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#
# Makefile for Broadcom BCM947XX boards
#
# Copyright 2001-2003, Broadcom Corporation
# All Rights Reserved.
#
# THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY
# KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM
# SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
# FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE.
#
# Copyright 2004 Manuel Novoa III <mjn3@codepoet.org>
# Modified to support bzip'd kernels.
# Of course, it would be better to integrate bunzip capability into CFE.
#
# Copyright 2005 Oleg I. Vdovikin <oleg@cs.msu.su>
# Cleaned up, modified for lzma support, removed from kernel
#
# Copyright 2007 Gabor Juhos <juhosg at openwrt.org>
# Modified to support user defined entry point address.
# Added support for make targets with different names
#
LOADADDR := 0x80001000
LZMA_TEXT_START := 0x80500000
LZMA_STARTUP_ORG:= 0
LOADER_DATA :=
CONFIG_PASS_KARGS :=
CONFIG_BOARD :=
CC := $(CROSS_COMPILE)gcc
LD := $(CROSS_COMPILE)ld
OBJCOPY := $(CROSS_COMPILE)objcopy
OBJDUMP := $(CROSS_COMPILE)objdump
BIN_FLAGS := -O binary -R .reginfo -R .note -R .comment -R .mdebug -S
CFLAGS = -D__KERNEL__ -Wall -Wstrict-prototypes -Wno-trigraphs -Os \
-fno-strict-aliasing -fno-common -fomit-frame-pointer -G 0 -mno-abicalls -fno-pic \
-ffunction-sections -pipe -mlong-calls -fno-common \
-ffreestanding \
-mabi=32 -march=mips32 -Wa,-32 -Wa,-march=mips32 -Wa,-mips32 -Wa,--trap
CFLAGS += -DLOADADDR=$(LOADADDR)
ASFLAGS = $(CFLAGS) -D__ASSEMBLY__ -DLZMA_STARTUP_ORG=$(LZMA_STARTUP_ORG)
LDFLAGS = -static --gc-sections -no-warn-mismatch
LDFLAGS += -e startup -T loader.lds -Ttext $(LZMA_TEXT_START)
O_FORMAT = $(shell $(OBJDUMP) -i | head -2 | grep elf32)
OBJECTS := head.o decompress.o board.o printf.o LzmaDecode.o
ifneq ($(strip $(LOADER_DATA)),)
OBJECTS += data.o
CFLAGS += -DLZMA_WRAPPER=1
else
CFLAGS += -D_LZMA_IN_CB
endif
ifneq ($(strip $(CONFIG_PASS_KARGS)),)
CFLAGS += -DCONFIG_PASS_KARGS
endif
BOARD_DEF := $(strip $(CONFIG_BOARD))
BOARD_DEF := $(shell echo $(BOARD_DEF) | tr a-z A-Z | tr -d -)
ifneq ($(BOARD_DEF),)
CFLAGS += -DCONFIG_BOARD_$(BOARD_DEF)
endif
all: loader.bin
# Don't build dependencies, this may die if $(CC) isn't gcc
dep:
install:
%.o : %.c
$(CC) $(CFLAGS) -c -o $@ $<
%.o : %.S
$(CC) $(ASFLAGS) -c -o $@ $<
data.o: $(LOADER_DATA)
$(LD) -r -b binary --oformat $(O_FORMAT) -T lzma-data.lds -o $@ $<
loader.bin: loader.elf
$(OBJCOPY) $(BIN_FLAGS) $< $@
loader.elf: $(OBJECTS)
$(LD) $(LDFLAGS) -o $@ $(OBJECTS)
mrproper: clean
clean:
rm -f *.elf *.bin *.o
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