From 0d2d5b055d824a8eb822f29181aed5435fc3c045 Mon Sep 17 00:00:00 2001
From: nbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73>
Date: Wed, 7 Jun 2006 23:45:42 +0000
Subject: generic lzma loader: add support for memory copying, preserve prom
 arguments

git-svn-id: svn://svn.openwrt.org/openwrt/branches/buildroot-ng/openwrt@3908 3c298f89-4303-0410-b956-a3cf2f4a3e73
---
 .../linux/image/generic/lzma-loader/src/Makefile   | 29 ++++++++++++++++------
 1 file changed, 22 insertions(+), 7 deletions(-)

(limited to 'target/linux/image/generic/lzma-loader/src/Makefile')

diff --git a/target/linux/image/generic/lzma-loader/src/Makefile b/target/linux/image/generic/lzma-loader/src/Makefile
index 8dfd76a6a2..54356889f5 100644
--- a/target/linux/image/generic/lzma-loader/src/Makefile
+++ b/target/linux/image/generic/lzma-loader/src/Makefile
@@ -1,9 +1,16 @@
 LOADADDR = 0x80400000		# RAM start + 4M
 KERNEL_ENTRY = 0x80001000
 RAMSIZE = 0x00100000		# 1MB
+IMAGE_COPY:=0
 
 CROSS_COMPILE = mips-linux-
 
+OBJCOPY:= $(CROSS_COMPILE)objcopy -O binary -R .reginfo -R .note -R .comment -R .mdebug -S
+CFLAGS := -fno-builtin -Os -G 0 -ffunction-sections -mno-abicalls -fno-pic -mabi=32 -march=mips32 -Wa,-32 -Wa,-march=mips32 -Wa,-mips32 -Wa,--trap -Wall -DRAMSIZE=${RAMSIZE} -DKERNEL_ENTRY=${KERNEL_ENTRY} -D_LZMA_IN_CB
+ifeq ($(IMAGE_COPY),1)
+CFLAGS += -DLOADADDR=${LOADADDR} -DIMAGE_COPY=1
+endif
+
 .S.s:
 	$(CPP) $(CFLAGS) $< -o $*.s
 .S.o:
@@ -13,12 +20,8 @@ CROSS_COMPILE = mips-linux-
 
 CC =       $(CROSS_COMPILE)gcc
 LD =       $(CROSS_COMPILE)ld
-OBJCOPY =  $(CROSS_COMPILE)objcopy
 OBJDUMP =  $(CROSS_COMPILE)objdump
 
-CFLAGS = -fno-builtin -Os -G 0 -mno-abicalls -fno-pic -Wall -DRAMSIZE=${RAMSIZE} -DKERNEL_ENTRY=${KERNEL_ENTRY} -D_LZMA_IN_CB
-# CFLAGS = -fno-builtin -Os -G 0 -mno-abicalls -fno-pic -Wall -DRAMSIZE=${RAMSIZE}
-
 O_FORMAT = $(shell $(OBJDUMP) -i | head -2 | grep elf32)
 
 # Drop some uninteresting sections in the kernel.
@@ -26,17 +29,29 @@ O_FORMAT = $(shell $(OBJDUMP) -i | head -2 | grep elf32)
 drop-sections   = .reginfo .mdebug .comment
 strip-flags     = $(addprefix --remove-section=,$(drop-sections))
 
-
 all : lzma.elf
 
 lzma.lds: lzma.lds.in
-	sed -e 's,@LOADADDR@,$(LOADADDR),g' $< >$@
+	sed -e 's,@LOADADDR@,$(LOADADDR),g' -e 's,@ENTRY@,_start,g' $< >$@
 
 kernel.o: vmlinux.lzma lzma.lds
 	$(LD) -r -b binary --oformat $(O_FORMAT) -o $@ $<
 
+ifeq ($(IMAGE_COPY),1)
+lzma.o: decompress.o LzmaDecode.o kernel.o
+	sed -e 's,@LOADADDR@,$(LOADADDR),g' -e 's,@ENTRY@,entry,g' lzma.lds.in >lzma-stage2.lds
+	$(LD) -static --no-warn-mismatch -e entry -Tlzma-stage2.lds -o temp-$@ $^
+	$(OBJCOPY) temp-$@ lzma.tmp
+	@echo "SECTIONS { .data : { code_start = .; *(.data) code_stop = .; }}" > lzma-data.lds
+	$(LD) -no-warn-mismatch -T lzma-data.lds -r -o $@ -b binary lzma.tmp --oformat $(O_FORMAT)
+	
+lzma.elf: start.o lzma.o
+	sed -e 's,@LOADADDR@,$(KERNEL_ENTRY),g' lzma-copy.lds.in >lzma-copy.lds
+	$(LD) -s -Tlzma-copy.lds -o $@ $^
+else
 lzma.elf: start.o decompress.o LzmaDecode.o kernel.o
 	$(LD) -s -Tlzma.lds -o $@ $^
+endif
 
 clean:
-	rm -f *.o lzma.elf
+	rm -f *.o lzma.elf *.tmp *.lds
-- 
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