rockchip: make_fit_atf.py: allow inclusion of a tee
From: Heiko Stuebner <heiko@...> Date: Thu, 26 Sep 2019 15:13:53 +0200
Commit-Message
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@...>
Patch-Comment
arch/arm/mach-rockchip/make_fit_atf.py | 52 +++++++++++++++++++++++--- 1 file changed, 46 insertions(+), 6 deletions(-)
Statistics
- 46 lines added
- 6 lines removed
Changes
-------------------- arch/arm/mach-rockchip/make_fit_atf.py --------------------
index 585edcf9d5..3c045a5e17 100755
@@ -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, 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, num_segments)
+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, 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')
+ 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, tee_elf, uboot_elf, dtbs)
generate_atf_binary(bl31_elf)
+ generate_tee_binary(tee_elf)
if __name__ == "__main__":
main()