+#
+# SPDX-License-Identifier: GPL-2.0
+#
# Backward compatibility
asflags-y += $(EXTRA_AFLAGS)
ccflags-y += $(EXTRA_CFLAGS)
orig_c_flags = $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) $(KBUILD_SUBDIR_CCFLAGS) \
$(ccflags-y) $(CFLAGS_$(basetarget).o)
_c_flags = $(filter-out $(CFLAGS_REMOVE_$(basetarget).o), $(orig_c_flags))
-_a_flags = $(KBUILD_CPPFLAGS) $(KBUILD_AFLAGS) $(KBUILD_SUBDIR_ASFLAGS) \
+orig_a_flags = $(KBUILD_CPPFLAGS) $(KBUILD_AFLAGS) $(KBUILD_SUBDIR_ASFLAGS) \
$(asflags-y) $(AFLAGS_$(basetarget).o)
+_a_flags = $(filter-out $(AFLAGS_REMOVE_$(basetarget).o), $(orig_a_flags))
_cpp_flags = $(KBUILD_CPPFLAGS) $(cppflags-y) $(CPPFLAGS_$(@F))
#
$(CFLAGS_GCOV))
endif
+#
+# Enable address sanitizer flags for kernel except some files or directories
+# we don't want to check (depends on variables KASAN_SANITIZE_obj.o, KASAN_SANITIZE)
+#
+ifeq ($(CONFIG_KASAN),y)
+_c_flags += $(if $(patsubst n%,, \
+ $(KASAN_SANITIZE_$(basetarget).o)$(KASAN_SANITIZE)y), \
+ $(CFLAGS_KASAN))
+endif
+
# If building the kernel in a separate objtree expand all occurrences
# of -Idir to -I$(srctree)/dir except for absolute paths (starting with '/').
ld_flags = $(LDFLAGS) $(ldflags-y)
+# Try these files in order to find the U-Boot-specific .dtsi include file
+u_boot_dtsi_options = $(strip $(wildcard $(dir $<)$(basename $(notdir $<))-u-boot.dtsi) \
+ $(wildcard $(dir $<)$(subst $\",,$(CONFIG_SYS_SOC))-u-boot.dtsi) \
+ $(wildcard $(dir $<)$(subst $\",,$(CONFIG_SYS_CPU))-u-boot.dtsi) \
+ $(wildcard $(dir $<)$(subst $\",,$(CONFIG_SYS_VENDOR))-u-boot.dtsi) \
+ $(wildcard $(dir $<)u-boot.dtsi))
+
+u_boot_dtsi_options_raw = $(warning Automatic .dtsi inclusion: options: \
+ $(dir $<)$(basename $(notdir $<))-u-boot.dtsi \
+ $(dir $<)$(subst $\",,$(CONFIG_SYS_SOC))-u-boot.dtsi \
+ $(dir $<)$(subst $\",,$(CONFIG_SYS_CPU))-u-boot.dtsi \
+ $(dir $<)$(subst $\",,$(CONFIG_SYS_VENDOR))-u-boot.dtsi \
+ $(dir $<)u-boot.dtsi ... \
+ found: $(if $(u_boot_dtsi_options),"$(u_boot_dtsi_options)",nothing!))
+
+# Uncomment for debugging
+# This shows all the files that were considered and the one that we chose.
