Example for FIPS Linker Descriptor to explicitly set wolfCrypt FIPS boundaries.

IDE/GCC-ARM/include.am

@@ -9,6 +9,7 @@ EXTRA_DIST+= IDE/GCC-ARM/Source/benchmark_main.c
 EXTRA_DIST+= IDE/GCC-ARM/Source/test_main.c
 EXTRA_DIST+= IDE/GCC-ARM/Source/tls_client.c
 EXTRA_DIST+= IDE/GCC-ARM/linker.ld
+EXTRA_DIST+= IDE/GCC-ARM/linker_fips.ld
 EXTRA_DIST+= IDE/GCC-ARM/Makefile
 EXTRA_DIST+= IDE/GCC-ARM/Makefile.bench
 EXTRA_DIST+= IDE/GCC-ARM/Makefile.client

IDE/GCC-ARM/linker_fips.ld

@@ -0,0 +1,92 @@
+MEMORY
+{
+  FLASH (wx) : ORIGIN = 0x00000000, LENGTH = 256K
+  RAM   (wx) : ORIGIN = 0x20000000, LENGTH = 64K
+}
+
+SECTIONS
+{
+    __vectors_start__ = .;
+    .vectors : { *(.vectors) } > FLASH
+    __vectors_end__ = __vectors_start__ + 0x400;
+
+    /* Custom section for wolfCrypt FIPS module */
+    .wolfCryptFIPSModule_text :
+    {
+        . = ALIGN(4);
+        KEEP(wolfcrypt_first.o (.text .text* ))
+        KEEP(aes.o(.text .text* ))
+        KEEP(cmac.o (.text .text* ))
+        KEEP(des3.o (.text .text* ))
+        KEEP(dh.o (.text .text* ))
+        KEEP(ecc.o (.text .text* ))
+        KEEP(fips.o (.text .text* ))
+        KEEP(fips_test.o (.text .text* ))
+        KEEP(hmac.o (.text .text* ))
+        KEEP(random.o(.text .text* ))
+        KEEP(rsa.o (.text .text* ))
+        KEEP(sha.o (.text .text* ))
+        KEEP(sha256.o (.text .text* ))
+        KEEP(sha3.o (.text .text* ))
+        KEEP(sha512.o (.text .text* ))
+        KEEP(wolfcrypt_last.o(.text .text*))
+        . = ALIGN(4);
+    } > FLASH
+    .wolfCryptFIPSModule_rodata :
+    {
+        . = ALIGN(4);
+        KEEP(wolfcrypt_first.o (.rodata .rodata*))
+        KEEP(aes.o(.rodata .rodata*))
+        KEEP(cmac.o(.rodata .rodata*))
+        KEEP(des3.o(.rodata .rodata*))
+        KEEP(dh.o(.rodata .rodata*))
+        KEEP(ecc.o(.rodata .rodata*))
+        KEEP(fips.o(.rodata .rodata*))
+        KEEP(fips_test.o(.rodata .rodata*))
+        KEEP(hmac.o(.rodata .rodata*))
+        KEEP(random.o(.rodata .rodata*))
+        KEEP(rsa.o(.rodata .rodata*))
+        KEEP(sha.o(.rodata .rodata*))
+        KEEP(sha256.o(.rodata .rodata*))
+        KEEP(sha3.o(.rodata .rodata*))
+        KEEP(sha512.o(.rodata .rodata*))
+        KEEP(wolfcrypt_last.o(.rodata .rodata*))
+        . = ALIGN(4);
+    } > FLASH
+
+    /* Custom section for wolfCrypt and LibC to prevent FIPS hash from changing 
+        when application code changes are made */
+    .wolfCryptNonFIPS_text :
+    {
+        . = ALIGN(4);
+        KEEP(*wolf*src*.o(.text .text*))
+        lib_a* ( .text .text*)
+        . = ALIGN(4);
+    } > FLASH
+    .wolfCryptNonFIPS_rodata :
+    {
+        . = ALIGN(4);
+        KEEP(*wolf*src*.o(.rodata .rodata*))
+        lib_a* (.rodata .rodata*)
+        . = ALIGN(4);
+    } > FLASH
+    
+	.sys    : { *(.sys*) }    > FLASH
+    .text   : { *(.text*) }   > FLASH
+    .rodata : { *(.text*) }   > FLASH
+
+	__data_load_start__ = .;
+    __data_start__ = .;
+    .data   : { *(.data*) }   > RAM
+    __data_end__ = __data_start__ + SIZEOF(.data);
+
+    __bss_start__ = .;
+    .bss    : { *(.bss*)  }   > RAM
+    __bss_end__   = __bss_start__ + SIZEOF(.bss);
+
+    __heap_start__ = .;
+    .heap   : { *(.heap*)  }   > RAM
+    __heap_end__ = __heap_start__ + SIZEOF(.heap);
+
+    end = .;
+}