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nuttx/arch/x86/src/common/up_internal.h

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/****************************************************************************
* arch/x86/src/common/up_internal.h
*
* Copyright (C) 2011-2013, 2015, 2018 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_X86_SRC_COMMON_UP_INTERNAL_H
#define __ARCH_X86_SRC_COMMON_UP_INTERNAL_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#ifndef __ASSEMBLY__
# include <nuttx/compiler.h>
# include <stdint.h>
#endif
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* 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.
*/
#ifndef CONFIG_DEV_CONSOLE
# undef USE_SERIALDRIVER
# undef USE_EARLYSERIALINIT
#else
# if defined(CONFIG_CONSOLE_SYSLOG)
# 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
/* 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
* 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_restorestate(regs) (g_current_regs = regs)
/****************************************************************************
* Public Types
****************************************************************************/
#ifndef __ASSEMBLY__
typedef void (*up_vector_t)(void);
#endif
/****************************************************************************
* Public Data
****************************************************************************/
#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 *g_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 uint32_t g_idle_topstack;
/* Address of the saved user stack pointer */
#if CONFIG_ARCH_INTERRUPTSTACK > 3
extern uint32_t g_intstackbase;
#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 */
#endif
/****************************************************************************
* Inline Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
#ifndef __ASSEMBLY__
/****************************************************************************
* Name: x86_boardinitialize
*
* Description:
* This function must be provided by the board-specific logic in the
* directory boards/x86/<chip>/<board>/src/.
*
****************************************************************************/
void x86_boardinitialize(void);
/* Defined in files with the same name as the function */
void up_copystate(uint32_t *dest, uint32_t *src);
void up_savestate(uint32_t *regs);
void up_decodeirq(uint32_t *regs);
#ifdef CONFIG_ARCH_DMA
void weak_function up_dma_initialize(void);
#endif
int up_saveusercontext(uint32_t *saveregs);
void up_fullcontextrestore(uint32_t *restoreregs) noreturn_function;
void up_switchcontext(uint32_t *saveregs, uint32_t *restoreregs);
void up_sigdeliver(void);
void up_lowputc(char ch);
void up_puts(const char *str);
void up_lowputs(const char *str);
void up_syscall(uint32_t *regs);
void up_registerdump(uint32_t *regs);
/* Defined in up_allocateheap.c */
#if CONFIG_MM_REGIONS > 1
void up_addregion(void);
#else
# define up_addregion()
#endif
/* Defined in xyz_serial.c */
#ifdef USE_EARLYSERIALINIT
void up_earlyserialinit(void);
#endif
#ifdef USE_SERIALDRIVER
void up_serialinit(void);
#endif
#ifdef CONFIG_RPMSG_UART
void rpmsg_serialinit(void);
#endif
/* Defined in xyz_watchdog.c */
void up_wdtinit(void);
/* Defined in board/up_network.c */
#if defined(CONFIG_NET) && !defined(CONFIG_NETDEV_LATEINIT)
void up_netinitialize(void);
#else
# define up_netinitialize()
#endif
#ifdef CONFIG_USBDEV
void up_usbinitialize(void);
void up_usbuninitialize(void);
#else
# define up_usbinitialize()
# define up_usbuninitialize()
#endif
#endif /* __ASSEMBLY__ */
#endif /* __ARCH_X86_SRC_COMMON_UP_INTERNAL_H */
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