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https://github.com/team-infusion-developers/android_kernel_samsung_msm8976.git
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8a76baf020
Compute the vmlinux size at runtime. Use Z_FULL_FLUSH instead of Z_FINISH, to extract only the ELF header and ELF program header. ->p_memsz is the required memory range for the executable, including bss ->p_filesz is the size of .text, .data and other runtime sections These values must be used for the claim call. All additional memory needed by the kernel is claimed in prom_init, remove the extra Mb. Pass the full memsize as target area to gunzip, otherwise not everything will be uncompressed. flush_cache has to flush all runtime sections, do not reduce the memrange by the ->p_offset value because its just that: an offset. Remove the Makefile code to produce an imagesize.c, its not needed anymore. Remove all FORCE flags, to not rebuild the zImage if vmlinux was not changed. Signed-off-by: Olaf Hering <olh@suse.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Anton Blanchard <anton@samba.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
148 lines
5.5 KiB
Makefile
148 lines
5.5 KiB
Makefile
# Makefile for making ELF bootable images for booting on CHRP
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# using Open Firmware.
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#
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# Geert Uytterhoeven September 1997
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#
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# Based on coffboot by Paul Mackerras
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# Simplified for ppc64 by Todd Inglett
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#
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# NOTE: this code is built for 32 bit in ELF32 format even though
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# it packages a 64 bit kernel. We do this to simplify the
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# bootloader and increase compatibility with OpenFirmware.
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#
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# To this end we need to define BOOTCC, etc, as the tools
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# needed to build the 32 bit image. These are normally HOSTCC,
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# but may be a third compiler if, for example, you are cross
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# compiling from an intel box. Once the 64bit ppc gcc is
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# stable it will probably simply be a compiler switch to
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# compile for 32bit mode.
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# To make it easier to setup a cross compiler,
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# CROSS32_COMPILE is setup as a prefix just like CROSS_COMPILE
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# in the toplevel makefile.
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HOSTCC := gcc
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BOOTCFLAGS := $(HOSTCFLAGS) -fno-builtin -nostdinc -isystem $(shell $(CROSS32CC) -print-file-name=include)
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BOOTAFLAGS := -D__ASSEMBLY__ $(BOOTCFLAGS) -traditional -nostdinc
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BOOTLFLAGS := -Ttext 0x00400000 -e _start -T $(srctree)/$(src)/zImage.lds
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OBJCOPYFLAGS := contents,alloc,load,readonly,data
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zlib := infblock.c infcodes.c inffast.c inflate.c inftrees.c infutil.c
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zlibheader := infblock.h infcodes.h inffast.h inftrees.h infutil.h
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zliblinuxheader := zlib.h zconf.h zutil.h
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$(addprefix $(obj)/,$(zlib) main.o): $(addprefix $(obj)/,$(zliblinuxheader)) $(addprefix $(obj)/,$(zlibheader))
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#$(addprefix $(obj)/,main.o): $(addprefix $(obj)/,zlib.h)
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src-boot := crt0.S string.S prom.c main.c div64.S
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src-boot += $(zlib)
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src-boot := $(addprefix $(obj)/, $(src-boot))
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obj-boot := $(addsuffix .o, $(basename $(src-boot)))
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BOOTCFLAGS += -I$(obj) -I$(srctree)/$(obj)
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quiet_cmd_copy_zlib = COPY $@
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cmd_copy_zlib = sed "s@__attribute_used__@@;s@<linux/\([^>]\+\).*@\"\1\"@" $< > $@
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quiet_cmd_copy_zlibheader = COPY $@
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cmd_copy_zlibheader = sed "s@<linux/\([^>]\+\).*@\"\1\"@" $< > $@
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# stddef.h for NULL
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quiet_cmd_copy_zliblinuxheader = COPY $@
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cmd_copy_zliblinuxheader = sed "s@<linux/string.h>@\"string.h\"@;s@<linux/kernel.h>@<stddef.h>@;s@<linux/\([^>]\+\).*@\"\1\"@" $< > $@
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$(addprefix $(obj)/,$(zlib)): $(obj)/%: $(srctree)/lib/zlib_inflate/%
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$(call cmd,copy_zlib)
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$(addprefix $(obj)/,$(zlibheader)): $(obj)/%: $(srctree)/lib/zlib_inflate/%
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$(call cmd,copy_zlibheader)
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$(addprefix $(obj)/,$(zliblinuxheader)): $(obj)/%: $(srctree)/include/linux/%
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$(call cmd,copy_zliblinuxheader)
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clean-files := $(zlib) $(zlibheader) $(zliblinuxheader)
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quiet_cmd_bootcc = BOOTCC $@
