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authorJames Hogan <james.hogan@imgtec.com>2013-08-30 16:42:41 +0100
committerRalf Baechle <ralf@linux-mips.org>2013-09-03 17:58:37 +0200
commit3185557d1acf8cc0c937b1343de83e2483bde28b (patch)
treed7b64e678000c35870ab4a00f27f01f456550d79 /arch/mips/Makefile
parent38d2d649be17b291a965a2e1370d119ee319caf2 (diff)
MIPS: Refactor load/entry address calculations
The vmlinux load address and entry address is calculated in multiple places: - arch/mips/Makefile defines load-y from CONFIG_PHYSICAL_START (or defined by the platform) and passes it to arch/mips/boot/compressed/Makefile. - arch/mips/boot/compressed/Makefile calculates kernel entry using nm. - arch/mips/lasat/image/Makefile calculates both load and entry address using nm. Lets combine these in the main Makefile and then pass them as Make parameters to each of the three boot image Makefiles (in boot/, boot/compressed, lasat/image/). The boot/ Makefile doesn't currently use them, but will soon need to for U-Boot image targets. The existing load-y definition is used in preference to calculating the load address using nm. Signed-off-by: James Hogan <james.hogan@imgtec.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Florian Fainelli <f.fainelli@gmail.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/5794/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/Makefile')
-rw-r--r--arch/mips/Makefile13
1 files changed, 10 insertions, 3 deletions
diff --git a/arch/mips/Makefile b/arch/mips/Makefile
index 6e1ab33f396a..91d5baa66540 100644
--- a/arch/mips/Makefile
+++ b/arch/mips/Makefile
@@ -194,6 +194,8 @@ include $(srctree)/arch/mips/Kbuild.platforms
ifdef CONFIG_PHYSICAL_START
load-y = $(CONFIG_PHYSICAL_START)
endif
+entry-y = 0x$(shell $(NM) vmlinux 2>/dev/null \
+ | grep "\bkernel_entry\b" | cut -f1 -d \ )
cflags-y += -I$(srctree)/arch/mips/include/asm/mach-generic
drivers-$(CONFIG_PCI) += arch/mips/pci/
@@ -225,6 +227,9 @@ KBUILD_CFLAGS += $(cflags-y)
KBUILD_CPPFLAGS += -DVMLINUX_LOAD_ADDRESS=$(load-y)
KBUILD_CPPFLAGS += -DDATAOFFSET=$(if $(dataoffset-y),$(dataoffset-y),0)
+bootvars-y = VMLINUX_LOAD_ADDRESS=$(load-y) \
+ VMLINUX_ENTRY_ADDRESS=$(entry-y)
+
LDFLAGS += -m $(ld-emul)
ifdef CONFIG_CC_STACKPROTECTOR
@@ -267,7 +272,8 @@ bootz-y += vmlinuz.srec
ifdef CONFIG_LASAT
rom.bin rom.sw: vmlinux
- $(Q)$(MAKE) $(build)=arch/mips/lasat/image $@
+ $(Q)$(MAKE) $(build)=arch/mips/lasat/image \
+ $(bootvars-y) $@
endif
#
@@ -292,12 +298,13 @@ all: $(all-y)
# boot
$(boot-y): $(vmlinux-32) FORCE
- $(Q)$(MAKE) $(build)=arch/mips/boot VMLINUX=$(vmlinux-32) arch/mips/boot/$@
+ $(Q)$(MAKE) $(build)=arch/mips/boot VMLINUX=$(vmlinux-32) \
+ $(bootvars-y) arch/mips/boot/$@
# boot/compressed
$(bootz-y): $(vmlinux-32) FORCE
$(Q)$(MAKE) $(build)=arch/mips/boot/compressed \
- VMLINUX_LOAD_ADDRESS=$(load-y) 32bit-bfd=$(32bit-bfd) $@
+ $(bootvars-y) 32bit-bfd=$(32bit-bfd) $@
CLEAN_FILES += vmlinux.32 vmlinux.64

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