px4 fmu-v6x:Add remaining SRAM4 & DTCM to heap

Author: davids5

boards/px4/fmu-v6x/nuttx-config/nsh/defconfig

@@ -96,6 +96,7 @@ CONFIG_MEMSET_OPTSPEED=y
 CONFIG_MMCSD=y
 CONFIG_MMCSD_SDIO=y
 CONFIG_MMCSD_SDIOWAIT_WRCOMPLETE=y
+CONFIG_MM_REGIONS=4
 CONFIG_MTD=y
 CONFIG_MTD_BYTE_WRITE=y
 CONFIG_MTD_PARTITION=y
@@ -191,8 +192,6 @@ CONFIG_STM32H7_BKPSRAM=y
 CONFIG_STM32H7_DMA1=y
 CONFIG_STM32H7_DMA2=y
 CONFIG_STM32H7_DMACAPABLE=y
-CONFIG_STM32H7_DTCMEXCLUDE=y
-CONFIG_STM32H7_DTCM_PROCFS=y
 CONFIG_STM32H7_ETHMAC=y
 CONFIG_STM32H7_FLASH_OVERRIDE_I=y
 CONFIG_STM32H7_FLOWCONTROL_BROKEN=y

boards/px4/fmu-v6x/nuttx-config/scripts/script.ld

@@ -200,8 +200,11 @@ SECTIONS
 
 	/* Emit the the D3 power domain section for locating BDMA data */
 
-	.sram4 (NOLOAD) :
+	.sram4_reserve (NOLOAD) :
 	{
+		*(.sram4)
+		. = ALIGN(4);
+		_sram4_heap_start = ABSOLUTE(.);
 	} > sram4
 
 	/* Stabs debugging sections. */