+# u_boot_dtsi_options_debug = $(u_boot_dtsi_options_raw)
+
+# We use the first match
+u_boot_dtsi = $(strip $(u_boot_dtsi_options_debug) \
+ $(notdir $(firstword $(u_boot_dtsi_options))))
+
# Modified for U-Boot
dtc_cpp_flags = -Wp,-MD,$(depfile).pre.tmp -nostdinc \
-I$(srctree)/arch/$(ARCH)/dts \
-I$(srctree)/arch/$(ARCH)/dts/include \
+ -Iinclude \
+ -I$(srctree)/include \
+ -I$(srctree)/arch/$(ARCH)/include \
+ -include $(srctree)/include/linux/kconfig.h \
+ -D__ASSEMBLY__ \
-undef -D__DTS__
# Finds the multi-part object the current object will be linked into
( \
echo '.section .dtb.init.rodata,"a"'; \
echo '.balign 16'; \
- echo '.global __dtb_$(*F)_begin'; \
- echo '__dtb_$(*F)_begin:'; \
+ echo '.global __dtb_$(subst -,_,$(*F))_begin'; \
+ echo '__dtb_$(subst -,_,$(*F))_begin:'; \
echo '.incbin "$<" '; \
- echo '__dtb_$(*F)_end:'; \
- echo '.global __dtb_$(*F)_end'; \
+ echo '__dtb_$(subst -,_,$(*F))_end:'; \
+ echo '.global __dtb_$(subst -,_,$(*F))_end'; \
echo '.balign 16'; \
) > $@
quiet_cmd_dtc = DTC $@
# Modified for U-Boot
-cmd_dtc = $(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \
- dtc -O dtb -o $@ -b 0 \
+# Bring in any U-Boot-specific include at the end of the file
+cmd_dtc = mkdir -p $(dir ${dtc-tmp}) ; \
+ (cat $<; $(if $(u_boot_dtsi),echo '\#include "$(u_boot_dtsi)"')) > $(pre-tmp); \
+ $(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $(pre-tmp) ; \
+ $(DTC) -O dtb -o $@ -b 0 \
-i $(dir $<) $(DTC_FLAGS) \
-d $(depfile).dtc.tmp $(dtc-tmp) ; \
cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile)
$(obj)/%.dtb: $(src)/%.dts FORCE
$(call if_changed_dep,dtc)
+pre-tmp = $(subst $(comma),_,$(dot-target).pre.tmp)
dtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp)
-# Helper targets for Installing DTBs into the boot directory
-quiet_cmd_dtb_install = INSTALL $<
- cmd_dtb_install = cp $< $(2)
+# DTCO
+# ---------------------------------------------------------------------------
+
+quiet_cmd_dtco = DTCO $@
+# Rule for objects only; does not put specific u-boot include at the end
+# No generation of assembly file either
+# Modified for U-Boot
+cmd_dtco = mkdir -p $(dir ${dtc-tmp}) ; \
+ $(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) - ; \
+ $(DTC) -@ -O dtb -o $@ -b 0 \
+ -i $(dir $<) $(DTC_FLAGS) \
+ -d $(depfile).dtc.tmp $(dtc-tmp) ; \
+ cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile)
+
+$(obj)/%.dtbo: $(src)/%.dts FORCE
+ $(call if_changed_dep,dtco)
+
+# Fonts
+# ---------------------------------------------------------------------------
+
+# Generate an assembly file to wrap the font data
+quiet_cmd_S_ttf= TTF $@
+# Modified for U-Boot
+cmd_S_ttf= \
+( \
+ echo '.section .rodata.ttf.init,"a"'; \
+ echo '.balign 16'; \
+ echo '.global __ttf_$(*F)_begin'; \
+ echo '__ttf_$(*F)_begin:'; \
+ echo '.incbin "$<" '; \
+ echo '__ttf_$(*F)_end:'; \
+ echo '.global __ttf_$(*F)_end'; \
+ echo '.balign 16'; \
+) > $@
+
+$(obj)/%.S: $(src)/%.ttf
+ $(call cmd,S_ttf)
+
+# EFI applications
+# A Makefile target *.efi is built as EFI application.
+# A Makefile target *_efi.S wraps *.efi as built-in EFI application.
