diff options
Diffstat (limited to 'nuttx/arch/arm/src/lpc17xx')
-rw-r--r-- | nuttx/arch/arm/src/lpc17xx/Make.defs | 8 | ||||
-rw-r--r-- | nuttx/arch/arm/src/lpc17xx/lpc17_allocateheap.c | 76 | ||||
-rw-r--r-- | nuttx/arch/arm/src/lpc17xx/lpc17_mpuinit.c | 124 | ||||
-rw-r--r-- | nuttx/arch/arm/src/lpc17xx/lpc17_mpuinit.h | 90 | ||||
-rw-r--r-- | nuttx/arch/arm/src/lpc17xx/lpc17_start.c | 16 | ||||
-rw-r--r-- | nuttx/arch/arm/src/lpc17xx/lpc17_userspace.c | 119 | ||||
-rw-r--r-- | nuttx/arch/arm/src/lpc17xx/lpc17_userspace.h | 77 |
7 files changed, 507 insertions, 3 deletions
diff --git a/nuttx/arch/arm/src/lpc17xx/Make.defs b/nuttx/arch/arm/src/lpc17xx/Make.defs index b7bf38279..679e51a5f 100644 --- a/nuttx/arch/arm/src/lpc17xx/Make.defs +++ b/nuttx/arch/arm/src/lpc17xx/Make.defs @@ -63,6 +63,10 @@ ifeq ($(CONFIG_ARCH_MEMCPY),y) CMN_ASRCS += up_memcpy.S endif +ifeq ($(CONFIG_NUTTX_KERNEL),y) +CMN_CSRCS += up_mpu.c +endif + ifeq ($(CONFIG_NET),y) ifneq ($(CONFIG_LPC17_ETHERNET),y) CMN_CSRCS += up_etherstub.c @@ -91,6 +95,10 @@ ifeq ($(CONFIG_ARMV7M_CMNVECTOR),y) CHIP_ASRCS += lpc17_vectors.S endif +ifeq ($(CONFIG_NUTTX_KERNEL),y) +CHIP_CSRCS += lpc17_userspace.c lpc17_mpuinit.c +endif + ifeq ($(CONFIG_LPC17_EMC),y) CHIP_CSRCS += lpc17_emc.c endif diff --git a/nuttx/arch/arm/src/lpc17xx/lpc17_allocateheap.c b/nuttx/arch/arm/src/lpc17xx/lpc17_allocateheap.c index c49ceed36..b5cacce27 100644 --- a/nuttx/arch/arm/src/lpc17xx/lpc17_allocateheap.c +++ b/nuttx/arch/arm/src/lpc17xx/lpc17_allocateheap.c @@ -53,6 +53,7 @@ #include "chip/lpc17_memorymap.h" #include "lpc17_emacram.h" #include "lpc17_ohciram.h" +#include "lpc17_mpuinit.h" /**************************************************************************** * Private Definitions @@ -195,11 +196,84 @@ void up_allocate_heap(FAR void **heap_start, size_t *heap_size) { +#if defined(CONFIG_NUTTX_KERNEL) && defined(CONFIG_MM_KERNEL_HEAP) + /* Get the unaligned size of the user-space heap */ + + uintptr_t ubase = (uintptr_t)g_heapbase + CONFIG_MM_KERNEL_HEAPSIZE; + size_t usize = CONFIG_DRAM_END - ubase; + int log2; + + DEBUGASSERT(ubase < (uintptr_t)CONFIG_DRAM_END); + + /* Adjust that size to account for MPU alignment requirements. + * NOTE that there is an implicit assumption that the CONFIG_DRAM_END + * is aligned to the MPU requirement. + */ + + log2 = (int)mpu_log2regionsize(usize); + DEBUGASSERT((CONFIG_DRAM_END & ((1 << log2) - 1)) == 0); + + usize = (1 << log2); + ubase = CONFIG_DRAM_END - usize + + /* Return the user-space heap settings */ + + up_ledon(LED_HEAPALLOCATE); + *heap_start = (FAR void*)ubase; + *heap_size = usize; + + /* Allow user-mode access to the user heap memory */ + + lpc17_mpu_uheap((uintptr_t)ubase, usize); +#else + + /* Return the heap settings */ + up_ledon(LED_HEAPALLOCATE); *heap_start = (FAR void*)g_heapbase; - *heap_size = CONFIG_DRAM_END - g_heapbase; + *heap_size = CONFIG_DRAM_END - g_heapbase; +#endif } +/**************************************************************************** + * Name: up_allocate_kheap + * + * Description: + * For the kernel build (CONFIG_NUTTX_KERNEL=y) with both kernel- and + * user-space heaps (CONFIG_MM_KERNEL_HEAP=y), this function allocates + * (and protects) the kernel-space heap. + * + ****************************************************************************/ + +#if defined(CONFIG_NUTTX_KERNEL) && defined(CONFIG_MM_KERNEL_HEAP) +void up_allocate_kheap(FAR void **heap_start, size_t *heap_size) +{ + /* Get the unaligned size of the user-space heap */ + + uintptr_t ubase = (uintptr_t)g_heapbase + CONFIG_MM_KERNEL_HEAPSIZE; + size_t usize = CONFIG_DRAM_END - ubase; + int log2; + + DEBUGASSERT(ubase < (uintptr_t)CONFIG_DRAM_END); + + /* Adjust that size to account for MPU alignment requirements. + * NOTE that there is an implicit assumption that the CONFIG_DRAM_END + * is aligned to the MPU requirement. + */ + + log2 = (int)mpu_log2regionsize(usize); + DEBUGASSERT((CONFIG_DRAM_END & ((1 << log2) - 1)) == 0); + + usize = (1 << log2); + ubase = CONFIG_DRAM_END - usize + + /* Return the kernel heap settings */ + + *heap_start = (FAR void*)g_heapbase; + *heap_size = ubase - (uintptr_t)g_heapbase; +} +#endif + /************************************************************************ * Name: up_addregion * diff --git a/nuttx/arch/arm/src/lpc17xx/lpc17_mpuinit.c b/nuttx/arch/arm/src/lpc17xx/lpc17_mpuinit.c new file mode 100644 index 000000000..0a90229e7 --- /dev/null +++ b/nuttx/arch/arm/src/lpc17xx/lpc17_mpuinit.c @@ -0,0 +1,124 @@ +/**************************************************************************** + * arch/arm/src/common/lpc17_mpuinit.c + * + * Copyright (C) 2011, 2013 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 <assert.h> + +#include <nuttx/userspace.h> + +#include "mpu.h" +#include "lp17_mpuinit.h" + +#if defined(CONFIG_NUTTX_KERNEL) && defined(CONFIG_ARMV7M_MPU) + +/**************************************************************************** + * Private Definitions + ****************************************************************************/ + +#ifndef MAX +# define MAX(a,b) a > b ? a : b +#endif + +#ifndef MIN +# define MIN(a,b) a < b ? a : b +#endif + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: lpc17_mpuinitialize + * + * Description: + * Configure the MPU to permit user-space access to only restricted SAM3U + * resources. + * + ****************************************************************************/ + +void lpc17_mpuinitialize(void) +{ + uintptr_t datastart = MIN(USERSPACE->us_datastart, USERSPACE->us_bssstart); + uintptr_t dataend = MAX(USERSPACE->us_dataend, USERSPACE->us_bssend); + + DEBUGASSERT(USERSPACE->us_textend >= USERSPACE->us_textstart && + dataend >= datastart); + + /* Show MPU information */ + + mpu_showtype(); + + /* Configure user flash and SRAM space */ + + mpu_userflash(USERSPACE->us_textstart, + USERSPACE->us_textend - USERSPACE->us_textstart); + + mpu_userintsram(datastart, dataend - datastart); + + /* Then enable the MPU */ + + mpu_control(true, false, true); +} + +/**************************************************************************** + * Name: lpc17_mpu_uheap + * + * Description: + * Map the user-heap region. + * + * This logic may need an extension to handle external SDRAM). + * + ****************************************************************************/ + +void lpc17_mpu_uheap(uintptr_t start, size_t size) +{ + mpu_userintsram(start, size); +} + +#endif /* CONFIG_NUTTX_KERNEL && CONFIG_ARMV7M_MPU */ + diff --git a/nuttx/arch/arm/src/lpc17xx/lpc17_mpuinit.h b/nuttx/arch/arm/src/lpc17xx/lpc17_mpuinit.h new file mode 100644 index 000000000..4d0e6944f --- /dev/null +++ b/nuttx/arch/arm/src/lpc17xx/lpc17_mpuinit.h @@ -0,0 +1,90 @@ +/************************************************************************************ + * arch/arm/src/lpc17xx/lpc17_mpuinit.h + * + * Copyright (C) 2013 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_ARM_SRC_LPC17XX_LPC17_MPUINIT_H +#define __ARCH_ARM_SRC_LPC17XX_LPC17_MPUINIT_H + +/************************************************************************************ + * Included Files + ************************************************************************************/ + +#include <nuttx/config.h> + +/************************************************************************************ + * Pre-processor Definitions + ************************************************************************************/ + +/************************************************************************************ + * Public Types + ************************************************************************************/ + +/************************************************************************************ + * Public Data + ************************************************************************************/ + +/************************************************************************************ + * Public Functions + ************************************************************************************/ + +/**************************************************************************** + * Name: lpc17_mpuinitialize + * + * Description: + * Configure the MPU to permit user-space access to only unrestricted MCU + * resources. + * + ****************************************************************************/ + +#ifdef CONFIG_NUTTX_KERNEL +void lpc17_mpuinitialize(void); +#else +# define lpc17_mpuinitialize() +#endif + +/**************************************************************************** + * Name: lpc17_mpu_uheap + * + * Description: + * Map the user heap region. + * + ****************************************************************************/ + +#ifdef CONFIG_NUTTX_KERNEL +void lpc17_mpu_uheap(uintptr_t start, size_t size); +#else +# define lpc17_mpu_uheap(start,size) +#endif + +#endif /* __ARCH_ARM_SRC_LPC17XX_LPC17_MPUINIT_H */ diff --git a/nuttx/arch/arm/src/lpc17xx/lpc17_start.c b/nuttx/arch/arm/src/lpc17xx/lpc17_start.c index e13abe15c..e3e4013d0 100644 --- a/nuttx/arch/arm/src/lpc17xx/lpc17_start.c +++ b/nuttx/arch/arm/src/lpc17xx/lpc17_start.c @@ -2,7 +2,7 @@ * arch/arm/src/lpc17xx/lpc17_start.c * arch/arm/src/chip/lpc17_start.c * - * Copyright (C) 2010, 2012 Gregory Nutt. All rights reserved. + * Copyright (C) 2010, 2012-2013 Gregory Nutt. All rights reserved. * Author: Gregory Nutt <gnutt@nuttx.org> * * Redistribution and use in source and binary forms, with or without @@ -52,6 +52,7 @@ #include "lpc17_clockconfig.h" #include "lpc17_lowputc.h" +#include "lpc17_userspace.h" #ifdef CONFIG_ARCH_FPU # include "nvic.h" @@ -230,10 +231,21 @@ 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. + */ + +#ifdef CONFIG_NUTTX_KERNEL + lpc17_userspace(); + showprogress('E'); +#endif + /* Initialize onboard resources */ lpc17_boardinitialize(); - showprogress('E'); + showprogress('F'); /* Then start NuttX */ diff --git a/nuttx/arch/arm/src/lpc17xx/lpc17_userspace.c b/nuttx/arch/arm/src/lpc17xx/lpc17_userspace.c new file mode 100644 index 000000000..ffc935af3 --- /dev/null +++ b/nuttx/arch/arm/src/lpc17xx/lpc17_userspace.c @@ -0,0 +1,119 @@ +/**************************************************************************** + * arch/arm/src/lpc17xx/lpc17_userspace.c + * + * Copyright (C) 2013 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 <assert.h> + +#include <nuttx/userspace.h> + +#include "lpc17_mpuinit.h" +#include "lpc17_userspace.h" + +#ifdef CONFIG_NUTTX_KERNEL + +/**************************************************************************** + * Private Definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: lpc17_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 + * segments. + * + ****************************************************************************/ + +void lpc17_userspace(void) +{ + uint8_t *src; + uint8_t *dest; + uint8_t *end; + + /* Clear all of user-space .bss */ + + DEBUGASSERT(USERSPACE->us_bssstart != 0 && USERSPACE->us_bssend != 0 && + USERSPACE->us_bssstart <= USERSPACE->us_bssend); + + dest = (uint8_t*)USERSPACE->us_bssstart; + end = (uint8_t*)USERSPACE->us_bssend; + + while (dest != end) + { + *dest++ = 0; + } + + /* Initialize all of user-space .data */ + + DEBUGASSERT(USERSPACE->us_datasource != 0 && + USERSPACE->us_datastart != 0 && USERSPACE->us_dataend != 0 && + USERSPACE->us_datastart <= USERSPACE->us_dataend); + + src = (uint8_t*)USERSPACE->us_datasource; + dest = (uint8_t*)USERSPACE->us_datastart; + end = (uint8_t*)USERSPACE->us_dataend; + + while (dest != end) + { + *dest++ = *src++; + } + + /* Configure the MPU to permit user-space access to its FLASH and RAM */ + + lpc17_mpuinitialize(); +} + +#endif /* CONFIG_NUTTX_KERNEL */ + diff --git a/nuttx/arch/arm/src/lpc17xx/lpc17_userspace.h b/nuttx/arch/arm/src/lpc17xx/lpc17_userspace.h new file mode 100644 index 000000000..c4d265cc0 --- /dev/null +++ b/nuttx/arch/arm/src/lpc17xx/lpc17_userspace.h @@ -0,0 +1,77 @@ +/************************************************************************************ + * arch/arm/src/lpc17xx/lpc17_qei.h + * + * Copyright (C) 2013 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_ARM_SRC_LPC17XX_LPC17_USERSPACE_H +#define __ARCH_ARM_SRC_LPC17XX_LPC17_USERSPACE_H + +/************************************************************************************ + * Included Files + ************************************************************************************/ + +#include <nuttx/config.h> +#include "chip/lpc17_qei.h" + +/************************************************************************************ + * Pre-processor Definitions + ************************************************************************************/ + +/************************************************************************************ + * Public Types + ************************************************************************************/ + +/************************************************************************************ + * Public Data + ************************************************************************************/ + +/************************************************************************************ + * Public Functions + ************************************************************************************/ + +/**************************************************************************** + * Name: lpc17_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 + * segments. + * + ****************************************************************************/ + +#ifdef CONFIG_NUTTX_KERNEL +void lpc17_userspace(void); +#endif + +#endif /* __ARCH_ARM_SRC_LPC17XX_LPC17_USERSPACE_H */ |