diff --git a/radio/src/boards/generic_stm32/linker/common_sections.ld b/radio/src/boards/generic_stm32/linker/common_sections.ld
index 63adae8c6..73cd9e886 100644
--- a/radio/src/boards/generic_stm32/linker/common_sections.ld
+++ b/radio/src/boards/generic_stm32/linker/common_sections.ld
@@ -1,11 +1,11 @@
 
 /* C/C++ Exception handling (not used) */
-.ARM.extab :
+.ARM.extab (READONLY) :
 {
   *(.ARM.extab* .gnu.linkonce.armextab.*)
 } > REGION_TEXT AT> REGION_TEXT_STORAGE
 
-.ARM :
+.ARM (READONLY) :
 {
   PROVIDE(__exidx_start = .);
   *(.ARM.exidx* .gnu.linkonce.armexidx.*)
@@ -13,7 +13,7 @@
 } > REGION_TEXT AT> REGION_TEXT_STORAGE
 
 /* Bootstrap code to load ISR vector and code sections */
-.bootstrap :
+.bootstrap (READONLY) :
 {
   *(.bootstrap)
 } > REGION_TEXT_STORAGE
@@ -32,7 +32,7 @@
 _sidata = LOADADDR(.data);
 
 /* Uninitialized data section */
-.bss(NOLOAD) : AT (ADDR(.bss))
+.bss (NOLOAD) : AT (ADDR(.bss))
 {
   . = ALIGN(4);
   /* This is used by the startup in order to initialize the .bss secion */
diff --git a/radio/src/boards/generic_stm32/linker/firmware.ld b/radio/src/boards/generic_stm32/linker/firmware.ld
index 41f7f43ce..74ef8cf0d 100644
--- a/radio/src/boards/generic_stm32/linker/firmware.ld
+++ b/radio/src/boards/generic_stm32/linker/firmware.ld
@@ -15,7 +15,7 @@ SECTIONS
   } > REGION_BOOTLOADER
 
   /* Used only with H7 */
-  .firmware_header :
+  .firmware_header (READONLY) :
   {
     KEEP(*(.fwdescription))
   } > REGION_TEXT AT> REGION_TEXT_STORAGE
@@ -34,7 +34,7 @@ SECTIONS
   _isr_load = LOADADDR(.isr_vector);
 
   /* Main code section */
-  .text :
+  .text (READONLY) :
   {
     FILL(0xFFFF)
     CREATE_OBJECT_SYMBOLS
diff --git a/radio/src/boards/generic_stm32/linker/stm32h750_sdram/bootloader/layout.ld b/radio/src/boards/generic_stm32/linker/stm32h750_sdram/bootloader/layout.ld
index 5a951ede4..a22051763 100644
--- a/radio/src/boards/generic_stm32/linker/stm32h750_sdram/bootloader/layout.ld
+++ b/radio/src/boards/generic_stm32/linker/stm32h750_sdram/bootloader/layout.ld
@@ -1,6 +1,6 @@
 /* SDRAM definitions */
-SDRAM_START = DEFINED(__SDRAM_START__) ? __SDRAM_START__ : 0xC0000000;
-SDRAM_SIZE = DEFINED(__SDRAM_SIZE__) ? __SDRAM_SIZE__ : 8192K;
+SDRAM_START = DEFINED(__sdram_start) ? __sdram_start : 0xC0000000;
+SDRAM_SIZE = DEFINED(__sdram_size) ? __sdram_size : 8192K;
 
 /* Highest heap address */
 HEAP_ADDRESS = SDRAM_START + SDRAM_SIZE;
@@ -9,7 +9,7 @@ HEAP_ADDRESS = SDRAM_START + SDRAM_SIZE;
 STACK_ADDRESS = ORIGIN(DTCMRAM) + LENGTH(DTCMRAM) - 16;    /* end of RAM */
 
 /* Maximum bootloader code size */
-BOOTLOADER_SIZE = 0x20000;
+BOOTLOADER_SIZE = 0x10000;
 
