1# 2# Copyright (c) 2015-2025, Arm Limited and Contributors. All rights reserved. 3# 4# SPDX-License-Identifier: BSD-3-Clause 5# 6 7include common/fdt_wrappers.mk 8 9ifeq (${ARCH},aarch32) 10 ifeq (${AARCH32_SP},none) 11 $(error Variable AARCH32_SP has to be set for AArch32) 12 endif 13endif 14 15ifeq (${ARCH}, aarch64) 16 # On ARM standard platorms, the TSP can execute from Trusted SRAM, Trusted 17 # DRAM (if available) or the TZC secured area of DRAM. 18 # TZC secured DRAM is the default. 19 20 ARM_TSP_RAM_LOCATION ?= dram 21 22 ifeq (${ARM_TSP_RAM_LOCATION}, tsram) 23 ARM_TSP_RAM_LOCATION_ID = ARM_TRUSTED_SRAM_ID 24 else ifeq (${ARM_TSP_RAM_LOCATION}, tdram) 25 ARM_TSP_RAM_LOCATION_ID = ARM_TRUSTED_DRAM_ID 26 else ifeq (${ARM_TSP_RAM_LOCATION}, dram) 27 ARM_TSP_RAM_LOCATION_ID = ARM_DRAM_ID 28 else 29 $(error Unsupported ARM_TSP_RAM_LOCATION value) 30 endif 31 32 # Process flags 33 # Process ARM_BL31_IN_DRAM flag 34 ARM_BL31_IN_DRAM := 0 35 $(eval $(call assert_boolean,ARM_BL31_IN_DRAM)) 36 $(eval $(call add_define,ARM_BL31_IN_DRAM)) 37else 38 ARM_TSP_RAM_LOCATION_ID = ARM_TRUSTED_SRAM_ID 39endif 40 41$(eval $(call add_define,ARM_TSP_RAM_LOCATION_ID)) 42 43 44# For the original power-state parameter format, the State-ID can be encoded 45# according to the recommended encoding or zero. This flag determines which 46# State-ID encoding to be parsed. 47ARM_RECOM_STATE_ID_ENC := 0 48 49# If the PSCI_EXTENDED_STATE_ID is set, then ARM_RECOM_STATE_ID_ENC need to 50# be set. Else throw a build error. 51ifeq (${PSCI_EXTENDED_STATE_ID}, 1) 52 ifeq (${ARM_RECOM_STATE_ID_ENC}, 0) 53 $(error Build option ARM_RECOM_STATE_ID_ENC needs to be set if \ 54 PSCI_EXTENDED_STATE_ID is set for ARM platforms) 55 endif 56endif 57 58# Process ARM_RECOM_STATE_ID_ENC flag 59$(eval $(call assert_boolean,ARM_RECOM_STATE_ID_ENC)) 60$(eval $(call add_define,ARM_RECOM_STATE_ID_ENC)) 61 62# Process ARM_DISABLE_TRUSTED_WDOG flag 63# By default, Trusted Watchdog is always enabled unless SPIN_ON_BL1_EXIT is set 64ifeq (${SPIN_ON_BL1_EXIT}, 1) 65ARM_DISABLE_TRUSTED_WDOG := 1 66else 67ARM_DISABLE_TRUSTED_WDOG := 0 68endif 69 70$(eval $(call assert_boolean,ARM_DISABLE_TRUSTED_WDOG)) 71$(eval $(call add_define,ARM_DISABLE_TRUSTED_WDOG)) 72 73# Process ARM_CONFIG_CNTACR 74ARM_CONFIG_CNTACR := 1 75$(eval $(call assert_boolean,ARM_CONFIG_CNTACR)) 76$(eval $(call add_define,ARM_CONFIG_CNTACR)) 77 78# Process ARM_BL31_IN_DRAM flag 79ARM_BL31_IN_DRAM := 0 80$(eval $(call assert_boolean,ARM_BL31_IN_DRAM)) 81$(eval $(call add_define,ARM_BL31_IN_DRAM)) 82 83# Macro to enable ACS SMC handler 84PLAT_ARM_ACS_SMC_HANDLER := 0 85ifeq (${ENABLE_ACS_SMC}, 1) 86PLAT_ARM_ACS_SMC_HANDLER := 1 87endif 88 89# Build macro necessary for branching to ACS tests 90$(eval $(call add_define,PLAT_ARM_ACS_SMC_HANDLER)) 91 92# As per CCA security