diff options
Diffstat (limited to 'nuttx')
-rw-r--r-- | nuttx/arch/arm/src/common/up_createstack.c | 4 | ||||
-rw-r--r-- | nuttx/arch/arm/src/common/up_usestack.c | 4 | ||||
-rwxr-xr-x | nuttx/arch/hc/src/common/up_createstack.c | 130 | ||||
-rwxr-xr-x | nuttx/arch/hc/src/common/up_idle.c | 85 | ||||
-rwxr-xr-x | nuttx/arch/hc/src/common/up_initialize.c | 169 | ||||
-rwxr-xr-x | nuttx/arch/hc/src/common/up_internal.h | 213 | ||||
-rwxr-xr-x | nuttx/arch/hc/src/common/up_interruptcontext.c | 71 | ||||
-rwxr-xr-x | nuttx/arch/hc/src/common/up_puts.c | 76 | ||||
-rwxr-xr-x | nuttx/arch/hc/src/common/up_releasestack.c | 81 | ||||
-rwxr-xr-x | nuttx/arch/hc/src/common/up_usestack.c | 117 |
10 files changed, 946 insertions, 4 deletions
diff --git a/nuttx/arch/arm/src/common/up_createstack.c b/nuttx/arch/arm/src/common/up_createstack.c index 85071269e..c3e213eb4 100644 --- a/nuttx/arch/arm/src/common/up_createstack.c +++ b/nuttx/arch/arm/src/common/up_createstack.c @@ -101,7 +101,7 @@ STATUS up_create_stack(_TCB *tcb, size_t stack_size) size_t top_of_stack; size_t size_of_stack; - /* The Arm7Tdmi uses a push-down stack: the stack grows + /* The ARM uses a push-down stack: the stack grows * toward loweraddresses in memory. The stack pointer * register, points to the lowest, valid work address * (the "top" of the stack). Items on the stack are @@ -110,7 +110,7 @@ STATUS up_create_stack(_TCB *tcb, size_t stack_size) top_of_stack = (uint32)tcb->stack_alloc_ptr + stack_size - 4; - /* The Arm7Tdmi stack must be aligned at word (4 byte) + /* The ARM stack must be aligned at word (4 byte) * boundaries. If necessary top_of_stack must be rounded * down to the next boundary */ diff --git a/nuttx/arch/arm/src/common/up_usestack.c b/nuttx/arch/arm/src/common/up_usestack.c index afd29d52d..c67dd6ad0 100644 --- a/nuttx/arch/arm/src/common/up_usestack.c +++ b/nuttx/arch/arm/src/common/up_usestack.c @@ -92,7 +92,7 @@ STATUS up_use_stack(_TCB *tcb, void *stack, size_t stack_size) tcb->stack_alloc_ptr = stack; - /* The Arm7Tdmi uses a push-down stack: the stack grows + /* The ARM uses a push-down stack: the stack grows * toward loweraddresses in memory. The stack pointer * register, points to the lowest, valid work address * (the "top" of the stack). Items on the stack are @@ -101,7 +101,7 @@ STATUS up_use_stack(_TCB *tcb, void *stack, size_t stack_size) top_of_stack = (uint32)tcb->stack_alloc_ptr + stack_size - 4; - /* The Arm7Tdmi stack must be aligned at word (4 byte) + /* The ARM stack must be aligned at word (4 byte) * boundaries. If necessary top_of_stack must be rounded * down to the next boundary */ diff --git a/nuttx/arch/hc/src/common/up_createstack.c b/nuttx/arch/hc/src/common/up_createstack.c new file mode 100755 index 000000000..1f2cb691c --- /dev/null +++ b/nuttx/arch/hc/src/common/up_createstack.c @@ -0,0 +1,130 @@ +/**************************************************************************** + * arch/hc/src/common/up_createstack.c + * + * Copyright (C) 2009 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> + +#include <sys/types.h> +#include <sched.h> +#include <debug.h> + +#include <nuttx/kmalloc.h> +#include <nuttx/arch.h> + +#include "up_arch.h" +#include "up_internal.h" + +/**************************************************************************** + * Private Types + ****************************************************************************/ + +/**************************************************************************** + * Private Function Prototypes + ****************************************************************************/ + +/**************************************************************************** + * Global Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: up_create_stack + * + * Description: + * Allocate a stack for a new thread and setup up stack-related information + * in the TCB. + * + * The following TCB fields must be initialized: + * adj_stack_size: Stack size after adjustment for hardware, processor, etc. + * This value is retained only for debug purposes. + * stack_alloc_ptr: Pointer to allocated stack + * adj_stack_ptr: Adjusted stack_alloc_ptr for HW. The initial value of the + * stack pointer. + * + * Inputs: + * tcb: The TCB of new task + * stack_size: The requested stack size. At least this much must be + * allocated. + * + ****************************************************************************/ + +STATUS up_create_stack(_TCB *tcb, size_t stack_size) +{ + if (tcb->stack_alloc_ptr && tcb->adj_stack_size != stack_size) + { + sched_free(tcb->stack_alloc_ptr); + tcb->stack_alloc_ptr = NULL; + } + + if (!tcb->stack_alloc_ptr) + { + tcb->stack_alloc_ptr = (uint32 *)malloc(stack_size); + } + + if (tcb->stack_alloc_ptr) + { + size_t top_of_stack; + size_t size_of_stack; + + /* The CPU12 uses a push-down stack: the stack grows + * toward lower addresses in memory. Because the CPU12 stack + * operates as a decrement then store stack, the value assigned + * to the initial stack pointer is one more than the last valid + * stack address. + */ + + top_of_stack = (size_t)tcb->stack_alloc_ptr + stack_size; + + /* The CPU12 stack should be aligned at half-word (2 byte) + * boundaries. If necessary top_of_stack must be rounded + * down to the next boundary + */ + + top_of_stack &= ~1; + size_of_stack = top_of_stack - (size_t)tcb->stack_alloc_ptr; + + /* Save the adjusted stack values in the _TCB */ + + tcb->adj_stack_ptr = (uint32*)top_of_stack; + tcb->adj_stack_size = size_of_stack; + + up_ledon(LED_STACKCREATED); + return OK; + } + + return ERROR; +} diff --git a/nuttx/arch/hc/src/common/up_idle.c b/nuttx/arch/hc/src/common/up_idle.c new file mode 100755 index 000000000..67d1ccae3 --- /dev/null +++ b/nuttx/arch/hc/src/common/up_idle.c @@ -0,0 +1,85 @@ +/**************************************************************************** + * arch/hc/src/common/up_idle.c + * + * Copyright (C) 2009 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> +#include <sys/types.h> +#include <nuttx/arch.h> +#include "up_internal.h" + +/**************************************************************************** + * Private Definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: up_idle + * + * Description: + * up_idle() is the logic that will be executed when their is no other + * ready-to-run task. This is processor idle time and will continue until + * some interrupt occurs to cause a context switch from the idle task. + * + * Processing in this state may be processor-specific. e.g., this is where + * power management operations might be performed. + * + ****************************************************************************/ + +void up_idle(void) +{ +#if defined(CONFIG_SUPPRESS_INTERRUPTS) || defined(CONFIG_SUPPRESS_TIMER_INTS) + /* If the system is idle and there are no timer interrupts, + * then process "fake" timer interrupts. Hopefully, something + * will wake up. + */ + + sched_process_timer(); +#endif +} + diff --git a/nuttx/arch/hc/src/common/up_initialize.c b/nuttx/arch/hc/src/common/up_initialize.c new file mode 100755 index 000000000..725479a07 --- /dev/null +++ b/nuttx/arch/hc/src/common/up_initialize.c @@ -0,0 +1,169 @@ +/**************************************************************************** + * arch/hc/src/common/up_initialize.c + * + * Copyright (C) 2009 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> + +#include <sys/types.h> +#include <debug.h> + +#include <nuttx/arch.h> +#include <nuttx/fs.h> + +#include "up_arch.h" +#include "up_internal.h" + +/**************************************************************************** + * Definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Types + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: up_calibratedelay + * + * Description: + * Delay loops are provided for short timing loops. This function, if + * enabled, will just wait for 100 seconds. Using a stopwatch, you can + * can then determine if the timing loops are properly calibrated. + * + ****************************************************************************/ + +#if defined(CONFIG_ARCH_CALIBRATION) && defined(CONFIG_DEBUG) +static void up_calibratedelay(void) +{ + int i; + lldbg("Beginning 100s delay\n"); + for (i = 0; i < 100; i++) + { + up_mdelay(1000); + } + lldbg("End 100s delay\n"); +} +#else +# define up_calibratedelay() +#endif + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: up_initialize + * + * Description: + * up_initialize will be called once during OS initialization after the + * basic OS services have been initialized. The architecture specific + * details of initializing the OS will be handled here. Such things as + * setting up interrupt service routines, starting the clock, and + * registering device drivers are some of the things that are different + * for