+# ---------------------------------------------------------------------------
+
+# Generate an assembly file to wrap the EFI app
+cmd_S_efi= \
+( \
+ echo '.section .rodata.$*.init,"a"'; \
+ echo '.balign 16'; \
+ echo '.global __efi_$*_begin'; \
+ echo '__efi_$*_begin:'; \
+ echo '.incbin "$<" '; \
+ echo '__efi_$*_end:'; \
+ echo '.global __efi_$*_end'; \
+ echo '.balign 16'; \
+) > $@
+
+$(obj)/%_efi.S: $(obj)/%.efi
+ $(call cmd,S_efi)
-_dtbinst_pre_:
- $(Q)if [ -d $(INSTALL_DTBS_PATH).old ]; then rm -rf $(INSTALL_DTBS_PATH).old; fi
- $(Q)if [ -d $(INSTALL_DTBS_PATH) ]; then mv $(INSTALL_DTBS_PATH) $(INSTALL_DTBS_PATH).old; fi
- $(Q)mkdir -p $(INSTALL_DTBS_PATH)
+quiet_cmd_efi_objcopy = OBJCOPY $@
+cmd_efi_objcopy = $(OBJCOPY) -j .header -j .text -j .sdata -j .data -j \
+ .dynamic -j .dynsym -j .rel* -j .rela* -j .reloc \
+ $(if $(EFI_TARGET),$(EFI_TARGET),-O binary) $^ $@
-%.dtb_dtbinst_: $(obj)/%.dtb _dtbinst_pre_
- $(call cmd,dtb_install,$(INSTALL_DTBS_PATH))
+$(obj)/%.efi: $(obj)/%_efi.so
+ $(call cmd,efi_objcopy)
+
+quiet_cmd_efi_ld = LD $@
+cmd_efi_ld = $(LD) -nostdlib -znocombreloc -T $(EFI_LDS_PATH) -shared \
+ -Bsymbolic $^ -o $@
+
+EFI_LDS_PATH = $(srctree)/arch/$(ARCH)/lib/$(EFI_LDS)
+
+$(obj)/%_efi.so: $(obj)/%.o arch/$(ARCH)/lib/$(EFI_CRT0) \
+ arch/$(ARCH)/lib/$(EFI_RELOC)
+ $(call cmd,efi_ld)
+
+# ACPI
+# ---------------------------------------------------------------------------
+quiet_cmd_acpi_c_asl= ASL $<
+cmd_acpi_c_asl= \
+ $(CPP) -x assembler-with-cpp -D__ASSEMBLY__ -P $(UBOOTINCLUDE) -o $<.tmp $<; \
+ iasl -p $< -tc $<.tmp $(if $(KBUILD_VERBOSE:1=), >/dev/null) && \
+ mv $(patsubst %.asl,%.hex,$<) $@
+
+$(obj)/dsdt.c: $(src)/dsdt.asl
+ $(call cmd,acpi_c_asl)
# Bzip2
# ---------------------------------------------------------------------------
#
# mkimage
# ---------------------------------------------------------------------------
+MKIMAGEOUTPUT ?= /dev/null
quiet_cmd_mkimage = MKIMAGE $@
cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \
- $(if $(KBUILD_VERBOSE:1=), >/dev/null)
+ $(if $(KBUILD_VERBOSE:1=), >$(MKIMAGEOUTPUT))
+
+# fdtgrep
+# ---------------------------------------------------------------------------
+# Pass the original device tree file through fdtgrep twice. The first pass
+# removes any unwanted nodes (i.e. those which don't have the
+# 'u-boot,dm-pre-reloc' property and thus are not needed by SPL. The second
+# pass removes various unused properties from the remaining nodes.
+# The output is typically a much smaller device tree file.
+ifeq ($(CONFIG_TPL_BUILD),y)
+fdtgrep_props := -b u-boot,dm-pre-reloc -b u-boot,dm-tpl
+else
+fdtgrep_props := -b u-boot,dm-pre-reloc -b u-boot,dm-spl
+endif
+quiet_cmd_fdtgrep = FDTGREP $@
+ cmd_fdtgrep = $(objtree)/tools/fdtgrep $(fdtgrep_props) -RT $< \
+ -n /chosen -n /config -O dtb | \
+ $(objtree)/tools/fdtgrep -r -O dtb - -o $@ \
+ $(addprefix -P ,$(subst $\",,$(CONFIG_OF_SPL_REMOVE_PROPS)))
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