make aruba lzma loader more generic and move it to target/linux/image/generic/lzma-loader

git-svn-id: svn://svn.openwrt.org/openwrt/trunk/openwrt@3076 3c298f89-4303-0410-b956-a3cf2f4a3e73

target/linux/image/aruba/Makefile

@@ -1,15 +1,25 @@
 include $(TOPDIR)/rules.mk
 
+LOADADDR = 0x81000000		# RAM start + 16M 
+KERNEL_ENTRY = 0x80100000
+RAMSIZE = 0x00100000		# 1MB
+
+LOADER_MAKEOPTS= \
+		KDIR=$(KDIR) \
+		LOADADDR=$(LOADADDR) \
+		KERNEL_ENTRY=$(KERNEL_ENTRY) \
+		RAMSIZE=$(RAMSIZE)
+
 KDIR:=$(BUILD_DIR)/linux-$(KERNEL)-$(BOARD)
 
 lzma-loader-clean:
-	$(MAKE) -C lzma-loader clean
+	$(MAKE) -C ../generic/lzma-loader $(LOADER_MAKEOPTS) clean
 
 lzma-loader-prepare:
-	$(MAKE) -C lzma-loader prepare
+	$(MAKE) -C ../generic/lzma-loader $(LOADER_MAKEOPTS) prepare
 
 lzma-loader-compile: $(KDIR)/vmlinux.lzma lzma-loader-prepare
-	$(MAKE) -C lzma-loader compile KDIR=$(KDIR)
+	$(MAKE) -C ../generic/lzma-loader $(LOADER_MAKEOPTS) compile
 
 ifeq ($(IB),)
 $(KDIR)/vmlinux.lzma: $(KDIR)/vmlinux

target/linux/image/generic/lzma-loader/Makefile

@@ -5,7 +5,7 @@ include $(TOPDIR)/rules.mk
 PKG_NAME := loader
 PKG_VERSION := 0.05
 
-PKG_BUILD_DIR := $(BUILD_DIR)/$(PKG_NAME)-$(PKG_VERSION)
+PKG_BUILD_DIR := $(KDIR)/$(PKG_NAME)-$(PKG_VERSION)
 
 $(PKG_BUILD_DIR)/.prepared:
 	mkdir $(PKG_BUILD_DIR)
@@ -14,7 +14,11 @@ $(PKG_BUILD_DIR)/.prepared:
 
 $(PKG_BUILD_DIR)/lzma.elf: $(PKG_BUILD_DIR)/.prepared $(PKG_BUILD_DIR)/vmlinux.lzma
 	$(MAKE) -C $(PKG_BUILD_DIR) CC=$(TARGET_CC) \
-		LD=$(TARGET_CROSS)ld CROSS_COMPILE=$(TARGET_CROSS)
+		LD=$(TARGET_CROSS)ld CROSS_COMPILE=$(TARGET_CROSS) \
+		RAMSIZE=$(RAMSIZE) \
+		LOADADDR=$(LOADADDR) \
+		KERNEL_ENTRY=$(KERNEL_ENTRY)
+
 
 $(PKG_BUILD_DIR)/vmlinux.lzma: $(KDIR)/vmlinux.lzma
 	cp $< $@

target/linux/image/generic/lzma-loader/src/Makefile

@@ -1,4 +1,5 @@
-LOADADDR = 0x81000000
+LOADADDR = 0x80400000		# RAM start + 4M
+KERNEL_ENTRY = 0x80001000
 RAMSIZE = 0x00100000		# 1MB
 
 CROSS_COMPILE = mips-linux-
@@ -15,7 +16,7 @@ LD =       $(CROSS_COMPILE)ld
 OBJCOPY =  $(CROSS_COMPILE)objcopy
 OBJDUMP =  $(CROSS_COMPILE)objdump
 
-CFLAGS = -fno-builtin -Os -G 0 -mno-abicalls -fno-pic -Wall -DRAMSIZE=${RAMSIZE} -D_LZMA_IN_CB
+CFLAGS = -fno-builtin -Os -G 0 -mno-abicalls -fno-pic -Wall -DRAMSIZE=${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)
@@ -28,7 +29,10 @@ strip-flags     = $(addprefix --remove-section=,$(drop-sections))
 
 all : lzma.elf
 
-kernel.o: vmlinux.lzma
+lzma.lds: lzma.lds.in
+	sed -e 's,@LOADADDR@,$(LOADADDR),g' $< >$@
+
+kernel.o: vmlinux.lzma lzma.lds
 	$(LD) -r -b binary --oformat $(O_FORMAT) -o $@ $<
 
 lzma.elf: start.o decompress.o LzmaDecode.o kernel.o

target/linux/image/generic/lzma-loader/src/decompress.c

@@ -35,7 +35,6 @@
  */
 
 #include "LzmaDecode.h"
-#define LOADADDR 0x80100000
 
 #define KSEG0			0x80000000
 #define KSEG1			0xa0000000
@@ -137,12 +136,12 @@ void entry(unsigned long icache_size, unsigned long icache_lsize,
 
 	/* decompress kernel */
 	if ((i = LzmaDecode(&vs, &callback,
-	(unsigned char*)LOADADDR, osize, &osize)) == LZMA_RESULT_OK)
+	(unsigned char*)KERNEL_ENTRY, osize, &osize)) == LZMA_RESULT_OK)
 	{
 		blast_dcache(dcache_size, dcache_lsize);
 		blast_icache(icache_size, icache_lsize);
 
 		/* Jump to load address */
-		((void (*)(void)) LOADADDR)();
+		((void (*)(void)) KERNEL_ENTRY)();
 	}
 }

target/linux/image/generic/lzma-loader/src/lzma.lds.in

@@ -3,7 +3,7 @@ ENTRY(_start)
 SECTIONS
 {
   /* Read-only sections, merged into text segment: */
-  . = 0x81000000;
+  . = @LOADADDR@;
   .text      :
   {
     _ftext = . ;