/**************************************************************************** * arch/arm/src/common/sam3u_allocateheap.c * * Copyright (C) 2010, 2013 Gregory Nutt. All rights reserved. * Author: Gregory Nutt * * 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 #include #include #include #include #include #include "chip.h" #include "up_arch.h" #include "up_internal.h" #include "sam3u_internal.h" /**************************************************************************** * Private Definitions ****************************************************************************/ #if CONFIG_MM_REGIONS < 2 # warning "CONFIG_MM_REGIONS < 2: SRAM1 not included in HEAP" #endif #if CONFIG_MM_REGIONS < 3 && !defined(CONFIG_SAM3U_NAND) # warning "CONFIG_MM_REGIONS < 3: NFC SRAM not included in HEAP" #endif #if CONFIG_MM_REGIONS > 2 && defined(CONFIG_SAM3U_NAND) # error "CONFIG_MM_REGIONS > 3 but cannot used NFC SRAM" # undef CONFIG_MM_REGIONS # define CONFIG_MM_REGIONS 2 #endif #if CONFIG_DRAM_END > (SAM3U_INTSRAM0_BASE+CONFIG_SAM3U_SRAM0_SIZE) # error "CONFIG_DRAM_END is beyond the end of SRAM0" # undef CONFIG_DRAM_END # define CONFIG_DRAM_END (SAM3U_INTSRAM0_BASE+CONFIG_SAM3U_SRAM0_SIZE) #elif CONFIG_DRAM_END < (SAM3U_INTSRAM0_BASE+CONFIG_SAM3U_SRAM0_SIZE) # warning "CONFIG_DRAM_END is before end of SRAM0... not all of SRAM0 used" #endif #ifdef CONFIG_MM_KERNEL_HEAPSIZE # if CONFIG_MM_KERNEL_HEAPSIZE < (1 << 5) /* Kernel heap size < 2**5 */ # define KHEAP_SIZE (1 << 4) /* Use size 2**4 */ # elif CONFIG_MM_KERNEL_HEAPSIZE < (1 << 6) /* Kernel heap size < 2**6 */ # define KHEAP_SIZE (1 << 5) /* Use size 2**5 */ # elif CONFIG_MM_KERNEL_HEAPSIZE < (1 << 7) /* Kernel heap size < 2**7 */ # define KHEAP_SIZE (1 << 6) /* Use size 2**6 */ # elif CONFIG_MM_KERNEL_HEAPSIZE < (1 << 8) /* Kernel heap size < 2**8 */ # define KHEAP_SIZE (1 << 7) /* Use size 2**7 */ # elif CONFIG_MM_KERNEL_HEAPSIZE < (1 << 9) /* Kernel heap size < 2**9 */ # define KHEAP_SIZE (1 << 8) /* Use size 2**8 */ # elif CONFIG_MM_KERNEL_HEAPSIZE < (1 << 10) /* Kernel heap size < 2**10 */ # define KHEAP_SIZE (1 << 9) /* Use size 2**9 */ # elif CONFIG_MM_KERNEL_HEAPSIZE < (1 << 11) /* Kernel heap size < 2**11 */ # define KHEAP_SIZE (1 << 10) /* Use size 2**10 */ # elif CONFIG_MM_KERNEL_HEAPSIZE < (1 << 12) /* Kernel heap size < 2**12 */ # define KHEAP_SIZE (1 << 11) /* Use size 2**11 */ # elif CONFIG_MM_KERNEL_HEAPSIZE < (1 << 13) /* Kernel heap size < 2**13 */ # define KHEAP_SIZE (1 << 12) /* Use size 2**12 */ # elif CONFIG_MM_KERNEL_HEAPSIZE < (1 << 14) /* Kernel heap size < 2**14 */ # define KHEAP_SIZE (1 << 13) /* Use size 2**13 */ # elif CONFIG_MM_KERNEL_HEAPSIZE < (1 << 15) /* Kernel heap size < 2**15 */ # define KHEAP_SIZE (1 << 14) /* Use size 2**14 */ # elif CONFIG_MM_KERNEL_HEAPSIZE < (1 << 16) /* Kernel heap size < 2**16 */ # define KHEAP_SIZE (1 << 15) /* Use size 2**15 */ # elif CONFIG_MM_KERNEL_HEAPSIZE < (1 << 17) /* Kernel heap size < 2**17 */ # define KHEAP_SIZE (1 << 16) /* Use size 2**16 */ # elif CONFIG_MM_KERNEL_HEAPSIZE < (1 << 18) /* Kernel heap size < 2**18 */ # define KHEAP_SIZE (1 << 17) /* Use size 2**17 */ # elif CONFIG_MM_KERNEL_HEAPSIZE < (1 << 19) /* Kernel heap size < 2**19 */ # define KHEAP_SIZE (1 << 18) /* Use size 2**18 */ # elif CONFIG_MM_KERNEL_HEAPSIZE < (1 << 20) /* Kernel heap size < 2**20 */ # define KHEAP_SIZE (1 << 19) /* Use size 2**19 */ # elif CONFIG_MM_KERNEL_HEAPSIZE < (1 << 21) /* Kernel heap size < 2**21 */ # define KHEAP_SIZE (1 << 20) /* Use size 2**20 */ # elif CONFIG_MM_KERNEL_HEAPSIZE < (1 << 22) /* Kernel heap size < 2**22 */ # define KHEAP_SIZE (1 << 21) /* Use size 2**21 */ # elif CONFIG_MM_KERNEL_HEAPSIZE < (1 << 23) /* Kernel heap size < 2**23 */ # define KHEAP_SIZE (1 << 22) /* Use size 2**22 */ # elif CONFIG_MM_KERNEL_HEAPSIZE < (1 << 24) /* Kernel heap size < 2**24 */ # define KHEAP_SIZE (1 << 23) /* Use size 2**23 */ # elif CONFIG_MM_KERNEL_HEAPSIZE < (1 << 25) /* Kernel heap size < 2**25 */ # define KHEAP_SIZE (1 << 24) /* Use size 2**24 */ # elif CONFIG_MM_KERNEL_HEAPSIZE < (1 << 26) /* Kernel heap size < 2**26 */ # define KHEAP_SIZE (1 << 25) /* Use size 2**25 */ # elif CONFIG_MM_KERNEL_HEAPSIZE < (1 << 27) /* Kernel heap size < 2**27 */ # define KHEAP_SIZE (1 << 26) /* Use size 2**26 */ # elif CONFIG_MM_KERNEL_HEAPSIZE < (1 << 28) /* Kernel heap size < 2**28 */ # define KHEAP_SIZE (1 << 27) /* Use size 2**27 */ # elif CONFIG_MM_KERNEL_HEAPSIZE < (1 << 29) /* Kernel heap size < 2**29 */ # define KHEAP_SIZE (1 << 28) /* Use size 2**28 */ # elif CONFIG_MM_KERNEL_HEAPSIZE < (1 << 30) /* Kernel heap size < 2**30 */ # define KHEAP_SIZE (1 << 29) /* Use size 2**29 */ # elif CONFIG_MM_KERNEL_HEAPSIZE < (1 << 31) /* Kernel heap size < 2**31 */ # define KHEAP_SIZE (1 << 30) /* Use size 2**30 */ # else # define KHEAP_SIZE (1 << 31) /* Use size 2**31 */ # endif # define KHEAP_MASK (KHEAP_SIZE - 1) #endif /**************************************************************************** * Private Data ****************************************************************************/ /**************************************************************************** * Private Functions ****************************************************************************/ /**************************************************************************** * Public Functions ****************************************************************************/ /**************************************************************************** * Name: up_allocate_heap * * Description: * This function will be called to dynamically set aside the heap region. * * For the kernel build (CONFIG_NUTTX_KERNEL=y) with both kernel- and * user-space heaps (CONFIG_MM_KERNEL_HEAP=y), this function provides the * size of the unprotected, user-space heap. * * If a protected kernel-space heap is provided, the kernel heap must be * allocated (and protected) by an analogous up_allocate_kheap(). * ****************************************************************************/ void up_allocate_heap(FAR void **heap_start, size_t *heap_size) { #if defined(CONFIG_NUTTX_KERNEL) && defined(CONFIG_MM_KERNEL_HEAP) uintptr_t kbase = ((uintptr_t)g_heapbase + KHEAP_MASK) & ~KHEAP_MASK; uintptr_t ubase = kbase + KHEAP_SIZE; size_t usize = CONFIG_DRAM_END - ubase; DEBUGASSERT(ubase < (uintptr_t)CONFIG_DRAM_END); /* Return the heap settings */ up_ledon(LED_HEAPALLOCATE); *heap_start = (FAR void*)ubase; *heap_size = usize; /* Allow access to the heap memory */ sam3u_mpu_uheap((uintptr_t)ubase, usize); #else size_t size = CONFIG_DRAM_END - g_heapbase; /* Return the heap settings */ up_ledon(LED_HEAPALLOCATE); *heap_start = (FAR void*)g_heapbase; *heap_size = size; /* Allow user access to the user heap memory */ sam3u_mpu_uheap((uintptr_t)g_heapbase, size); #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) { uintptr_t kbase = ((uintptr_t)g_heapbase + KHEAP_MASK) & ~KHEAP_MASK; DEBUGASSERT((kbase + KHEAP_SIZE) < (uintptr_t)CONFIG_DRAM_END); /* Return the heap settings */ *heap_start = (FAR void*)kbase; *heap_size = KHEAP_SIZE; } #endif /************************************************************************ * Name: up_addregion * * Description: * Memory may be added in non-contiguous chunks. Additional chunks are * added by calling this function. * ************************************************************************/ #if CONFIG_MM_REGIONS > 1 void up_addregion(void) { /* Add the region */ kmm_addregion((FAR void*)SAM3U_INTSRAM1_BASE, CONFIG_SAM3U_SRAM1_SIZE); /* Allow user access to the heap memory */ sam3u_mpu_uheap(SAM3U_INTSRAM1_BASE, CONFIG_SAM3U_SRAM1_SIZE); /* Add the region */ #if CONFIG_MM_REGIONS > 2 kmm_addregion((FAR void*)SAM3U_NFCSRAM_BASE, CONFIG_SAM3U_NFCSRAM_SIZE); /* Allow user access to the heap memory */ sam3u_mpu_uheap(SAM3U_NFCSRAM_BASE, CONFIG_SAM3U_NFCSRAM_SIZE); #endif } #endif