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git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@4200 7fd9a85b-ad96-42d3-883c-3090e2eb8679
264 lines
8.5 KiB
C
Executable File
264 lines
8.5 KiB
C
Executable File
/****************************************************************************
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* arch/mips/common/up_internal.h
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*
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* Copyright (C) 2011 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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#ifndef __ARCH_MIPS_SRC_COMMON_UP_INTERNAL_H
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#define __ARCH_MIPS_SRC_COMMON_UP_INTERNAL_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#ifndef __ASSEMBLY__
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# include <stdint.h>
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# include <stdbool.h>
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#endif
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* Bring-up debug configurations. These are here (vs defconfig)
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* because these should only be controlled during low level
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* board bring-up and not part of normal platform configuration.
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*/
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#undef CONFIG_SUPPRESS_INTERRUPTS /* DEFINED: Do not enable interrupts */
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#undef CONFIG_SUPPRESS_TIMER_INTS /* DEFINED: No timer */
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#undef CONFIG_SUPPRESS_SERIAL_INTS /* DEFINED: Console will poll */
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#undef CONFIG_SUPPRESS_UART_CONFIG /* DEFINED: Do not reconfig UART */
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#undef CONFIG_DUMP_ON_EXIT /* DEFINED: Dump task state on exit */
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/* Determine which (if any) console driver to use */
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#if CONFIG_NFILE_DESCRIPTORS == 0 || defined(CONFIG_DEV_LOWCONSOLE)
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# undef CONFIG_USE_SERIALDRIVER
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# undef CONFIG_USE_EARLYSERIALINIT
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#elif defined(CONFIG_DEV_CONSOLE) && CONFIG_NFILE_DESCRIPTORS > 0
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# define CONFIG_USE_SERIALDRIVER 1
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# define CONFIG_USE_EARLYSERIALINIT 1
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#endif
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/* Check if an interrupt stack size is configured */
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#ifndef CONFIG_ARCH_INTERRUPTSTACK
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# define CONFIG_ARCH_INTERRUPTSTACK 0
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#endif
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/* In the MIPS model, the state is copied from the stack to the TCB, but
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* only a referenced is passed to get the state from the TCB.
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*/
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#define up_savestate(regs) up_copystate(regs, (uint32_t*)current_regs)
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#define up_restorestate(regs) (current_regs = regs)
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/****************************************************************************
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* Public Types
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****************************************************************************/
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#ifndef __ASSEMBLY__
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typedef void (*up_vector_t)(void);
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#endif
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/****************************************************************************
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* Public Variables
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****************************************************************************/
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#ifndef __ASSEMBLY__
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/* This holds a references to the current interrupt level register storage
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* structure. If is non-NULL only during interrupt processing.
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*/
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extern volatile uint32_t *current_regs;
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/* This is the beginning of heap as provided from up_head.S. This is the
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* first address in DRAM after the loaded program+bss+idle stack. The end
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* of the heap is CONFIG_DRAM_END
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*/
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extern uint32_t g_heapbase;
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/* Address of the saved user stack pointer */
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#if CONFIG_ARCH_INTERRUPTSTACK > 3
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extern void g_intstackbase;
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#endif
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/* These 'addresses' of these values are setup by the linker script. They are
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* not actual uint32_t storage locations! They are only used meaningfully in the
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* following way:
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*
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* - The linker script defines, for example, the symbol_sdata.
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* - The declaration extern uint32_t _sdata; makes C happy. C will believe
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* that the value _sdata is the address of a uint32_t variable _data (it is
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* not!).
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* - We can recoved the linker value then by simply taking the address of
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* of _data. like: uint32_t *pdata = &_sdata;
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*/
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extern uint32_t _stext; /* Start of .text */
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extern uint32_t _etext; /* End+1 of .text + .rodata */
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extern const uint32_t _data_loaddr; /* Start of .data in FLASH */
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extern uint32_t _sdata; /* Start of .data */
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extern uint32_t _edata; /* End+1 of .data */
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extern uint32_t _sbss; /* Start of .bss */
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extern uint32_t _ebss; /* End+1 of .bss */
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#ifdef CONFIG_PIC32MX_RAMFUNCS
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extern uint32_t _sramfunc; /* Start of ramfuncs */
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extern uint32_t _eramfunc; /* End+1 of ramfuncs */
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extern uint32_t _ramfunc_loadaddr; /* Start of ramfuncs in FLASH */
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extern uint32_t _ramfunc_sizeof; /* Size of ramfuncs */
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extern uint32_t _bmxdkpba_address; /* BMX register setting */
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extern uint32_t _bmxdudba_address; /* BMX register setting */
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extern uint32_t _bmxdupba_address; /* BMX register setting */
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#endif /* CONFIG_PIC32MX_RAMFUNCS */
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#endif /* __ASSEMBLY__ */
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/****************************************************************************
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* Inline Functions
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****************************************************************************/
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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#ifndef __ASSEMBLY__
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/* Common Functions *********************************************************/
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/* Common functions define in arch/mips/src/common. These may be replaced
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* with chip-specific functions of the same name if needed. See also
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* functions prototyped in include/nuttx/arch.h.
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*/
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/* Context switching */
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extern void up_copystate(uint32_t *dest, uint32_t *src);
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/* Serial output */
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extern void up_puts(const char *str);
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extern void up_lowputs(const char *str);
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/* Debug */
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#ifdef CONFIG_ARCH_STACKDUMP
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extern void up_dumpstate(void);
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#else
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# define up_dumpstate()
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#endif
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/* Common MIPS32 functions defined in arch/mips/src/MIPS32 */
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/* IRQs */
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extern uint32_t *up_doirq(int irq, uint32_t *regs);
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/* Software interrupt 0 handler */
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extern int up_swint0(int irq, FAR void *context);
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/* Signals */
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extern void up_sigdeliver(void);
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/* Chip-specific functions **************************************************/
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/* Chip specific functions defined in arch/mips/src/<chip> */
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/* IRQs */
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extern void up_irqinitialize(void);
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extern bool up_pending_irq(int irq);
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extern void up_clrpend_irq(int irq);
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/* DMA */
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#ifdef CONFIG_ARCH_DMA
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extern void weak_function up_dmainitialize(void);
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#endif
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/* Memory management */
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#if CONFIG_MM_REGIONS > 1
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void up_addregion(void);
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#else
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# define up_addregion()
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#endif
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/* Serial output */
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extern void up_lowputc(char ch);
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#if CONFIG_NFILE_DESCRIPTORS > 0
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extern void up_earlyserialinit(void);
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extern void up_serialinit(void);
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#else
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# define up_earlyserialinit()
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# define up_serialinit()
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#endif
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/* System timer */
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extern void up_timerinit(void);
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/* Network */
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#ifdef CONFIG_NET
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extern void up_netinitialize(void);
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#else
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# define up_netinitialize()
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#endif
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/* USB */
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#ifdef CONFIG_USBDEV
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extern void up_usbinitialize(void);
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extern void up_usbuninitialize(void);
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#else
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# define up_usbinitialize()
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# define up_usbuninitialize()
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#endif
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/* Board-specific functions *************************************************/
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/* Board specific functions defined in config/<board>/src */
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/* LEDs */
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#ifdef CONFIG_ARCH_LEDS
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extern void up_ledon(int led);
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extern void up_ledoff(int led);
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#else
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# define up_ledinit()
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# define up_ledon(led)
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# define up_ledoff(led)
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#endif
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#endif /* __ASSEMBLY__ */
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#endif /* __ARCH_MIPS_SRC_COMMON_UP_INTERNAL_H */
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