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rw99yy

硬件:rt2880F (mips)
FLASH:4M     0x00400000 + 0x00400000
SDRAM:32M   0x8A000000 + 0x02000000

Kernel:2.4
RootFs: squashfs


FW生成過程
mipsel-linux-objcopy -O binary -R .note -R .comment -S $(KERNELDIR)/vmlinux vmlinux.bin
./tools/squashfs-tools/lzma/lzma e vmlinux.bin $(KERNEL_IMG)
./tools/squashfs-tools/mksquashfs-lzma rootfs $(ROOTFS_IMG) -le
./tools/buildimg/packimgs -v -o raw.img -i $(KERNEL_IMG) -i $(ROOTFS_IMG)
./tools/buildimg/v2image -v -i raw.img -o web.img -d /dev/mtdblock/2  (specify mtdblock of f/w)

Vmlinux + rootfs = release.bin

Mtd device
Mtdblock1 =   rootfs  (This address is dynamic generate)
Mtdblock2 =   upgrade
Fw由kernel+rootfs生成燒在mtdblock2(包含了rootfs的地址)
系統(tǒng)啟動的時候會根據(jù)rootfs的具體地址動態(tài)生成mtdblock1地址

FW使用lzma壓縮
Bootloader bootm 中將其解壓到指定位置:0x8a0000

啟動:init腳本
/etc/init.d/rcS


App:
busybox
Xmldb
Httpd(mathopd)



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本文來自ChinaUnix博客，如果查看原文請點：http://blog.chinaunix.net/u1/38413/showart_1895582.html