aboutsummaryrefslogtreecommitdiff
path: root/Makefile
blob: 7df39b4e793130c93581f5893b02264dd23d47cd (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
#
# SPDX-License-Identifier: BSD-2-Clause
#
# Copyright (c) 2019 Western Digital Corporation or its affiliates.
#
# Authors:
#   Anup Patel <anup.patel@wdc.com>
#

# Select Make Options:
# o  Do not use make's built-in rules
# o  Do not print "Entering directory ...";
MAKEFLAGS += -r --no-print-directory

# Readlink -f requires GNU readlink
ifeq ($(shell uname -s),Darwin)
READLINK ?= greadlink
else
READLINK ?= readlink
endif

# Find out source, build, and install directories
src_dir=$(CURDIR)
ifdef O
 build_dir=$(shell $(READLINK) -f $(O))
else
 build_dir=$(CURDIR)/build
endif
ifeq ($(build_dir),$(CURDIR))
$(error Build directory is same as source directory.)
endif
install_root_dir_default=$(CURDIR)/install
ifdef I
 install_root_dir=$(shell $(READLINK) -f $(I))
else
 install_root_dir=$(install_root_dir_default)/usr
endif
ifeq ($(install_root_dir),$(CURDIR))
$(error Install root directory is same as source directory.)
endif
ifeq ($(install_root_dir),$(build_dir))
$(error Install root directory is same as build directory.)
endif
ifdef PLATFORM_DIR
  platform_dir_path=$(shell $(READLINK) -f $(PLATFORM_DIR))
  ifdef PLATFORM
    platform_parent_dir=$(platform_dir_path)
  else
    PLATFORM=$(shell basename $(platform_dir_path))
    platform_parent_dir=$(shell realpath ${platform_dir_path}/..)
  endif
else
 platform_parent_dir=$(src_dir)/platform
endif
ifndef PLATFORM_DEFCONFIG
PLATFORM_DEFCONFIG=defconfig
endif

# Check if verbosity is ON for build process
CMD_PREFIX_DEFAULT := @
ifeq ($(V), 1)
	CMD_PREFIX :=
else
	CMD_PREFIX := $(CMD_PREFIX_DEFAULT)
endif

# Setup path of directories
export platform_subdir=$(PLATFORM)
export platform_src_dir=$(platform_parent_dir)/$(platform_subdir)
export platform_build_dir=$(build_dir)/platform/$(platform_subdir)
export include_dir=$(CURDIR)/include
export libsbi_dir=$(CURDIR)/lib/sbi
export libsbiutils_dir=$(CURDIR)/lib/utils
export firmware_dir=$(CURDIR)/firmware

# Setup variables for kconfig
ifdef PLATFORM
export PYTHONDONTWRITEBYTECODE=1
export KCONFIG_DIR=$(platform_build_dir)/kconfig
export KCONFIG_AUTOLIST=$(KCONFIG_DIR)/auto.list
export KCONFIG_AUTOHEADER=$(KCONFIG_DIR)/autoconf.h
export KCONFIG_AUTOCONFIG=$(KCONFIG_DIR)/auto.conf
export KCONFIG_AUTOCMD=$(KCONFIG_DIR)/auto.conf.cmd
export KCONFIG_CONFIG=$(KCONFIG_DIR)/.config
# Additional exports for include paths in Kconfig files
export OPENSBI_SRC_DIR=$(src_dir)
export OPENSBI_PLATFORM=$(PLATFORM)
export OPENSBI_PLATFORM_SRC_DIR=$(platform_src_dir)
endif

# Find library version
OPENSBI_VERSION_MAJOR=`grep "define OPENSBI_VERSION_MAJOR" $(include_dir)/sbi/sbi_version.h | sed 's/.*MAJOR.*\([0-9][0-9]*\)/\1/'`
OPENSBI_VERSION_MINOR=`grep "define OPENSBI_VERSION_MINOR" $(include_dir)/sbi/sbi_version.h | sed 's/.*MINOR.*\([0-9][0-9]*\)/\1/'`
OPENSBI_VERSION_GIT=$(shell if [ -d $(src_dir)/.git ]; then git describe 2> /dev/null; fi)

# Setup compilation commands
ifneq ($(LLVM),)
CC		=	clang
AR		=	llvm-ar
LD		=	ld.lld
OBJCOPY		=	llvm-objcopy
else
ifdef CROSS_COMPILE
CC		=	$(CROSS_COMPILE)gcc
AR		=	$(CROSS_COMPILE)ar
LD		=	$(CROSS_COMPILE)ld
OBJCOPY		=	$(CROSS_COMPILE)objcopy
else
CC		?=	gcc
AR		?=	ar
LD		?=	ld
OBJCOPY		?=	objcopy
endif
endif
CPP		=	$(CC) -E
AS		=	$(CC)
DTC		=	dtc

ifneq ($(shell $(CC) --version 2>&1 | head -n 1 | grep clang),)
CC_IS_CLANG	=	y
else
CC_IS_CLANG	=	n
endif

ifneq ($(shell $(LD) --version 2>&1 | head -n 1 | grep LLD),)
LD_IS_LLD	=	y
else
LD_IS_LLD	=	n
endif

ifeq ($(CC_IS_CLANG),y)
ifneq ($(CROSS_COMPILE),)
CLANG_TARGET	=	--target=$(notdir $(CROSS_COMPILE:%-=%))
endif
endif

