specific code.
  ****************************************************************************/
 
 /****************************************************************************
@@ -939,6 +939,173 @@ void up_disable_irq(int irq);
 int up_prioritize_irq(int irq, int priority);
 #endif
 
+/****************************************************************************
+ * Tickless OS Support.
+ *
+ * When CONFIG_SCHED_TICKLESS is enabled, all support for timer interrupts
+ * is suppressed and the platform specific code is expected to provide the
+ * following custom functions.
+ *
+ *   void up_timer_initialize(void): Initializes the timer facilities.  Called
+ *     early in the intialization sequence (by up_intialize()).
+ *   int up_timer_gettime(FAR struct timespec *tp):  Returns the current
+ *     time from the platform specific time source.
+ *   int up_timer_cancel(void):  Cancels the interval timer.
+ *   int up_timer_start(FAR const struct timespec *tp): Start (or re-starts)
+ *     the interval timer.
+ *   int up_timer_resolution(FAR struct timespec *tp): Returns the
+ *     resolution of the interval timer.
+ *
+ * The RTOS will provide the following interfaces for use by the platform-
+ * specific interval timer implementation:
+ *
+ *   void sched_timer_expiration(void):  Called by the platform-specific
+ *     logic when the interval timer expires.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: up_timer_initialize
+ *
+ * Description:
+ *   Initializes all platform-specific timer facilities.  This function is
+ *   called early in the initialization sequence by up_intialize().
+ *   On return, the current up-time should be available from
+ *   up_timer_gettime() and the interval timer is ready for use (but not
+ *   actively timing.
+ *
+ *   Provided by platform-specific code and called from the architecture-
+ *   specific logic.
+ *
+ * Input Parameters:
+ *   None
+ *
+ * Returned Value:
+ *   None
+ *
+ * Assumptions:
+ *   Called early in the initialization sequence before any special
+ *   concurrency protections are required.
+ *
+ ****************************************************************************/
+
+#if 0 /* Prototyped in up_internal.h in all cases. */
+void up_timer_initialize(void);
+#endif
+
+/****************************************************************************
+ * Name: up_timer_gettime
+ *
+ * Description:
+ *   Return the elapsed time since power-up (or, more correctly, since
+ *   up_timer_initialize() was called).  This function is functionally equivalent
+ *   to:
+ *
+ *      int clock_gettime(clockid_t clockid, FAR struct timespec *tp);
+ *
+ *   when clockid is CLOCK_MONOTONIC.
+ *
+ *   Provided by platform-specific code and called from the RTOS base code.
+ *
+ * Input Parameters:
+ *   tp - Provides the location in which to return the up-time.
+ *
+ * Returned Value:
+ *   Zero (OK) is returned on success; a negated errno value is returned on
+ *   any failure.
+ *
+ * Assumptions:
+ *   Called from the the normal tasking context.  The implementation must
+ *   provide whatever mutual exclusion is necessary for correct operation.
+ *   This can include disabling interrupts in order to assure atomic register
+ *   operations.
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_SCHED_TICKLESS
+int up_timer_gettime(FAR struct timespec *tp);
+#endif
+
+/****************************************************************************
+ * Name: up_timer_cancel
+ *
+ * Description:
+ *   Cancel the interval timer.  up_timer_expiration() will not be called.
+ *
+ *   Provided by platform-specific code and called from the RTOS base code.
+ *
+ * Input Parameters:
+ *   None
+ *
+ * Returned Value:
+ *   Zero (OK) is returned on success; a negated errno value is returned on
+ *   any failure.
+ *
+ * Assumptions:
+ *   May be called from interrupt level handling or from the normal tasking
+ *   level.  Interrupts may need to be disabled internally to assure
+ *   non-reentrancy.
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_SCHED_TICKLESS
+int up_timer_cancel(void);
+#endif
+
+/****************************************************************************
+ * Name: up_timer_start
+ *
+ * Description:
+ *   Start the interval timer.  up_timer_expiration() will be called at the
+ *   completion of the timeout (unless up_timer_cancel is called to stop
+ *   the timing.
+ *
+ *   Provided by platform-specific code and called from the RTOS base code.
+ *
+ * Input Parameters:
+ *   tp - Provides the time interval until up_timer_expiration() is called.
+ *
+ * Returned Value:
+ *   Zero (OK) is returned on success; a negated errno value is returned on
+ *   any failure.
+ *
+ * Assumptions:
+ *   May be called from interrupt level handling or from the normal tasking
+ *   level.  Interrupts may need to be disabled internally to assure
+ *   non-reentrancy.
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_SCHED_TICKLESS
+int up_timer_start(FAR const struct timespec *tp);
+#endif
+
+/****************************************************************************
+ * Name: up_timer_resolution
+ *
+ * Description:
+ *   Returns the resolution of the interval timer.  This defines the minimal
+ *   time separation between two events and is used for scheduling and for
+ *   setting up timed events.
+ *
+ *   Provided by platform-specific code and called from the RTOS base code.
+ *
+ * Input Parameters:
+ *   tp - Provides the location in which to return the timer resolution.
+ *
+ * Returned Value:
+ *
+ * Assumptions:
+ *   May be called from interrupt level handling or from the normal tasking
+ *   level.  Interrupts may need to be disabled internally to assure
+ *   non-reentrancy.
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_SCHED_TICKLESS
+int up_timer_resolution(FAR struct timespec *tp);
+#endif
+
 /****************************************************************************
  * Name: up_romgetc
  *
@@ -1011,8 +1178,8 @@ void up_cxxinitialize(void);
 #endif
 
 /****************************************************************************
- * These are standard interfaces that are exported by the OS
+ * These are standard interfaces that are exported by the OS for use by the
- * for use by the architecture specific logic
+ * architecture specific logic
  ****************************************************************************/
 
 /****************************************************************************
@@ -1063,6 +1230,26 @@ void weak_function sched_process_cpuload(void);
 
 void irq_dispatch(int irq, FAR void *context);
 
+/****************************************************************************
+ * Name:  sched_timer_expiration
+ *
+ * Description:
+ *   if CONFIG_SCHED_TICKLESS is defined, then this function is provided by
+ *   the RTOS base code and called from platform-specific code when the
+ *   interval timer used to implemented the tick-less OS expires.
+ *
+ * Input Parameters:
+ *
+ * Returned Value:
+ *   Base code implementation assumes that this function is called from
+ *   interrupt handling logic with interrupts disabled.
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_SCHED_TICKLESS
+void sched_timer_expiration(void);
+#endif
+
 /****************************************************************************
  * Name: up_check_stack and friends
  *