68 lines
1.7 KiB
Python
68 lines
1.7 KiB
Python
# BOOT_IMG_MAGIC = 0x12344321
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BOOT_IMG_MAGIC = [ 0xf395c277, 0x7fefd260, 0x0f505235, 0x8079b62c ]
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IMAGE_MAGIC = 0x96f3b83c
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IMAGE_MAGIC_NONE = 0xffffffff
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#
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# Image header flags.
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#
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IMAGE_F_PIC = 0x00000001
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IMAGE_F_SHA256 = 0x00000002 # Image contains hash TLV
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IMAGE_F_PKCS15_RSA2048_SHA256 = 0x00000004 # PKCS15 w/RSA and SHA
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IMAGE_F_ECDSA224_SHA256 = 0x00000008 # ECD
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IMAGE_HEADER_SIZE = 32
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# Digest sizes
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SHA256_DIGEST_SIZE = 32
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# Signature sizes
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RSA_SIZE = 256
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ECDSA_SIZE = 68
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#
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# Image trailer TLV types.
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#
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IMAGE_TLV_SHA256 = 1 # SHA256 of image hdr and body
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IMAGE_TLV_RSA2048 = 2 # RSA2048 of hash output
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IMAGE_TLV_ECDSA224 = 3 # ECDSA of hash output
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OFFSET_VECTOR_TABLE = 0x20
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OFFSET_IH_MAGIC = 0
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OFFSET_IH_TLV_SIZE = 4
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OFFSET_IH_KEY_ID = 6
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OFFSET_IH_PAD1 = 7
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OFFSET_IH_HDR_SIZE = 8
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OFFSET_IH_PAD2 = 10
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OFFSET_IH_IMG_SIZE = 12
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OFFSET_IH_FLAGS = 16
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OFFSET_IH_VER_MAJOR = 20
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OFFSET_IH_VER_MINOR = 21
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OFFSET_IH_REVISION = 22
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OFFSET_IH_BUILD_NUM = 24
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OFFSET_IH_PAD3 = 28
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#struct image_version { uint8_t iv_major; uint8_t iv_minor; uint16_t iv_revision;
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# uint32_t iv_build_num;
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#};
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#
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#/** Image header. All fields are in little endian byte order. */
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#struct image_header {
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# uint32_t ih_magic;
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# uint16_t ih_tlv_size; /* Trailing TLVs */
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# uint8_t ih_key_id;
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# uint8_t _pad1;
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# uint16_t ih_hdr_size;
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# uint16_t _pad2;
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# uint32_t ih_img_size; /* Does not include header. */
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# uint32_t ih_flags;
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# struct image_version ih_ver;
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# uint32_t _pad3;
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#};
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#
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#/** Image trailer TLV format. All fields in little endian. */
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#struct image_tlv {
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# uint8_t it_type;
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# uint8_t _pad;
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# uint16_t it_len;
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#};
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