1 files changed, 155 insertions, 0 deletions

diff --git a/arch/mips/boot/compressed/Makefile b/arch/mips/boot/compressed/Makefile
new file mode 100644
index 000000000..eae0fad30
--- /dev/null
+++ b/arch/mips/boot/compressed/Makefile
@@ -0,0 +1,155 @@
+#
+# This file is subject to the terms and conditions of the GNU General Public
+# License.
+#
+# Adapted for MIPS Pete Popov, Dan Malek
+#
+# Copyright (C) 1994 by Linus Torvalds
+# Adapted for PowerPC by Gary Thomas
+# modified by Cort (cort@cs.nmt.edu)
+#
+# Copyright (C) 2009 Lemote Inc. & DSLab, Lanzhou University
+# Author: Wu Zhangjin <wuzhangjin@gmail.com>
+#
+
+include $(srctree)/arch/mips/Kbuild.platforms
+
+# set the default size of the mallocing area for decompressing
+BOOT_HEAP_SIZE := 0x400000
+
+# Disable Function Tracer
+KBUILD_CFLAGS := $(filter-out -pg, $(KBUILD_CFLAGS))
+
+KBUILD_CFLAGS := $(filter-out -fstack-protector, $(KBUILD_CFLAGS))
+
+# Disable lq/sq in zboot
+ifdef CONFIG_CPU_LOONGSON64
+KBUILD_CFLAGS := $(filter-out -march=loongson3a, $(KBUILD_CFLAGS)) -march=mips64r2
+endif
+
+KBUILD_CFLAGS := $(KBUILD_CFLAGS) -D__KERNEL__ -D__DISABLE_EXPORTS \
+        -DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) -D"VMLINUX_LOAD_ADDRESS_ULL=$(VMLINUX_LOAD_ADDRESS)ull"
+
+KBUILD_AFLAGS := $(KBUILD_AFLAGS) -D__ASSEMBLY__ \
+        -DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) \
+        -DKERNEL_ENTRY=$(VMLINUX_ENTRY_ADDRESS)
+
+# Prevents link failures: __sanitizer_cov_trace_pc() is not linked in.
+KCOV_INSTRUMENT         := n
+UBSAN_SANITIZE := n
+
+# decompressor objects (linked with vmlinuz)
+vmlinuzobjs-y := $(obj)/head.o $(obj)/decompress.o $(obj)/string.o $(obj)/bswapsi.o
+
+ifdef CONFIG_DEBUG_ZBOOT
+vmlinuzobjs-$(CONFIG_DEBUG_ZBOOT)                  += $(obj)/dbg.o
+vmlinuzobjs-$(CONFIG_SYS_SUPPORTS_ZBOOT_UART16550) += $(obj)/uart-16550.o
+vmlinuzobjs-$(CONFIG_SYS_SUPPORTS_ZBOOT_UART_PROM) += $(obj)/uart-prom.o
+vmlinuzobjs-$(CONFIG_MIPS_ALCHEMY)                 += $(obj)/uart-alchemy.o
+vmlinuzobjs-$(CONFIG_ATH79)                        += $(obj)/uart-ath79.o
+endif
+
+extra-y += uart-ath79.c
+$(obj)/uart-ath79.c: $(srctree)/arch/mips/ath79/early_printk.c
+        $(call cmd,shipped)
+
+vmlinuzobjs-$(CONFIG_KERNEL_XZ) += $(obj)/ashldi3.o
+
+extra-y += ashldi3.c
+$(obj)/ashldi3.c: $(obj)/%.c: $(srctree)/lib/%.c FORCE
+        $(call if_changed,shipped)
+
+extra-y += bswapsi.c
+$(obj)/bswapsi.c: $(obj)/%.c: $(srctree)/arch/mips/lib/%.c FORCE
+        $(call if_changed,shipped)
+
+targets := $(notdir $(vmlinuzobjs-y))
+
+targets += vmlinux.bin
