> On Wednesday 25 January 2012 19:02:45 Marek Vasut wrote: > > > This patch adapts the bootm command so that it can use an existing > > > atags command set up by a previous bootloader. > > > > Why do you need it? > > Default Nokia kernel has patches which using non-standard atags for > reporting bootmode, bootreason, hw-rev, NOLO version, boot count, ...
So what? Make u-boot pass arbitrary atags and specify them in your board file. > > Closed-source Maemo application need to know these properties (read via > /proc/bootreason, ...) and will restart device if there is error. Fine? > > So U-Boot must can reuse old atags from NOLO and tell it new kernel. must can reuse? Anyway, that's nonsense, why won't u-boot be able to craft those atags? > > > > If the environment variable > > > "atagaddr" is unset, bootm behaves as normal. If "atagaddr" is set, > > > bootm will use atags address from environment variable and also append > > > new boot args (if specified in u-boot). For example, if a previous > > > boot loader already set up the atags struct at 0x80000100: > > > > > > setenv atagaddr 0x80000100; bootm 0x80008000 > > > > Can't you set those atags correctly in uboot? > > No, because atags are not static (e.g bootreason). So? You craft them properly in u-boot? M _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
