[U-Boot] [PATCH v3] Ability to modify distro boot filename
Heinrich Schuchardt
xypron.glpk at gmx.de
Tue Nov 6 18:39:08 UTC 2018
On 11/6/18 1:23 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>
Reviewed-by: Heinrich Schuchardt <xypron.glpk at gmx.de>
>
> ---
>
> Changes in v3:
> - Moving path to config variable, rename `boot_syslinux_conf`
>
> Changes in v2:
> - Moving config variable from `boot_config` to `boot_extlinux_conf`
>
> include/config_distro_bootcmd.h | 7 ++++---
> 1 file changed, 4 insertions(+), 3 deletions(-)
>
> diff --git a/include/config_distro_bootcmd.h b/include/config_distro_bootcmd.h
> index 373fee78a9..5838eb3477 100644
> --- a/include/config_distro_bootcmd.h
> +++ b/include/config_distro_bootcmd.h
> @@ -355,15 +355,16 @@
> "boot_script_dhcp=boot.scr.uimg\0" \
> BOOTENV_BOOT_TARGETS \
> \
> + "boot_syslinux_conf=extlinux/extlinux.conf\0" \
> "boot_extlinux=" \
> "sysboot ${devtype} ${devnum}:${distro_bootpart} any " \
> - "${scriptaddr} ${prefix}extlinux/extlinux.conf\0" \
> + "${scriptaddr} ${prefix}${boot_syslinux_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}${boot_syslinux_conf}; then " \
> + "echo Found ${prefix}${boot_syslinux_conf}; " \
> "run boot_extlinux; " \
> "echo SCRIPT FAILED: continuing...; " \
> "fi\0" \
>
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