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nuttx/arch/arm/src/common/up_internal.h

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/****************************************************************************
* common/up_internal.h
*
* Copyright (C) 2007-2013 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* 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 __ARCH_ARM_SRC_COMMON_UP_INTERNAL_H
#define __ARCH_ARM_SRC_COMMON_UP_INTERNAL_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#ifndef __ASSEMBLY__
# include <nuttx/compiler.h>
# include <sys/types.h>
# include <stdint.h>
#endif
/****************************************************************************
* Pre-processor 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 a console is enabled
* and no other console device is specified, then a serial console is
* assumed.
*/
#if !defined(CONFIG_DEV_CONSOLE) || CONFIG_NFILE_DESCRIPTORS == 0
# undef USE_SERIALDRIVER
# undef USE_EARLYSERIALINIT
# undef CONFIG_DEV_LOWCONSOLE
# undef CONFIG_RAMLOG_CONSOLE
#else
# if defined(CONFIG_RAMLOG_CONSOLE)
# undef USE_SERIALDRIVER
# undef USE_EARLYSERIALINIT
# undef CONFIG_DEV_LOWCONSOLE
# elif defined(CONFIG_DEV_LOWCONSOLE)
# undef USE_SERIALDRIVER
# undef USE_EARLYSERIALINIT
# else
# define USE_SERIALDRIVER 1
# define USE_EARLYSERIALINIT 1
# endif
#endif
/* If some other device is used as the console, then the serial driver may
* still be needed. Let's assume that if the upper half serial driver is
* built, then the lower half will also be needed. There is no need for
* the early serial initialization in this case.
*/
#if !defined(USE_SERIALDRIVER) && defined(CONFIG_STANDARD_SERIAL)
# define USE_SERIALDRIVER 1
#endif
/* Determine which device to use as the system logging device */
#ifndef CONFIG_SYSLOG
# undef CONFIG_SYSLOG_CHAR
# undef CONFIG_RAMLOG_SYSLOG
#endif
/* Check if an interrupt stack size is configured */
#ifndef CONFIG_ARCH_INTERRUPTSTACK
# define CONFIG_ARCH_INTERRUPTSTACK 0
#endif
/* Macros to handle saving and restoring interrupt state. In the current ARM
* model, the state is always copied to and from the stack and TCB. In the
* Cortex-M0/3 model, the state is copied from the stack to the TCB, but only
* a referenced is passed to get the state from the TCB. Cortex-M4 is the
* same, but may have additional complexity for floating point support in
* some configurations.
*/
#if defined(CONFIG_ARCH_CORTEXM0) || defined(CONFIG_ARCH_CORTEXM3) || \
defined(CONFIG_ARCH_CORTEXM4)
/* If the floating point unit is present and enabled, then save the
* floating point registers as well as normal ARM registers. This only
* applies if "lazy" floating point register save/restore is used
* (i.e., not CONFIG_ARMV7M_CMNVECTOR).
*/
# if defined(CONFIG_ARCH_FPU) && !defined(CONFIG_ARMV7M_CMNVECTOR)
# define up_savestate(regs) up_copyarmstate(regs, (uint32_t*)current_regs)
# else
# define up_savestate(regs) up_copyfullstate(regs, (uint32_t*)current_regs)
# endif
# define up_restorestate(regs) (current_regs = regs)
/* The Cortex-A5 supports the same mechanism, but only lazy floating point
* register save/restore.
*/
#elif defined(CONFIG_ARCH_CORTEXA5) || defined(CONFIG_ARCH_CORTEXA8)
/* If the floating point unit is present and enabled, then save the
* floating point registers as well as normal ARM registers.
*/
# if defined(CONFIG_ARCH_FPU)
# define up_savestate(regs) up_copyarmstate(regs, (uint32_t*)current_regs)
# else
# define up_savestate(regs) up_copyfullstate(regs, (uint32_t*)current_regs)
# endif
# define up_restorestate(regs) (current_regs = regs)
/* Otherwise, for the ARM7 and ARM9. The state is copied in full from stack
* to stack. This is not very efficient and should be fixed to match Cortex-A5.
*/
#else
/* If the floating point unit is present and enabled, then save the
* floating point registers as well as normal ARM registers. Only "lazy"
* floating point save/restore is supported.
*/
# if defined(CONFIG_ARCH_FPU)
# define up_savestate(regs) up_copyarmstate(regs, (uint32_t*)current_regs)
# else
# define up_savestate(regs) up_copyfullstate(regs, (uint32_t*)current_regs)
# endif
# define up_restorestate(regs) up_copyfullstate((uint32_t*)current_regs, regs)
#endif
/* This is the value used to mark the stack for subsequent stack monitoring
* logic.
