e2k: initial implementation

Elbrus 2000 only takes us a few lines to get up and running ;-)

features.in/e2k/README

@@ -0,0 +1 @@
+Эта фича содержит необходимое для поддержки систем архитектуры "Эльбрус".

features.in/e2k/config.mk

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+use/e2k:
+	@$(call add_feature)
+	@$(call set,KFLAVOURS,mcst-def)

features.in/e2k/rootfs/files/boot/boot.conf

@@ -0,0 +1,7 @@
+default=auto
+
+label=auto
+       partition=0
+       image=/image-@KVER@
+       initrd=/initrd-@KVER@.img
+       cmdline=console=tty0 consoleblank=0 hardreset root=UUID=@ROOTUUID@

features.in/e2k/rootfs/image-scripts.d/50-e2k-serial

@@ -0,0 +1,9 @@
+#!/bin/sh
+
+CFG="/boot/boot.conf"
+
+[ -f "$CFG" ] || exit 1
+[ -n "$GLOBAL_TTY_DEV" -a -n "$GLOBAL_TTY_RATE" ] || exit 0
+
+# tty0 first
+sed -i "s/console=tty0 /console=$GLOBAL_TTY_DEV,$GLOBAL_TTY_RATE &/" "$CFG"