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Add logic to initialize SAM3U user applications

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3482 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2011-04-08 15:24:50 +00:00
parent 94757a2ada
commit 1c0306cb11
5 changed files with 225 additions and 1 deletions
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5
arch/arm/src/sam3u/Make.defs
View File

@ -57,6 +57,10 @@ CHIP_CSRCS = sam3u_allocateheap.c sam3u_clockconfig.c sam3u_gpioirq.c \
# Configuration-dependent SAM3U files
ifeq ($(CONFIG_NUTTX_KERNEL),y)
CHIP_CSRCS += sam3u_userspace.c sam3u_mpuinit.c
endif
ifeq ($(CONFIG_SAM3U_DMA),y)
CHIP_CSRCS += sam3u_dmac.c
endif
@ -64,3 +68,4 @@ endif
ifeq ($(CONFIG_SAM3U_HSMCI),y)
CHIP_CSRCS += sam3u_hsmci.c
endif

30
arch/arm/src/sam3u/sam3u_internal.h
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@ -1,7 +1,7 @@
/************************************************************************************
* arch/arm/src/sam3u/sam3u_internal.h
*
* Copyright (C) 2009-2010 Gregory Nutt. All rights reserved.
* Copyright (C) 2009-2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
@ -437,6 +437,34 @@ EXTERN void sam3u_clockconfig(void);
EXTERN void sam3u_lowsetup(void);
/****************************************************************************
* Name: sam3u_userspace
*
* Description:
* For the case of the separate user-/kernel-space build, perform whatever
* platform specific initialization of the user memory is required.
* Normally this just means initializing the user space .data and .bss
* segements.
*
****************************************************************************/
#ifndef CONFIG_NUTTX_KERNEL
EXTERN void sam3u_userspace(void);
#endif
/****************************************************************************
* Name: sam3u_mpuinitialize
*
* Description:
* Configure the MPU to permit user-space access to only restricted SAM3U
* resources.
*
****************************************************************************/
#ifndef CONFIG_NUTTX_KERNEL
EXTERN void sam3u_mpuinitialize(void);
#endif
/************************************************************************************
* Name: sam3u_gpioirqinitialize
*

76
arch/arm/src/sam3u/sam3u_mpuinit.c Executable file
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@ -0,0 +1,76 @@
/****************************************************************************
* arch/arm/src/common/sam3u_mpuinit.c
*
* Copyright (C) 2011 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 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 <arch/board/user_map.h>
#ifndef CONFIG_NUTTX_KERNEL
/****************************************************************************
* Private Definitions
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: sam3u_mpuinitialize
*
* Description:
* Configure the MPU to permit user-space access to only restricted SAM3U
* resources.
*
****************************************************************************/
void sam3u_mpuinitialize(void)
{
# warning "Not implemented"
}
#endif /* CONFIG_NUTTX_KERNEL */

10
arch/arm/src/sam3u/sam3u_start.c
View File

@ -134,6 +134,16 @@ void __start(void)
#endif
showprogress('D');
/* For the case of the separate user-/kernel-space build, perform whatever
* platform specific initialization of the user memory is required.
* Normally this just means initializing the user space .data and .bss
* segements.
*/
#ifndef CONFIG_NUTTX_KERNEL
sam3u_userspace();
#endif
/* Initialize onboard resources */
sam3u_boardinitialize();

105
arch/arm/src/sam3u/sam3u_userspace.c Executable file
View File

@ -0,0 +1,105 @@
/****************************************************************************
* arch/arm/src/common/sam3u_userspace.c
*
* Copyright (C) 2011 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 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 <arch/board/user_map.h>
#ifndef CONFIG_NUTTX_KERNEL
/****************************************************************************
* Private Definitions
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: sam3u_userspace
*
* Description:
* For the case of the separate user-/kernel-space build, perform whatever
* platform specific initialization of the user memory is required.
* Normally this just means initializing the user space .data and .bss
* segements.
*
****************************************************************************/
void sam3u_userspace(void)
{
uint8_t *src;
uint8_t *dest;
uint8_t *end;
/* Clear all of user-space .bss */
DEBUGASSERT((uintptr_t)CONFIG_USER_DATADESTSTART <= CONFIG_USER_DATADESTEND);
dest = (uint8_t*)CONFIG_USER_BSSSTART;
end = (uint8_t*)CONFIG_USER_BSSEND;
while (dest != end)
{
*dest++ = 0;
}
/* Initialize all of user-space .data */
DEBUGASSERT((uintptr_t)CONFIG_USER_DATADESTSTART <= CONFIG_USER_DATADESTEND);
src = (uint8_t*)CONFIG_USER_DATASOURCE;
dest = (uint8_t*)CONFIG_USER_DATADESTSTART;
end = (uint8_t*)CONFIG_USER_DATADESTEND;
while (dest != end)
{
*dest++ = *src++;
}
}
#endif /* CONFIG_NUTTX_KERNEL */