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LM32: More standard, common helper functions

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This commit is contained in:
Gregory Nutt 2016-11-04 14:42:17 -06:00
parent 45caca804a
commit af0d7a96fe
9 changed files with 506 additions and 7 deletions
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42
arch/misoc/src/common/misoc.h
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@ -60,5 +60,47 @@
void misoc_serial_initialize(void);
/****************************************************************************
* Name: misoc_puts
*
* Description:
* This is a low-level helper function used to support debug.
*
****************************************************************************/
void misoc_puts(const char *str);
/****************************************************************************
* Name: misoc_lowputc
*
* Description:
* Low-level, blocking character output the the serial console.
*
****************************************************************************/
void misoc_lowputc(char ch);
/****************************************************************************
* Name: misoc_lowputs
*
* Description:
* This is a low-level helper function used to support debug.
*
****************************************************************************/
void misoc_lowputs(const char *str);
/****************************************************************************
* Name: modifyreg[N]
*
* Description:
* Atomic modification of registers.
*
****************************************************************************/
void modifyreg8(unsigned int addr, uint8_t clearbits, uint8_t setbits);
void modifyreg16(unsigned int addr, uint16_t clearbits, uint16_t setbits);
void modifyreg32(unsigned int addr, uint32_t clearbits, uint32_t setbits);
#endif /* __ASSEMBLY__ */
#endif /* __ARCH_MISOC_SRC_COMMON_MISOC_H */

62
arch/misoc/src/common/misoc_lowputs.c Normal file
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@ -0,0 +1,62 @@
/****************************************************************************
* arch/misoc/src/common/misoc_lowputs.c
*
* Copyright (C) 2016 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.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include "misoc.h"
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: misoc_lowputs
*
* Description:
* This is a low-level helper function used to support debug.
*
****************************************************************************/
void misoc_lowputs(const char *str)
{
while (*str)
{
up_lowputc(*str++);
}
}

73
arch/misoc/src/common/misoc_modifyreg16.c Normal file
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@ -0,0 +1,73 @@
/****************************************************************************
* arch/misoc/src/common/misoc_modifyreg16.c
*
* Copyright (C) 2016 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.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
#include <debug.h>
#include <nuttx/irq.h>
#include <nuttx/arch.h>
#include "misoc.h"
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: modifyreg16
*
* Description:
* Atomically modify the specified bits in a memory mapped register
*
****************************************************************************/
void modifyreg16(unsigned int addr, uint16_t clearbits, uint16_t setbits)
{
irqstate_t flags;
uint16_t regval;
flags = enter_critical_section();
regval = getreg16(addr);
regval &= ~clearbits;
regval |= setbits;
putreg16(regval, addr);
leave_critical_section(flags);
}

73
arch/misoc/src/common/misoc_modifyreg32.c Normal file
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@ -0,0 +1,73 @@
/****************************************************************************
* arch/misoc/src/common/misoc_modifyreg32.c
*
* Copyright (C) 2016 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.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
#include <debug.h>
#include <nuttx/irq.h>
#include <nuttx/arch.h>
#include "misoc_arch.h"
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: modifyreg32
*
* Description:
* Atomically modify the specified bits in a memory mapped register
*
****************************************************************************/
void modifyreg32(unsigned int addr, uint32_t clearbits, uint32_t setbits)
{
irqstate_t flags;
uint32_t regval;
flags = enter_critical_section();
regval = getreg32(addr);
regval &= ~clearbits;
regval |= setbits;
putreg32(regval, addr);
leave_critical_section(flags);
}

73
arch/misoc/src/common/misoc_modifyreg8.c Normal file
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@ -0,0 +1,73 @@
/****************************************************************************
* arch/misoc/src/common/misoc_modifyreg8.c
*
* Copyright (C) 2016 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.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
#include <debug.h>
#include <nuttx/irq.h>
#include <nuttx/arch.h>
#include "misoc.h"
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: modifyreg8
*
* Description:
* Atomically modify the specified bits in a memory mapped register
*
****************************************************************************/
void modifyreg8(unsigned int addr, uint8_t clearbits, uint8_t setbits)
{
irqstate_t flags;
uint8_t regval;
flags = enter_critical_section();
regval = getreg8(addr);
regval &= ~clearbits;
regval |= setbits;
putreg8(regval, addr);
leave_critical_section(flags);
}

