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/****************************************************************************
* arch/arm/src/lpc43xx/lpc43_allocateheap.c
*
* Copyright (C) 2012-2013 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 <stdint.h>
#include <assert.h>
#include <debug.h>
#include <nuttx/arch.h>
#include <nuttx/kmalloc.h>
#include <nuttx/userspace.h>
#include <arch/board/board.h>
#include "chip.h"
#include "up_arch.h"
#include "up_internal.h"
#include "lpc43_emacram.h"
#include "lpc43_usbram.h"
/****************************************************************************
* Private Definitions
****************************************************************************/
/* Get customizations for each supported chip.
*
* SRAM Resources
* --------------------- -------- ------- ------- ------- ------- -------
* Local SRAM LPC4310 LPC4320 LPC4330 LPC4350 LPC4353 LPC4357
* --------------------- -------- ------- ------- ------- ------- -------
* BANK 0 (0x1000 0000) 96Kb 96Kb 128Kb 128Kb 32Kb 32Kb
* BANK 1 (0x1008 0000) 40Kb 40Kb 72Kb 72Kb 40Kb 40Kb
* --------------------- -------- ------- ------- ------- ------- -------
* SUBTOTAL 136Kb 136Kb 200Kb 200Kb 72Kb 72Kb
* --------------------- -------- ------- ------- ------- ------- -------
* AHB SRAM LPC4310 LPC4320 LPC4330 LPC4350 LPC4353 LPC4357
* --------------------- -------- ------- ------- ------- ------- -------
* BANK 0 (0x2000 0000) 16Kb 48Kb 48Kb 48Kb 48Kb 48Kb
* BANK 1 (0x2000 8000) NOTE 1 NOTE 1 NOTE 1 NOTE 1 NOTE 1
* BANK 2 (0x2000 c000) 16Kb 16Kb 16Kb 16Kb 16Kb 16Kb
* --------------------- -------- ------- ------- ------- ------- -------
* SUBTOTAL 32Kb 64Kb 64Kb 64Kb 64Kb 64Kb
* --------------------- -------- ------- ------- ------- ------- -------
* TOTAL 168Kb 200Kb 264Kb 264Kb 136Kb 136Kb
* --------------------- -------- ------- ------- ------- ------- -------
*
* --------------------- -------- ------- ------- ------- ------- -------
* FLASH LPC4310 LPC4320 LPC4330 LPC4350 LPC4353 LPC4357
* --------------------- -------- ------- ------- ------- ------- -------
* BANK A (0x1a00 0000) 256Kb 512Kb
* BANK B (0x1b00 8000) 256Kb 512Kb
* --------------------- -------- ------- ------- ------- ------- -------
* TOTAL None None None None 512Kb 1024Kb
* --------------------- -------- ------- ------- ------- ------- -------
*
* NOTE 1: The 64Kb of AHB of SRAM on the LPC4350/30/20 span all AHB SRAM
* banks but are treated as two banks of 48 an 16Kb by the NuttX memory
* manager. This gives some symmetry to all of the members of the family.
*/
/* Configuration ************************************************************/
/* Two configurations are supported:
*
* Configuration A:
* Program memory = FLASH
* Data memory = Local RAM Bank 0
* Additional regions = Local RAM Bank 1 + AHB SRAM (exluding DMA buffers)
*
* Configuration B:
* Program memory = Local RAM Bank 0
* Data memory = Local RAM Bank 1
* Additional regions = AHB SRAM (exluding DMA buffers)
*
* This file supports only memory configuration A.
*
* These should be defined in the memory map header file:
*
* LPC43_LOCSRAM_BANK0_BASE 0x10000000
* LPC43_LOCSRAM_BANK1_BASE 0x10080000
* LPC43_AHBSRAM_BANK0_BASE 0x20000000
* LPC43_AHBSRAM_BANK1_BASE 0x20008000
* LPC43_AHBSRAM_BANK2_BASE 0x2000c000
*
* These should be defined for the specific chip in the chip.h header file.
* The value will be defined to be zero in size of the bank does not exist.
* If two banks are contiguous, the combined size will be added to the
* first bank and the size of the second bank will be defined to be zero.
*
* LPC43_LOCSRAM_BANK0_SIZE
* LPC43_LOCSRAM_BANK1_SIZE
* LPC43_AHBSRAM_BANK0_SIZE
* LPC43_AHBSRAM_BANK1_SIZE
* LPC43_AHBSRAM_BANK2_SIZE
*
* The config.h file will define only:
*
* CONFIG_RAM_START = The start of the data RAM region which may be
* either local SRAM bank 0 (Configuration A) or 1 (Configuration B).
* CONFIG_RAM_START = The size of the data RAM region.
* CONFIG_RAM_END = The sum of the above
*/
/* Check for Configuration A. */
#ifndef CONFIG_LPC43_BOOT_SRAM
/* Configuration A */
/* CONFIG_RAM_START should be set to the base of AHB SRAM, local 0. */
# if CONFIG_RAM_START != LPC43_LOCSRAM_BANK0_BASE
# error "CONFIG_RAM_START must be set to the base address of AHB SRAM Bank 0"
# endif
/* The configured RAM size should be equal to the size of local SRAM Bank 0 */
# if CONFIG_RAM_SIZE != LPC43_LOCSRAM_BANK0_SIZE
# error "CONFIG_RAM_SIZE must be set to size of AHB SRAM Bank 0"
# endif
/* Now we can assign all of the memory regions for configuration A */
# define MM_REGION1_BASE LPC43_LOCSRAM_BANK0_BASE
# define MM_REGION1_SIZE LPC43_LOCSRAM_BANK0_SIZE
# define MM_REGION2_BASE LPC43_LOCSRAM_BANK1_BASE
# define MM_REGION2_SIZE LPC43_LOCSRAM_BANK1_SIZE
# define MM_REGION3_BASE LPC43_AHBSRAM_BANK0_BASE
# define MM_REGION3_SIZE LPC43_AHBSRAM_BANK0_SIZE
#else
/* Configuration B */
/* CONFIG_RAM_START should be set to the base of local SRAM, bank 1. */
# if CONFIG_RAM_START != LPC43_LOCSRAM_BANK1_BASE
# error "CONFIG_RAM_START must be set to the base address of AHB SRAM Bank 0"
# endif
/* The configured RAM size should be equal to the size of local SRAM Bank 1 */
# if CONFIG_RAM_SIZE != LPC43_LOCSRAM_BANK1_SIZE
# error "CONFIG_RAM_SIZE must be set to size of AHB SRAM Bank 0"
# endif
/* Now we can assign all of the memory regions for configuration B */
# define MM_REGION1_BASE LPC43_LOCSRAM_BANK1_BASE
# define MM_REGION1_SIZE LPC43_LOCSRAM_BANK1_SIZE
# define MM_REGION2_BASE LPC43_AHBSRAM_BANK0_BASE
# define MM_REGION2_SIZE LPC43_AHBSRAM_BANK0_SIZE
# undef MM_REGION3_BASE
# undef MM_REGION3_SIZE
#endif
#define MM_DMAREGION_BASE LPC43_AHBSRAM_BANK2_BASE
#define MM_DMAREGION_SIZE LPC43_AHBSRAM_BANK2_SIZE
/* Figure out how much heap we have in the DMA region that is not being
* used by USB and/or Ethernet (if any).
*/
#warning "Missing Logic"
#define MM_DMAHEAP_BASE MM_DMAREGION_BASE /* For now... use it all */
#define MM_DMAHEAP_SIZE MM_DMAREGION_SIZE
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Public Data
****************************************************************************/
/* _sbss is the start of the BSS region (see the linker script) _ebss is the
* end of the BSS regsion (see the linker script). The idle task stack starts
* at the end of BSS and is of size CONFIG_IDLETHREAD_STACKSIZE. The IDLE
* thread is the thread that the system boots on and, eventually, becomes the
* idle, do nothing task that runs only when there is nothing else to run.
* The heap continues from there until the configured end of memory.
* g_idle_topstack is the beginning of this heap region (not necessarily aligned).
*/
const uint32_t g_idle_topstack = (uint32_t)&_ebss + CONFIG_IDLETHREAD_STACKSIZE;
/****************************************************************************
* 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_BUILD_PROTECTED=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)
{
/* Start with the first SRAM region */
board_led_on(LED_HEAPALLOCATE);
*heap_start = (FAR void*)g_idle_topstack;
*heap_size = CONFIG_RAM_END - g_idle_topstack;
}
/************************************************************************
* 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)
{
#if CONFIG_MM_REGIONS > 1
/* Add the next SRAM region (which should exist) */
kmm_addregion((FAR void*)MM_REGION2_BASE, MM_REGION2_SIZE);
#ifdef MM_REGION3_BASE
/* Add the third SRAM region (which will not exist in configuration B) */
#if CONFIG_MM_REGIONS > 2
/* Add the third SRAM region (which may not exist) */
kmm_addregion((FAR void*)MM_REGION3_BASE, MM_REGION3_SIZE);
#if CONFIG_MM_REGIONS > 3 && defined(MM_DMAHEAP_BASE)
/* Add the DMA region (which may not be available) */
kmm_addregion((FAR void*)MM_DMAHEAP_BASE, MM_DMAHEAP_SIZE);
#endif /* CONFIG_MM_REGIONS > 3 && defined(MM_DMAHEAP_BASE) */
#endif /* CONFIG_MM_REGIONS > 2 */
#else /* MM_REGION3_BASE */
#if CONFIG_MM_REGIONS > 2 && defined(MM_DMAHEAP_BASE)
/* Add the DMA region (which may not be available) */
kmm_addregion((FAR void*)MM_DMAHEAP_BASE, MM_DMAHEAP_SIZE);
#endif /* CONFIG_MM_REGIONS > 3 && defined(MM_DMAHEAP_BASE) */
#endif /* MM_REGION3_BASE */
#endif /* CONFIG_MM_REGIONS > 1 */
}
#endif
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