On Thu, 2009-06-04 at 15:51 +0200, Arnaud Patard wrote: > wuzhangjin@xxxxxxxxx writes: > > Hi, > > > From: Wu Zhangjin <wuzj@xxxxxxxxxx> > > > > the difference between yeeloong-7inch and yeeloong-8.9inch is very > > small, only including the screen size and shutdown logic. so, it's very > > important to share the same kernel image file between them instead of > > adding some new kernel config options. benefit from this, the > > distribution developers only have a need to compile the kernel one time. > > > > to share the same kernel image file between yeelooong-7inch and > > yeeloong-8.9inch, there is a need to add a kernel command line, here I > > name is machtype, it works like this: > > > > machtype=lemote-yeeloong-2f-7inch > > company - product - cpu revision - size > > I'm curious. Why can't you use the boot monitor to pass the right > machine type instead ? iirc, you're using pmon and pmon has a variable > called "systype". If the systype variable is not designed for that, I'll > be happy to know its use :) > yes, I just checked the PMON variables, there is "systype" there, but seems can not be set(when reboot, will become the original one), maybe hard-coded in PMON? so i added another PMON variable: machtype, and added some source code: if there is a PMON machtype variable there, transfer it to a kernel command line. but i think using a kernel command line is better, because we can either set it as the karg variable in PMON or pass it in the boot.cfg, which is more flexible and in-dependent from the bootloader. and perhaps, someday, we can share the same kernel image file between fuloong2f box and yeeloong2f laptop via this kernel command line: machtype, because there is really only a few difference between them(only the reboot/shutdown logic, serial port). I really want to share them and remove one of the irq.c file :-) thanks! Wu Zhangjin > > Arnaud
