Finish code for basic STM3240 port

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4124 42af7a65-404d-4744-a932-0658087f49c3

1 files changed, 161 insertions, 0 deletions

diff --git a/nuttx/arch/arm/src/stm32/stm32_allocateheap.c b/nuttx/arch/arm/src/stm32/stm32_allocateheap.c
new file mode 100644
index 000000000..576db4047
--- /dev/null
+++ b/nuttx/arch/arm/src/stm32/stm32_allocateheap.c
@@ -0,0 +1,161 @@
+/****************************************************************************
+ * arch/arm/src/stm32/up_allocateheap.c
+ *
+ *   Copyright (C) 2011 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 <arch/board/board.h>
+
+#include "chip.h"
+#include "up_arch.h"
+#include "up_internal.h"
+
+/****************************************************************************
+ * Private Definitions
+ ****************************************************************************/
+
+/* For the STM312F10xxx family, all SRAM is in a contiguous block starting
+ * at g_heapbase and extending through CONFIG_DRAM_END (my apologies for
+ * the bad naming).
+ */
+
+#if defined(CONFIG_STM32_STM32F10XX)
+#  define SRAM1_END CONFIG_DRAM_END
+
+/* All members of the STM32F40xxx family have 192Kb in three banks:
+ *
+ * 1) 112Kb of SRAM beginning at address 0x2000:0000
+ * 2)  16Kb of SRAM beginning at address 0x2001:c000
+ * 3)  64Kb of TCM SRAM beginning at address 0x1000:0000
+ *
+ * As determined by ld.script, g_heapbase lies in the 112Kb memory
+ * region and that extends to 0x2001:0000.  But the  first and second memory
+ * regions are contiguous and treated as one in this logic that extends to
+ * 0x2002:0000.
+ */
+
+#elif defined(CONFIG_STM32_STM32F40XX)
+#  define SRAM1_END   0x20020000
+#  define SRAM2_START 0x10000000
+#  define SRAM2_END   0x10010000
+#else
+#  error "Unsupported STM32 chip"
+#endif
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: up_allocate_heap
+ *
+ * Description:
+ *   The heap may be statically allocated by
+ *   defining CONFIG_HEAP_BASE and CONFIG_HEAP_SIZE.  If these
+ *   are not defined, then this function will be called to
+ *   dynamically set aside the heap region.
+ *
+ ****************************************************************************/
+
+void up_allocate_heap(FAR void **heap_start, size_t *heap_size)
+{
+  up_ledon(LED_HEAPALLOCATE);
+  *heap_start = (FAR void*)g_heapbase;
+  *heap_size  = SRAM1_END - g_heapbase;
+}
+
+/****************************************************************************
+ * 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
+#  if defined(CONFIG_STM32_STM32F40XX)
+#    if defined(CONFIG_HEAP2_BASE) && defined(CONFIG_HEAP2_END)
+#      if CONFIG_MM_REGIONS > 3
+#        error "CONFIG_MM_REGIONS > 3 but I don't know what all of the regions are"
+#      endif
+#    elif CONFIG_MM_REGIONS > 2
+#      error "CONFIG_MM_REGIONS > 2 but I don't know what all of the regions are"
+#    endif
+
+void up_addregion(void)
+{
+  /* Add the STM32F40xxx TCM SRAM heap region. */
+
+   mm_addregion((FAR void*)SRAM2_START, SRAM2_END-SRAM2_START);
+
+   /* Add the user specified heap region. */
+
+#  if CONFIG_MM_REGIONS > 2 && defined(CONFIG_HEAP2_BASE) && defined(CONFIG_HEAP2_END)
+   mm_addregion((FAR void*)CONFIG_HEAP2_BASE, CONFIG_HEAP2_END - CONFIG_HEAP2_BASE);
+#  endif
+}
+
+#  elif defined(CONFIG_HEAP2_BASE) && defined(CONFIG_HEAP2_END)
+#    if CONFIG_MM_REGIONS > 2
+#      error "CONFIG_MM_REGIONS > 2 but I don't know what all of the regions are"
+#    endif
+
+void up_addregion(void)
+{
+  /* Add the user specified heap region. */
+
+  mm_addregion((FAR void*)CONFIG_HEAP2_BASE, CONFIG_HEAP2_END - CONFIG_HEAP2_BASE);
+}
+
+#  else
+#    error "CONFIG_MM_REGIONS > 1 but I don't know what any of the region(s) are"
+#  endif
+#endif