/****************************************************************************
* arch/mips/common/up_internal.h
*
* Copyright (C) 2011, 2012 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_MIPS_SRC_COMMON_UP_INTERNAL_H
#define __ARCH_MIPS_SRC_COMMON_UP_INTERNAL_H
/****************************************************************************
* Included Files
****************************************************************************/
#ifndef __ASSEMBLY__
# include <stdint.h>
# include <stdbool.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
/* In the MIPS 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, (uint32_t*)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 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 uint32_t g_idle_topstack;
/* Address of the saved user stack pointer */
#if CONFIG_ARCH_INTERRUPTSTACK > 3
extern void 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 declaration 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 _data_loaddr; /* Start of .data in FLASH */
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 */
#ifdef CONFIG_ARCH_RAMFUNCS
extern uint32_t _sramfunc; /* Start of ramfuncs */
extern uint32_t _eramfunc; /* End+1 of ramfuncs */
extern uint32_t _ramfunc_loadaddr; /* Start of ramfuncs in FLASH */
extern uint32_t _ramfunc_sizeof; /* Size of ramfuncs */
extern uint32_t _bmxdkpba_address; /* BMX register setting */
extern uint32_t _bmxdudba_address; /* BMX register setting */
extern uint32_t _bmxdupba_address; /* BMX register setting */
#endif /* CONFIG_ARCH_RAMFUNCS */
#endif /* __ASSEMBLY__ */
/****************************************************************************
* Inline Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
#ifndef __ASSEMBLY__
/* Common Functions *********************************************************/
/* Common functions define in arch/mips/src/common. These may be replaced
* with chip-specific functions of the same name if needed. See also
* functions prototyped in include/nuttx/arch.h.
*/
/* Context switching */
extern void up_copystate(uint32_t *dest, uint32_t *src);
/* Serial output */
extern void up_puts(const char *str);
extern void up_lowputs(const char *str);
/* Defined in drivers/lowconsole.c */
#ifdef CONFIG_DEV_LOWCONSOLE
extern void lowconsole_init(void);
#else
# define lowconsole_init()
#endif
/* Debug */
#ifdef CONFIG_ARCH_STACKDUMP
extern void up_dumpstate(void);
#else
# define up_dumpstate()
#endif
/* Common MIPS32 functions defined in arch/mips/src/MIPS32 */
/* IRQs */
extern uint32_t *up_doirq(int irq, uint32_t *regs);
/* Software interrupt 0 handler */
extern int up_swint0(int irq, FAR void *context);
/* Signals */
extern void up_sigdeliver(void);
/* Chip-specific functions **************************************************/
/* Chip specific functions defined in arch/mips/src/<chip> */
/* IRQs */
extern void up_irqinitialize(void);
extern bool up_pending_irq(int irq);
extern void up_clrpend_irq(int irq);
/* DMA */
#ifdef CONFIG_ARCH_DMA
extern void weak_function up_dmainitialize(void);
#endif
/* Memory management */
#if CONFIG_MM_REGIONS > 1
void up_addregion(void);
#else
# define up_addregion()
#endif
/* Serial output */
extern void up_lowputc(char ch);
#if CONFIG_NFILE_DESCRIPTORS > 0
extern void up_earlyserialinit(void);
extern void up_serialinit(void);
#else
# define up_earlyserialinit()
# define up_serialinit()
#endif
/* System timer */
extern void up_timer_initialize(void);
/* Network */
#ifdef CONFIG_NET
extern void up_netinitialize(void);
#else
# define up_netinitialize()
#endif
/* USB */
#ifdef CONFIG_USBDEV
extern void up_usbinitialize(void);
extern void up_usbuninitialize(void);
#else
# define up_usbinitialize()
# define up_usbuninitialize()
#endif
#endif /* __ASSEMBLY__ */
#endif /* __ARCH_MIPS_SRC_COMMON_UP_INTERNAL_H */
