LM32: First of many LM32 source files
This commit is contained in:
Ramtin Amin
Gregory Nutt
parent
6a78c0f113
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62b394d06f
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/****************************************************************************
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* arch/misoc/src/common/lm32.h
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*
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* Copyright (C) 2016 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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* Ramtin Amin <keytwo@gmail.com>
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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_MISOC_SRC_COMMON_LM32_H
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#define __ARCH_MISOC_SRC_COMMON_LM32_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#ifndef __ASSEMBLY__
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# include <nuttx/compiler.h>
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# include <sys/types.h>
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# include <stdint.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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/* This is the value used to mark the stack for subsequent stack monitoring
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* logic.
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*/
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#define STACK_COLOR 0xdeadbeef
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#define INTSTACK_COLOR 0xdeadbeef
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#define HEAP_COLOR 'h'
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/* In the RISC_V 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) lm32_copystate(regs, (uint32_t*)g_current_regs)
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#define up_restorestate(regs) (g_current_regs = regs)
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/* Determine which (if any) console driver to use. If a console is enabled
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* and no other console device is specified, then a serial console is
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* assumed.
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*/
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#if !defined(CONFIG_DEV_CONSOLE) || CONFIG_NFILE_DESCRIPTORS <= 0
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# undef USE_SERIALDRIVER
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# undef USE_EARLYSERIALINIT
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# undef CONFIG_DEV_LOWCONSOLE
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# undef CONFIG_RAMLOG_CONSOLE
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#else
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# if defined(CONFIG_RAMLOG_CONSOLE)
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# undef USE_SERIALDRIVER
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# undef USE_EARLYSERIALINIT
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# undef CONFIG_DEV_LOWCONSOLE
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# elif defined(CONFIG_DEV_LOWCONSOLE)
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# undef USE_SERIALDRIVER
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# undef USE_EARLYSERIALINIT
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# else
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# define USE_SERIALDRIVER 1
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# define USE_EARLYSERIALINIT 1
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# endif
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#endif
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/* Low-level register access */
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#define getreg8(a) (*(volatile uint8_t *)(a))
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#define putreg8(v,a) (*(volatile uint8_t *)(a) = (v))
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#define getreg16(a) (*(volatile uint16_t *)(a))
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#define putreg16(v,a) (*(volatile uint16_t *)(a) = (v))
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#define getreg32(a) (*(volatile uint32_t *)(a))
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#define putreg32(v,a) (*(volatile uint32_t *)(a) = (v))
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/****************************************************************************
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* Public Types
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****************************************************************************/
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/****************************************************************************
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* Public Data
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****************************************************************************/
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extern volatile uint32_t *g_current_regs;
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extern uint32_t g_idle_topstack;
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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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/* Low level initialization provided by board-level logic ******************/
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void lm32_board_initialize(void);
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/* Memory allocation ********************************************************/
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#if CONFIG_MM_REGIONS > 1
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void lm32_add_region(void);
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#endif
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/* Context switching ********************************************************/
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void lm32_copystate(uint32_t *dest, uint32_t *src);
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/* IRQ initialization *******************************************************/
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void lm32_irq_initialize(void);
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/* System timer *************************************************************/
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void lm32_timer_initialize(void);
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int lm32_timerisr(int irq, void *context);
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/* Software interrupts ******************************************************/
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uint32_t lm32_swint(int irq, FAR void *context);
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/* Signal handling **********************************************************/
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void lm32_sigdeliver(void);
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/* Atomic modification of registers *****************************************/
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void modifyreg8(unsigned int addr, uint8_t clearbits, uint8_t setbits);
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void modifyreg16(unsigned int addr, uint16_t clearbits, uint16_t setbits);
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void modifyreg32(unsigned int addr, uint32_t clearbits, uint32_t setbits);
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/* Debug ********************************************************************/
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void lm32_dumpstate(void);
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#undef EXTERN
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#ifdef __cplusplus
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}
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#endif
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#endif /* __ASSEMBLY__ */
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#endif /* __ARCH_MISOC_SRC_COMMON_LM32_H */
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@ -0,0 +1,104 @@
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/****************************************************************************
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* arch/misoc/src/common/lm32_allocateheap.c
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*
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* Copyright (C) 2016 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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* Ramtin Amin <keytwo@gmail.com>
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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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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/types.h>
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#include <debug.h>
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#include <nuttx/arch.h>
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#include <nuttx/board.h>
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#include <arch/board/board.h>
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#include "lm32.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Private Data
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****************************************************************************/
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: up_allocate_heap
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*
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* Description:
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* This function will be called to dynamically set aside the heap region.
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*
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* For the kernel build (CONFIG_BUILD_KERNEL=y) with both kernel- and
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* user-space heaps (CONFIG_MM_KERNEL_HEAP=y), this function provides the
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* size of the unprotected, user-space heap.
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*
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* If a protected kernel-space heap is provided, the kernel heap must be
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* allocated (and protected) by an analogous up_allocate_kheap().
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*
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****************************************************************************/
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void up_allocate_heap(FAR void **heap_start, size_t *heap_size)
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{
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board_autoled_on(LED_HEAPALLOCATE);
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*heap_start = (FAR void *)g_idle_topstack;
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*heap_size = CONFIG_RAM_END - g_idle_topstack;
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}
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/****************************************************************************
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* Name: lm32_add_region
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*
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* Description:
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* Memory may be added in non-contiguous chunks. Additional chunks are
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* added by calling this function.
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*
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****************************************************************************/
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#if CONFIG_MM_REGIONS > 1
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void lm32_add_region(void)
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{
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#warning Missing logic
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}
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#endif
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