Cubietruck---2. fastboot的烧写

1.代码路径
主机端的fastboot的路径:
    ./android42/system/core/fastboot/*
cong@dell:/work/ct/android42$ mmm  ./system/core/fastboot/
linux下编译的文件

cong@dell:/work/ct$ tree ./android42/system/core/fastboot/
├── bootimg.c
├── engine.c
├── fastboot.c
├── protocol.c
├── usb_linux.c
└── util_linux.c

板子上的fastboot的路径:
    ./lichee/u-boot/common/cmd_fastboot.c
2. 烧写出错
板子在开机时随便按一个键进入uboot,然后输出fastboot

sunxi#fastboot
ptn 0 name='bootloader' start=16777216 len=16777216
ptn 1 name='env' start=33554432 len=16777216
ptn 2 name='boot' start=50331648 len=16777216
ptn 3 name='system' start=67108864 len=536870912
ptn 4 name='data' start=603979776 len=536870912
ptn 5 name='misc' start=1140850688 len=16777216
ptn 6 name='recovery' start=1157627904 len=33554432
ptn 7 name='cache' start=1191182336 len=335544320
ptn 8 name='private' start=1526726656 len=16777216
ptn 9 name='databk' start=1543503872 len=268435456
ptn 10 name='UDISK' start=1811939328 len=1543503872
Fastboot entered

主机端:

cong@dell:/work/ct$ sudo ./android42/out/host/linux-x86/bin/fastboot devices
20080411 fastboot
cong@dell:/work/ct$ sudo ./android42/out/host/linux-x86/bin/fastboot flash boot ./android42/out/target/product/sugar-cubietruck/boot.img
sending 'boot' (7698 KB)...
FAILED (remote: data too large, larger than buffer)
finished. total time: 0.007s

板子上的提示是:

getvar
getvar
download
download_size = 2018133165
Starting download of 1924 MB

注意: boot分区是boot.img包括kernel+initramfs
3. 解决方法
主机的上fastboot有个小bug,只需要重新编译主机上的fastboot就可以了.

main   文件在android42/system/core/fastboot/fastboot.c中
    --> fb_download_data   文件在android42/system/core/fastboot/protocol.c中
        中将 sprintf(cmd, "download:%08x", size);
        改为 sprintf(cmd, "download:%08x:", size);

即后面随便加上一个除[0-9][a-f]外的一个字符,这样板子上的fastboot在解析cmd时就不会弄错了