[SAMA5D3] Add build test, expand Target.md

Author: danielinux

.github/workflows/test-configs.yml

@@ -22,6 +22,13 @@ jobs:
   #     arch: riscv
   #     config-file: ./config/examples/hifive.config
   #
+  #
+  sama5d3_test:
+    uses: ./.github/workflows/test-build.yml
+    with:
+      arch: arm
+      config-file: ./config/examples/sama5d3.config
+
   same51_test:
     uses: ./.github/workflows/test-build.yml
     with:

config/examples/sama5d3-sram.config

@@ -1447,8 +1447,17 @@ Step 3: program `wolfboot.bin` to the beginning of the flash:
 
 ### Programming the test application into NAND flash
 
-(TODO)
+The application can be written to a second partition in nand,
+e.g. at address "0x40000"
 
+`sam-ba -p j-link -b sama5d3-xplained -t 5 -a nandflash -c write:test-app/image_v1_signed.bin:0x400000`
+
+With the example configuration, wolfBoot will evaluate two alternative images
+at addresses 0x400000 and 0x800000, authenticate, load to DRAM and stage from
+`LOAD_ADDRESS`.
+
+Ensure that the application is compiled to run from `LOAD_ADDRESS`.
+Check `test-app/ARM-sama5d3.ld` for details.
 
 
 ## Microchip SAME51