76723874a7
TEST=Build Pass. BUG=b:317009620 Change-Id: Ida203a72c23b94b1848418c9727a5788df421eea Signed-off-by: Jarried Lin <jarried.lin@mediatek.corp-partner.google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/83569 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Yu-Ping Wu <yupingso@google.com> Reviewed-by: Yidi Lin <yidilin@google.com>
90 lines
2.5 KiB
Python
Executable File
90 lines
2.5 KiB
Python
Executable File
#!/usr/bin/env python3
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#
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# SPDX-License-Identifier: GPL-2.0-only
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import struct
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import sys
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import hashlib
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def read(path):
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with open(path, 'rb') as f:
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return f.read()
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def write(path, data):
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with open(path, 'wb') as f:
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f.write(data)
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def padding(data, size, pattern=b'\0'):
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return data + pattern * (size - len(data))
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def align(data, size, pattern=b'\0'):
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return padding(data, (len(data) + (size - 1)) & ~(size - 1), pattern)
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def gen_gfh_info(chip, data):
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entries = {
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'mt8173': 0x000C1000,
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'mt8183': 0x00201000,
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'mt8196': 0x02001000,
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}
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gfh_format = '<44I'
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gfh_size = struct.calcsize(gfh_format)
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load_addr = entries[chip] - gfh_size
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load_size = gfh_size + len(data) + hashlib.sha256().digest_size
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gfh = struct.pack(gfh_format,
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0x014d4d4d, 0x00000038, 0x454c4946, 0x464e495f,
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0x0000004f, 0x00000001, 0x01050001, load_addr,
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load_size, 0x00020000, 0x000000a8, 0x00000020,
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0x000000B0, 0x00000001, 0x014d4d4d, 0x0001000c,
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0x00000001, 0x034d4d4d, 0x00070064, 0x00001182,
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0x00000000, 0x00000000, 0x00000000, 0x00000000,
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0x00000000, 0x00000000, 0x00000000, 0x00000000,
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0x00000000, 0x00000000, 0x00000000, 0x00000000,
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0x00000000, 0x00000000, 0x00000000, 0x00000000,
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0x00000000, 0x00000000, 0x00006400, 0x00001388,
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0x00000000, 0x00000000, 0x00000000, 0x00000000)
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return gfh
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def gen_emmc_header(data):
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header = (padding(struct.pack('<12sII', b'EMMC_BOOT', 1, 512), 512, b'\xff') +
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padding(struct.pack('<8sIIIIIIII', b'BRLYT', 1, 2048, 2048 + len(data),
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0x42424242, 0x00010005, 2048, 2048 + len(data), 1) + b'\0' * 140, 512,
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b'\xff') +
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b'\0' * 1024)
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return header
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def gen_sf_header(data):
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header = (padding(struct.pack('<12sII', b'SF_BOOT', 1, 512), 512, b'\xff') +
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padding(struct.pack('<8sIIIIIIII', b'BRLYT', 1, 2048, 2048 + len(data),
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0x42424242, 0x00010007, 2048, 2048 + len(data), 1) + b'\0' * 140, 512,
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b'\xff') +
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b'\0' * 1024)
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return header
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gen_dev_header = {
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'emmc': gen_emmc_header,
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'sf': gen_sf_header
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}
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def gen_preloader(chip_ver, flash_type, data):
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gfh_info = gen_gfh_info(chip_ver, data)
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gfh_hash = hashlib.sha256(gfh_info + data).digest()
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data = align(gfh_info + data + gfh_hash, 512, b'\xff')
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header = gen_dev_header[flash_type](data)
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return header + data
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def main(argv):
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if len(argv) != 5:
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print('Usage: %s <chip> <flash_type> <input_file> <output_file>' % argv[0])
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print('\t flash_type: emmc|sf')
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print('\t chip : mt8173|mt8183')
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exit(1)
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write(argv[4], gen_preloader(argv[1], argv[2], read(argv[3])))
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if __name__ == '__main__':
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main(sys.argv)
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