63
arch/misoc/src/common/misoc_puts.c Normal file
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@ -0,0 +1,63 @@
/****************************************************************************
* arch/misoc/src/common/misoc_puts.c
*
* Copyright (C) 2016 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.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <nuttx/arch.h>
#include "misoc.h"
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: misoc_puts
*
* Description:
* This is a low-level helper function used to support debug.
*
****************************************************************************/
void misoc_puts(const char *str)
{
while (*str)
{
misoc_putc(*str++);
}
}

117
arch/misoc/src/common/misoc_udelay.c Normal file
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@ -0,0 +1,117 @@
/****************************************************************************
* arch/misoc/src/common/up_udelay.c
*
* Copyright (C) 2016 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.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <nuttx/arch.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#define CONFIG_BOARD_LOOPSPER100USEC ((CONFIG_BOARD_LOOPSPERMSEC+5)/10)
#define CONFIG_BOARD_LOOPSPER10USEC ((CONFIG_BOARD_LOOPSPERMSEC+50)/100)
#define CONFIG_BOARD_LOOPSPERUSEC ((CONFIG_BOARD_LOOPSPERMSEC+500)/1000)
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: up_udelay
*
* Description:
* Delay inline for the requested number of microseconds. NOTE: Because
* of all of the setup, several microseconds will be lost before the actual
* timing looop begins. Thus, the delay will always be a few microseconds
* longer than requested.
*
* *** NOT multi-tasking friendly ***
*
* ASSUMPTIONS:
* The setting CONFIG_BOARD_LOOPSPERMSEC has been calibrated
*
****************************************************************************/
void up_udelay(useconds_t microseconds)
{
volatile int i;
/* We'll do this a little at a time because we expect that the
* CONFIG_BOARD_LOOPSPERUSEC is very inaccurate during to truncation in
* the divisions of its calculation. We'll use the largest values that
* we can in order to prevent significant error buildup in the loops.
*/
while (microseconds > 1000)
{
for (i = 0; i < CONFIG_BOARD_LOOPSPERMSEC; i++)
{
}
microseconds -= 1000;
}
while (microseconds > 100)
{
for (i = 0; i < CONFIG_BOARD_LOOPSPER100USEC; i++)
{
}
microseconds -= 100;
}
while (microseconds > 10)
{
for (i = 0; i < CONFIG_BOARD_LOOPSPER10USEC; i++)
{
}
microseconds -= 10;
}
while (microseconds > 0)
{
for (i = 0; i < CONFIG_BOARD_LOOPSPERUSEC; i++)
{
}
microseconds--;
}
}

4
arch/misoc/src/lm32/Make.defs
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@ -37,7 +37,9 @@
HEAD_ASRC = lm32_vectors.S
CMN_ASRCS =
CMN_CSRCS = misoc_serial.c misoc_mdelay.c
CMN_CSRCS = misoc_lowputs.c misoc_serial.c misoc_mdelay.c
CMN_CSRCS += misoc_modifyreg8.cmisoc_modifyreg16.c misoc_modifyreg32.c
CMN_CSRCS += misoc_puts.c misoc_udelay.c
CHIP_ASRCS = lm32_syscall.S

6
arch/misoc/src/lm32/lm32.h
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@ -157,12 +157,6 @@ void lm32_timer_initialize(void);
void lm32_sigdeliver(void);
/* Atomic modification of registers *****************************************/
void modifyreg8(unsigned int addr, uint8_t clearbits, uint8_t setbits);
void modifyreg16(unsigned int addr, uint16_t clearbits, uint16_t setbits);
void modifyreg32(unsigned int addr, uint32_t clearbits, uint32_t setbits);
/* Debug ********************************************************************/
void lm32_dumpstate(void);