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60 lines
1.8 KiB
60 lines
1.8 KiB
# 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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