model, all root firmware must execute from on-chip secure 93# memory. This means we must not run BL31 from TZC-protected DRAM. 94ifeq (${ARM_BL31_IN_DRAM},1) 95 ifeq (${ENABLE_RMM},1) 96 $(error BL31 must not run from DRAM on RME-systems. Please set ARM_BL31_IN_DRAM to 0) 97 endif 98endif 99 100# Process ARM_PLAT_MT flag 101ARM_PLAT_MT := 0 102$(eval $(call assert_boolean,ARM_PLAT_MT)) 103$(eval $(call add_define,ARM_PLAT_MT)) 104 105# Use translation tables library v2 by default 106ARM_XLAT_TABLES_LIB_V1 := 0 107$(eval $(call assert_boolean,ARM_XLAT_TABLES_LIB_V1)) 108$(eval $(call add_define,ARM_XLAT_TABLES_LIB_V1)) 109 110# Don't have the Linux kernel as a BL33 image by default 111ARM_LINUX_KERNEL_AS_BL33 := 0 112$(eval $(call assert_boolean,ARM_LINUX_KERNEL_AS_BL33)) 113$(eval $(call add_define,ARM_LINUX_KERNEL_AS_BL33)) 114 115ifeq (${ARM_LINUX_KERNEL_AS_BL33},1) 116 USE_KERNEL_DT_CONVENTION := 1 117 118 ifneq (${ARCH},aarch64) 119 ifneq (${RESET_TO_SP_MIN},1) 120 $(error ARM_LINUX_KERNEL_AS_BL33 is only available if RESET_TO_SP_MIN=1.) 121 endif 122 endif 123 ifndef HW_CONFIG_BASE 124 ifndef ARM_PRELOADED_DTB_BASE 125 $(error If ARM_LINUX_KERNEL_AS_BL33 is used, either HW_CONFIG_BASE or \ 126 ARM_PRELOADED_DTB_BASE must be set. ) 127 endif 128 129 HW_CONFIG_BASE := ${ARM_PRELOADED_DTB_BASE} 130 $(eval $(call add_define,ARM_PRELOADED_DTB_BASE)) 131 endif 132endif 133 134# Add the build options to pack Trusted OS Extra1 and Trusted OS Extra2 images 135# in the FIP if the platform requires. 136ifneq ($(BL32_EXTRA1),) 137ifneq (${DECRYPTION_SUPPORT},none) 138$(eval $(call TOOL_ADD_IMG,bl32_extra1,--tos-fw-extra1,,$(ENCRYPT_BL32))) 139else 140$(eval $(call TOOL_ADD_IMG,bl32_extra1,--tos-fw-extra1)) 141endif 142endif 143ifneq ($(BL32_EXTRA2),) 144ifneq (${DECRYPTION_SUPPORT},none) 145$(eval $(call TOOL_ADD_IMG,bl32_extra2,--tos-fw-extra2,,$(ENCRYPT_BL32))) 146else 147$(eval $(call TOOL_ADD_IMG,bl32_extra2,--tos-fw-extra2)) 148endif 149endif 150 151# Enable PSCI_STAT_COUNT/RESIDENCY APIs on ARM platforms 152ENABLE_PSCI_STAT := 1 153ENABLE_PMF := 1 154 155# Override the standard libc with optimised libc_asm 156OVERRIDE_LIBC := 1 157ifeq (${OVERRIDE_LIBC},1) 158 include lib/libc/libc_asm.mk 159endif 160 161# On ARM platforms, separate the code and read-only data sections to allow 162# mapping the former as executable and the latter as execute-never. 163SEPARATE_CODE_AND_RODATA := 1 164 165# On ARM platforms, disable SEPARATE_NOBITS_REGION by default. Both PROGBITS 166# and NOBITS sections of BL31 image are adjacent to each other and loaded 167# into Trusted SRAM. 168SEPARATE_NOBITS_REGION := 0 169 170# In order to support SEPARATE_NOBITS_REGION for Arm platforms, we need to load 171# BL31 PROGBITS into secure DRAM space and BL31 NOBITS into SRAM. Hence mandate 172# the build to require