# Guess the compiler's XLEN
OPENSBI_CC_XLEN := $(shell TMP=`$(CC) $(CLANG_TARGET) -dumpmachine | sed 's/riscv\([0-9][0-9]\).*/\1/'`; echo $${TMP})

# Guess the compiler's ABI and ISA
ifneq ($(CC_IS_CLANG),y)
OPENSBI_CC_ABI := $(shell TMP=`$(CC) -v 2>&1 | sed -n 's/.*\(with\-abi=\([a-zA-Z0-9]*\)\).*/\2/p'`; echo $${TMP})
OPENSBI_CC_ISA := $(shell TMP=`$(CC) -v 2>&1 | sed -n 's/.*\(with\-arch=\([a-zA-Z0-9]*\)\).*/\2/p'`; echo $${TMP})
endif

# Setup platform XLEN
ifndef PLATFORM_RISCV_XLEN
  ifeq ($(OPENSBI_CC_XLEN), 32)
    PLATFORM_RISCV_XLEN = 32
  else
    PLATFORM_RISCV_XLEN = 64
  endif
endif

ifeq ($(CC_IS_CLANG),y)
ifeq ($(CROSS_COMPILE),)
CLANG_TARGET	=	--target=riscv$(PLATFORM_RISCV_XLEN)-unknown-elf
endif
endif

ifeq ($(LD_IS_LLD),y)
RELAX_FLAG	=	-mno-relax
USE_LD_FLAG	=	-fuse-ld=lld
else
USE_LD_FLAG	=	-fuse-ld=bfd
endif

# Check whether the linker supports creating PIEs
OPENSBI_LD_PIE := $(shell $(CC) $(CLANG_TARGET) $(RELAX_FLAG) $(USE_LD_FLAG) -fPIE -nostdlib -Wl,-pie -x c /dev/null -o /dev/null >/dev/null 2>&1 && echo y || echo n)

# Check whether the linker supports --exclude-libs
OPENSBI_LD_EXCLUDE_LIBS := $(shell $(CC) $(CLANG_TARGET) $(RELAX_FLAG) $(USE_LD_FLAG) "-Wl,--exclude-libs,ALL" -x c /dev/null -o /dev/null >/dev/null 2>&1 && echo y || echo n)

# Check whether the compiler supports -m(no-)save-restore
CC_SUPPORT_SAVE_RESTORE := $(shell $(CC) $(CLANG_TARGET) $(RELAX_FLAG) -nostdlib -mno-save-restore -x c /dev/null -o /dev/null 2>&1 | grep -e "-save-restore" >/dev/null && echo n || echo y)

# Check whether the compiler supports -m(no-)strict-align
CC_SUPPORT_STRICT_ALIGN := $(shell $(CC) $(CLANG_TARGET) $(RELAX_FLAG) -nostdlib -mstrict-align -x c /dev/null -o /dev/null 2>&1 | grep -e "-mstrict-align\|-mno-unaligned-access" >/dev/null && echo n || echo y)

# Check whether the assembler and the compiler support the Zicsr and Zifencei extensions
CC_SUPPORT_ZICSR_ZIFENCEI := $(shell $(CC) $(CLANG_TARGET) $(RELAX_FLAG) -nostdlib -march=rv$(OPENSBI_CC_XLEN)imafd_zicsr_zifencei -x c /dev/null -o /dev/null 2>&1 | grep "zicsr\|zifencei" > /dev/null && echo n || echo y)

ifneq ($(OPENSBI_LD_PIE),y)
$(error Your linker does not support creating PIEs, opensbi requires this.)
endif

# Build Info:
# OPENSBI_BUILD_TIME_STAMP -- the compilation time stamp
# OPENSBI_BUILD_COMPILER_VERSION -- the compiler version info
BUILD_INFO ?= n
ifeq ($(BUILD_INFO),y)
OPENSBI_BUILD_DATE_FMT = +%Y-%m-%d %H:%M:%S %z
ifdef SOURCE_DATE_EPOCH
	OPENSBI_BUILD_TIME_STAMP ?= $(shell date -u -d "@$(SOURCE_DATE_EPOCH)" \
		"$(OPENSBI_BUILD_DATE_FMT)" 2>/dev/null || \
		date -u -r "$(SOURCE_DATE_EPOCH)" \
		"$(OPENSBI_BUILD_DATE_FMT)" 2>/dev/null || \
		date -u "$(OPENSBI_BUILD_DATE_FMT)")
else
	OPENSBI_BUILD_TIME_STAMP ?= $(shell date "$(OPENSBI_BUILD_DATE_FMT)")
endif
OPENSBI_BUILD_COMPILER_VERSION=$(shell $(CC) -v 2>&1 | grep ' version ' | \
	sed 's/[[:space:]]*$$//')
endif

