58cf518670
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@184 42af7a65-404d-4744-a932-0658087f49c3
151 lines
5.2 KiB
C
151 lines
5.2 KiB
C
/**************************************************************************
|
|
* up_internal.h
|
|
*
|
|
* Copyright (C) 2007 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 Gregory Nutt 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_UP_INTERNAL_H
|
|
#define __ARCH_UP_INTERNAL_H
|
|
|
|
/**************************************************************************
|
|
* Included Files
|
|
**************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
#include <arch/irq.h>
|
|
|
|
#if defined(CONFIG_ARCH_BOARD_PJRC_87C52)
|
|
# include <arch/board/pjrc.h>
|
|
#else
|
|
# warning "805x board not recognized"
|
|
#endif
|
|
|
|
/**************************************************************************
|
|
* Public Definitions
|
|
**************************************************************************/
|
|
|
|
/**************************************************************************
|
|
* Public Types
|
|
**************************************************************************/
|
|
|
|
/**************************************************************************
|
|
* Public Variables
|
|
**************************************************************************/
|
|
|
|
#ifndef __ASSEMBLY__
|
|
|
|
/* This is the top of the stack containing the interrupt
|
|
* stack frame. It is set when processing an interrupt. It
|
|
* is also cleared when the interrupt returns so this can
|
|
* also be used like a boolean indication that we are in an
|
|
* interrupt.
|
|
*/
|
|
|
|
extern ubyte g_irqtos;
|
|
|
|
/* Registers are saved in the following global array during
|
|
* interrupt processing. If a context switch is performed
|
|
* during the interrupt handling, these registers will be
|
|
* copied into the TCB again (NOTE: We could save a copy
|
|
* if the interrupt handling logic saved the registers
|
|
* directly into (_TCB*)g_readytorun.head->xcp.regs).
|
|
*/
|
|
|
|
extern ubyte g_irqregs[REGS_SIZE];
|
|
|
|
/* If during execution of an interrup handler, a context
|
|
* switch must be performed, the follwing will be set to
|
|
* to that address of the relevant context structure. The
|
|
* actual switch will be deferred until the time that the
|
|
* the interrupt exits.
|
|
*/
|
|
|
|
extern FAR struct xcptcontext *g_irqcontext;
|
|
|
|
/* It is faster to look up 8-bit shifts in this table than
|
|
* to comput them.
|
|
*/
|
|
|
|
extern const ubyte g_ntobit[8];
|
|
|
|
#endif /* __ASSEMBLY */
|
|
|
|
/**************************************************************************
|
|
* Public Function Prototypes
|
|
**************************************************************************/
|
|
|
|
#ifndef __ASSEMBLY__
|
|
|
|
#if CONFIG_MM_REGIONS > 1
|
|
extern void up_addregion(void);
|
|
#endif
|
|
extern void up_delay(ubyte milliseconds) __naked;
|
|
extern void up_irqinitialize(void);
|
|
extern void up_restorecontext(FAR struct xcptcontext *context) _naked;
|
|
extern void up_restoreregisters(FAR ubyte *regs) _naked;
|
|
extern ubyte up_savecontext(FAR struct xcptcontext *context) __naked;
|
|
extern void up_saveregisters(FAR ubyte *regs) _naked;
|
|
extern void up_saveirqcontext(FAR struct xcptcontext *context);
|
|
extern void up_timerinit(void);
|
|
|
|
/* Defined in up_debug.c */
|
|
|
|
#if defined(CONFIG_ARCH_BRINGUP)
|
|
extern void up_puthex(ubyte hex) __naked;
|
|
extern void up_puthex16(int hex) __naked;
|
|
extern void up_putnl(void) __naked;
|
|
extern void up_puts(__code char *ptr);
|
|
#endif
|
|
|
|
#if defined(CONFIG_FRAME_DUMP) && defined(CONFIG_ARCH_BRINGUP)
|
|
extern void up_dumpstack(void);
|
|
extern void up_dumpframe(FAR struct xcptcontext *context);
|
|
#else
|
|
# define up_dumpstack()
|
|
# define up_dumpframe(x)
|
|
#endif
|
|
|
|
/* Defined in board/up_leds.c */
|
|
|
|
#ifdef CONFIG_ARCH_LEDS
|
|
extern void up_ledinit(void);
|
|
extern void up_ledon(ubyte led);
|
|
extern void up_ledoff(ubyte led);
|
|
#else
|
|
# define up_ledinit()
|
|
# define up_ledon(led)
|
|
# define up_ledoff(led)
|
|
#endif
|
|
|
|
#endif /* __ASSEMBLY */
|
|
#endif /* __ARCH_UP_INTERNAL_H */
|