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硬件:rt2880F (mips)

FLASH:4M     0x00400000 + 0x00400000

SDRAM:32M   0x8A000000 + 0x02000000

Kernel:2.4

RootFs: squashfs

FW生成过程

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生成烧在mtdblock2(包含了rootfs的地址)

系统启动的时候会根据rootfs的具体地址动态生成mtdblock1地址

FW使用lzma压缩

Bootloader bootm 中将其解压到指定位置:0x8a0000

启动:init脚本

/etc/init.d/rcS

App:

busybox

Xmldb

Httpd(mathopd)

2690:

网络子系统