bsp/stm32f74x: Fix RAM and DTCM description

hw/bsp/nucleo-f746zg/link/include/memory_regions.ld.h

@@ -22,7 +22,7 @@
 
 #ifdef STACK_REGION
     DTCM (rwx) :  ORIGIN = 0x20000000, LENGTH = (64K - STACK_SIZE)
-    STACK_RAM (rw) : ORIGIN = 0x20020000 - STACK_SIZE, LENGTH = STACK_SIZE
+    STACK_RAM (rw) : ORIGIN = 0x20010000 - STACK_SIZE, LENGTH = STACK_SIZE
 #else
     DTCM (rwx) :  ORIGIN = 0x20000000, LENGTH = 64K
 #endif

hw/bsp/nucleo-f746zg/syscfg.yml

@@ -27,7 +27,7 @@ syscfg.defs:
         value: 8
 
 syscfg.vals:
-    MCU_RAM_START: 0x20020000
+    MCU_RAM_START: 0x20010000
     MCU_RAM_SIZE: 240K
     REBOOT_LOG_FLASH_AREA: FLASH_AREA_REBOOT_LOG
     CONFIG_FCB_FLASH_AREA: FLASH_AREA_NFFS

hw/bsp/stm32f7discovery/link/include/mcu_config.ld.h

@@ -0,0 +1,37 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+/*
+ * Memory regions placed in DTCM
+ * If stack or core data or other section should be place in RAM
+ * <target_name>/link/include/target_config.ld.h should just do:
+ *  #undef BSSNZ_RAM
+ *  #undef COREBSS_RAM
+ *  #undef COREDATA_RAM
+ *  #undef STACK_REGION
+ *  #undef VECTOR_RELOCATION_RAM DTCM
+ */
+
+#define BSSNZ_RAM DTCM
+#define COREBSS_RAM DTCM
+#define COREDATA_RAM DTCM
+#define STACK_REGION DTCM
+#define VECTOR_RELOCATION_RAM DTCM
+
+#define TEXT_RAM ITCM

hw/bsp/stm32f7discovery/link/include/memory_regions.ld.h

@@ -0,0 +1,38 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+/* Fragment that goes to MEMORY section */
+#ifndef SECTIONS_REGIONS
+
+#ifdef STACK_REGION
+    DTCM (rwx) :  ORIGIN = 0x20000000, LENGTH = (64K - STACK_SIZE)
+    STACK_RAM (rw) : ORIGIN = 0x20010000 - STACK_SIZE, LENGTH = STACK_SIZE
+#else
+    DTCM (rwx) :  ORIGIN = 0x20000000, LENGTH = 64K
+#endif
+    ITCM (rx)  :  ORIGIN = 0x00000000, LENGTH = 16K
+
+#else
+/* Fragment that goes into SECTIONS, can provide definition and sections if needed */
+    _itcm_start = ORIGIN(ITCM);
+    _itcm_end = ORIGIN(ITCM) + LENGTH(ITCM);
+    _dtcm_start = ORIGIN(DTCM);
+    _dtcm_end = ORIGIN(DTCM) + LENGTH(DTCM);
+
+#endif

hw/bsp/stm32f7discovery/syscfg.yml

@@ -27,7 +27,7 @@ syscfg.defs:
         value: 8
 
 syscfg.vals:
-    MCU_RAM_START: 0x20020000
+    MCU_RAM_START: 0x20010000
     MCU_RAM_SIZE: 240K
     REBOOT_LOG_FLASH_AREA: FLASH_AREA_REBOOT_LOG
     CONFIG_FCB_FLASH_AREA: FLASH_AREA_NFFS