# Setup list of objects.mk files
ifdef PLATFORM
platform-object-mks=$(shell if [ -d $(platform_src_dir)/ ]; then find $(platform_src_dir) -iname "objects.mk" | sort -r; fi)
endif
libsbi-object-mks=$(shell if [ -d $(libsbi_dir) ]; then find $(libsbi_dir) -iname "objects.mk" | sort -r; fi)
libsbiutils-object-mks=$(shell if [ -d $(libsbiutils_dir) ]; then find $(libsbiutils_dir) -iname "objects.mk" | sort -r; fi)
firmware-object-mks=$(shell if [ -d $(firmware_dir) ]; then find $(firmware_dir) -iname "objects.mk" | sort -r; fi)

# The "make all" rule should always be first rule
.PHONY: all
all:

# Include platform specific .config
ifdef PLATFORM
.PHONY: menuconfig
menuconfig: $(platform_src_dir)/Kconfig $(src_dir)/Kconfig
	$(CMD_PREFIX)mkdir -p $(KCONFIG_DIR)
	$(CMD_PREFIX)$(src_dir)/scripts/Kconfiglib/menuconfig.py $(src_dir)/Kconfig

.PHONY: savedefconfig
savedefconfig: $(platform_src_dir)/Kconfig $(src_dir)/Kconfig
	$(CMD_PREFIX)mkdir -p $(KCONFIG_DIR)
	$(CMD_PREFIX)$(src_dir)/scripts/Kconfiglib/savedefconfig.py --kconfig $(src_dir)/Kconfig --out $(KCONFIG_DIR)/defconfig

$(KCONFIG_CONFIG): $(platform_src_dir)/configs/$(PLATFORM_DEFCONFIG)
	$(CMD_PREFIX)mkdir -p $(KCONFIG_DIR)
	$(CMD_PREFIX)$(src_dir)/scripts/Kconfiglib/defconfig.py --kconfig $(src_dir)/Kconfig $(platform_src_dir)/configs/$(PLATFORM_DEFCONFIG)

$(KCONFIG_AUTOCONFIG): $(KCONFIG_CONFIG)
	$(CMD_PREFIX)$(src_dir)/scripts/Kconfiglib/genconfig.py --header-path $(KCONFIG_AUTOHEADER) --sync-deps $(KCONFIG_DIR) --file-list $(KCONFIG_AUTOLIST) $(src_dir)/Kconfig

$(KCONFIG_AUTOHEADER): $(KCONFIG_AUTOCONFIG);

$(KCONFIG_AUTOLIST): $(KCONFIG_AUTOCONFIG);

$(KCONFIG_AUTOCMD): $(KCONFIG_AUTOLIST)
	$(CMD_PREFIX)printf "%s: " $(KCONFIG_CONFIG) > $(KCONFIG_AUTOCMD)
	$(CMD_PREFIX)cat $(KCONFIG_AUTOLIST) | tr '\n' ' ' >> $(KCONFIG_AUTOCMD)

include $(KCONFIG_AUTOCONFIG)
include $(KCONFIG_AUTOCMD)
endif

# Include all objects.mk files
ifdef PLATFORM
include $(platform-object-mks)
endif
include $(libsbi-object-mks)
include $(libsbiutils-object-mks)
include $(firmware-object-mks)

# Setup list of objects
libsbi-objs-path-y=$(foreach obj,$(libsbi-objs-y),$(build_dir)/lib/sbi/$(obj))
ifdef PLATFORM
libsbiutils-objs-path-y=$(foreach obj,$(libsbiutils-objs-y),$(platform_build_dir)/lib/utils/$(obj))
platform-objs-path-y=$(foreach obj,$(platform-objs-y),$(platform_build_dir)/$(obj))
firmware-bins-path-y=$(foreach bin,$(firmware-bins-y),$(platform_build_dir)/firmware/$(bin))
endif
firmware-elfs-path-y=$(firmware-bins-path-y:.bin=.elf)
firmware-objs-path-y=$(firmware-bins-path-y:.bin=.o)

# Setup list of deps files for objects
deps-y=$(platform-objs-path-y:.o=.dep)
deps-y+=$(libsbi-objs-path-y:.o=.dep)
deps-y+=$(libsbiutils-objs-path-y:.o=.dep)
deps-y+=$(firmware-objs-path-y:.o=.dep)
deps-y+=$(firmware-elfs-path-y:=.dep)

# Setup platform ABI, ISA and Code Model
ifndef PLATFORM_RISCV_ABI
  ifneq ($(PLATFORM_RISCV_TOOLCHAIN_DEFAULT), 1)
    ifeq ($(PLATFORM_RISCV_XLEN), 32)
      PLATFORM_RISCV_ABI = ilp$(PLATFORM_RISCV_XLEN)
    else
      PLATFORM_RISCV_ABI = lp$(PLATFORM_RISCV_XLEN)
    endif
  else
    PLATFORM_RISCV_ABI = $(OPENSBI_CC_ABI)
  endif
endif
ifndef PLATFORM_RISCV_ISA
  ifneq ($(PLATFORM_RISCV_TOOLCHAIN_DEFAULT), 1)
    ifeq ($(CC_SUPPORT_ZICSR_ZIFENCEI), y)
      PLATFORM_RISCV_ISA = rv$(PLATFORM_RISCV_XLEN)imafdc_zicsr_zifencei
    else
      PLATFORM_RISCV_ISA = rv$(PLATFORM_RISCV_XLEN)imafdc
    endif
  else
    PLATFORM_RISCV_ISA = $(OPENSBI_CC_ISA)
  endif
endif
ifndef PLATFORM_RISCV_CODE_MODEL
  PLATFORM_RISCV_CODE_MODEL = medany
endif

# Setup install directories
ifdef INSTALL_INCLUDE_PATH
	install_include_path=$(INSTALL_INCLUDE_PATH)
else
	install_include_path=include
endif
ifdef INSTALL_LIB_PATH
	install_lib_path=$(INSTALL_LIB_PATH)
else
	ifneq ($(origin INSTALL_LIB_SUBDIR), undefined)
		install_lib_subdir=$(INSTALL_LIB_SUBDIR)
	else
		install_lib_subdir=$(PLATFORM_RISCV_ABI)
	endif
	install_lib_path=lib$(subst 32,,$(PLATFORM_RISCV_XLEN))/$(install_lib_subdir)
endif
ifdef INSTALL_FIRMWARE_PATH
	install_firmware_path=$(INSTALL_FIRMWARE_PATH)
else
	install_firmware_path=share/opensbi/$(PLATFORM_RISCV_ABI)
endif
ifdef INSTALL_DOCS_PATH
	install_docs_path=$(INSTALL_DOCS_PATH)
else
	install_docs_path=share/opensbi/docs
endif

# Setup compilation commands flags
ifeq ($(CC_IS_CLANG),y)
GENFLAGS	+=	$(CLANG_TARGET)
GENFLAGS	+=	-Wno-unused-command-line-argument
endif
GENFLAGS	+=	-I$(platform_src_dir)/include
GENFLAGS	+=	-I$(include_dir)
ifneq ($(OPENSBI_VERSION_GIT),)
GENFLAGS	+=	-DOPENSBI_VERSION_GIT="\"$(OPENSBI_VERSION_GIT)\""
endif
ifeq ($(BUILD_INFO),y)
GENFLAGS	+=	-DOPENSBI_BUILD_TIME_STAMP="\"$(OPENSBI_BUILD_TIME_STAMP)\""
GENFLAGS	+=	-DOPENSBI_BUILD_COMPILER_VERSION="\"$(OPENSBI_BUILD_COMPILER_VERSION)\""
endif
ifdef PLATFORM
GENFLAGS	+=	-include $(KCONFIG_AUTOHEADER)
endif
GENFLAGS	+=	$(libsbiutils-genflags-y)
GENFLAGS	+=	$(platform-genflags-y)
GENFLAGS	+=	$(firmware-genflags-y)

CFLAGS		=	-g -Wall -Werror -ffreestanding -nostdlib -fno-stack-protector -fno-strict-aliasing
ifneq ($(DEBUG),)
CFLAGS		+=	-O0
else
CFLAGS		+=	-O2
endif
CFLAGS		+=	-fno-omit-frame-pointer -fno-optimize-sibling-calls
# Optionally supported flags
ifeq ($(CC_SUPPORT_SAVE_RESTORE),y)
CFLAGS		+=	-mno-save-restore
endif
ifeq ($(CC_SUPPORT_STRICT_ALIGN),y)
CFLAGS		+=	-mstrict-align
endif
CFLAGS		+=	-mabi=$(PLATFORM_RISCV_ABI) -march=$(PLATFORM_RISCV_ISA)
CFLAGS		+=	-mcmodel=$(PLATFORM_RISCV_CODE_MODEL)
CFLAGS		+=	$(RELAX_FLAG)
CFLAGS		+=	$(GENFLAGS)
CFLAGS		+=	$(platform-cflags-y)
CFLAGS		+=	-fPIE -pie
CFLAGS		+=	$(firmware-cflags-y)

CPPFLAGS	+=	$(GENFLAGS)
CPPFLAGS	+=	$(platform-cppflags-y)
CPPFLAGS	+=	$(firmware-cppflags-y)

ASFLAGS		=	-g -Wall -nostdlib
ASFLAGS		+=	-fno-omit-frame-pointer -fno-optimize-sibling-calls
ASFLAGS		+=	-fPIE
# Optionally supported flags
ifeq ($(CC_SUPPORT_SAVE_RESTORE),y)
ASFLAGS		+=	-mno-save-restore
endif
ifeq ($(CC_SUPPORT_STRICT_ALIGN),y)
ASFLAGS		+=	-mstrict-align
endif
ASFLAGS		+=	-mabi=$(PLATFORM_RISCV_ABI) -march=$(PLATFORM_RISCV_ISA)
ASFLAGS		+=	-mcmodel=$(PLATFORM_RISCV_CODE_MODEL)
ASFLAGS		+=	$(RELAX_FLAG)
ifneq ($(CC_IS_CLANG),y)
ifneq ($(RELAX_FLAG),)
ASFLAGS		+=	-Wa,$(RELAX_FLAG)
endif
endif
ASFLAGS		+=	$(GENFLAGS)
ASFLAGS		+=	$(platform-asflags-y)
ASFLAGS		+=	$(firmware-asflags-y)

ARFLAGS		=	rcs

ELFFLAGS	+=	$(USE_LD_FLAG)
ifeq ($(OPENSBI_LD_EXCLUDE_LIBS),y)
ELFFLAGS	+=	-Wl,--exclude-libs,ALL
endif
ELFFLAGS	+=	-Wl,--build-id=none
ELFFLAGS	+=	-Wl,--no-dynamic-linker -Wl,-pie
ELFFLAGS	+=	$(platform-ldflags-y)
ELFFLAGS	+=	$(firmware-ldflags-y)

MERGEFLAGS	+=	-r
ifeq ($(LD_IS_LLD),y)
MERGEFLAGS	+=	-b elf
else
MERGEFLAGS	+=	-b elf$(PLATFORM_RISCV_XLEN)-littleriscv
endif
MERGEFLAGS	+=	-m elf$(PLATFORM_RISCV_XLEN)lriscv

DTSCPPFLAGS	=	$(CPPFLAGS) -nostdinc -nostdlib -fno-builtin -D__DTS__ -x assembler-with-cpp

# Setup functions for compilation
define dynamic_flags
-I$(shell dirname $(2)) -D__OBJNAME__=$(subst -,_,$(shell basename $(1) .o))
endef
merge_objs = $(CMD_PREFIX)mkdir -p `dirname $(1)`; \
	     echo " MERGE     $(subst $(build_dir)/,,$(1))"; \
	     $(LD) $(MERGEFLAGS) $(2) -o $(1)
merge_deps = $(CMD_PREFIX)mkdir -p `dirname $(1)`; \
	     echo " MERGE-DEP $(subst $(build_dir)/,,$(1))"; \
	     cat $(2) > $(1)
copy_file =  $(CMD_PREFIX)mkdir -p `dirname $(1)`; \
	     echo " COPY      $(subst $(build_dir)/,,$(1))"; \
	     cp -L -f $(2) $(1)
inst_file =  $(CMD_PREFIX)mkdir -p `dirname $(1)`; \
	     echo " INSTALL   $(subst $(install_root_dir)/,,$(1))"; \
	     cp -L -f $(2) $(1)
inst_file_list = $(CMD_PREFIX)if [ ! -z "$(4)" ]; then \
	     mkdir -p $(1)/$(3); \
	     for file in $(4) ; do \
	     rel_file=`echo $$file | sed -e 's@$(2)/$(subst $(install_firmware_path),platform,$(3))@@'`; \
	     dest_file=$(1)"/"$(3)"/"`echo $$rel_file`; \
	     dest_dir=`dirname $$dest_file`; \
	     echo " INSTALL   "$(3)"/"`echo $$rel_file`; \
	     mkdir -p $$dest_dir; \
	     cp -L -f $$file $$dest_file; \
	     done \
	     fi
inst_header_dir =  $(CMD_PREFIX)mkdir -p $(1); \
	     echo " INSTALL   $(subst $(install_root_dir)/,,$(1))"; \
	     cp -L -rf $(2) $(1)
compile_cpp_dep = $(CMD_PREFIX)mkdir -p `dirname $(1)`; \
	     echo " CPP-DEP   $(subst $(build_dir)/,,$(1))"; \
	     printf %s `dirname $(1)`/  > $(1) && \
	     $(CC) $(CPPFLAGS) -x c -MM $(3) \
	       -MT `basename $(1:.dep=$(2))` >> $(1) || rm -f $(1)
compile_cpp = $(CMD_PREFIX)mkdir -p `dirname $(1)`; \
	     echo " CPP       $(subst $(build_dir)/,,$(1))"; \
	     $(CPP) $(CPPFLAGS) -x c $(2) | grep -v "\#" > $(1)
compile_cc_dep = $(CMD_PREFIX)mkdir -p `dirname $(1)`; \
	     echo " CC-DEP    $(subst $(build_dir)/,,$(1))"; \
	     printf %s `dirname $(1)`/  > $(1) && \
	     $(CC) $(CFLAGS) $(call dynamic_flags,$(1),$(2))   \
	       -MM $(2) >> $(1) || rm -f $(1)
compile_cc = $(CMD_PREFIX)mkdir -p `dirname $(1)`; \
	     echo " CC        $(subst $(build_dir)/,,$(1))"; \
	     $(CC) $(CFLAGS) $(call dynamic_flags,$(1),$(2)) -c $(2) -o $(1)
compile_as_dep = $(CMD_PREFIX)mkdir -p `dirname $(1)`; \
	     echo " AS-DEP    $(subst $(build_dir)/,,$(1))"; \
	     printf %s `dirname $(1)`/ > $(1) && \
	     $(AS) $(ASFLAGS) $(call dynamic_flags,$(1),$(2)) \
	       -MM $(2) >> $(1) || rm -f $(1)
compile_as = $(CMD_PREFIX)mkdir -p `dirname $(1)`; \
	     echo " AS        $(subst $(build_dir)/,,$(1))"; \
	     $(AS) $(ASFLAGS) $(call dynamic_flags,$(1),$(2)) -c $(2) -o $(1)
compile_elf = $(CMD_PREFIX)mkdir -p `dirname $(1)`; \
	     echo " ELF       $(subst $(build_dir)/,,$(1))"; \
	     $(CC) $(CFLAGS) $(3) $(ELFFLAGS) -Wl,-T$(2) -o $(1)
compile_ar = $(CMD_PREFIX)mkdir -p `dirname $(1)`; \
	     echo " AR        $(subst $(build_dir)/,,$(1))"; \
	     $(AR) $(ARFLAGS) $(1) $(2)
compile_objcopy = $(CMD_PREFIX)mkdir -p `dirname $(1)`; \
	     echo " OBJCOPY   $(subst $(build_dir)/,,$(1))"; \
	     $(OBJCOPY) -S -O binary $(2) $(1)
compile_dts = $(CMD_PREFIX)mkdir -p `dirname $(1)`; \
	     echo " DTC       $(subst $(build_dir)/,,$(1))"; \
	     $(CPP) $(DTSCPPFLAGS) $(2) | $(DTC) -O dtb -i `dirname $(2)` -o $(1)
compile_d2c = $(CMD_PREFIX)mkdir -p `dirname $(1)`; \
	     echo " D2C       $(subst $(build_dir)/,,$(1))"; \
	     $(if $($(2)-varalign-$(3)),$(eval D2C_ALIGN_BYTES := $($(2)-varalign-$(3))),$(eval D2C_ALIGN_BYTES := $(4))) \
	     $(if $($(2)-varprefix-$(3)),$(eval D2C_NAME_PREFIX := $($(2)-varprefix-$(3))),$(eval D2C_NAME_PREFIX := $(5))) \
	     $(if $($(2)-padding-$(3)),$(eval D2C_PADDING_BYTES := $($(2)-padding-$(3))),$(eval D2C_PADDING_BYTES := 0)) \
	     $(src_dir)/scripts/d2c.sh -i $(6) -a $(D2C_ALIGN_BYTES) -p $(D2C_NAME_PREFIX) -t $(D2C_PADDING_BYTES) > $(1)
compile_carray = $(CMD_PREFIX)mkdir -p `dirname $(1)`; \
	     echo " CARRAY    $(subst $(build_dir)/,,$(1))"; \
	     $(eval CARRAY_VAR_LIST := $(carray-$(subst .c,,$(shell basename $(1)))-y)) \
	     $(src_dir)/scripts/carray.sh -i $(2) -l "$(CARRAY_VAR_LIST)" > $(1)
compile_gen_dep = $(CMD_PREFIX)mkdir -p `dirname $(1)`; \
	     echo " GEN-DEP   $(subst $(build_dir)/,,$(1))"; \
	     echo "$(1:.dep=$(2)): $(3)" >> $(1)

