bootstd: Add an implementation of distro boot
Add a bootmeth driver which handles distro boot from a disk, so we can
boot a bootflow using this commonly used mechanism.
In effect, this provides the same functionality as the 'sysboot' command
and shares the same code. But the interface into it is via a bootmeth.
For now this requires the 'pxe' command be enabled. Future work may tidy
this up so that it can be used without CONFIG_CMDLINE being enabled.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/boot/Kconfig b/boot/Kconfig
index 9faa55a..d34c313 100644
--- a/boot/Kconfig
+++ b/boot/Kconfig
@@ -326,6 +326,21 @@
- support for selecting the ordering of bootdevs using the devicetree
as well as the "boot_targets" environment variable
+if BOOTSTD
+
+config BOOTMETH_DISTRO
+ bool "Bootdev support for distro boot"
+ depends on CMD_PXE
+ default y
+ help
+ Enables support for distro boot using bootdevs. This makes the
+ bootdevs look for a 'extlinux/extlinux.conf' on each filesystem
+ they scan.
+
+ This provides a way to try out standard boot on an existing boot flow.
+
+endif
+
config LEGACY_IMAGE_FORMAT
bool "Enable support for the legacy image format"
default y if !FIT_SIGNATURE