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/****************************************************************************
* arch/arm/src/common/sam3u_allocateheap.c
*
* Copyright (C) 2010, 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 <sys/types.h>
#include <debug.h>
#include <nuttx/arch.h>
#include <nuttx/kmalloc.h>
#include <arch/board/board.h>
#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
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