Quoting Lucas De Marchi (2023-04-03 17:24:37)
> Since we are now using unversioned GuC/HuC, it's useful to be able to
> dump the firmware blob and get that information from the CSS header.
> Add a tool that decodes that information and dumps the raw header.
>
> Example output:
>
> $ tools/intel-gfx-fw-info /lib/firmware/i915/tgl_guc_70.bin
> version: 70.5.1
> date: 2022-09-09
> raw dump:
> 00000000 06 00 00 00 a1 00 00 00 00 00 01 00 00 00 00 00 ................
> 00000010 86 80 00 00 09 09 22 20 71 17 01 00 40 00 00 00 ......" q...@...
> 00000020 40 00 00 00 01 00 00 00 09 21 45 00 73 79 73 5f @........!E.sys_
> 00000030 67 62 73 62 50 43 2d 31 2e 30 2e 33 31 35 30 00 gbsbPC-1.0.3150.
> 00000040 01 05 46 00 00 00 00 00 00 00 00 00 00 00 00 00 ..F.............
> 00000050 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
> 00000060 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
> 00000070 00 00 00 00 00 00 00 00 00 10 80 00 00 01 40 00 ..............@.
>
> struct uc_css_header:
> - module_type: 0x6
> - header_size_dw: 0xa1
> - header_version: 0x10000
> - module_id: 0x0
> - module_vendor: 0x8086
> - date: 0x20220909
> - size_dw: 0x11771
> - key_size_dw: 0x40
> - modulus_size_dw: 0x40
> - exponent_size_dw: 0x1
> - time: 0x452109
> - username: b'sys_gbsb'
> - buildnumber: b'PC-1.0.3150\x00'
> - sw_version: 0x460501
> - vf_version: 0x0
> - reserved0: [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
> - rsvd: <rsvd private_data_size=0x801000, reserved1=0x801000>
> - header_info: 0x400100
>
> Signed-off-by: Lucas De Marchi <lucas.demarchi@xxxxxxxxx>
> ---
> tools/intel-gfx-fw-info | 120 ++++++++++++++++++++++++++++++++++++++++
> tools/meson.build | 2 +-
> 2 files changed, 121 insertions(+), 1 deletion(-)
> create mode 100755 tools/intel-gfx-fw-info
>
> diff --git a/tools/intel-gfx-fw-info b/tools/intel-gfx-fw-info
> new file mode 100755
> index 000000000..fc1fafdf5
> --- /dev/null
> +++ b/tools/intel-gfx-fw-info
> @@ -0,0 +1,120 @@
> +#!/usr/bin/env python3
> +# pylint: disable=C0301
> +# SPDX-License-Identifier: (GPL-2.0 OR MIT)
> +#
> +# Copyright (C) 2023 Intel Corporation
> +
> +import argparse
> +import logging
> +import pprint
> +import sys
> +import typing
> +
> +from dissect import cstruct
Since we are not packaging this tool in a way that dependencies are
automatically installed, I think it is worth to capture an ImportError
here and point the user to the github repository for this dependency.
Acked-by: Gustavo Sousa <gustavo.sousa@xxxxxxxxx>
> +
> +# struct definition below should match the one from i915
> +# (drivers/gpu/drm/i915/gt/uc/intel_uc_fw_abi.h) and xe
> +# (drivers/gpu/drm/xe/xe_uc_fw_abi.h).
> +#
> +# For compatibility reasons with dissect.cstruct python module, the following
> +# things are changed from the original kernel definition:
> +#
> +# 1) Comments removed
> +# 2) No anonymous union - not compatible with the
> +# dumpstruct(), give it a name
> +
> +CDEF = """
> +typedef uint32 u32;
> +
> +struct uc_css_header {
> + u32 module_type;
> + u32 header_size_dw;
> + u32 header_version;
> + u32 module_id;
> + u32 module_vendor;
> + u32 date;
> + u32 size_dw;
> + u32 key_size_dw;
> + u32 modulus_size_dw;
> + u32 exponent_size_dw;
> + u32 time;
> + char username[8];
> + char buildnumber[12];
> + u32 sw_version;
> + u32 vf_version;
> + u32 reserved0[12];
> + union {
> + u32 private_data_size;
> + u32 reserved1;
> + } rsvd;
> + u32 header_info;
> +};
> +"""
> +
> +logger = logging.getLogger(__name__)
> +
> +
> +def ffs(x: int) -> int:
> + """Returns the index, counting from 0, of the
> + least significant set bit in `x`.
> + """
> + return (x & -x).bit_length() - 1
> +
> +
> +def FIELD_GET(mask: int, value: int) -> int:
> + return (value & mask) >> ffs(mask)
> +
> +
> +def decode(fw) -> str:
> + data = []
> +
> + CSS_SW_VERSION_UC_MAJOR = 0xFF << 16
> + CSS_SW_VERSION_UC_MINOR = 0xFF << 8
> + CSS_SW_VERSION_UC_PATCH = 0xFF
> + major = FIELD_GET(CSS_SW_VERSION_UC_MAJOR, fw.sw_version)
> + minor = FIELD_GET(CSS_SW_VERSION_UC_MINOR, fw.sw_version)
> + patch = FIELD_GET(CSS_SW_VERSION_UC_PATCH, fw.sw_version)
> + data += [f"version: {major}.{minor}.{patch}"]
> +
> + CSS_DATE_DAY = 0xFF
> + CSS_DATE_MONTH = 0xFF << 8
> + CSS_DATE_YEAR = 0xFFFF << 16
> + day = FIELD_GET(CSS_DATE_DAY, fw.date)
> + month = FIELD_GET(CSS_DATE_MONTH, fw.date)
> + year = FIELD_GET(CSS_DATE_YEAR, fw.date)
> + data += [f"date: {year:02x}-{month:02x}-{day:02x}"]
> +
> + return data
> +
> +
> +def parse_args(argv: typing.List[str]) -> argparse.Namespace:
> + description = "Dump GuC/HuC firmware header"
> + parser = argparse.ArgumentParser(prog="intel-gfx-fw-info", description=description)
> +
> + parser.add_argument("filename", help="GuC/HuC firmware file")
> +
> + return parser.parse_args(argv)
> +
> +
> +def main(argv: typing.List[str]) -> int:
> + args = parse_args(argv)
> +
> + cparser = cstruct.cstruct()
> + cparser.load(CDEF)
> +
> + try:
> + with open(args.filename, mode="rb") as f:
> + fw = cparser.uc_css_header(f)
> + except FileNotFoundError as e:
> + logger.fatal(e)
> + return 1
> +
> + print(*decode(fw), sep="\n")
> + print("raw dump:", end="")
> + cstruct.dumpstruct(fw, color=sys.stdout.isatty())
> +
> + return 0
> +
> +
> +if __name__ == "__main__":
> + sys.exit(main(sys.argv[1:]))
> diff --git a/tools/meson.build b/tools/meson.build
> index 4c45f16b9..88c58adfe 100644
> --- a/tools/meson.build
> +++ b/tools/meson.build
> @@ -81,7 +81,7 @@ executable('intel_reg', sources : intel_reg_src,
> '-DIGT_DATADIR="@0@"'.format(join_paths(prefix, datadir)),
> ])
>
> -install_data('intel_gpu_abrt', install_dir : bindir)
> +install_data(['intel_gpu_abrt', 'intel-gfx-fw-info'], install_dir : bindir)
>
> install_subdir('registers', install_dir : datadir)
>
> --
> 2.39.0
>