*/
#define STACK_COLOR 0xdeadbeef
#define INTSTACK_COLOR 0xdeadbeef
#define HEAP_COLOR 'h'
/****************************************************************************
* 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 volatile uint32_t *current_regs;
/* This is the beginning of heap as provided from up_head.S.
* This is the first address in DRAM after the loaded
* program+bss+idle stack. The end of the heap is
* CONFIG_RAM_END
*/
extern const uint32_t g_idle_topstack;
/* Address of the saved user stack pointer */
#if CONFIG_ARCH_INTERRUPTSTACK > 3
#if defined(CONFIG_ARCH_CORTEXM0) || defined(CONFIG_ARCH_CORTEXM3) || \
defined(CONFIG_ARCH_CORTEXM4)
extern uint32_t g_intstackalloc; /* Allocated stack base */
extern uint32_t g_intstackbase; /* Initial top of interrupt stack */
# else
extern uint32_t g_intstackbase;
# endif
#endif
/* These 'addresses' of these values are setup by the linker script. They are
* not actual uint32_t storage locations! They are only used meaningfully in the
* following way:
*
* - The linker script defines, for example, the symbol_sdata.
* - The declareion extern uint32_t _sdata; makes C happy. C will believe
* that the value _sdata is the address of a uint32_t variable _data (it is
* not!).
* - We can recoved the linker value then by simply taking the address of
* of _data. like: uint32_t *pdata = &_sdata;
*/
extern uint32_t _stext; /* Start of .text */
extern uint32_t _etext; /* End_1 of .text + .rodata */
extern const uint32_t _eronly; /* End+1 of read only section (.text + .rodata) */
extern uint32_t _sdata; /* Start of .data */
extern uint32_t _edata; /* End+1 of .data */
extern uint32_t _sbss; /* Start of .bss */
extern uint32_t _ebss; /* End+1 of .bss */
/* Sometimes, functions must be executed from RAM. In this case, the following
* macro may be used (with GCC!) to specify a function that will execute from
* RAM. For example,
*
* int __ramfunc__ foo (void);
* int __ramfunc__ foo (void) { return bar; }
*
* will create a function named foo that will execute from RAM.
*/
#ifdef CONFIG_ARCH_RAMFUNCS
# define __ramfunc__ __attribute__ ((section(".ramfunc"),long_call))
/* Functions decleared in the .ramfunc section will be packaged together
* by the linker script and stored in FLASH. During boot-up, the start
* logic must include logic to copy the RAM functions from their storage
* location in FLASH to their correct destination in SRAM. The following
* following linker-defined values provide the information to copy the
* functions from flash to RAM.
*/
extern const uint32_t _framfuncs; /* Copy source address in FLASH */
extern uint32_t _sramfuncs; /* Copy destination start address in RAM */
extern uint32_t _eramfuncs; /* Copy destination start address in RAM */
#endif /* CONFIG_ARCH_RAMFUNCS */
#endif /* __ASSEMBLY__ */
/****************************************************************************
* Inline Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
#ifndef __ASSEMBLY__
/* Low level initialization provided by board-level logic ******************/
void up_boot(void);
/* Context switching */
void up_copyfullstate(uint32_t *dest, uint32_t *src);
#ifdef CONFIG_ARCH_FPU
void up_copyarmstate(uint32_t *dest, uint32_t *src);
#endif
void up_decodeirq(uint32_t *regs);
int up_saveusercontext(uint32_t *saveregs);
void up_fullcontextrestore(uint32_t *restoreregs) noreturn_function;
void up_switchcontext(uint32_t *saveregs, uint32_t *restoreregs);
/* Signal handling **********************************************************/
void up_sigdeliver(void);
/* Power management *********************************************************/
#ifdef CONFIG_PM
void up_pminitialize(void);
#else
# define up_pminitialize()
#endif
#if defined(CONFIG_ARCH_CORTEXM0) || defined(CONFIG_ARCH_CORTEXM3) || \
defined(CONFIG_ARCH_CORTEXM4)
void up_systemreset(void) noreturn_function;
#endif
/* Interrupt handling *******************************************************/
void up_irqinitialize(void);
void up_maskack_irq(int irq);
/* Exception handling logic unique to the Cortex-M family */
#if defined(CONFIG_ARCH_CORTEXM0) || defined(CONFIG_ARCH_CORTEXM3) || \
defined(CONFIG_ARCH_CORTEXM4)
/* Interrupt dispatch */
uint32_t *up_doirq(int irq, uint32_t *regs);
/* Exception Handlers */
int up_svcall(int irq, FAR void *context);
int up_hardfault(int irq, FAR void *context);
# if defined(CONFIG_ARCH_CORTEXM3) || defined(CONFIG_ARCH_CORTEXM4)
int up_memfault(int irq, FAR void *context);
# endif /* CONFIG_ARCH_CORTEXM3 || CONFIG_ARCH_CORTEXM4 */
/* Exception handling logic unique to the Cortex-A family (but should be
* back-ported to the ARM7 and ARM9 families).