 /* Required amount of stack for interrupt stack (Main stack) */
 MAIN_STACK_SIZE = 8192;
@@ -30,7 +30,8 @@ MEMORY
 }
 
 REGION_ALIAS("REGION_TEXT_STORAGE", FLASH);
-REGION_ALIAS("REGION_TEXT", FLASH);
-REGION_ALIAS("REGION_DATA", DTCMRAM);
-REGION_ALIAS("REGION_BSS", RAM_D1);
-REGION_ALIAS("REGION_RAM", RAM_D1);
+REGION_ALIAS("REGION_TEXT",         ITCMRAM);
+REGION_ALIAS("REGION_ISR_VECT",     DTCMRAM);
+REGION_ALIAS("REGION_DATA",         DTCMRAM);
+REGION_ALIAS("REGION_BSS",          RAM_D1);
+REGION_ALIAS("REGION_RAM",          RAM_D1);
diff --git a/radio/src/boards/generic_stm32/linker/stm32h750_sdram/layout.ld b/radio/src/boards/generic_stm32/linker/stm32h750_sdram/layout.ld
index 1a635aad1..7f9454016 100644
--- a/radio/src/boards/generic_stm32/linker/stm32h750_sdram/layout.ld
+++ b/radio/src/boards/generic_stm32/linker/stm32h750_sdram/layout.ld
@@ -1,6 +1,6 @@
 /* SDRAM definitions */
-SDRAM_START = DEFINED(__SDRAM_START__) ? __SDRAM_START__ : 0xC0000000;
-SDRAM_SIZE = DEFINED(__SDRAM_SIZE__) ? __SDRAM_SIZE__ : 8192K;
+SDRAM_START = DEFINED(__sdram_start) ? __sdram_start : 0xC0000000;
+SDRAM_SIZE = DEFINED(__sdram_size) ? __sdram_size : 8192K;
 
 /* Highest heap address */
 HEAP_ADDRESS = SDRAM_START + SDRAM_SIZE;
@@ -9,14 +9,13 @@ HEAP_ADDRESS = SDRAM_START + SDRAM_SIZE;
 STACK_ADDRESS = ORIGIN(DTCMRAM) + LENGTH(DTCMRAM);    /* end of RAM */
 
 /* Maximum bootloader code size */
-BOOTLOADER_SIZE = 0x20000;
+BOOTLOADER_SIZE = 0x10000;
 
 /* Required amount of stack for interrupt stack (Main stack) */
 MAIN_STACK_SIZE = 8192;
 
 /* Generate a link error if heap and stack don't fit into RAM */
 MIN_HEAP_SIZE = 4096k;      /* required amount of heap  */
-/*_Min_Stack_Size = 0x400; /* required amount of stack */
 
 /* Specify the memory areas */
 MEMORY
@@ -28,13 +27,13 @@ MEMORY
   RAM_D2 (xrw)   : ORIGIN = 0x30000000, LENGTH = 288K
   RAM_D3 (xrw)   : ORIGIN = 0x38000000, LENGTH = 64K
   SDRAM (rwx)    : ORIGIN = SDRAM_START, LENGTH = SDRAM_SIZE
-  QSPIFLASH (rx) : ORIGIN = 0x90000000, LENGTH = 8M
+  NORFLASH (rx)  : ORIGIN = 0x90000000, LENGTH = 8M
 }
 
 REGION_ALIAS("REGION_BOOTLOADER",   FLASH);
-REGION_ALIAS("REGION_ISR_VECT",     DTCMRAM);
-REGION_ALIAS("REGION_TEXT_STORAGE", QSPIFLASH);
+REGION_ALIAS("REGION_TEXT_STORAGE", NORFLASH);
 REGION_ALIAS("REGION_TEXT",         SDRAM);
+REGION_ALIAS("REGION_ISR_VECT",     DTCMRAM);
 REGION_ALIAS("REGION_DATA",         DTCMRAM);
 REGION_ALIAS("REGION_BSS",          RAM_D1);
 REGION_ALIAS("REGION_RAM",          RAM_D1);