+OBJCOPYFLAGS_vmlinux.bin := $(OBJCOPYFLAGS) -O binary -R .comment -S
+$(obj)/vmlinux.bin: $(KBUILD_IMAGE) FORCE
+        $(call if_changed,objcopy)
+
+tool_$(CONFIG_KERNEL_GZIP)    = gzip
+tool_$(CONFIG_KERNEL_BZIP2)   = bzip2
+tool_$(CONFIG_KERNEL_LZ4)     = lz4
+tool_$(CONFIG_KERNEL_LZMA)    = lzma
+tool_$(CONFIG_KERNEL_LZO)     = lzo
+tool_$(CONFIG_KERNEL_XZ)      = xzkern
+tool_$(CONFIG_KERNEL_ZSTD)    = zstd22
+
+targets += vmlinux.bin.z
+$(obj)/vmlinux.bin.z: $(obj)/vmlinux.bin FORCE
+        $(call if_changed,$(tool_y))
+
+targets += piggy.o dummy.o
+OBJCOPYFLAGS_piggy.o := --add-section=.image=$(obj)/vmlinux.bin.z \
+                        --set-section-flags=.image=contents,alloc,load,readonly,data
+$(obj)/piggy.o: $(obj)/dummy.o $(obj)/vmlinux.bin.z FORCE
+        $(call if_changed,objcopy)
+
+HOSTCFLAGS_calc_vmlinuz_load_addr.o += $(LINUXINCLUDE)
+
+# Calculate the load address of the compressed kernel image
+hostprogs := calc_vmlinuz_load_addr
+
+ifneq ($(zload-y),)
+VMLINUZ_LOAD_ADDRESS := $(zload-y)
+else
+VMLINUZ_LOAD_ADDRESS = $(shell $(obj)/calc_vmlinuz_load_addr \
+                $(obj)/vmlinux.bin $(LINKER_LOAD_ADDRESS))
+endif
+UIMAGE_LOADADDR = $(VMLINUZ_LOAD_ADDRESS)
+
+vmlinuzobjs-y += $(obj)/piggy.o
+
+quiet_cmd_zld = LD      $@
+      cmd_zld = $(LD) $(KBUILD_LDFLAGS) -Ttext $(VMLINUZ_LOAD_ADDRESS) -T $< $(vmlinuzobjs-y) -o $@
+quiet_cmd_strip = STRIP   $@
+      cmd_strip = $(STRIP) -s $@
+vmlinuz: $(src)/ld.script $(vmlinuzobjs-y) $(obj)/calc_vmlinuz_load_addr
+        $(call cmd,zld)
+        $(call cmd,strip)
+
+#
+# Some DECstations need all possible sections of an ECOFF executable
+#
+ifdef CONFIG_MACH_DECSTATION
+  e2eflag := -a
+endif
+
+# elf2ecoff can only handle 32bit image
+hostprogs += ../elf2ecoff
+
+ifdef CONFIG_32BIT
+        VMLINUZ = vmlinuz
+else
+        VMLINUZ = vmlinuz.32
+endif
+
+quiet_cmd_32 = OBJCOPY $@
+      cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@
+vmlinuz.32: vmlinuz
+        $(call cmd,32)
+
+quiet_cmd_ecoff = ECOFF   $@
+      cmd_ecoff = $< $(VMLINUZ) $@ $(e2eflag)
+vmlinuz.ecoff: $(obj)/../elf2ecoff $(VMLINUZ)
+        $(call cmd,ecoff)
+
+OBJCOPYFLAGS_vmlinuz.bin := $(OBJCOPYFLAGS) -O binary
+vmlinuz.bin: vmlinuz
+        $(call cmd,objcopy)
+
+OBJCOPYFLAGS_vmlinuz.srec := $(OBJCOPYFLAGS) -S -O srec
+vmlinuz.srec: vmlinuz
+        $(call cmd,objcopy)
+
+uzImage.bin: vmlinuz.bin FORCE
+        $(call if_changed,uimage,none)
+
+clean-files += $(objtree)/vmlinuz
+clean-files += $(objtree)/vmlinuz.32
+clean-files += $(objtree)/vmlinuz.ecoff
+clean-files += $(objtree)/vmlinuz.bin
+clean-files += $(objtree)/vmlinuz.srec