*/
#elif defined(CONFIG_ARCH_CORTEXA5) || defined(CONFIG_ARCH_CORTEXA8)
/* Interrupt dispatch */
uint32_t *arm_doirq(int irq, uint32_t *regs);
/* Paging support */
#ifdef CONFIG_PAGING
void arm_pginitialize(void);
uint32_t *arm_va2pte(uintptr_t vaddr);
#else /* CONFIG_PAGING */
# define up_pginitialize()
#endif /* CONFIG_PAGING */
/* Exception Handlers */
uint32_t *arm_dataabort(uint32_t *regs, uint32_t dfar, uint32_t dfsr);
uint32_t *arm_prefetchabort(uint32_t *regs, uint32_t ifar, uint32_t ifsr);
uint32_t *arm_syscall(uint32_t *regs);
uint32_t *arm_undefinedinsn(uint32_t *regs);
/* Exception handling logic common to other ARM7 and ARM9 family. */
#else /* ARM7 | ARM9 */
/* Interrupt dispatch */
void up_doirq(int irq, uint32_t *regs);
/* Paging support (and exception handlers) */
#ifdef CONFIG_PAGING
void up_pginitialize(void);
uint32_t *up_va2pte(uintptr_t vaddr);
void up_dataabort(uint32_t *regs, uint32_t far, uint32_t fsr);
#else /* CONFIG_PAGING */
# define up_pginitialize()
void up_dataabort(uint32_t *regs);
#endif /* CONFIG_PAGING */
/* Exception handlers */
void up_prefetchabort(uint32_t *regs);
void up_syscall(uint32_t *regs);
void up_undefinedinsn(uint32_t *regs);
#endif /* CONFIG_ARCH_CORTEXM0 || CONFIG_ARCH_CORTEXM3 || CONFIG_ARCH_CORTEXM4 */
void up_vectorundefinsn(void);
void up_vectorswi(void);
void up_vectorprefetch(void);
void up_vectordata(void);
void up_vectoraddrexcptn(void);
void up_vectorirq(void);
void up_vectorfiq(void);
/* Floating point unit ******************************************************/
#ifdef CONFIG_ARCH_FPU
void up_savefpu(uint32_t *regs);
void up_restorefpu(const uint32_t *regs);
#else
# define up_savefpu(regs)
# define up_restorefpu(regs)
#endif
/* System timer *************************************************************/
void up_timerinit(void);
int up_timerisr(int irq, uint32_t *regs);
/* Low level serial output **************************************************/
void up_lowputc(char ch);
void up_puts(const char *str);
void up_lowputs(const char *str);
#if CONFIG_NFILE_DESCRIPTORS > 0
void up_earlyserialinit(void);
void up_serialinit(void);
#else
# define up_earlyserialinit()
# define up_serialinit()
#endif
/* Defined in drivers/lowconsole.c */
#ifdef CONFIG_DEV_LOWCONSOLE
void lowconsole_init(void);
#else
# define lowconsole_init()
#endif
/* DMA **********************************************************************/
#ifdef CONFIG_ARCH_DMA
void weak_function up_dmainitialize(void);
#endif
/* Memory management ********************************************************/
#if CONFIG_MM_REGIONS > 1
void up_addregion(void);
#else
# define up_addregion()
#endif
/* Watchdog timer ***********************************************************/
void up_wdtinit(void);
/* LED interfaces provided by board-level logic *****************************/
#ifdef CONFIG_ARCH_LEDS
void up_ledinit(void);
void up_ledon(int led);
void up_ledoff(int led);
#else
# define up_ledinit()
# define up_ledon(led)
# define up_ledoff(led)
#endif
/* Networking ***************************************************************/
/* Defined in board/up_network.c for board-specific ethernet implementations,
* or chip/xyx_ethernet.c for chip-specific ethernet implementations, or
* common/up_etherstub.c for a cornercase where the network is enabled yet
* there is no ethernet driver to be initialized.
*/
#ifdef CONFIG_NET
void up_netinitialize(void);
#else
# define up_netinitialize()
#endif
/* USB **********************************************************************/
#ifdef CONFIG_USBDEV
void up_usbinitialize(void);
void up_usbuninitialize(void);
#else
# define up_usbinitialize()
# define up_usbuninitialize()
#endif
/* Random Number Generator (RNG) ********************************************/
#ifdef CONFIG_DEV_RANDOM
void up_rnginitialize(void);
#endif
/* Debug ********************************************************************/
#if defined(CONFIG_DEBUG) && defined(CONFIG_DEBUG_STACK)
void up_stack_color(FAR void *stackbase, size_t nbytes);
#endif
#endif /* __ASSEMBLY__ */
#endif /* __ARCH_ARM_SRC_COMMON_UP_INTERNAL_H */
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