targets-y  = $(build_dir)/lib/libsbi.a
ifdef PLATFORM
targets-y += $(platform_build_dir)/lib/libplatsbi.a
endif
targets-y += $(firmware-bins-path-y)

# The default "make all" rule
.PHONY: all
all: $(targets-y)

# Preserve all intermediate files
.SECONDARY:

# Rules for lib/sbi sources
$(build_dir)/lib/libsbi.a: $(libsbi-objs-path-y)
	$(call compile_ar,$@,$^)

$(platform_build_dir)/lib/libplatsbi.a: $(libsbi-objs-path-y) $(libsbiutils-objs-path-y) $(platform-objs-path-y)
	$(call compile_ar,$@,$^)

$(build_dir)/%.dep: $(src_dir)/%.carray $(KCONFIG_AUTOHEADER)
	$(call compile_gen_dep,$@,.c,$< $(KCONFIG_AUTOHEADER))
	$(call compile_gen_dep,$@,.o,$(@:.dep=.c))

$(build_dir)/%.c: $(src_dir)/%.carray
	$(call compile_carray,$@,$<)

$(build_dir)/%.dep: $(src_dir)/%.c $(KCONFIG_AUTOHEADER)
	$(call compile_cc_dep,$@,$<)

$(build_dir)/%.o: $(src_dir)/%.c
	$(call compile_cc,$@,$<)

$(build_dir)/%.o: $(build_dir)/%.c
	$(call compile_cc,$@,$<)

ifeq ($(BUILD_INFO),y)
$(build_dir)/lib/sbi/sbi_init.o: $(libsbi_dir)/sbi_init.c FORCE
	$(call compile_cc,$@,$<)
endif

