Driver unit tests

Add driver unit tests that runs simple command streams directly
on top of the NPU driver.

Change-Id: I3fcce2a2bfbd458d14186b8fd13ba47174f49562

1 files changed, 53 insertions, 2 deletions

diff --git a/targets/corstone-300/platform.scatter b/targets/corstone-300/platform.scatter
index dc8f57b..fe63d01 100644
--- a/targets/corstone-300/platform.scatter
+++ b/targets/corstone-300/platform.scatter
@@ -18,6 +18,55 @@
  * limitations under the License.
  */
 
+/*
+ * This is a simplified picture of the Corstone-300 memory system.
+ * Please refer to the Corstone SSE-300 Technical Reference Manual for
+ * further information.
+ *
+ * https://developer.arm.com/ip-products/subsystem/corstone/corstone-300
+ *
+ * +---------------+   +---------------+  +------+
+ * | Ethos-U55     |   | Cortex-M55    +--+ ITCM |
+ * |               |   |               |  +------+
+ * |               |   |               |
+ * |               |   |               |  +------+
+ * |  M1      M0   |   |               +--+ DTCM |
+ * +---+-------+---+   +-------+-------+  +------+
+ *     |       |               |
+ *     |   +---+---------------+-----+
+ *     |   | AMBA AXI NIC-400-Lite   |
+ *     |   +---+-----------------+---+
+ *     |       |                 |
+ * +---+-------+------------+ +--+-------+
+ * | AMBA AXI NIC-400       | | SSE-300  |
+ * +---+--------+--------+--+ | SRAM     |
+ *     |        |        |    +----------+
+ * +---+---+ +--+---+ +--+--+
+ * | Flash | | BRAM | | DDR |
+ * +-------+ +------+ +-----+
+ *
+ * +-----------------------+-------------+-------------+----+--------------------------------------+
+ * |  Memory region name   | Base addr   |    Size     |IDAU|  MCC load address + remarks          |
+ * +-----------------------+-------------+-------------+----+--------------------------------------+
+ * | ITCM                  | 0x0000_0000 | 0x0008_0000 | NS | 0x0000_0000; 512 kiB                 |
+ * | ITCM                  | 0x1000_0000 | 0x0008_0000 | S  | Secure alias for NS ITCM             |
+ * | FPGA Data SRAM; BRAM  | 0x0100_0000 | 0x0020_0000 | NS | 0x0100_0000; 2 MiB                   |
+ * | FPGA data SRAM; BRAM  | 0x1100_0000 | 0x0020_0000 | S  | Secure alias for NS BRAM             |
+ * | DTCM                  | 0x2000_0000 | 0x0008_0000 | NS | 512 kiB; 4 banks of 128k each        |
+ * | DTCM                  | 0x3000_0000 | 0x0008_0000 | S  | Secure alias for NS DTCM             |
+ * | SSE-300 internal SRAM | 0x2100_0000 | 0x0040_0000 | NS | 2 banks of 2 MiB each; 3cc latency)  |
+ * | SSE-300 internal SRAM | 0x3100_0000 | 0x0040_0000 | S  | Secure alias for NS internal SRAM    |
+ * | DDR                   | 0x6000_0000 | 0x1000_0000 | NS | 0x0800_0000; 256 MiB bank            |
+ * | DDR                   | 0x7000_0000 | 0x1000_0000 | S  | 0x0C00_0000; 256 MiB bank            |
+ * +-----------------------+-------------+-------------+----+--------------------------------------+
+ *
+ *  Note: Ethos-U55 can access BRAM, internal SRAM and the DDR sections => activation buffers and
+ *        the model should only be placed in those regions.
+ *
+ *  Note: Alias regions means that secure and non-secure addresses are mapped to the same physical
+ *        memory banks.
+ */
+
 #ifndef STACK_SIZE
 #define STACK_SIZE 0x8000
 #endif
@@ -85,8 +134,9 @@ APP_IMAGE LR_START LR_SIZE
 #if defined(USE_TRUSTZONE) && defined(TRUSTZONE_SECURE)
     ; MPS3 BRAM
     ; Shared between Cortex-M and the NPU
-    BRAM BRAM_START UNINIT (BRAM_SIZE - TZ_NSC_SIZE)
+    BRAM BRAM_START (BRAM_SIZE - TZ_NSC_SIZE)
     {
+        * (.sram.data)
     }
 
     ROM_NSC TZ_NSC_START TZ_NSC_SIZE
@@ -95,8 +145,9 @@ APP_IMAGE LR_START LR_SIZE
     }
 #else
     ; MPS3 BRAM
-    BRAM BRAM_START UNINIT BRAM_SIZE
+    BRAM BRAM_START BRAM_SIZE
     {
+        * (.sram.data)
     }
 #endif