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SPM: Alter sp_gen.mk entry depending on owner of partition

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With recently introduced dualroot CoT for SPs where they are owned
either by SiP or by Platform. SiP owned SPs index starts at SP_PKG1_ID
while Plat owned SPs index starts at SP_PKG5_ID.

This patch modifies SP makefile generator script to take CoT as an
argument and if it is "dualroot" then generates SP_PKG in order
mentioned above, otherwise generates it sequentially.

Signed-off-by: Ruari Phipps <ruari.phipps@arm.com>
Change-Id: Iffad1131787be650a9462f6f8cc09b603cddb3b8
This commit is contained in:
Ruari Phipps 2020-07-24 16:20:57 +01:00 • committed by Manish Pandey
parent 990d972f1b
commit 1e7528ec37
2 changed files with 34 additions and 4 deletions
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2
Makefile
View file

@ -1135,7 +1135,7 @@ endif
# Add Secure Partition packages
ifeq (${NEED_SP_PKG},yes)
$(BUILD_PLAT)/sp_gen.mk: ${SP_MK_GEN} ${SP_LAYOUT_FILE} | ${BUILD_PLAT}
${Q}${PYTHON} "$<" "$@" $(filter-out $<,$^) $(BUILD_PLAT)
${Q}${PYTHON} "$<" "$@" $(filter-out $<,$^) $(BUILD_PLAT) ${COT}
sp: $(SPTOOL) $(DTBS) $(BUILD_PLAT)/sp_gen.mk
${Q}$(SPTOOL) $(SPTOOL_ARGS)
@${ECHO_BLANK_LINE}

36
tools/sptool/sp_mk_generator.py
View file

@ -19,6 +19,7 @@ standard format.
param1: Generated mk file "sp_gen.mk"
param2: "SP_LAYOUT_FILE", json file containing platform provided information
param3: plat out directory
param4: CoT parameter
Generated "sp_gen.mk" file contains triplet of following information for each
Secure Partition entry
@ -58,11 +59,39 @@ json_dir = os.path.dirname(json_file)
gen_file = os.path.abspath(sys.argv[1])
out_dir = os.path.abspath(sys.argv[3])
dtb_dir = out_dir + "/fdts/"
MAX_SP = 8
dualroot = sys.argv[4].lower() == "dualroot"
split = int(MAX_SP / 2)
print(dtb_dir)
platform_count = 1
sip_count = 1
with open(gen_file, 'w') as out_file:
for idx, key in enumerate(data.keys()):
pkg_num = idx + 1
if (pkg_num > MAX_SP):
print("WARNING: Too many secure partitions\n")
exit(-1)
if dualroot:
owner = data[key].get('owner')
if owner == "Plat":
if (platform_count > split):
print("WARNING: Maximum Secure partitions by Plat " +
"have been exceeded (" + str(split) + ")\n")
exit(-1)
pkg_num = split + platform_count
platform_count += 1
elif (sip_count > split):
print("WARNING: Maximum Secure partitions by SiP " +
"have been exceeded (" + str(split) + ")\n")
exit(-1)
else:
pkg_num = sip_count
sip_count += 1
"""
Append FDT_SOURCES
"""
@ -81,10 +110,10 @@ with open(gen_file, 'w') as out_file:
Extract uuid from partition manifest
"""
pm_file = open(dts)
key = "uuid"
uuid_key = "uuid"
for line in pm_file:
if key in line:
if uuid_key in line:
uuid_hex = re.findall(r'\<(.+?)\>', line)[0];
# PM has uuid in format 0xABC... 0x... 0x... 0x...
@ -103,5 +132,6 @@ with open(gen_file, 'w') as out_file:
"""
Append CRT_ARGS
"""
out_file.write("CRT_ARGS += --sp-pkg" + str(idx + 1) + " " + dst + "\n")
out_file.write("CRT_ARGS += --sp-pkg" + str(pkg_num) + " " + dst + "\n")
out_file.write("\n")