$(build_dir)/%.dep: $(src_dir)/%.S $(KCONFIG_AUTOHEADER)
	$(call compile_as_dep,$@,$<)

$(build_dir)/%.o: $(src_dir)/%.S
	$(call compile_as,$@,$<)

# Rules for platform sources
$(platform_build_dir)/%.dep: $(platform_src_dir)/%.carray $(KCONFIG_AUTOHEADER)
	$(call compile_gen_dep,$@,.c,$< $(KCONFIG_AUTOHEADER))
	$(call compile_gen_dep,$@,.o,$(@:.dep=.c))

$(platform_build_dir)/%.c: $(platform_src_dir)/%.carray
	$(call compile_carray,$@,$<)

$(platform_build_dir)/%.dep: $(platform_src_dir)/%.c $(KCONFIG_AUTOHEADER)
	$(call compile_cc_dep,$@,$<)

$(platform_build_dir)/%.o: $(platform_src_dir)/%.c $(KCONFIG_AUTOHEADER)
	$(call compile_cc,$@,$<)

$(platform_build_dir)/%.dep: $(platform_src_dir)/%.S
	$(call compile_as_dep,$@,$<)

$(platform_build_dir)/%.o: $(platform_src_dir)/%.S
	$(call compile_as,$@,$<)

$(platform_build_dir)/%.dep: $(platform_src_dir)/%.dts $(KCONFIG_AUTOHEADER)
	$(call compile_gen_dep,$@,.dtb,$< $(KCONFIG_AUTOHEADER))
	$(call compile_gen_dep,$@,.c,$(@:.dep=.dtb))
	$(call compile_gen_dep,$@,.o,$(@:.dep=.c))

$(platform_build_dir)/%.c: $(platform_build_dir)/%.dtb
	$(call compile_d2c,$@,platform,$(subst .dtb,.o,$(subst /,-,$(subst $(platform_build_dir)/,,$<))),16,dt,$<)

$(platform_build_dir)/%.dtb: $(platform_src_dir)/%.dts
	$(call compile_dts,$@,$<)

# Rules for lib/utils and firmware sources
$(platform_build_dir)/%.bin: $(platform_build_dir)/%.elf
	$(call compile_objcopy,$@,$<)

$(platform_build_dir)/%.elf: $(platform_build_dir)/%.o $(platform_build_dir)/%.elf.ld $(platform_build_dir)/lib/libplatsbi.a
	$(call compile_elf,$@,$@.ld,$< $(platform_build_dir)/lib/libplatsbi.a)

$(platform_build_dir)/%.dep: $(src_dir)/%.ldS $(KCONFIG_AUTOHEADER)
	$(call compile_cpp_dep,$@,.ld,$<)

$(platform_build_dir)/%.ld: $(src_dir)/%.ldS
	$(call compile_cpp,$@,$<)

$(platform_build_dir)/%.dep: $(src_dir)/%.carray $(KCONFIG_AUTOHEADER)
	$(call compile_gen_dep,$@,.c,$< $(KCONFIG_AUTOHEADER))
	$(call compile_gen_dep,$@,.o,$(@:.dep=.c))

$(platform_build_dir)/%.c: $(src_dir)/%.carray
	$(call compile_carray,$@,$<)

$(platform_build_dir)/%.dep: $(src_dir)/%.c $(KCONFIG_AUTOHEADER)
	$(call compile_cc_dep,$@,$<)

$(platform_build_dir)/%.o: $(src_dir)/%.c
	$(call compile_cc,$@,$<)

$(platform_build_dir)/%.dep: $(src_dir)/%.S $(KCONFIG_AUTOHEADER)
	$(call compile_as_dep,$@,$<)

$(platform_build_dir)/%.o: $(src_dir)/%.S
	$(call compile_as,$@,$<)

# Rule for "make docs"
$(build_dir)/docs/latex/refman.pdf: $(build_dir)/docs/latex/refman.tex
	$(CMD_PREFIX)mkdir -p $(build_dir)/docs
	$(CMD_PREFIX)$(MAKE) -C $(build_dir)/docs/latex
$(build_dir)/docs/latex/refman.tex: $(build_dir)/docs/doxygen.cfg
	$(CMD_PREFIX)mkdir -p $(build_dir)/docs
	$(CMD_PREFIX)doxygen $(build_dir)/docs/doxygen.cfg
$(build_dir)/docs/doxygen.cfg: $(src_dir)/docs/doxygen.cfg
	$(CMD_PREFIX)mkdir -p $(build_dir)/docs
	$(CMD_PREFIX)cat docs/doxygen.cfg | sed -e "s#@@SRC_DIR@@#$(src_dir)#" -e "s#@@BUILD_DIR@@#$(build_dir)#" -e "s#@@OPENSBI_MAJOR@@#$(OPENSBI_VERSION_MAJOR)#" -e "s#@@OPENSBI_MINOR@@#$(OPENSBI_VERSION_MINOR)#" > $(build_dir)/docs/doxygen.cfg
.PHONY: docs
docs: $(build_dir)/docs/latex/refman.pdf

