x86: Add a minimal example SoC along with a board

The min86 example SoC code along with the example mainboard
should serve as a minimal example how a buildable x86 SoC code
base can look like.

This can serve, for instance, as a basis to add new SoCs to
coreboot. Starting with a buildable commit should help with
the review of the actual code, and also avoid any regressions
when common coreboot code changes.

As the example code itself is build-tested, it should advance
with coreboot and can't rot like documentation might. It also
serves as a check what APIs need to be implemented with the
default Kconfig settings.

Change-Id: Id76ab15fe77ae3e405c43f9c8677694f178be112
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45710
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

1 files changed, 15 insertions, 0 deletions

diff --git a/src/mainboard/example/Kconfig b/src/mainboard/example/Kconfig
new file mode 100644
index 0000000000..5afc8ee5a9
--- /dev/null
+++ b/src/mainboard/example/Kconfig
@@ -0,0 +1,15 @@
+if VENDOR_EXAMPLE
+
+choice
+	prompt "Mainboard model"
+
+source "src/mainboard/example/*/Kconfig.name"
+
+endchoice
+
+source "src/mainboard/example/*/Kconfig"
+
+config MAINBOARD_VENDOR
+	default "Example"
+
+endif # VENDOR_EXAMPLE