summaryrefslogtreecommitdiff
path: root/toolchain.inc
blob: eb1f0876bdb9299b8e98f5e873e497a7ad66a25d (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
##
## This file is part of the coreboot project.
##
## Copyright (C) 2014 Google Inc
##
## This program is free software; you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
## the Free Software Foundation; version 2 of the License.
##
## This program is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
## GNU General Public License for more details.
##

# ccache integration
ifeq ($(CONFIG_CCACHE),y)

CCACHE:=$(word 1,$(wildcard $(addsuffix /ccache,$(subst :, ,$(PATH)))))
ifeq ($(CCACHE),)
$(error ccache selected, but not found in PATH)
endif

export CCACHE_COMPILERCHECK=content
export CCACHE_BASEDIR=$(top)

$(foreach arch,$(ARCH_SUPPORTED), \
	$(eval CC_$(arch):=$(CCACHE) $(CC_$(arch))))

HOSTCC:=$(CCACHE) $(HOSTCC)
HOSTCXX:=$(CCACHE) $(HOSTCXX)
ROMCC=$(CCACHE) $(ROMCC_BIN)
endif

# scan-build integration
ifneq ($(CCC_ANALYZER_OUTPUT_FORMAT),)

ifeq ($(CCC_ANALYZER_ANALYSIS),)
export CCC_ANALYZER_ANALYSIS := -analyzer-opt-analyze-headers
endif

$(foreach arch,$(ARCH_SUPPORTED), \
	$(eval CC_$(arch):=CCC_CC="$(CC_$(arch))" $(CC) ))

HOSTCC:=CCC_CC="$(HOSTCC)" $(CC)
HOSTCXX:=CCC_CXX="$(HOSTCXX)" $(CXX)
ROMCC=CCC_CC="$(ROMCC_BIN)" $(CC)
endif

COREBOOT_STANDARD_STAGES := bootblock libverstage verstage romstage ramstage
MAP-libverstage := verstage

ARCHDIR-i386	:= x86
ARCHDIR-x86_32	:= x86
ARCHDIR-x86_64	:= x86
ARCHDIR-arm	:= arm
ARCHDIR-arm64	:= arm64
ARCHDIR-riscv	:= riscv
ARCHDIR-mips	:= mips

CFLAGS_arm	+=
CFLAGS_arm64	+= -mgeneral-regs-only
CFLAGS_mips	+= -mips32r2 -G 0 -mno-abicalls -fno-pic
CFLAGS_riscv	+=
CFLAGS_x86_32	+=
CFLAGS_x86_64	+= -mcmodel=large -mno-red-zone

# Some boards only provide 2K stacks, so storing lots of data there leads to
# problems. Since C rules don't allow us to statically determine the maximum
# stack use, we use 1.5K as heuristic, assuming that we typically have lots
# of tiny stack frames and the odd large one.
#
# Store larger buffers in BSS, use MAYBE_STATIC to share code with __PRE_RAM__
# on x86.
# Since GCCs detection of dynamic array bounds unfortunately seems to be
# very basic, you'll sometimes have to use a static upper bound for the
# size and an assert() to make sure it's honored (see gpio_base3_value()
# for an example).
# (If you absolutely need a larger stack frame and are 100% sure it cannot
# cause problems, you can whitelist it with #pragma diagnostic.)
CFLAGS_arm	+= -Wstack-usage=1536
CFLAGS_arm64	+= -Wstack-usage=1536
CFLAGS_mips	+= -Wstack-usage=1536
CFLAGS_riscv	+= -Wstack-usage=1536

toolchain_to_dir = \
	$(foreach arch,$(ARCH_SUPPORTED),\
	$(eval CPPFLAGS_$(arch) += \
	-Isrc/arch/$(ARCHDIR-$(arch))/include))

# set_stage_toolchain: Decides the toolchain to be used by every stage
# E.g.: If bootblock is x86_32, it sets ARCH-BOOTBLOCK-y = x86_32, whereas
# ARCH-BOOTBLOCK-n = armv7. Then, ARCH-BOOTBLOCK-y can be used anywhere to
# decide the compiler toolchain for bootblock stage
# This step is essential for initializing the toolchain for coreboot standard
# stages i.e. bootblock, romstage and ramstage, since it acts as the second
# parameter to create_class_compiler below in init_standard_toolchain
map_stage = $(strip $(if $(MAP-$(1)),$(MAP-$(1)),$(1)))
set_stage_toolchain= \
	$(foreach arch,$(ARCH_SUPPORTED), \
	$(eval ARCH-$(1)-$($(shell \
		echo CONFIG_ARCH_$(call map_stage,$(1))_$(arch) | \
		tr '[:lower:]' '[:upper:]')) := $(arch)))

# create_class_compiler: Used to create compiler tool set for
# special classes
# @1: special class
# @2: compiler set to be used
# e.g.: smm special class uses i386 as compiler set
define create_class_compiler
$(if $(2),,$(error building $(1) without the required toolchain))
CC_$(1) := $(CC_$(2))
LD_$(1) := $(LD_$(2))
NM_$(1) := $(NM_$(2))
AR_$(1) := $(AR_$(2))
OBJCOPY_$(1) := $(OBJCOPY_$(2))
OBJDUMP_$(1) := $(OBJDUMP_$(2))
STRIP_$(1) := $(STRIP_$(2))
READELF_$(1) := $(READELF_$(2))
CFLAGS_$(1) = $$(CFLAGS_common) $$(CFLAGS_$(2))
CPPFLAGS_$(1) = $$(CPPFLAGS_common) $$(CPPFLAGS_$(2)) -D__ARCH_$(2)__
COMPILER_RT_$(1) := $$(COMPILER_RT_$(2))
COMPILER_RT_FLAGS_$(1) := $$(COMPILER_RT_FLAGS_$(2))
LDFLAGS_$(1) = $$(LDFLAGS_common) $$(LDFLAGS_$(2))
endef

# define_class: Allows defining any program as dynamic class and compiler tool
# set for the same based on the architecture for which the program is to be
# compiled
# @1: program (class name)
# @2: architecture for which the program needs to be compiled
# IMP: Ensure that define_class is called before any .c or .S files are added to
# the class of the program. Check subdirs-y for order of subdirectory inclusions
define define_class
classes-y += $(1)
$(eval $(call create_class_compiler,$(1),$(2)))
endef

# initialize standard toolchain (CC,AS and others) for give stage
# @1 : stage for which the toolchain is to be initialized
init_standard_toolchain = \
	$(eval $(call set_stage_toolchain,$(1))) \
	$(eval $(call create_class_compiler,$(1),$(ARCH-$(1)-y)))

init_stages = \
	$(foreach stage,$(COREBOOT_STANDARD_STAGES), \
	$(eval $(call init_standard_toolchain,$(stage))))

$(eval $(call toolchain_to_dir))

$(call init_stages)

# Test for coreboot toolchain (except when explicitly not requested)
ifneq ($(NOCOMPILE),1)
# only run if we're doing a build (not for tests, kconfig, ...)
# rationale: gcc versions by Linux distributions tend to be quite messed up
# llvm/clang also needs patches supplied by the coreboot build
COMPILERFAIL:=0
IASLFAIL:=0

ifneq ($(CONFIG_ANY_TOOLCHAIN),y)
$(foreach arch,$(sort $(foreach stage,\
	$(COREBOOT_STANDARD_STAGES),$(ARCH-$(stage)-y))), \
	$(if $(shell if [ -n "$(CC_$(arch))" ]; then \
		$(CC_$(arch)) -v 2>&1 | grep -q "coreboot toolchain" || \
		echo not-coreboot; else echo not-coreboot; fi), \
		$(eval COMPILERFAIL:=1)\
		$(warning The coreboot toolchain for '$(arch)'\
			architecture was not found.)))
#if iasl doesn't match the current coreboot version, fail the test
#TODO: Figure out if iasl is even needed for the build.
$(if $(shell if [ -n "$(IASL)" ]; then \
	$(IASL) -v 2>&1 | grep -q "$(shell util/crossgcc/buildgcc -s iasl)" || \
	echo not-coreboot; else echo not-coreboot; fi), \
	$(eval COMPILERFAIL:=1)$(eval IASLFAIL:=1)\
	$(warning The coreboot toolchain version of iasl \
		'$(shell util/crossgcc/buildgcc -s iasl)' was not found))
else #$(CONFIG_ANY_TOOLCHAIN)
$(foreach arch,$(sort \
	$(foreach stage,$(COREBOOT_STANDARD_STAGES),$(ARCH-$(stage)-y))), \
	$(if $(CC_$(arch)),, $(eval COMPILERFAIL:=1) \
	$(warning No compiler found for '$(arch)' architecture. \
		Install one or use the coreboot toolchain?)) )
#if iasl isn't present, fail
#TODO: Figure out if iasl is even needed for the build.
$(if $(IASL),, $(eval COMPILERFAIL:=1)$(eval IASLFAIL:=1) \
	$(warning iasl not found. \
		Please install it or use the coreboot toolchain.))
endif
ifeq ($(COMPILERFAIL),1)
ifneq ($(XGCCPATH),)
$(warning )
$(warning Path to your toolchain is currently set to '$(XGCCPATH)')
endif
$(warning )
$(warning To build the entire coreboot toolchain: run 'make crossgcc')
ifeq ($(IASLFAIL),1)
$(warning To build just IASL: run 'make iasl')
endif #($(IASLFAIL),1)
$(warning For more toolchain build targets: run 'make help_toolchain')
$(warning )
ifneq ($(CONFIG_ANY_TOOLCHAIN),y)
$(warning To try to use any toolchain in your path, \
	run 'make menuconfig', then select)
$(warning the config option: 'General setup', \
	and 'Allow building with any toolchain')
$(warning Note that this is NOT supported.  \
	Using it means you're on your own.)
$(warning )
endif #($(CONFIG_ANY_TOOLCHAIN),y)
$(error Halting the build)
endif #($(COMPILERFAIL),1)

endif #($(NOCOMPILE),1)

ifneq ($(MAKECMDGOALS),)
ifneq ($(filter test-toolchain,$(MAKECMDGOALS)),)
$(foreach arch, $(ARCH_SUPPORTED), \
	$(if $(shell if [ -n "$(GCC_CC_$(arch))" ]; then \
		$(GCC_CC_$(arch)) -v 2>&1 | \
		grep -q "$(shell util/crossgcc/buildgcc -s gcc)" || \
		echo not-current; fi), \
		$(eval COMPILER_OUT_OF_DATE:=1) \
		$(warning The coreboot toolchain version of gcc for '$(arch)' \
			architecture is not the current version.)) \
	$(if $(shell if [ -n "$(CLANG_CC_$(arch))" ]; then \
		$(CLANG_CC_$(arch)) -v 2>&1 | \
		grep -q "$(shell util/crossgcc/buildgcc -s clang)" || \
		echo not-current; fi), \
		$(eval COMPILER_OUT_OF_DATE:=1)\
		$(warning The coreboot toolchain version of clang for \
			'$(arch)' architecture is not the current version.)) \
	$(if $(shell if [ "$(OBJDUMP_$(arch))" != "invalidobjdump" ]; then \
	$(OBJDUMP_$(arch)) -v 2>&1 | \
	grep -q "$(shell util/crossgcc/buildgcc -s binutils)" || \
	echo not-current; fi), \
		$(eval COMPILER_OUT_OF_DATE:=1)\
		$(warning The coreboot toolchain version of binutils for \
			'$(arch)' architecture is not the current version.)) \
)
$(if $(shell if [ -n "$(IASL)" ]; then $(IASL) -v 2>&1 | \
	grep -q "$(shell util/crossgcc/buildgcc -s iasl)" || \
	echo not-coreboot; fi), \
	$(eval COMPILER_OUT_OF_DATE:=1)\
	$(warning The coreboot toolchain version of iasl \
		is not the current version))
endif # ifneq ($(filter crossgcc_check%,$(MAKECMDGOALS)),)
endif # ifneq ($(MAKECMDGOALS),)