each processor and hardware platform. + * + * up_initialize is called after the OS initialized but before the user + * initialization logic has been started and before the libraries have + * been initialized. OS services and driver services are available. + * + ****************************************************************************/ + +void up_initialize(void) +{ + /* Initialize global variables */ + + current_regs = NULL; + + /* Calibrate the timing loop */ + + up_calibratedelay(); + + /* Add any extra memory fragments to the memory manager */ + + up_addregion(); + + /* Initialize the interrupt subsystem */ + + up_irqinitialize(); + + /* Initialize the DMA subsystem if the weak function stm32_dmainitialize has been + * brought into the build + */ + +#ifdef CONFIG_ARCH_DMA +#ifdef CONFIG_HAVE_WEAKFUNCTIONS + if (up_dmainitialize) +#endif + { + up_dmainitialize(); + } +#endif + + /* Initialize the system timer interrupt */ + +#if !defined(CONFIG_SUPPRESS_INTERRUPTS) && !defined(CONFIG_SUPPRESS_TIMER_INTS) + up_timerinit(); +#endif + + /* Register devices */ + +#if CONFIG_NFILE_DESCRIPTORS > 0 + devnull_register(); /* Standard /dev/null */ +#endif + + /* Initialize the serial device driver */ + +#ifdef CONFIG_USE_SERIALDRIVER + up_serialinit(); +#elif defined(CONFIG_DEV_LOWCONSOLE) + lowconsole_init(); +#endif + + /* Initialize the netwok */ + + up_netinitialize(); + + /* Initializ USB */ + + up_usbinitialize(); + + up_ledon(LED_IRQSENABLED); +} diff --git a/nuttx/arch/hc/src/common/up_internal.h b/nuttx/arch/hc/src/common/up_internal.h new file mode 100755 index 000000000..ada4bf8fe --- /dev/null +++ b/nuttx/arch/hc/src/common/up_internal.h @@ -0,0 +1,213 @@ +/**************************************************************************** + * arch/hc/src/common/up_internal.h + * + * Copyright (C) 2009 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +#ifndef __UP_INTERNAL_H +#define __UP_INTERNAL_H + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +/**************************************************************************** + * Definitions + ****************************************************************************/ + +/* Bring-up debug configurations. These are here (vs defconfig) + * because these should only be controlled during low level + * board bring-up and not part of normal platform configuration. + */ + +#undef CONFIG_SUPPRESS_INTERRUPTS /* DEFINED: Do not enable interrupts */ +#undef CONFIG_SUPPRESS_TIMER_INTS /* DEFINED: No timer */ +#undef CONFIG_SUPPRESS_SERIAL_INTS /* DEFINED: Console will poll */ +#undef CONFIG_SUPPRESS_UART_CONFIG /* DEFINED: Do not reconfig UART */ +#undef CONFIG_DUMP_ON_EXIT /* DEFINED: Dump task state on exit */ + +/* Determine which (if any) console driver to use */ + +#if CONFIG_NFILE_DESCRIPTORS == 0 || defined(CONFIG_DEV_LOWCONSOLE) +# undef CONFIG_USE_SERIALDRIVER +# undef CONFIG_USE_EARLYSERIALINIT +#elif defined(CONFIG_DEV_CONSOLE) && CONFIG_NFILE_DESCRIPTORS > 0 +# define CONFIG_USE_SERIALDRIVER 1 +# define CONFIG_USE_EARLYSERIALINIT 1 +#endif + +/* Check if an interrupt stack size is configured */ + +#ifndef CONFIG_ARCH_INTERRUPTSTACK +# define CONFIG_ARCH_INTERRUPTSTACK 0 +#endif + +/* Macros to handle saving and restore interrupt state. In the current CPU12 + * model, the state is copied from the stack to the TCB, but only + * a referenced is passed to get the state from the TCB. + */ + +#define up_savestate(regs) up_copystate(regs, current_regs) +#define up_restorestate(regs) (current_regs = regs) + +/**************************************************************************** + * Public Types + ****************************************************************************/ + +#ifndef __ASSEMBLY__ +typedef void (*up_vector_t)(void); +#endif + +/**************************************************************************** + * Public Variables + ****************************************************************************/ + +#ifndef __ASSEMBLY__ +/* This holds a references to the current interrupt level register storage + * structure. If is non-NULL only during interrupt processing. + */ + +extern uint16 *current_regs; + +/* This is the beginning of heap as provided from processor-specific logic. + * This is the first address in RAM after the loaded program+bss+idle stack. + * The end of the heap is CONFIG_DRAM_END + */ + +extern uint16 g_heapbase; + +/* Address of