53 def get_recovery_dtbo_offset(args):  argument
56     num_kernel_pages = get_number_of_pages(filesize(args.kernel), args.pagesize)
57     num_ramdisk_pages = get_number_of_pages(filesize(args.ramdisk), args.pagesize)
58     num_second_pages = get_number_of_pages(filesize(args.second), args.pagesize)
59     dtbo_offset = args.pagesize * (num_header_pages + num_kernel_pages +
64 def write_header(args):  argument
69     if (args.header_version > 2):
70         raise ValueError('Boot header version %d not supported' % args.header_version)
72     args.output.write(pack('8s', BOOT_MAGIC))
73     final_ramdisk_offset = (args.base + args.ramdisk_offset) if filesize(args.ramdisk) > 0 else 0
74     final_second_offset = (args.base + args.second_offset) if filesize(args.second) > 0 else 0
75     args.output.write(pack('10I',
76         filesize(args.kernel),                          # size in bytes
77         args.base + args.kernel_offset,                 # physical load addr
78         filesize(args.ramdisk),                         # size in bytes
80         filesize(args.second),                          # size in bytes
82         args.base + args.tags_offset,                   # physical addr for kernel tags
83         args.pagesize,                                  # flash page size we assume
84         args.header_version,                            # version of bootimage header
85         (args.os_version << 11) | args.os_patch_level)) # os version and patch level
86     args.output.write(pack('16s', args.board.encode())) # asciiz product name
87     args.output.write(pack('512s', args.cmdline[:512].encode()))
90     update_sha(sha, args.kernel)
91     update_sha(sha, args.ramdisk)
92     update_sha(sha, args.second)
94     if args.header_version > 0:
95         update_sha(sha, args.recovery_dtbo)
96     if args.header_version > 1:
97         update_sha(sha, args.dtb)
101     args.output.write(img_id)
102     args.output.write(pack('1024s', args.cmdline[512:].encode()))
104     if args.header_version > 0:
105         args.output.write(pack('I', filesize(args.recovery_dtbo)))   # size in bytes
106         if args.recovery_dtbo:
107             args.output.write(pack('Q', get_recovery_dtbo_offset(args))) # recovery dtbo offset
109             args.output.write(pack('Q', 0)) # Will be set to 0 for devices without a recovery dtbo
112     if args.header_version == 1:
113         args.output.write(pack('I', BOOT_IMAGE_HEADER_V1_SIZE))
114     elif args.header_version == 2:
115         args.output.write(pack('I', BOOT_IMAGE_HEADER_V2_SIZE))
117     if args.header_version > 1:
118         args.output.write(pack('I', filesize(args.dtb)))   # size in bytes
119         args.output.write(pack('Q', args.base + args.dtb_offset)) # dtb physical load address
120     pad_file(args.output, args.pagesize)
213 def write_data(args):  argument
214     write_padded_file(args.output, args.kernel, args.pagesize)
215     write_padded_file(args.output, args.ramdisk, args.pagesize)
216     write_padded_file(args.output, args.second, args.pagesize)
218     if args.header_version > 0:
219         write_padded_file(args.output, args.recovery_dtbo, args.pagesize)
220     if args.header_version > 1:
221         write_padded_file(args.output, args.dtb, args.pagesize)
224     args = parse_cmdline()
225     img_id = write_header(args)
226     write_data(args)
227     if args.id: