Target for making mp2 fsbl header

4ms · Jun 19, 2024 · f16c0b1 · f16c0b1
1 parent 3a8476d
commit f16c0b1
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Showing 2 changed files with 6 additions and 2 deletions.
diff --git a/Makefile b/Makefile
@@ -138,6 +138,10 @@ image: $(BIN)
 	python3 fsbl_header.py $(BUILDDIR)/$(BINARYNAME).bin $(BUILDDIR)/$(BINARYNAME).stm32
 	@ls -l $(BUILDDIR)/$(BINARYNAME).stm32
 
+image-mp2: $(BIN)
+	python3 fsbl_header.py --format=mp2 $(BUILDDIR)/$(BINARYNAME).bin $(BUILDDIR)/$(BINARYNAME).stm32
+	@ls -l $(BUILDDIR)/$(BINARYNAME).stm32
+
 load: image
 	@read -p "What is the disk device (Enter for $(SD_DISK_DEV)): " DISK && \
 	DISK=$${DISK:-$(SD_DISK_DEV)} && \

diff --git a/fsbl_header.py b/fsbl_header.py
@@ -11,14 +11,14 @@ def add_mp2_fsbl_header(binary_file):
 
     payload = bytearray(binary_file[0x100:])
 
-    header = struct.pack("<ccccQQQQQQQQIIIIQQQIIII8xII",
+    header = struct.pack("<ccccQQQQQQQQIIIIIIIIIII8xII",
         bytes('S', "ascii"), bytes('T', "ascii"), bytes('M', "ascii"), bytes('2', "ascii"), # Header magic
         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,                                     # ECDSA signature (512bits=64Bytes=8 quads), unsigned here
         sum(payload),                                                                       # Checksum of payload, sum of all bytes
         0x00020200,                                                                         # Header version 1.0
         len(payload),                                                                       # Length of payload
         0x2FFC0000 + 0x2400 + 0x100,                                                        # Entrypoint address. ????
-        0x00000000, 0x00000000, 0x00000000,                                                 # Reserved (96 bits = 3 quads)
+        0x00, 0x00, 0x00,                                                                   # Reserved (96 bits = 3 quads)
         0x00000000,                                                                         # Image version (32bits)
         0x00000000,                                                                         # Option flags (32bits) , header padding disabled, auth disabled, decrypt disabled
         0x00000000,                                                                         # Header extension lengths (32bits)