mirror of
https://github.com/openwrt/openwrt.git
synced 2025-02-06 19:19:31 +00:00
8d851a95b7
The text section in the ELF loader is aligned to the maximum page size, which defaults to 64KB. Reduce it to the actual page size to avoid wasting flash space for this alignment. Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
109 lines
2.7 KiB
Makefile
109 lines
2.7 KiB
Makefile
#
|
|
# Makefile for the LZMA compressed kernel loader for
|
|
# Atheros AR7XXX/AR9XXX based boards
|
|
#
|
|
# Copyright (C) 2011 Gabor Juhos <juhosg@openwrt.org>
|
|
#
|
|
# Some parts of this file was based on the OpenWrt specific lzma-loader
|
|
# for the BCM47xx and ADM5120 based boards:
|
|
# Copyright (C) 2004 Manuel Novoa III (mjn3@codepoet.org)
|
|
# Copyright (C) 2005 Mineharu Takahara <mtakahar@yahoo.com>
|
|
# Copyright (C) 2005 by Oleg I. Vdovikin <oleg@cs.msu.su>
|
|
#
|
|
# This program is free software; you can redistribute it and/or modify it
|
|
# under the terms of the GNU General Public License version 2 as published
|
|
# by the Free Software Foundation.
|
|
#
|
|
|
|
LOADADDR :=
|
|
LZMA_TEXT_START := 0x80a00000
|
|
LOADER_DATA :=
|
|
BOARD :=
|
|
FLASH_OFFS :=
|
|
FLASH_MAX :=
|
|
|
|
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 \
|
|
-R .MIPS.abiflags -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 -fhonour-copts -nostartfiles \
|
|
-mabi=32 -march=mips32r2 \
|
|
-Wa,-32 -Wa,-march=mips32r2 -Wa,-mips32r2 -Wa,--trap
|
|
CFLAGS += -D_LZMA_PROB32
|
|
CFLAGS += -flto
|
|
|
|
ASFLAGS = $(CFLAGS) -D__ASSEMBLY__
|
|
|
|
LDFLAGS = -static -Wl,--gc-sections -Wl,-no-warn-mismatch
|
|
LDFLAGS += -Wl,-e,startup -T loader.lds -Wl,-Ttext,$(LZMA_TEXT_START)
|
|
LDFLAGS += -flto -fwhole-program
|
|
|
|
O_FORMAT = $(shell $(OBJDUMP) -i | head -2 | grep elf32)
|
|
|
|
OBJECTS := head.o loader.o cache.o board.o printf.o LzmaDecode.o
|
|
|
|
ifneq ($(strip $(LOADER_DATA)),)
|
|
OBJECTS += data.o
|
|
CFLAGS += -DLZMA_WRAPPER=1 -DLOADADDR=$(LOADADDR)
|
|
endif
|
|
|
|
ifneq ($(strip $(KERNEL_CMDLINE)),)
|
|
CFLAGS += -DCONFIG_KERNEL_CMDLINE='"$(KERNEL_CMDLINE)"'
|
|
endif
|
|
|
|
ifneq ($(strip $(FLASH_OFFS)),)
|
|
CFLAGS += -DCONFIG_FLASH_OFFS=$(FLASH_OFFS)
|
|
endif
|
|
|
|
ifneq ($(strip $(FLASH_MAX)),)
|
|
CFLAGS += -DCONFIG_FLASH_MAX=$(FLASH_MAX)
|
|
endif
|
|
|
|
BOARD_DEF := $(shell echo $(strip $(BOARD)) | tr a-z A-Z | tr - _)
|
|
ifneq ($(BOARD_DEF),)
|
|
CFLAGS += -DCONFIG_BOARD_$(BOARD_DEF)
|
|
endif
|
|
|
|
all: loader.elf
|
|
|
|
# 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: $(OBJECTS)
|
|
$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(OBJECTS)
|
|
|
|
loader.bin: loader
|
|
$(OBJCOPY) $(BIN_FLAGS) $< $@
|
|
|
|
loader2.o: loader.bin
|
|
$(LD) -r -b binary --oformat $(O_FORMAT) -o $@ $<
|
|
|
|
loader.elf: loader2.o
|
|
$(LD) -z max-page-size=0x1000 -e startup -T loader2.lds -Ttext $(LOADADDR) -o $@ $<
|
|
|
|
mrproper: clean
|
|
|
|
clean:
|
|
rm -f loader *.elf *.bin *.o
|
|
|
|
|
|
|