On Wed, Sep 11, 2013 at 02:15:59PM -0700, Stephen Warren wrote: > On 09/11/2013 03:12 PM, Allen Martin wrote: > > On Mon, Sep 09, 2013 at 02:53:51PM -0700, Stephen Warren wrote: > >> On 09/09/2013 02:15 PM, Allen Martin wrote: > >>> Add command "--odmdata" to pass odmdata down to the miniloader. This > >>> is used by the miniloader for things such as UART init and RAM sizing. > >>> It is normally not needed and is really only useful for miniloader > >>> debugging. > >> > >> Does the miniloader put it into the BCT in IRAM so that the bootloader > >> can also read it? If suppose we expect the correct ODMDATA to be already > >> included in the BCT that tegrarcm sends though, so the bootloader > >> already sees the correct value. > > > > Yes, miniloader will update the BCT with the new value if you send > > this command after downloading a BCT. Really the only thing I'm using > > this for is the side effect inside miniloader that causes it to > > reinitialize the UART with the new odmdata value. For some reason > > when you donwload the BCT, miniloader does not do that, and when you > > boot in recovery mode there's no initial BCT so UART never gets > > initialized in miniloader and you get no debug prints. > > Oh, I wasn't aware that the miniloader ever initialized the UART. Debug > prints from what? The miniloader itself, or what it loads (which I think > should be initializing the UART from scratch anyway, since I assume the > boot ROM doesn't do it for the regular boot path either). Yes, debugging the miniloader. I loaded a debug version of the miniloader during venice2 bringup to determine why it was failing and added this command so I could see the error messages from it. It may only be useful to me, so I can yank it from the series if you don't think it's useful for inclusion in the upstream repository. -Allen -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