# Dependency files should only be included after default Makefile rules
# They should not be included for any "xxxconfig" or "xxxclean" rule
all-deps-1 = $(if $(findstring config,$(MAKECMDGOALS)),,$(deps-y))
all-deps-2 = $(if $(findstring clean,$(MAKECMDGOALS)),,$(all-deps-1))
-include $(all-deps-2)

# Include external dependency of firmwares after default Makefile rules
include $(src_dir)/firmware/external_deps.mk

# Convenient "make run" command for emulated platforms
.PHONY: run
run: all
ifneq ($(platform-runcmd),)
	$(platform-runcmd) $(RUN_ARGS)
else
ifdef PLATFORM
	@echo "Platform $(PLATFORM) doesn't specify a run command"
	@false
else
	@echo Run command only available when targeting a platform
	@false
endif
endif

install_targets-y  = install_libsbi
ifdef PLATFORM
install_targets-y += install_libplatsbi
install_targets-y += install_firmwares
endif

# Rule for "make install"
.PHONY: install
install: $(install_targets-y)

.PHONY: install_libsbi
install_libsbi: $(build_dir)/lib/libsbi.a
	$(call inst_header_dir,$(install_root_dir)/$(install_include_path),$(include_dir)/sbi)
	$(call inst_file,$(install_root_dir)/$(install_lib_path)/libsbi.a,$(build_dir)/lib/libsbi.a)

.PHONY: install_libplatsbi
install_libplatsbi: $(platform_build_dir)/lib/libplatsbi.a $(build_dir)/lib/libsbi.a
	$(call inst_file,$(install_root_dir)/$(install_lib_path)/opensbi/$(platform_subdir)/lib/libplatsbi.a,$(platform_build_dir)/lib/libplatsbi.a)

.PHONY: install_firmwares
install_firmwares: $(platform_build_dir)/lib/libplatsbi.a $(build_dir)/lib/libsbi.a $(firmware-bins-path-y)
	$(call inst_file_list,$(install_root_dir),$(build_dir),$(install_firmware_path)/$(platform_subdir)/firmware,$(firmware-elfs-path-y))
	$(call inst_file_list,$(install_root_dir),$(build_dir),$(install_firmware_path)/$(platform_subdir)/firmware,$(firmware-bins-path-y))

.PHONY: install_docs
install_docs: $(build_dir)/docs/latex/refman.pdf
	$(call inst_file,$(install_root_dir)/$(install_docs_path)/refman.pdf,$(build_dir)/docs/latex/refman.pdf)

.PHONY: cscope
cscope:
	$(CMD_PREFIX)find \
		"$(src_dir)/firmware" \
		"$(src_dir)/include" \
		"$(src_dir)/lib" \
		"$(platform_src_dir)" \
	-name "*.[chS]" -print > cscope.files
	$(CMD_PREFIX)echo "$(KCONFIG_AUTOHEADER)" >> cscope.files
	$(CMD_PREFIX)cscope -bkq -i cscope.files -f cscope.out

# Rule for "make clean"
.PHONY: clean
clean:
	$(CMD_PREFIX)mkdir -p $(build_dir)
	$(if $(V), @echo " RM        $(build_dir)/*.o")
	$(CMD_PREFIX)find $(build_dir) -type f -name "*.o" -exec rm -rf {} +
	$(if $(V), @echo " RM        $(build_dir)/*.a")
	$(CMD_PREFIX)find $(build_dir) -type f -name "*.a" -exec rm -rf {} +
	$(if $(V), @echo " RM        $(build_dir)/*.elf")
	$(CMD_PREFIX)find $(build_dir) -type f -name "*.elf" -exec rm -rf {} +
	$(if $(V), @echo " RM        $(build_dir)/*.bin")
	$(CMD_PREFIX)find $(build_dir) -type f -name "*.bin" -exec rm -rf {} +
	$(if $(V), @echo " RM        $(build_dir)/*.dtb")
	$(CMD_PREFIX)find $(build_dir) -type f -name "*.dtb" -exec rm -rf {} +

# Rule for "make distclean"
.PHONY: distclean
distclean: clean
	$(CMD_PREFIX)mkdir -p $(build_dir)
	$(if $(V), @echo " RM        $(build_dir)/*.dep")
	$(CMD_PREFIX)find $(build_dir) -type f -name "*.dep" -exec rm -rf {} +
ifeq ($(build_dir),$(CURDIR)/build)
	$(if $(V), @echo " RM        $(build_dir)")
	$(CMD_PREFIX)rm -rf $(build_dir)
endif
ifeq ($(install_root_dir),$(install_root_dir_default)/usr)
	$(if $(V), @echo " RM        $(install_root_dir_default)")
	$(CMD_PREFIX)rm -rf $(install_root_dir_default)
endif
	$(if $(V), @echo " RM        $(src_dir)/cscope*")
	$(CMD_PREFIX)rm -f $(src_dir)/cscope*

.PHONY: FORCE
FORCE: