diff options
Diffstat (limited to 'nuttx/arch/arm/src/sam3u/sam3u_allocateheap.c')
| -rw-r--r-- | nuttx/arch/arm/src/sam3u/sam3u_allocateheap.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/nuttx/arch/arm/src/sam3u/sam3u_allocateheap.c b/nuttx/arch/arm/src/sam3u/sam3u_allocateheap.c index 576fae802..1b41812bb 100644 --- a/nuttx/arch/arm/src/sam3u/sam3u_allocateheap.c +++ b/nuttx/arch/arm/src/sam3u/sam3u_allocateheap.c @@ -104,6 +104,24 @@ * If a protected kernel-space heap is provided, the kernel heap must be * allocated (and protected) by an analogous up_allocate_kheap(). * + * The following memory map is assumed for the flat build: + * + * .data region. Size determined at link time. + * .bss region Size determined at link time. + * IDLE thread stack. Size determined by CONFIG_IDLETHREAD_STACKSIZE. + * Heap. Extends to the end of SRAM. + * + * The following memory map is assumed for the kernel build: + * + * Kernel .data region. Size determined at link time. + * Kernel .bss region Size determined at link time. + * Kernel IDLE thread stack. Size determined by CONFIG_IDLETHREAD_STACKSIZE. + * Padding for alignment + * User .data region. Size determined at link time. + * User .bss region Size determined at link time. + * Kernel heap. Size determined by CONFIG_MM_KERNEL_HEAPSIZE. + * User heap. Extends to the end of SRAM. + * ****************************************************************************/ void up_allocate_heap(FAR void **heap_start, size_t *heap_size) |