MLECO-2395: Allow users to select Ethos-U memory mode

Change-Id: Icf09410f12072e8d7850dd1e540c3243af24ed09
diff --git a/scripts/vela/default_vela.ini b/scripts/vela/default_vela.ini
index 884b057..30de99d 100644
--- a/scripts/vela/default_vela.ini
+++ b/scripts/vela/default_vela.ini
@@ -34,6 +34,7 @@
 OffChipFlash_burst_length=128
 OffChipFlash_read_latency=64
 OffChipFlash_write_latency=64
+
 ; Ethos-U65 High-End: SRAM (16 GB/s) and DRAM (3.75 GB/s)
 [System_Config.Ethos_U65_High_End]
 core_clock=1e9
@@ -56,4 +57,12 @@
 const_mem_area=Axi1
 arena_mem_area=Axi0
 cache_mem_area=Axi0
-arena_cache_size=4194304
\ No newline at end of file
+arena_cache_size=4194304
+
+; Dedicated SRAM: the SRAM (384KB) is only for use by the Ethos-U
+; The non-SRAM memory is assumed to be read-writeable
+[Memory_Mode.Dedicated_Sram]
+const_mem_area=Axi1
+arena_mem_area=Axi1
+cache_mem_area=Axi0
+arena_cache_size=393216
\ No newline at end of file