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cmd_bootcc = $(CROSS32CC) -Wp,-MD,$(depfile) $(BOOTCFLAGS) -c -o $@ $<
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quiet_cmd_bootas = BOOTAS $@
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cmd_bootas = $(CROSS32CC) -Wp,-MD,$(depfile) $(BOOTAFLAGS) -c -o $@ $<
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quiet_cmd_bootld = BOOTLD $@
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cmd_bootld = $(CROSS32LD) $(BOOTLFLAGS) -o $@ $(2)
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$(patsubst %.c,%.o, $(filter %.c, $(src-boot))): %.o: %.c
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$(call if_changed_dep,bootcc)
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$(patsubst %.S,%.o, $(filter %.S, $(src-boot))): %.o: %.S
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$(call if_changed_dep,bootas)
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#-----------------------------------------------------------
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# ELF sections within the zImage bootloader/wrapper
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#-----------------------------------------------------------
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required := vmlinux.strip
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initrd := initrd
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obj-sec = $(foreach section, $(1), $(patsubst %,$(obj)/kernel-%.o, $(section)))
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src-sec = $(foreach section, $(1), $(patsubst %,$(obj)/kernel-%.c, $(section)))
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gz-sec = $(foreach section, $(1), $(patsubst %,$(obj)/kernel-%.gz, $(section)))
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hostprogs-y := addnote addRamDisk
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targets += zImage.vmode zImage.initrd.vmode zImage zImage.initrd \
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$(patsubst $(obj)/%,%, $(call obj-sec, $(required) $(initrd))) \
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$(patsubst $(obj)/%,%, $(call src-sec, $(required) $(initrd))) \
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$(patsubst $(obj)/%,%, $(call gz-sec, $(required) $(initrd))) \
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vmlinux.initrd
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extra-y := initrd.o
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quiet_cmd_ramdisk = RAMDISK $@
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cmd_ramdisk = $(obj)/addRamDisk $(obj)/ramdisk.image.gz $< $@
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quiet_cmd_stripvm = STRIP $@
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cmd_stripvm = $(STRIP) -s $< -o $@
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vmlinux.strip: vmlinux
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$(call if_changed,stripvm)
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$(obj)/vmlinux.initrd: vmlinux.strip $(obj)/addRamDisk $(obj)/ramdisk.image.gz
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$(call if_changed,ramdisk)
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quiet_cmd_addsection = ADDSEC $@
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cmd_addsection = $(CROSS32OBJCOPY) $@ \
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--add-section=.kernel:$(strip $(patsubst $(obj)/kernel-%.o,%, $@))=$(patsubst %.o,%.gz, $@) \
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--set-section-flags=.kernel:$(strip $(patsubst $(obj)/kernel-%.o,%, $@))=$(OBJCOPYFLAGS)
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quiet_cmd_addnote = ADDNOTE $@
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cmd_addnote = $(obj)/addnote $@
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$(call gz-sec, $(required)): $(obj)/kernel-%.gz: %
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$(call if_changed,gzip)
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$(obj)/kernel-initrd.gz: $(obj)/ramdisk.image.gz
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cp -f $(obj)/ramdisk.image.gz $@
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$(call src-sec, $(required) $(initrd)): $(obj)/kernel-%.c: $(obj)/kernel-%.gz
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@touch $@
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$(call obj-sec, $(required) $(initrd)): $(obj)/kernel-%.o: $(obj)/kernel-%.c
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$(call if_changed_dep,bootcc)
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$(call cmd,addsection)
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$(obj)/zImage.vmode: obj-boot += $(call obj-sec, $(required))
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$(obj)/zImage.vmode: $(call obj-sec, $(required)) $(obj-boot)
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$(call cmd,bootld,$(obj-boot))
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$(obj)/zImage.initrd.vmode: obj-boot += $(call obj-sec, $(required) $(initrd))
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$(obj)/zImage.initrd.vmode: $(call obj-sec, $(required) $(initrd)) $(obj-boot)
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$(call cmd,bootld,$(obj-boot))
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$(obj)/zImage: $(obj)/zImage.vmode $(obj)/addnote
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@cp -f $< $@
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$(call if_changed,addnote)
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$(obj)/zImage.initrd: $(obj)/zImage.initrd.vmode $(obj)/addnote
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@cp -f $< $@
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$(call if_changed,addnote)
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install: $(CONFIGURE) $(BOOTIMAGE)
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sh -x $(srctree)/$(src)/install.sh "$(KERNELRELEASE)" vmlinux System.map "$(INSTALL_PATH)" "$(BOOTIMAGE)"
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clean-files := $(addprefix $(objtree)/, $(obj-boot) vmlinux.strip)
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