61 lines
1.8 KiB
Makefile
61 lines
1.8 KiB
Makefile
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# SPDX-License-Identifier: GPL-2.0
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#
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# linux/arch/arm/boot/bootp/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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GCOV_PROFILE := n
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ifdef PHYS_OFFSET
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add_hex = $(shell printf 0x%x $$(( $(1) + $(2) )) )
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# If PHYS_OFFSET is set, INITRD_PHYS and PARAMS_PHYS can be derived,
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# otherwise they must be passed on the command line.
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#
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# Note: the following conditions must always be true:
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# PARAMS_PHYS must be within 4MB of ZRELADDR
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# INITRD_PHYS must be in RAM
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PARAMS_PHYS := $(call add_hex, $(PHYS_OFFSET), 0x100)
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# guess an initrd location if possible
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initrd_offset-$(CONFIG_ARCH_FOOTBRIDGE) += 0x00800000
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initrd_offset-$(CONFIG_ARCH_SA1100) += 0x00800000
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initrd_offset-$(CONFIG_ARCH_RPC) += 0x08000000
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INITRD_OFFSET := $(initrd_offset-y)
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ifdef INITRD_OFFSET
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INITRD_PHYS := $(call add_hex, $(PHYS_OFFSET), $(INITRD_OFFSET))
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endif
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endif
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PHONY += initrd
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initrd:
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@test "$(PARAMS_PHYS)" != "" || \
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(echo bootpImage: You must specify PHYS_OFFSET of PARAMS_PHYS ; exit -1)
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@test "$(INITRD_PHYS)" != "" || \
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(echo bootpImage: You must specify INITRD_OFFSET or INITRD_PHYS ; exit -1)
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@test "$(INITRD)" != "" || \
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(echo bootpImage: You must specify INITRD; exit -1)
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LDFLAGS_bootp := --no-undefined -X \
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--defsym initrd_phys=$(INITRD_PHYS) \
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--defsym params_phys=$(PARAMS_PHYS) -T
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AFLAGS_initrd.o :=-DINITRD=\"$(INITRD)\"
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targets := bootp init.o kernel.o initrd.o
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# Note that bootp.lds picks up kernel.o and initrd.o
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$(obj)/bootp: $(src)/bootp.lds $(addprefix $(obj)/,init.o kernel.o initrd.o) FORCE
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$(call if_changed,ld)
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# kernel.o and initrd.o includes a binary image using
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# .incbin, a dependency which is not tracked automatically
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$(obj)/kernel.o: arch/arm/boot/zImage FORCE
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$(obj)/initrd.o: initrd $(INITRD) FORCE
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PHONY += $(INITRD)
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