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Diffstat (limited to 'util/mtkheader/gen-bl-img.py')
-rwxr-xr-xutil/mtkheader/gen-bl-img.py77
1 files changed, 44 insertions, 33 deletions
diff --git a/util/mtkheader/gen-bl-img.py b/util/mtkheader/gen-bl-img.py
index 361912f637..983923d2b6 100755
--- a/util/mtkheader/gen-bl-img.py
+++ b/util/mtkheader/gen-bl-img.py
@@ -22,57 +22,68 @@ import sys
import hashlib
def read(path):
- with open(path, "rb") as f:
+ with open(path, 'rb') as f:
return f.read()
def write(path, data):
- with open(path, "wb") as f:
+ with open(path, 'wb') as f:
f.write(data)
-def padding(data, size, pattern = '\0'):
+def padding(data, size, pattern='\0'):
return data + pattern * (size - len(data))
-def align(data, size, pattern = '\0'):
+def align(data, size, pattern='\0'):
return padding(data, (len(data) + (size - 1)) & ~(size - 1), pattern)
-gfh_infos = {
- 'mt8173': struct.pack("44I",
- 0x014d4d4d, 0x00000038, 0x454c4946, 0x464e495f,
- 0x0000004f, 0x00000001, 0x01050001, 0x000C0f50,
- 0xffffffff, 0x00020000, 0x000000a8, 0x00000020,
- 0x000000B0, 0x00000001, 0x014d4d4d, 0x0001000c,
- 0x00000001, 0x034d4d4d, 0x00070064, 0x00001182,
- 0x00000000, 0x00000000, 0x00000000, 0x00000000,
- 0x00000000, 0x00000000, 0x00000000, 0x00000000,
- 0x00000000, 0x00000000, 0x00000000, 0x00000000,
- 0x00000000, 0x00000000, 0x00000000, 0x00000000,
- 0x00000000, 0x00000000, 0x00006400, 0x00001388,
- 0x00000000, 0x00000000, 0x00000000, 0x00000000,
- )}
+def gen_gfh_info(chip, data):
+ entries = {
+ 'mt8173': 0x000C1000,
+ 'mt8183': 0x00201000
+ }
+
+ gfh_format = '<44I'
+ gfh_size = struct.calcsize(gfh_format)
+ load_addr = entries[chip] - gfh_size
+ load_size = gfh_size + len(data) + hashlib.sha256().digest_size
+
+ gfh = struct.pack(gfh_format,
+ 0x014d4d4d, 0x00000038, 0x454c4946, 0x464e495f,
+ 0x0000004f, 0x00000001, 0x01050001, load_addr,
+ load_size, 0x00020000, 0x000000a8, 0x00000020,
+ 0x000000B0, 0x00000001, 0x014d4d4d, 0x0001000c,
+ 0x00000001, 0x034d4d4d, 0x00070064, 0x00001182,
+ 0x00000000, 0x00000000, 0x00000000, 0x00000000,
+ 0x00000000, 0x00000000, 0x00000000, 0x00000000,
+ 0x00000000, 0x00000000, 0x00000000, 0x00000000,
+ 0x00000000, 0x00000000, 0x00000000, 0x00000000,
+ 0x00000000, 0x00000000, 0x00006400, 0x00001388,
+ 0x00000000, 0x00000000, 0x00000000, 0x00000000)
+
+ return gfh
def gen_emmc_header(data):
- header = (padding(struct.pack("<12sII", "EMMC_BOOT", 1, 512), 512, '\xff') +
- padding(struct.pack("<8sIIIIIIII", "BRLYT", 1, 2048, 2048 + len(data),
- 0x42424242, 0x00010005, 2048, 2048 + len(data), 1) + '\0' * 140, 512, '\xff') +
+ header = (padding(struct.pack('<12sII', 'EMMC_BOOT', 1, 512), 512, '\xff') +
+ padding(struct.pack('<8sIIIIIIII', 'BRLYT', 1, 2048, 2048 + len(data),
+ 0x42424242, 0x00010005, 2048, 2048 + len(data), 1) + '\0' * 140, 512,
+ '\xff') +
'\0' * 1024)
return header
def gen_sf_header(data):
- header = (padding(struct.pack("<12sII", "SF_BOOT", 1, 512), 512, '\xff') +
- padding(struct.pack("<8sIIIIIIII", "BRLYT", 1, 2048, 2048 + len(data),
- 0x42424242, 0x00010007, 2048, 2048 + len(data), 1) + '\0' * 140, 512, '\xff') +
+ header = (padding(struct.pack('<12sII', 'SF_BOOT', 1, 512), 512, '\xff') +
+ padding(struct.pack('<8sIIIIIIII', 'BRLYT', 1, 2048, 2048 + len(data),
+ 0x42424242, 0x00010007, 2048, 2048 + len(data), 1) + '\0' * 140, 512,
+ '\xff') +
'\0' * 1024)
return header
gen_dev_header = {
- "emmc": gen_emmc_header,
- "sf": gen_sf_header
+ 'emmc': gen_emmc_header,
+ 'sf': gen_sf_header
}
def gen_preloader(chip_ver, flash_type, data):
- gfh_info = gfh_infos[chip_ver]
- gfh_info = gfh_info[0:32] + struct.pack("1I", len(data)+len(gfh_info)+32) + gfh_info[36:len(gfh_info)]
-
+ gfh_info = gen_gfh_info(chip_ver, data)
gfh_hash = hashlib.sha256(gfh_info + data).digest()
data = align(gfh_info + data + gfh_hash, 512, '\xff')
@@ -81,12 +92,12 @@ def gen_preloader(chip_ver, flash_type, data):
def main(argv):
if len(argv) != 5:
- print "Usage: %s <chip> <flash_type> <input_file> <output_file>" % argv[0]
- print "\t flash_type: emmc/sf"
- print "\t chip : mt8173"
+ print 'Usage: %s <chip> <flash_type> <input_file> <output_file>' % argv[0]
+ print '\t flash_type: emmc|sf'
+ print '\t chip : mt8173|mt8183'
exit(1)
write(argv[4], gen_preloader(argv[1], argv[2], read(argv[3])))
-if __name__ == "__main__":
+if __name__ == '__main__':
main(sys.argv)