zephyr: Wrapped the RAM loading mode in Zephyr configs.
The RAM loading mode wasn't wrapped in Zephyr configs like the other boot modes.
Added a config to enable RAM loading as well as two configs to set
IMAGE_EXECUTABLE_RAM_START and IMAGE_EXECUTABLE_RAM_SIZE, respectively. These
two values default to the values from the chosen node sram in the dts.
Signed-off-by: Johan Öhman <johan.ohman@softube.com>
diff --git a/boot/zephyr/ram_load.conf b/boot/zephyr/ram_load.conf
new file mode 100644
index 0000000..4cca450
--- /dev/null
+++ b/boot/zephyr/ram_load.conf
@@ -0,0 +1,6 @@
+# Enables RAM load mode and specifies 16 MB of memory from 0x80000000
+# as a valid location for the firmware to be loaded into.
+
+CONFIG_BOOT_RAM_LOAD=y
+CONFIG_BOOT_IMAGE_EXECUTABLE_RAM_START=0x80000000
+CONFIG_BOOT_IMAGE_EXECUTABLE_RAM_SIZE=16777216
\ No newline at end of file