]>
Commit | Line | Data |
---|---|---|
bbb0b128 SG |
1 | # |
2 | # Copyright (c) 2011 The Chromium OS Authors. | |
3 | # | |
1a459660 | 4 | # SPDX-License-Identifier: GPL-2.0+ |
bbb0b128 SG |
5 | # |
6 | ||
7 | # This Makefile builds the internal U-Boot fdt if CONFIG_OF_CONTROL is | |
8 | # enabled. See doc/README.fdt-control for more details. | |
9 | ||
c8391a0e SW |
10 | DTS_INCDIRS = $(SRCTREE)/board/$(VENDOR)/$(BOARD)/dts |
11 | DTS_INCDIRS += $(SRCTREE)/board/$(VENDOR)/dts | |
12 | DTS_INCDIRS += $(SRCTREE)/arch/$(ARCH)/dts | |
13 | ||
f53932ad | 14 | DTS_CPPFLAGS := -x assembler-with-cpp -undef -D__DTS__ \ |
c8391a0e SW |
15 | -nostdinc $(addprefix -I,$(DTS_INCDIRS)) |
16 | ||
17 | DTC_FLAGS := -R 4 -p 0x1000 \ | |
18 | $(addprefix -i ,$(DTS_INCDIRS)) | |
bbb0b128 | 19 | |
bbb0b128 SG |
20 | # Use a constant name for this so we can access it from C code. |
21 | # objcopy doesn't seem to allow us to set the symbol name independently of | |
22 | # the filename. | |
9e414032 | 23 | DT_BIN := $(obj)/dt.dtb |
bbb0b128 | 24 | |
efcf8619 MY |
25 | DEVICE_TREE ?= $(CONFIG_DEFAULT_DEVICE_TREE:"%"=%) |
26 | ifeq ($(DEVICE_TREE),) | |
27 | $(DT_BIN): FORCE | |
28 | echo >&2 "Please define CONFIG_DEFAULT_DEVICE_TREE in your board header file" | |
29 | else | |
bbb0b128 | 30 | $(DT_BIN): $(TOPDIR)/board/$(VENDOR)/dts/$(DEVICE_TREE).dts |
32ac4bd9 | 31 | $(CPP) $(DTS_CPPFLAGS) $< -o $(DT_BIN).dts.tmp |
c8391a0e | 32 | $(DTC) $(DTC_FLAGS) -O dtb -o ${DT_BIN} $(DT_BIN).dts.tmp |
efcf8619 | 33 | endif |
bbb0b128 SG |
34 | |
35 | process_lds = \ | |
36 | $(1) | sed -r -n 's/^OUTPUT_$(2)[ ("]*([^")]*).*/\1/p' | |
37 | ||
38 | # Run the compiler and get the link script from the linker | |
6825a95b | 39 | GET_LDS = $(CC) $(c_flags) $(ld_flags) -Wl,--verbose 2>&1 |
bbb0b128 | 40 | |
9e414032 | 41 | $(obj)/dt.o: $(DT_BIN) |
bbb0b128 SG |
42 | # We want the output format and arch. |
43 | # We also hope to win a prize for ugliest Makefile / shell interaction | |
44 | # We look in the LDSCRIPT first. | |
45 | # Then try the linker which should give us the answer. | |
46 | # Then check it worked. | |
a4ff4719 HK |
47 | [ -n "$(LDSCRIPT)" ] && \ |
48 | oformat=`$(call process_lds,cat $(LDSCRIPT),FORMAT)` && \ | |
49 | oarch=`$(call process_lds,cat $(LDSCRIPT),ARCH)` ;\ | |
bbb0b128 SG |
50 | \ |
51 | [ -z $${oformat} ] && \ | |
52 | oformat=`$(call process_lds,$(GET_LDS),FORMAT)` ;\ | |
53 | [ -z $${oarch} ] && \ | |
54 | oarch=`$(call process_lds,$(GET_LDS),ARCH)` ;\ | |
55 | \ | |
56 | [ -z $${oformat} ] && \ | |
57 | echo "Cannot read OUTPUT_FORMAT from lds file $(LDSCRIPT)" && \ | |
58 | exit 1 || true ;\ | |
59 | [ -z $${oarch} ] && \ | |
60 | echo "Cannot read OUTPUT_ARCH from lds file $(LDSCRIPT)" && \ | |
61 | exit 1 || true ;\ | |
62 | \ | |
63 | cd $(dir ${DT_BIN}) && \ | |
64 | $(OBJCOPY) -I binary -O $${oformat} -B $${oarch} \ | |
9e414032 | 65 | $(notdir ${DT_BIN}) $(notdir $@) |
bbb0b128 SG |
66 | rm $(DT_BIN) |
67 | ||
bcfe8fdf | 68 | obj-$(CONFIG_OF_EMBED) := dt.o |
bbb0b128 SG |
69 | |
70 | binary: $(DT_BIN) |