nrf: allow target.mbed_ram_start and target.mbed_ram_size to override settings in linker

Author: pi-anl

targets/TARGET_NORDIC/TARGET_NRF5x/TARGET_NRF52/TARGET_MCU_NRF52832/device/TOOLCHAIN_ARM_STD/nRF52832.sct

@@ -10,12 +10,14 @@
 #endif
 
 /* If softdevice is present, set aside space for it */
-#if defined(SOFTDEVICE_PRESENT)
-  #define MBED_RAM_START  0x200031D0
-  #define MBED_RAM_SIZE   0xCE30
-#else
-  #define MBED_RAM_START  0x20000000
-  #define MBED_RAM_SIZE   0x10000
+#if !defined(MBED_RAM_START)
+  #if defined(SOFTDEVICE_PRESENT)
+    #define MBED_RAM_START  0x200031D0
+    #define MBED_RAM_SIZE   0xCE30
+  #else
+    #define MBED_RAM_START  0x20000000
+    #define MBED_RAM_SIZE   0x10000
+  #endif
 #endif
 
 #define MBED_RAM0_START MBED_RAM_START

targets/TARGET_NORDIC/TARGET_NRF5x/TARGET_NRF52/TARGET_MCU_NRF52832/device/TOOLCHAIN_GCC_ARM/NRF52832.ld

@@ -26,12 +26,14 @@
 #endif
 
 /* If softdevice is present, set aside space for it */
-#if defined(SOFTDEVICE_PRESENT)
-  #define MBED_RAM_START  0x200031D0
-  #define MBED_RAM_SIZE   0xCE30
-#else
-  #define MBED_RAM_START  0x20000000
-  #define MBED_RAM_SIZE   0x10000
+#if !defined(MBED_RAM_START)
+  #if defined(SOFTDEVICE_PRESENT)
+    #define MBED_RAM_START  0x200031D0
+    #define MBED_RAM_SIZE   0xCE30
+  #else
+    #define MBED_RAM_START  0x20000000
+    #define MBED_RAM_SIZE   0x10000
+  #endif
 #endif
 
 #define MBED_RAM0_START MBED_RAM_START
@@ -189,7 +191,7 @@ SECTIONS
         PROVIDE(__start_fs_data = .);
         KEEP(*(.fs_data))
         PROVIDE(__stop_fs_data = .);
-        
+
         *(.jcr)
         . = ALIGN(4);
         /* All data end */

targets/TARGET_NORDIC/TARGET_NRF5x/TARGET_NRF52/TARGET_MCU_NRF52832/device/TOOLCHAIN_IAR/nRF52832.icf

@@ -12,12 +12,14 @@ if (!isdefinedsymbol(MBED_APP_SIZE)) {
 }
 
 /* If softdevice is present, set aside space for it */
-if (isdefinedsymbol(SOFTDEVICE_PRESENT)) {
-  define symbol MBED_RAM_START = 0x200031D0;
-  define symbol MBED_RAM_SIZE  = 0xCE30;
-} else {
-  define symbol MBED_RAM_START = 0x20000000;
-  define symbol MBED_RAM_SIZE  = 0x10000;
+if (!isdefinedsymbol(MBED_RAM_START)) {
+  if (isdefinedsymbol(SOFTDEVICE_PRESENT)) {
+    define symbol MBED_RAM_START = 0x200031D0;
+    define symbol MBED_RAM_SIZE  = 0xCE30;
+  } else {
+    define symbol MBED_RAM_START = 0x20000000;
+    define symbol MBED_RAM_SIZE  = 0x10000;
+  }
 }
 
 define symbol MBED_RAM0_START = MBED_RAM_START;

targets/TARGET_NORDIC/TARGET_NRF5x/TARGET_NRF52/TARGET_MCU_NRF52840/device/TOOLCHAIN_ARM_STD/nRF52840.sct

@@ -9,13 +9,15 @@
   #define MBED_APP_SIZE 0x100000
 #endif
 
-/* If app_start is 0, do not set aside space for the softdevice */
-#if MBED_APP_START == 0
-  #define MBED_RAM_START  0x20000000
-  #define MBED_RAM_SIZE   0x40000
-#else
-  #define MBED_RAM_START  0x20003188
-  #define MBED_RAM_SIZE   0x3CE78
+/* If softdevice is present, set aside space for it */
+#if !defined(MBED_RAM_START)
+  #if defined(SOFTDEVICE_PRESENT)
+    #define MBED_RAM_START  0x20003188
+    #define MBED_RAM_SIZE   0x3CE78
+  #else
+    #define MBED_RAM_START  0x20000000
+    #define MBED_RAM_SIZE   0x40000
+  #endif
 #endif
 
 #define MBED_RAM0_START MBED_RAM_START

targets/TARGET_NORDIC/TARGET_NRF5x/TARGET_NRF52/TARGET_MCU_NRF52840/device/TOOLCHAIN_GCC_ARM/NRF52840.ld

@@ -25,13 +25,15 @@
   #define MBED_APP_SIZE 0x100000
 #endif
 
-/* If app_start is 0, do not set aside space for the softdevice */
-#if MBED_APP_START == 0
-  #define MBED_RAM_START  0x20000000
-  #define MBED_RAM_SIZE   0x40000
-#else
-  #define MBED_RAM_START  0x20003188
-  #define MBED_RAM_SIZE   0x3CE78
+/* If softdevice is present, set aside space for it */
+#if !defined(MBED_RAM_START)
+  #if defined(SOFTDEVICE_PRESENT)
+    #define MBED_RAM_START  0x20003188
+    #define MBED_RAM_SIZE   0x3CE78
+  #else
+    #define MBED_RAM_START  0x20000000
+    #define MBED_RAM_SIZE   0x40000
+  #endif
 #endif
 
 #define MBED_RAM0_START MBED_RAM_START

targets/TARGET_NORDIC/TARGET_NRF5x/TARGET_NRF52/TARGET_MCU_NRF52840/device/TOOLCHAIN_IAR/nRF52840.icf

@@ -11,13 +11,15 @@ if (!isdefinedsymbol(MBED_APP_SIZE)) {
     define symbol MBED_APP_SIZE = 0x100000;
 }
 
-/* If app_start is 0, do not set aside space for the softdevice */
-if (MBED_APP_START == 0) {
-  define symbol MBED_RAM_START = 0x20000000;
-  define symbol MBED_RAM_SIZE  = 0x40000;
-} else {
-  define symbol MBED_RAM_START = 0x20003188;
-  define symbol MBED_RAM_SIZE  = 0x3CE78;
+/* If softdevice is present, set aside space for it */
+if (!isdefinedsymbol(MBED_RAM_START)) {
+  if (isdefinedsymbol(SOFTDEVICE_PRESENT)) {
+    define symbol MBED_RAM_START = 0x20003188;
+    define symbol MBED_RAM_SIZE  = 0x3CE78;
+  } else {
+    define symbol MBED_RAM_START = 0x20000000;
+    define symbol MBED_RAM_SIZE  = 0x40000;
+  }
 }
 
 define symbol MBED_RAM0_START = MBED_RAM_START;