boot/bootutil: Add MCUBOOT_SINGLE_APPLICATION_SLOT_RAM_LOAD mode

Following the split of RAM code, these definitions will help use it with
single slot applications.

Signed-off-by: Ederson de Souza <[email protected]>

Author: edersondisouza

boot/bootutil/include/bootutil/boot_status.h

@@ -128,7 +128,8 @@ enum mcuboot_mode {
     MCUBOOT_MODE_DIRECT_XIP,
     MCUBOOT_MODE_DIRECT_XIP_WITH_REVERT,
     MCUBOOT_MODE_RAM_LOAD,
-    MCUBOOT_MODE_FIRMWARE_LOADER
+    MCUBOOT_MODE_FIRMWARE_LOADER,
+    MCUBOOT_MODE_SINGLE_SLOT_RAM_LOAD,
 };
 
 enum mcuboot_signature_type {

boot/bootutil/src/boot_record.c

@@ -249,6 +249,8 @@ int boot_save_shared_data(const struct image_header *hdr, const struct flash_are
 #else
     uint8_t mode = MCUBOOT_MODE_DIRECT_XIP;
 #endif
+#elif defined(MCUBOOT_SINGLE_APPLICATION_SLOT_RAM_LOAD)
+    uint8_t mode = MCUBOOT_MODE_SINGLE_SLOT_RAM_LOAD;
 #elif defined(MCUBOOT_RAM_LOAD)
     uint8_t mode = MCUBOOT_MODE_RAM_LOAD;
 #elif defined(MCUBOOT_FIRMWARE_LOADER)

boot/bootutil/src/bootutil_misc.c

@@ -334,7 +334,7 @@ boot_write_enc_key(const struct flash_area *fap, uint8_t slot,
 uint32_t bootutil_max_image_size(const struct flash_area *fap)
 {
 #if defined(MCUBOOT_SWAP_USING_SCRATCH) || defined(MCUBOOT_SINGLE_APPLICATION_SLOT) || \
-    defined(MCUBOOT_FIRMWARE_LOADER)
+    defined(MCUBOOT_FIRMWARE_LOADER) || defined(MCUBOOT_SINGLE_APPLICATION_SLOT_RAM_LOAD)
     return boot_status_off(fap);
 #elif defined(MCUBOOT_SWAP_USING_MOVE)
     struct flash_sector sector;