parisc: Add core code for self-extracting kernel

Signed-off-by: Helge Deller <deller@gmx.de>

1 files changed, 86 insertions, 0 deletions

diff --git a/arch/parisc/boot/compressed/Makefile b/arch/parisc/boot/compressed/Makefile
new file mode 100644
index 000000000000..5450a11c9d10
--- /dev/null
+++ b/arch/parisc/boot/compressed/Makefile
@@ -0,0 +1,86 @@
+#
+# linux/arch/parisc/boot/compressed/Makefile
+#
+# create a compressed self-extracting vmlinux image from the original vmlinux
+#
+
+KCOV_INSTRUMENT := n
+GCOV_PROFILE := n
+UBSAN_SANITIZE := n
+
+targets := vmlinux.lds vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2
+targets += vmlinux.bin.xz vmlinux.bin.lzma vmlinux.bin.lzo vmlinux.bin.lz4
+targets += misc.o piggy.o sizes.h head.o real2.o firmware.o
+
+KBUILD_CFLAGS := -D__KERNEL__ -O2 -DBOOTLOADER
+KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING
+KBUILD_CFLAGS += $(cflags-y) -fno-delete-null-pointer-checks
+KBUILD_CFLAGS += -fno-PIE -mno-space-regs -mdisable-fpregs
+ifndef CONFIG_64BIT
+KBUILD_CFLAGS += -mfast-indirect-calls
+endif
+
+OBJECTS += $(obj)/head.o $(obj)/real2.o $(obj)/firmware.o $(obj)/misc.o $(obj)/piggy.o
+
+# LDFLAGS_vmlinux := -X --whole-archive -e startup -T
+LDFLAGS_vmlinux := -X -e startup --as-needed -T
+$(obj)/vmlinux: $(obj)/vmlinux.lds $(OBJECTS) $(LIBGCC)
+	$(call if_changed,ld)
+
+sed-sizes := -e 's/^\([0-9a-fA-F]*\) . \(__bss_start\|_end\|parisc_kernel_start\)$$/\#define SZ\2 0x\1/p'
+
+quiet_cmd_sizes = GEN $@
+      cmd_sizes = $(NM) $< | sed -n $(sed-sizes) > $@
+
+$(obj)/sizes.h: vmlinux
+	$(call if_changed,sizes)
+
+AFLAGS_head.o += -I$(objtree)/$(obj) -DBOOTLOADER
+$(obj)/head.o: $(obj)/sizes.h
+
+CFLAGS_misc.o += -I$(objtree)/$(obj)
+$(obj)/misc.o: $(obj)/sizes.h
+
+$(obj)/firmware.o: $(obj)/firmware.c
+$(obj)/firmware.c: $(srctree)/arch/$(SRCARCH)/kernel/firmware.c
+	$(call cmd,shipped)
+
+AFLAGS_real2.o += -DBOOTLOADER
+$(obj)/real2.o: $(obj)/real2.S
+$(obj)/real2.S: $(srctree)/arch/$(SRCARCH)/kernel/real2.S
+	$(call cmd,shipped)
+
+$(obj)/misc.o: $(obj)/sizes.h
+
+CPPFLAGS_vmlinux.lds += -I$(objtree)/$(obj) -DBOOTLOADER
+$(obj)/vmlinux.lds: $(obj)/sizes.h
+
+OBJCOPYFLAGS_vmlinux.bin := -O binary -R .comment -S
+$(obj)/vmlinux.bin: vmlinux
+	$(call if_changed,objcopy)
+
+vmlinux.bin.all-y := $(obj)/vmlinux.bin
+
+suffix-$(CONFIG_KERNEL_GZIP)  := gz
+suffix-$(CONFIG_KERNEL_BZIP2) := bz2
+suffix-$(CONFIG_KERNEL_LZ4)  := lz4
+suffix-$(CONFIG_KERNEL_LZMA)  := lzma
+suffix-$(CONFIG_KERNEL_LZO)  := lzo
+suffix-$(CONFIG_KERNEL_XZ)  := xz
+
+$(obj)/vmlinux.bin.gz: $(vmlinux.bin.all-y)
+	$(call if_changed,gzip)
+$(obj)/vmlinux.bin.bz2: $(vmlinux.bin.all-y)
+	$(call if_changed,bzip2)
+$(obj)/vmlinux.bin.lz4: $(vmlinux.bin.all-y)
+	$(call if_changed,lz4)
+$(obj)/vmlinux.bin.lzma: $(vmlinux.bin.all-y)
+	$(call if_changed,lzma)
+$(obj)/vmlinux.bin.lzo: $(vmlinux.bin.all-y)
+	$(call if_changed,lzo)
+$(obj)/vmlinux.bin.xz: $(vmlinux.bin.all-y)
+	$(call if_changed,xzkern)
+
+LDFLAGS_piggy.o := -r --format binary --oformat $(LD_BFD) -T
+$(obj)/piggy.o: $(obj)/vmlinux.scr $(obj)/vmlinux.bin.$(suffix-y)
+	$(call if_changed,ld)