the saved user stack pointer */ + +#if CONFIG_ARCH_INTERRUPTSTACK > 1 +extern uint32 g_userstack; +#endif + +/**************************************************************************** + * Inline Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/* Start-up functions */ + +extern void up_boot(void); + +/* Context switching functions */ + +extern void up_copystate(uint32 *dest, uint32 *src); +extern void up_decodeirq(uint32 *regs); +extern void up_irqinitialize(void); +extern int up_saveusercontext(uint32 *saveregs); +extern void up_fullcontextrestore(uint32 *restoreregs) __attribute__ ((noreturn)); +extern void up_switchcontext(uint32 *saveregs, uint32 *restoreregs); + +/* Interrupt handling */ + +extern uint16 *up_doirq(int irq, uint32 *regs); +extern void up_maskack_irq(int irq); + +/* Signal handling */ + +extern void up_sigdeliver(void); + +/* System timer initialization */ + +extern void up_timerinit(void); +extern int up_timerisr(int irq, uint32 *regs); + +/* Debug output */ + +#if CONFIG_NFILE_DESCRIPTORS > 0 +extern void up_earlyserialinit(void); +extern void up_serialinit(void); +#else +# define up_earlyserialinit() +# define up_serialinit() +#endif + +#ifdef CONFIG_DEV_LOWCONSOLE +extern void lowconsole_init(void); +#else +# define lowconsole_init() +#endif + +extern void up_lowputc(char ch); +extern void up_puts(const char *str); +extern void up_lowputs(const char *str); + +/* Memory configuration */ + +#if CONFIG_MM_REGIONS > 1 +void up_addregion(void); +#else +# define up_addregion() +#endif + +/* Sub-system/driver initialization */ + +#ifdef CONFIG_ARCH_DMA +extern void weak_function up_dmainitialize(void); +#endif + +extern void up_wdtinit(void); + +#ifdef CONFIG_NET +extern void up_netinitialize(void); +#else +# define up_netinitialize() +#endif + +#ifdef CONFIG_USBDEV +extern void up_usbinitialize(void); +extern void up_usbuninitialize(void); +#else +# define up_usbinitialize() +# define up_usbuninitialize() +#endif + +/* Board-specific functions */ + +#ifdef CONFIG_ARCH_LEDS +extern void up_ledinit(void); +extern void up_ledon(int led); +extern void up_ledoff(int led); +#else +# define up_ledinit() +# define up_ledon(led) +# define up_ledoff(led) +#endif + +#endif /* __ASSEMBLY__ */ + +#endif /* __UP_INTERNAL_H */ diff --git a/nuttx/arch/hc/src/common/up_interruptcontext.c b/nuttx/arch/hc/src/common/up_interruptcontext.c new file mode 100755 index 000000000..dec88f860 --- /dev/null +++ b/nuttx/arch/hc/src/common/up_interruptcontext.c @@ -0,0 +1,71 @@ +/**************************************************************************** + * arch/hc/src/common/up_interruptcontext.c + * + * Copyright (C) 2009 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> +#include <sys/types.h> + +#include <nuttx/arch.h> +#include <nuttx/irq.h> + +#include "up_internal.h" + +/**************************************************************************** + * Private Types + ****************************************************************************/ + +/**************************************************************************** + * Private Function Prototypes + ****************************************************************************/ + +/**************************************************************************** + * Global Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: up_interrupt_context + * + * Description: Return TRUE is we are currently executing in the interrupt + * handler context. + * + ****************************************************************************/ + +boolean up_interrupt_context(void) +{ + return current_regs != NULL; +} diff --git a/nuttx/arch/hc/src/common/up_puts.c b/nuttx/arch/hc/src/common/up_puts.c new file mode 100755 index 000000000..470d0ba59 --- /dev/null +++ b/nuttx/arch/hc/src/common/up_puts.c @@ -0,0 +1,76 @@ +/**************************************************************************** + * arch/hc/src/common/up_puts.c + * + * Copyright (C) 2009 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> +#include <sys/types.h> +#include <nuttx/arch.h> + +#include "up_internal.h" + +/**************************************************************************** + * Definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: up_puts + * + * Description: + * This is a low-level helper function used to support debug. + * + ****************************************************************************/ + +void up_puts(const char *str) +{ + while(*str) + { + up_putc(*str++); + } +} diff --git a/nuttx/arch/hc/src/common/up_releasestack.c b/nuttx/arch/hc/src/common/up_releasestack.c new file mode 100755 index 000000000..0bffef92e --- /dev/null +++ b/nuttx/arch/hc/src/common/up_releasestack.c @@ -0,0 +1,81 @@ +/**************************************************************************** + * arch/hc/src/common/up_releasestack.c + * + * Copyright (C) 2009 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> +#include <sys/types.h> + +#include <sched.h> +#include <debug.h> + +#include <nuttx/arch.h> + +#include "os_internal.h" +#include "up_internal.h" + +/**************************************************************************** + * Private Types + ****************************************************************************/ + +/**************************************************************************** + * Private Function Prototypes + ****************************************************************************/ + +/**************************************************************************** + * Global Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: up_release_stack + * + * Description: + * A task has been stopped. Free all stack related resources retained in + * the defunct TCB. + * + ****************************************************************************/ + +void up_release_stack(_TCB *dtcb) +{ + if (dtcb->stack_alloc_ptr) + { + sched_free(dtcb->stack_alloc_ptr); + dtcb->stack_alloc_ptr = NULL; + } + + dtcb->adj_stack_size = 0; +} diff --git a/nuttx/arch/hc/src/common/up_usestack.c b/nuttx/arch/hc/src/common/up_usestack.c new file mode 100755 index 000000000..c5eb6d8e5 --- /dev/null +++ b/nuttx/arch/hc/src/common/up_usestack.c @@ -0,0 +1,117 @@ +/**************************************************************************** + * arch/hc/src/common/up_usestack.c + * + * Copyright (C) 2009 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> +#include <sys/types.h> +#include <sched.h> +#include <debug.h> +#include <nuttx/kmalloc.h> +#include <nuttx/arch.h> +#include "up_internal.h" + +/**************************************************************************** + * Private Types + ****************************************************************************/ + +/**************************************************************************** + * Private Function Prototypes + ****************************************************************************/ + +/**************************************************************************** + * Global Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: up_use_stack + * + * Description: + * Setup up stack-related information in the TCB using pre-allocated + * stack memory + * + * The following TCB fields must be initialized: + * adj_stack_size: Stack size after adjustment for hardware, processor, etc. + * This value is retained only for debug purposes. + * stack_alloc_ptr: Pointer to allocated stack + * adj_stack_ptr: Adjusted stack_alloc_ptr for HW. The initial value of the + * stack pointer. + * + * Inputs: + * tcb: The TCB of new task + * stack_size: The allocated stack size. + * + ****************************************************************************/ + +STATUS up_use_stack(_TCB *tcb, void *stack, size_t stack_size) +{ + size_t top_of_stack; + size_t size_of_stack; + + if (tcb->stack_alloc_ptr && tcb->adj_stack_size != stack_size) + { + sched_free(tcb->stack_alloc_ptr); + tcb->stack_alloc_ptr = NULL; + } + + /* Save the stack allocation */ + + tcb->stack_alloc_ptr = stack; + + /* The CPU12 uses a push-down stack: the stack grows + * toward lower addresses in memory. Because the CPU12 stack + * operates as a decrement then store stack, the value assigned + * to the initial stack pointer is one more than the last valid + * stack address. + */ + + top_of_stack = (size_t)tcb->stack_alloc_ptr + stack_size; + + /* The CPU12 stack should be aligned at half-word (2 byte) + * boundaries. If necessary top_of_stack must be rounded + * down to the next boundary + */ + + top_of_stack &= ~1; + size_of_stack = top_of_stack - (size_t)tcb->stack_alloc_ptr; + + /* Save the adjusted stack values in the _TCB */ + + tcb->adj_stack_ptr = (uint32*)top_of_stack; + tcb->adj_stack_size = size_of_stack; + return OK; +}
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