[U-Boot] [EXTERNAL] Re: [PATCH 5/5] board: ti: beagleboneai: enable in am57xx_evm_defconfig

[Robey, Caleb <c-robey@ti.com>]

> -----Original Message-----
> From: Tom Rini [mailto:trini at konsulko.com]
> Sent: Thursday, November 21, 2019 10:34 AM
> To: Robey, Caleb
> Cc: Vutla, Lokesh; u-boot at lists.denx.de; Jason Kridner; Erdahl, Michael;
> Kridner, Jason; Kever Yang; Jagan Teki; Michal Simek; Stefan Roese; Neil
> Armstrong; Masahiro Yamada; Fabio Estevam; Troy Kisky; Rizvi, Mohammad
> Faiz Abbas; Dannenberg, Andreas; Hiblot, Jean-Jacques; Heiko Schocher; Joe
> Hershberger; Simon Glass; Sam Protsenko; Bajjuri, Praneeth; Ruslan
> Trofymenko; Alistair Strachan; Davis, Andrew
> Subject: Re: [EXTERNAL] Re: [PATCH 5/5] board: ti: beagleboneai: enable in
> am57xx_evm_defconfig
> 
> On Thu, Nov 21, 2019 at 04:00:03PM +0000, Robey, Caleb wrote:
> >
> >
> > > -----Original Message-----
> > > From: Tom Rini [mailto:trini at konsulko.com]
> > > Sent: Thursday, November 21, 2019 9:12 AM
> > > To: Vutla, Lokesh
> > > Cc: Robey, Caleb; u-boot at lists.denx.de; Jason Kridner; Erdahl,
> > > Michael; Kridner, Jason; Kever Yang; Jagan Teki; Michal Simek;
> > > Stefan Roese; Neil Armstrong; Masahiro Yamada; Fabio Estevam; Troy
> > > Kisky; Rizvi, Mohammad Faiz Abbas; Dannenberg, Andreas; Hiblot,
> > > Jean-Jacques; Heiko Schocher; Joe Hershberger; Simon Glass; Sam
> > > Protsenko; Bajjuri, Praneeth; Ruslan Trofymenko; Alistair Strachan;
> > > Davis, Andrew
> > > Subject: [EXTERNAL] Re: [PATCH 5/5] board: ti: beagleboneai: enable
> > > in am57xx_evm_defconfig
> > >
> > > On Thu, Nov 21, 2019 at 09:15:03AM +0530, Lokesh Vutla wrote:
> > > >
> > > >
> > > > On 21/11/19 3:39 AM, Caleb Robey wrote:
> > > > > Adding the configurations to the evm_defconfig file
> > > > >
> > > > > Signed-off-by: Jason Kridner <jdk@ti.com>
> > > > > Signed-off-by: Caleb Robey <c-robey@ti.com>
> > > > >
> > > > > ---
> > > > >  configs/am57xx_evm_defconfig  | 2 +-
> > > > > include/environment/ti/boot.h
> > > > > | 4 +++-
> > > > >  2 files changed, 4 insertions(+), 2 deletions(-)
> > > > >
> > > > > diff --git a/configs/am57xx_evm_defconfig
> > > > > b/configs/am57xx_evm_defconfig index 588e58947d..f59305794c
> > > > > 100644
> > > > > --- a/configs/am57xx_evm_defconfig
> > > > > +++ b/configs/am57xx_evm_defconfig
> > > > > @@ -38,7 +38,7 @@ CONFIG_CMD_BCB=y  CONFIG_OF_CONTROL=y
> > > > > CONFIG_SPL_OF_CONTROL=y
> CONFIG_DEFAULT_DEVICE_TREE="am572x-idk"
> > > > > -CONFIG_OF_LIST="am57xx-beagle-x15 am57xx-beagle-x15-revb1
> > > am57xx-beagle-x15-revc am572x-idk am571x-idk am574x-idk"
> > > > > +CONFIG_OF_LIST="am57xx-beagle-x15 am57xx-beagle-x15-revb1
> > > am57xx-beagle-x15-revc am5729-beagleboneai am572x-idk am571x-idk
> > > am574x-idk"
> > > > >  CONFIG_ENV_IS_IN_MMC=y
> > > > >  CONFIG_SYS_REDUNDAND_ENVIRONMENT=y
> > > > >  CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG=y
> > > > > diff --git a/include/environment/ti/boot.h
> > > > > b/include/environment/ti/boot.h index 684a744f31..d6f153c934
> > > > > 100644
> > > > > --- a/include/environment/ti/boot.h
> > > > > +++ b/include/environment/ti/boot.h
> > > > > @@ -10,7 +10,7 @@
> > > > >  #define __TI_BOOT_H
> > > > >
> > > > >  #ifndef CONSOLEDEV
> > > > > -#define CONSOLEDEV "ttyS2"
> > > > > +#define CONSOLEDEV "ttyS0"
> > > > >  #endif
> > > >
> > > > This will fail kernel to boot when using the default args. Can you
> > > > try updating this dynamically?
> > >
> > > Yes, am57xx_evm will need to perhaps leverage CONFIG_PREBOOT to run
> > > something to dynamically update the console environment variable at
> > > run time.
> > >
> >
> > This line seems to be working:
> > CONFIG_PREBOOT="if board_name am5729_beagleboneai; then setenv
> console ttyS0,115200; fi"
> >
> > Any concerns with that? I removed the change from boot.h and tested
> > with the am5729 IDK and beagleboneai board. Everything seems to be
> working just fine.
> 
> That literal string?  That can't work right, can it?  I think you need more like
> (borrowing from include/environment/ti/boot.h):
> if test $board_name = am5729_beagleboneai; then setenv console
> ttyS0,115200; fi

You're totally right - I think some default behaviors allowed them to boot.
It can be written 'if test $board_name am5729_beagleboneai;" but then that
will work.


> 
> --
> Tom