that ARM_BL31_IN_DRAM is enabled as well. 173ifeq ($(SEPARATE_NOBITS_REGION),1) 174 ifneq ($(ARM_BL31_IN_DRAM),1) 175 $(error For SEPARATE_NOBITS_REGION, ARM_BL31_IN_DRAM must be enabled) 176 endif 177 ifneq ($(RECLAIM_INIT_CODE),0) 178 $(error For SEPARATE_NOBITS_REGION, RECLAIM_INIT_CODE cannot be supported) 179 endif 180endif 181 182# Enable PIE support for RESET_TO_BL31/RESET_TO_SP_MIN case 183ifneq ($(filter 1,${RESET_TO_BL31} ${RESET_TO_SP_MIN}),) 184 ENABLE_PIE := 1 185endif 186 187# On Arm platform, disable ARM_FW_CONFIG_LOAD_ENABLE by default. 188ARM_FW_CONFIG_LOAD_ENABLE := 0 189$(eval $(call assert_boolean,ARM_FW_CONFIG_LOAD_ENABLE)) 190$(eval $(call add_define,ARM_FW_CONFIG_LOAD_ENABLE)) 191 192# In order to enable ARM_FW_CONFIG_LOAD_ENABLE for the Arm platform, the 193# platform should be reset to BL2 (RESET_TO_BL2=1), and FW_CONFIG must be 194# specified. 195ifeq (${ARM_FW_CONFIG_LOAD_ENABLE},1) 196 ifneq (${RESET_TO_BL2},1) 197 $(error RESET_TO_BL2 must be enabled when ARM_FW_CONFIG_LOAD_ENABLE \ 198 is enabled) 199 endif 200 ifeq (${FW_CONFIG},) 201 $(error FW_CONFIG must be specified when ARM_FW_CONFIG_LOAD_ENABLE \ 202 is enabled) 203 endif 204endif 205 206# Disable GPT parser support, use FIP image by default 207ARM_GPT_SUPPORT := 0 208$(eval $(call assert_boolean,ARM_GPT_SUPPORT)) 209$(eval $(call add_define,ARM_GPT_SUPPORT)) 210 211# Include necessary sources to parse GPT image 212ifeq (${ARM_GPT_SUPPORT}, 1) 213 BL2_SOURCES += drivers/partition/gpt.c \ 214 drivers/partition/partition.c 215endif 216 217ifeq ($(PSA_FWU_SUPPORT),1) 218 # GPT support is recommended as per PSA FWU specification hence 219 # PSA FWU implementation is tightly coupled with GPT support, 220 # and it does not support other formats. 221 ifneq ($(ARM_GPT_SUPPORT),1) 222 $(error For PSA_FWU_SUPPORT, ARM_GPT_SUPPORT must be enabled) 223 endif 224 FWU_MK := drivers/fwu/fwu.mk 225 $(info Including ${FWU_MK}) 226 include ${FWU_MK} 227endif 228 229ifeq (${ARCH}, aarch64) 230PLAT_INCLUDES += -Iinclude/plat/arm/common/aarch64 231endif 232 233PLAT_BL_COMMON_SOURCES += plat/arm/common/${ARCH}/arm_helpers.S \ 234 plat/arm/common/arm_common.c \ 235 plat/arm/common/arm_console.c 236 237ifeq (${ARM_XLAT_TABLES_LIB_V1}, 1) 238PLAT_BL_COMMON_SOURCES += lib/xlat_tables/xlat_tables_common.c \ 239 lib/xlat_tables/${ARCH}/xlat_tables.c 240else 241include lib/xlat_tables_v2/xlat_tables.mk 242PLAT_BL_COMMON_SOURCES += ${XLAT_TABLES_LIB_SRCS} 243endif 244 245ARM_IO_SOURCES += plat/arm/common/arm_io_storage.c \ 246 plat/arm/common/fconf/arm_fconf_io.c 247ifeq (${SPD},spmd) 248 ifeq (${BL2_ENABLE_SP_LOAD},1) 249 ARM_IO_SOURCES += plat/arm/common/fconf/arm_fconf_sp.c 250 endif 251endif 252 253BL1_SOURCES += drivers/io/io_fip.c \ 254 drivers/io/io_memmap.c \ 255 drivers/io/io_storage.c \ 256 plat/arm/common/arm_bl1_setup.c \ 257 plat/arm/common/arm_err.c \ 258 ${ARM_IO_SOURCES} 259 260ifdef EL3_PAYLOAD_BASE 261# Need the plat_arm_program_trusted_mailbox() function to release secondary CPUs from 262# their holding pen 263BL1_SOURCES += plat/arm/common/arm_pm.c 264endif 265 266BL2_SOURCES += drivers/delay_timer/delay_timer.c \ 267 drivers/delay_timer/generic_delay_timer.c \ 268 drivers/io/io_fip.c \ 269 drivers/io/io_memmap.c \ 270 drivers/io/io_storage.c \ 271 plat/arm/common/arm_bl2_setup.c \ 272 plat/arm/common/arm_err.c \ 273 common/tf_crc32.c \ 274 ${ARM_IO_SOURCES} 275 276# Firmware Configuration Framework sources 277include lib/fconf/fconf.mk 278 279BL1_SOURCES += ${FCONF_SOURCES} ${FCONF_DYN_SOURCES} 280BL2_SOURCES += ${FCONF_SOURCES} ${FCONF_DYN_SOURCES} 281 282# Add `libfdt` and Arm common helpers required for Dynamic Config 283include lib/libfdt/libfdt.mk 284 285DYN_CFG_SOURCES += plat/arm/common/arm_dyn_cfg.c \ 286 plat/arm/common/arm_dyn_cfg_helpers.c \ 287 common/uuid.c 288 289DYN_CFG_SOURCES += ${FDT_WRAPPERS_SOURCES} 290 291BL1_SOURCES += ${DYN_CFG_SOURCES} 292BL2_SOURCES += ${DYN_CFG_SOURCES} 293 294# The Arm platforms use the default BL2 mem params desc. 295ARM_PLAT_PROVIDES_BL2_MEM_PARAMS := 0 296 297# Because BL1/BL2 execute in AArch64 mode but BL32 in AArch32 we need to use 298# the AArch32 descriptors. 299ifeq (${JUNO_AARCH32_EL3_RUNTIME},1) 300BL2_SOURCES += plat/arm/common/aarch32/arm_bl2_mem_params_desc.c 301else 302ifeq ($(ARM_PLAT_PROVIDES_BL2_MEM_PARAMS),0) 303BL2_SOURCES += plat/arm/common/${ARCH}/arm_bl2_mem_params_desc.c 304endif 305endif 306BL2_SOURCES += plat/arm/common/arm_image_load.c \ 307 common/desc_image_load.c 308ifeq (${SPD},opteed) 309BL2_SOURCES += lib/optee/optee_utils.c 310endif 311 312BL2U_SOURCES += drivers/delay_timer/delay_timer.c \ 313 drivers/delay_timer/generic_delay_timer.c \ 314 plat/arm/common/arm_bl2u_setup.c 315 316BL31_SOURCES += plat/arm/common/arm_bl31_setup.c \ 317 plat/arm/common/arm_pm.c \ 318 plat/arm/common/arm_topology.c \ 319 plat/common/plat_psci_common.c 320 321ifeq (${PLAT_ARM_ACS_SMC_HANDLER},1) 322BL31_SOURCES += plat/arm/common/plat_acs_smc_handler.c \ 323 ${VENDOR_EL3_SRCS} 324endif 325 326ifeq (${TRANSFER_LIST}, 1) 327include lib/transfer_list/transfer_list.mk 328 329BL1_SOURCES += plat/arm/common/arm_transfer_list.c 330BL2_SOURCES += plat/arm/common/arm_transfer_list.c 331BL31_SOURCES += plat/arm/common/arm_transfer_list.c 332endif 333 334ifneq (${DECRYPTION_SUPPORT},none) 335BL1_SOURCES += drivers/io/io_encrypted.c 336BL2_SOURCES += drivers/io/io_encrypted.c 337endif 338 339ifneq ($(filter 1,${ENABLE_PMF} ${ETHOSN_NPU_DRIVER}),) 340ARM_SVC_HANDLER_SRCS := 341 342ifeq (${ENABLE_PMF},1) 343ARM_SVC_HANDLER_SRCS += lib/pmf/pmf_smc.c 344endif 345 346ifeq (${ETHOSN_NPU_DRIVER},1) 347ARM_SVC_HANDLER_SRCS += plat/arm/common/fconf/fconf_ethosn_getter.c \ 348 drivers/delay_timer/delay_timer.c \ 349 drivers/arm/ethosn/ethosn_smc.c 350ifeq (${ETHOSN_NPU_TZMP1},1) 351ARM_SVC_HANDLER_SRCS += drivers/arm/ethosn/ethosn_big_fw.c 352endif 353endif 354 355ifeq (${ARCH}, aarch64) 356BL31_SOURCES += plat/arm/common/aarch64/execution_state_switch.c\ 357 plat/arm/common/arm_sip_svc.c \ 358 plat/arm/common/plat_arm_sip_svc.c \ 359 ${ARM_SVC_HANDLER_SRCS} 360else 361BL32_SOURCES += plat/arm/common/arm_sip_svc.c \ 362 plat/arm/common/plat_arm_sip_svc.c \ 363 ${ARM_SVC_HANDLER_SRCS} 364endif 365endif 366 367ifeq (${EL3_EXCEPTION_HANDLING},1) 368BL31_SOURCES += plat/common/aarch64/plat_ehf.c 369endif 370 371ifeq (${SDEI_SUPPORT},1) 372BL31_SOURCES += plat/arm/common/aarch64/arm_sdei.c 373ifeq (${SDEI_IN_FCONF},1) 374BL31_SOURCES += plat/arm/common/fconf/fconf_sdei_getter.c 375endif 376endif 377 378# Pointer Authentication sources 379ifeq ($(BRANCH_PROTECTION),$(filter $(BRANCH_PROTECTION),1 2 3 5)) 380PLAT_BL_COMMON_SOURCES += plat/arm/common/aarch64/arm_pauth.c 381endif 382 383ifeq (${SPD},spmd) 384BL31_SOURCES += plat/common/plat_spmd_manifest.c \ 385 common/uuid.c \ 386 ${LIBFDT_SRCS} 387 388BL31_SOURCES += ${FDT_WRAPPERS_SOURCES} 389endif 390 391ifeq (${DRTM_SUPPORT},1) 392BL31_SOURCES += plat/arm/common/arm_err.c 393endif 394 395ifneq ($(filter 1,${MEASURED_BOOT} ${TRUSTED_BOARD_BOOT} ${DRTM_SUPPORT}),) 396 PLAT_INCLUDES += -Iplat/arm/common \ 397 -Iinclude/drivers/auth/mbedtls 398 ifeq (${HASH_ALG}, sha512) 399 ARM_ROTPK_HASH_LEN := 64 400 else ifeq (${HASH_ALG}, sha384) 401 ARM_ROTPK_HASH_LEN := 48 402 else 403 ARM_ROTPK_HASH_LEN := 32 404 endif 405 $(eval $(call add_define,ARM_ROTPK_HASH_LEN)) 406endif 407 408ifneq (${TRUSTED_BOARD_BOOT},0) 409 410 # Include common TBB sources 411 AUTH_MK := drivers/auth/auth.mk 412 $(info Including ${AUTH_MK}) 413 include ${AUTH_MK} 414 415 # Include the selected chain of trust sources. 416 ifeq (${COT},tbbr) 417 BL1_SOURCES += drivers/auth/tbbr/tbbr_cot_common.c \ 418 drivers/auth/tbbr/tbbr_cot_bl1.c 419 ifneq (${COT_DESC_IN_DTB},0) 420 BL2_SOURCES += lib/fconf/fconf_cot_getter.c 421 else 422 # Juno has its own TBBR CoT file for BL2 423 ifeq (${PLAT},juno) 424 BL2_SOURCES += drivers/auth/tbbr/tbbr_cot_common.c 425 endif 426 endif 427 else ifeq (${COT},dualroot) 428 BL1_SOURCES += drivers/auth/dualroot/bl1_cot.c 429 ifneq (${COT_DESC_IN_DTB},0) 430 BL2_SOURCES += lib/fconf/fconf_cot_getter.c 431 endif 432 else ifeq (${COT},cca) 433 BL1_SOURCES += drivers/auth/cca/bl1_cot.c 434 ifneq (${COT_DESC_IN_DTB},0) 435 BL2_SOURCES += lib/fconf/fconf_cot_getter.c 436 endif 437 else 438 $(error Unknown chain of trust ${COT}) 439 endif 440 441 ifeq (${COT_DESC_IN_DTB},0) 442 ifeq (${COT},dualroot) 443 COTDTPATH := fdts/dualroot_cot_descriptors.dts 444 else ifeq (${COT},cca) 445 COTDTPATH := fdts/cca_cot_descriptors.dts 446 else ifeq (${COT},tbbr) 447 ifneq (${PLAT},juno) 448 COTDTPATH := fdts/tbbr_cot_descriptors.dts 449 endif 450 endif 451 endif 452 453 BL1_SOURCES += ${AUTH_SOURCES} \ 454 bl1/tbbr/tbbr_img_desc.c \ 455 plat/arm/common/arm_bl1_fwu.c \ 456 plat/common/tbbr/plat_tbbr.c 457 458 BL2_SOURCES += ${AUTH_SOURCES} \ 459 plat/common/tbbr/plat_tbbr.c 460 461 $(eval $(call TOOL_ADD_IMG,ns_bl2u,--fwu,FWU_)) 462 463 IMG_PARSER_LIB_MK := drivers/auth/mbedtls/mbedtls_x509.mk 464 465 $(info Including ${IMG_PARSER_LIB_MK}) 466 include ${IMG_PARSER_LIB_MK} 467endif 468 469# Include Measured Boot makefile before any Crypto library makefile. 470# Crypto library makefile may need default definitions of Measured Boot build 471# flags present in Measured Boot makefile. 472ifneq ($(filter 1,${MEASURED_BOOT} ${DRTM_SUPPORT}),) 473 MEASURED_BOOT_MK := drivers/measured_boot/event_log/event_log.mk 474 $(info Including ${MEASURED_BOOT_MK}) 475 include ${MEASURED_BOOT_MK} 476 477 BL1_LIBS += $(LIBEVLOG_LIBS) 478 BL1_INCLUDE_DIRS += $(LIBEVLOG_INCLUDE_DIRS) 479 480 BL2_LIBS += $(LIBEVLOG_LIBS) 481 BL2_INCLUDE_DIRS += $(LIBEVLOG_INCLUDE_DIRS) 482 483 ifeq (${MEASURED_BOOT},1) 484 ifeq (${SPD_tspd},1) 485 BL32_LIBS += $(LIBEVLOG_LIBS) 486 BL32_INCLUDE_DIRS += $(LIBEVLOG_INCLUDE_DIRS) 487 endif 488 endif 489 490 ifeq (${DRTM_SUPPORT},1) 491 BL31_LIBS += $(LIBEVLOG_LIBS) 492 BL31_INCLUDE_DIRS += $(LIBEVLOG_INCLUDE_DIRS) 493 endif 494endif 495 496ifneq ($(filter 1,${MEASURED_BOOT} ${DRTM_SUPPORT}),) 497ifeq (${TRUSTED_BOARD_BOOT},0) 498 CRYPTO_SOURCES := drivers/auth/crypto_mod.c 499 BL1_SOURCES += ${CRYPTO_SOURCES} 500 BL2_SOURCES += ${CRYPTO_SOURCES} 501endif 502endif 503 504ifeq (${DRTM_SUPPORT},1) 505 BL31_SOURCES += drivers/auth/crypto_mod.c 506endif 507 508ifneq ($(filter 1,${MEASURED_BOOT} ${TRUSTED_BOARD_BOOT} ${DRTM_SUPPORT}),) 509 FCONF_TBB_SOURCES := lib/fconf/fconf_tbbr_getter.c 510 BL1_SOURCES += ${FCONF_TBB_SOURCES} 511 BL2_SOURCES += ${FCONF_TBB_SOURCES} 512 513 # We expect to locate the *.mk files under the directories specified below 514 CRYPTO_LIB_MK := drivers/auth/mbedtls/mbedtls_crypto.mk 515 516 $(info Including ${CRYPTO_LIB_MK}) 517 include ${CRYPTO_LIB_MK} 518endif 519 520ifeq (${RECLAIM_INIT_CODE}, 1) 521 ifeq (${ARM_XLAT_TABLES_LIB_V1}, 1) 522 $(error To reclaim init code xlat tables v2 must be used) 523 endif 524endif 525 526ifneq ($(COTDTPATH),) 527 # no custom flags 528 $(eval $(call MAKE_PRE,$(BUILD_PLAT)/$(COTDTPATH),$(COTDTPATH),$(BUILD_PLAT)/$(COTDTPATH:.dts=.o.d))) 529 530 $(BUILD_PLAT)/$(COTDTPATH:.dts=.c): $(BUILD_PLAT)/$(COTDTPATH) | $$(@D)/ 531 $(if $(host-poetry),$(q)$(host-poetry) -q install --no-root) 532 $(q)$(if $(host-poetry),$(host-poetry) run )cot-dt2c convert-to-c $< $@ 533 534 BL2_SOURCES += $(BUILD_PLAT)/$(COTDTPATH:.dts=.c) 535endif 536