[U-Boot] [PATCH v2] Ability to modify distro boot filename

[Martyn Welch]

On Mon, 2018-11-05 at 20:43 +0100, Heinrich Schuchardt wrote:
> On 11/05/2018 07:13 PM, Martyn Welch wrote:
> > Add in the ability to modify the distro boot filename. Whilst not
> > immediately useful in normal usage, it allows an alternative
> > configuration to be provided when other u-boot functionality is
> > used, such
> > as bootcount limit, to fallback to an alternative boot
> > configuration. In
> > this case we can follow the same boot path as for normal boot, just
> > using an alternatively named configuration file.
> > 
> > For example, by providing the following `altbootcmd` when bootcount
> > is in
> > use:
> > 
> > altbootcmd=setenv boot_extlinx_conf extlinux-rollback.conf; \
> > 	run distro_bootcmd
> > 
> > Signed-off-by: Martyn Welch <martyn.welch at collabora.co.uk>
> > 
> > ---
> > 
> > Changes in v2:
> > - Moving config variable from `boot_config` to `boot_extlinux_conf`
> > 
> >  include/config_distro_bootcmd.h | 10 +++++++---
> >  1 file changed, 7 insertions(+), 3 deletions(-)
> > 
> > diff --git a/include/config_distro_bootcmd.h
> > b/include/config_distro_bootcmd.h
> > index 373fee78a9..1e9f6cb31a 100644
> > --- a/include/config_distro_bootcmd.h
> > +++ b/include/config_distro_bootcmd.h
> > @@ -355,15 +355,19 @@
> >  	"boot_script_dhcp=boot.scr.uimg\0" \
> >  	BOOTENV_BOOT_TARGETS \
> >  	\
> > +	"boot_extlinux_conf=extlinux.conf\0" \
> 
> 
> Why do you only put "extlinux.conf" into the new variable and not
> "extlinux/extlinux.conf" and call the variable boot_syslinux_conf.
> 
> Wouldn't this provide more flexibility?
> 

Sounds good to me.

Martyn

> Best regards
> 
> >  	"boot_extlinux="                                          
> >         \
> >  		"sysboot ${devtype} ${devnum}:${distro_bootpart}
> > any "    \
> > -			"${scriptaddr}
> > ${prefix}extlinux/extlinux.conf\0" \
> > +			"${scriptaddr}
> > "                                  \
> > +			"${prefix}extlinux/${boot_extlinux_conf}\0
> > "       \
> >  	\
> >  	"scan_dev_for_extlinux="                                  
> >         \
> >  		"if test -e ${devtype}
> > "                                  \
> >  				"${devnum}:${distro_bootpart}
> > "           \
> > -				"${prefix}extlinux/extlinux.conf;
> > then "  \
> > -			"echo Found
> > ${prefix}extlinux/extlinux.conf; "    \
> > +				"${prefix}extlinux/${boot_extlinux
> > _conf}; " \
> > +				"then
> > "                                   \
> > +			"echo Found
> > "                                     \
> > +				"${prefix}extlinux/${boot_extlinux
> > _conf}; " \
> >  			"run boot_extlinux;
> > "                             \
> >  			"echo SCRIPT FAILED: continuing...;
> > "             \
> >  		"fi\0"                                            
> >         \
> > 
> 
>