[U-Boot] [PATCH v2 1/2] rockchip: make_fit_atf.py: allow inclusion of a tee binary

[Kever Yang]

On 2019/10/7 上午2:10, Heiko Stuebner wrote:
> A trusted execution environment should also get loaded as loadable from
> a fit image, so add the possibility to present a tee.elf to make_fit_atf.py
> that then gets included as additional loadable into the generated its.
>
> For ease of integration the additional loadable is created as atf_(x+1)
> after all others to re-use core generation loops.
>
> Tested against the combinations of 1-part-atf and multi-part-atf each
> time with and without a tee binary present.
>
> Signed-off-by: Heiko Stuebner <heiko at sntech.de>

Reviewed-by: Kever Yang<kever.yang at rock-chips.com>


Thanks,
- Kever
> ---
> changes in v2: none
>
>   arch/arm/mach-rockchip/make_fit_atf.py | 52 +++++++++++++++++++++++---
>   1 file changed, 46 insertions(+), 6 deletions(-)
>
> diff --git a/arch/arm/mach-rockchip/make_fit_atf.py b/arch/arm/mach-rockchip/make_fit_atf.py
> index 585edcf9d5..3c045a5e17 100755
> --- a/arch/arm/mach-rockchip/make_fit_atf.py
> +++ b/arch/arm/mach-rockchip/make_fit_atf.py
> @@ -63,6 +63,21 @@ def append_bl31_node(file, atf_index, phy_addr, elf_entry):
>       file.write('\t\t};\n')
>       file.write('\n')
>   
> +def append_tee_node(file, atf_index, phy_addr, elf_entry):
> +    # Append TEE DT node to input FIT dts file.
> +    data = 'tee_0x%08x.bin' % phy_addr
> +    file.write('\t\tatf_%d {\n' % atf_index)
> +    file.write('\t\t\tdescription = \"TEE\";\n')
> +    file.write('\t\t\tdata = /incbin/("%s");\n' % data)
> +    file.write('\t\t\ttype = "tee";\n')
> +    file.write('\t\t\tarch = "arm64";\n')
> +    file.write('\t\t\tos = "tee";\n')
> +    file.write('\t\t\tcompression = "none";\n')
> +    file.write('\t\t\tload = <0x%08x>;\n' % phy_addr)
> +    file.write('\t\t\tentry = <0x%08x>;\n' % elf_entry)
> +    file.write('\t\t};\n')
> +    file.write('\n')
> +
>   def append_fdt_node(file, dtbs):
>       # Append FDT nodes.
>       cnt = 1
> @@ -115,15 +130,23 @@ def generate_atf_fit_dts_uboot(fit_file, uboot_file_name):
>       index, entry, p_paddr, data = segments[0]
>       fit_file.write(DT_UBOOT % p_paddr)
>   
> -def generate_atf_fit_dts_bl31(fit_file, bl31_file_name, dtbs_file_name):
> +def generate_atf_fit_dts_bl31(fit_file, bl31_file_name, tee_file_name, dtbs_file_name):
>       segments = unpack_elf(bl31_file_name)
>       for index, entry, paddr, data in segments:
>           append_bl31_node(fit_file, index + 1, paddr, entry)
> +    num_segments = len(segments)
> +
> +    if tee_file_name:
> +        tee_segments = unpack_elf(tee_file_name)
> +        for index, entry, paddr, data in tee_segments:
> +            append_tee_node(fit_file, num_segments + index + 1, paddr, entry)
> +        num_segments = num_segments + len(tee_segments)
> +
>       append_fdt_node(fit_file, dtbs_file_name)
>       fit_file.write(DT_IMAGES_NODE_END)
> -    append_conf_node(fit_file, dtbs_file_name, len(segments))
> +    append_conf_node(fit_file, dtbs_file_name, num_segments)
>   
> -def generate_atf_fit_dts(fit_file_name, bl31_file_name, uboot_file_name, dtbs_file_name):
> +def generate_atf_fit_dts(fit_file_name, bl31_file_name, tee_file_name, uboot_file_name, dtbs_file_name):
>       # Generate FIT script for ATF image.
>       if fit_file_name != sys.stdout:
>           fit_file = open(fit_file_name, "wb")
> @@ -132,7 +155,7 @@ def generate_atf_fit_dts(fit_file_name, bl31_file_name, uboot_file_name, dtbs_fi
>   
>       fit_file.write(DT_HEADER)
>       generate_atf_fit_dts_uboot(fit_file, uboot_file_name)
> -    generate_atf_fit_dts_bl31(fit_file, bl31_file_name, dtbs_file_name)
> +    generate_atf_fit_dts_bl31(fit_file, bl31_file_name, tee_file_name, dtbs_file_name)
>       fit_file.write(DT_END)
>   
>       if fit_file_name != sys.stdout:
> @@ -144,6 +167,13 @@ def generate_atf_binary(bl31_file_name):
>           with open(file_name, "wb") as atf:
>               atf.write(data)
>   
> +def generate_tee_binary(tee_file_name):
> +    if tee_file_name:
> +        for index, entry, paddr, data in unpack_elf(tee_file_name):
> +            file_name = 'tee_0x%08x.bin' % paddr
> +            with open(file_name, "wb") as atf:
> +                atf.write(data)
> +
>   def unpack_elf(filename):
>       with open(filename, 'rb') as file:
>           elf = file.read()
> @@ -178,7 +208,14 @@ def main():
>           logging.warning(' BL31 file bl31.elf NOT found, resulting binary is non-functional')
>           logging.warning(' Please read Building section in doc/README.rockchip')
>   
> -    opts, args = getopt.getopt(sys.argv[1:], "o:u:b:h")
> +    if "TEE" in os.environ:
> +        tee_elf = os.getenv("TEE")
> +    elif os.path.isfile("./tee.elf"):
> +        tee_elf = "./tee.elf"
> +    else:
> +        tee_elf = ""
> +
> +    opts, args = getopt.getopt(sys.argv[1:], "o:u:b:t:h")
>       for opt, val in opts:
>           if opt == "-o":
>               fit_its = val
> @@ -186,14 +223,17 @@ def main():
>               uboot_elf = val
>           elif opt == "-b":
>               bl31_elf = val
> +        elif opt == "-t":
> +            tee_elf = val
>           elif opt == "-h":
>               print(__doc__)
>               sys.exit(2)
>   
>       dtbs = args
>   
> -    generate_atf_fit_dts(fit_its, bl31_elf, uboot_elf, dtbs)
> +    generate_atf_fit_dts(fit_its, bl31_elf, tee_elf, uboot_elf, dtbs)
>       generate_atf_binary(bl31_elf)
> +    generate_tee_binary(tee_elf)
>   
>   if __name__ == "__main__":
>       main()