forked from Minki/linux
92481c7d14
There are a number of old Makefile.boot files that remain from the multiplatform conversion, and three that are still in use. These provide the "ZRELADDR", "PARAMS_PHYS" and "INITRD_PHYS" values that are platform specific. It turns out that we can generally just derive this from information that is available elsewhere: - ZRELADDR is normally detected at runtime with the CONFIG_AUTO_ZRELADDR flag, but also needed to be passed to for 'make uImage'. In a multiplatform kernel, one always has to pass this as the $(LOADADDR) variable, but in the StrongARM kernels we can derive it from the sum of $(CONFIG_PHYS_OFFSET) and $(TEXT_OFFSET) that are already known. - PARAMS_PHYS and INITRD_PHYS are only used for bootpImage, which in turn is only used for the pre-ATAGS 'param_struct' based boot interface on StrongARM based machines with old boot loaders. They can both be derived from CONFIG_PHYS_OFFSET and a machine specific offset for the initrd, so all of the logic for these can be part of arch/arm/boot/bootp/Makefile. Signed-off-by: Arnd Bergmann <arnd@arndb.de>
94 lines
2.4 KiB
Makefile
94 lines
2.4 KiB
Makefile
#
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# arch/arm/boot/Makefile
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#
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# This file is included by the global makefile so that you can add your own
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# architecture-specific flags and dependencies.
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#
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# This file is subject to the terms and conditions of the GNU General Public
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# License. See the file "COPYING" in the main directory of this archive
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# for more details.
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#
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# Copyright (C) 1995-2002 Russell King
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#
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OBJCOPYFLAGS :=-O binary -R .comment -S
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# ZRELADDR == virt_to_phys(PAGE_OFFSET + TEXT_OFFSET)
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ifdef CONFIG_PHYS_OFFSET
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add_hex = $(shell printf 0x%x $$(( $(1) + $(2) )) )
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ZRELADDR := $(call add_hex, $(CONFIG_PHYS_OFFSET), $(TEXT_OFFSET))
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endif
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PHYS_OFFSET := $(CONFIG_PHYS_OFFSET)
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export ZRELADDR PARAMS_PHYS PHYS_OFFSET
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targets := Image zImage xipImage bootpImage uImage
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ifeq ($(CONFIG_XIP_KERNEL),y)
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cmd_deflate_xip_data = $(CONFIG_SHELL) -c \
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'$(srctree)/$(src)/deflate_xip_data.sh $< $@'
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ifeq ($(CONFIG_XIP_DEFLATED_DATA),y)
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quiet_cmd_mkxip = XIPZ $@
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cmd_mkxip = $(cmd_objcopy) && $(cmd_deflate_xip_data)
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else
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quiet_cmd_mkxip = $(quiet_cmd_objcopy)
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cmd_mkxip = $(cmd_objcopy)
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endif
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$(obj)/xipImage: vmlinux FORCE
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$(call if_changed,mkxip)
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@$(kecho) ' Physical Address of xipImage: $(CONFIG_XIP_PHYS_ADDR)'
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$(obj)/Image $(obj)/zImage: FORCE
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@echo 'Kernel configured for XIP (CONFIG_XIP_KERNEL=y)'
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@echo 'Only the xipImage target is available in this case'
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@false
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else
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$(obj)/xipImage: FORCE
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@echo 'Kernel not configured for XIP (CONFIG_XIP_KERNEL!=y)'
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@false
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$(obj)/Image: vmlinux FORCE
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$(call if_changed,objcopy)
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$(obj)/compressed/vmlinux: $(obj)/Image FORCE
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$(Q)$(MAKE) $(build)=$(obj)/compressed $@
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$(obj)/zImage: $(obj)/compressed/vmlinux FORCE
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$(call if_changed,objcopy)
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endif
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ifneq ($(LOADADDR),)
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UIMAGE_LOADADDR=$(LOADADDR)
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else
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ifeq ($(CONFIG_ZBOOT_ROM),y)
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UIMAGE_LOADADDR=$(CONFIG_ZBOOT_ROM_TEXT)
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else
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UIMAGE_LOADADDR=$(ZRELADDR)
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endif
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endif
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check_for_multiple_loadaddr = \
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if [ $(words $(UIMAGE_LOADADDR)) -ne 1 ]; then \
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echo 'multiple (or no) load addresses: $(UIMAGE_LOADADDR)'; \
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echo 'This is incompatible with uImages'; \
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echo 'Specify LOADADDR on the commandline to build an uImage'; \
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false; \
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fi
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$(obj)/uImage: $(obj)/zImage FORCE
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@$(check_for_multiple_loadaddr)
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$(call if_changed,uimage)
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$(obj)/bootp/bootp: $(obj)/zImage FORCE
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$(Q)$(MAKE) $(build)=$(obj)/bootp $@
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$(obj)/bootpImage: $(obj)/bootp/bootp FORCE
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$(call if_changed,objcopy)
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subdir- := bootp compressed dts
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