Fix partition layout & bootup

buildroot-external/board/ova/barebox-env/boot/system0

@@ -1,5 +1,6 @@
 #!/bin/sh
 
-global.bootm.image="/mnt/disk0.3/boot/bzImage"
-global.linux.bootargs.dyn.root="root=/dev/sda3 rootfstype=squashfs ro"
+global.bootm.image="/mnt/disk1/boot/bzImage"
+
+global linux.bootargs.dyn.root="root=/dev/sda2 rootfstype=squashfs ro"
 

buildroot-external/board/ova/barebox-env/boot/system1

@@ -1,4 +1,5 @@
 #!/bin/sh
 
-global.bootm.image="/mnt/disk0.4/boot/bzImage"
-global.linux.bootargs.dyn.root="root=/dev/sda4 rootfstype=squashfs ro"
+global.bootm.image="/mnt/disk2/boot/bzImage"
+
+global linux.bootargs.dyn.root="root=/dev/sda3 rootfstype=squashfs ro"

buildroot-external/board/ova/barebox.config

@@ -3,17 +3,30 @@ CONFIG_MMU=y
 CONFIG_MALLOC_SIZE=0x0
 CONFIG_MALLOC_TLSF=y
 CONFIG_PROMPT="hassio-os:"
+CONFIG_GLOB=y
+CONFIG_GLOB_SORT=y
 CONFIG_CMDLINE_EDITING=y
 CONFIG_AUTO_COMPLETE=y
 CONFIG_BOOTM_SHOW_TYPE=y
 CONFIG_BOOTM_OFTREE=y
-CONFIG_DEFAULT_ENVIRONMENT_GENERIC_NEW=y
+CONFIG_FLEXIBLE_BOOTARGS=y
+CONFIG_PARTITION_DISK_EFI=y
+# CONFIG_PARTITION_DISK_EFI_GPT_NO_FORCE is not set
+# CONFIG_PARTITION_DISK_EFI_GPT_COMPARE is not set
 CONFIG_DEFAULT_ENVIRONMENT_PATH="/build/buildroot-external/board/ova/barebox-env"
 CONFIG_STATE=y
 CONFIG_BOOTCHOOSER=y
+CONFIG_CMD_BOOT=y
 CONFIG_CMD_UIMAGE=y
+CONFIG_CMD_AUTOMOUNT=y
+CONFIG_CMD_NV=y
 CONFIG_CMD_EXPORT=y
+CONFIG_CMD_GLOBAL=y
 CONFIG_CMD_MAGICVAR=y
+CONFIG_CMD_BASENAME=y
+CONFIG_CMD_DIRNAME=y
+CONFIG_CMD_READLINK=y
+CONFIG_CMD_GETOPT=y
 CONFIG_CMD_TIMEOUT=y
 CONFIG_CMD_DETECT=y
 CONFIG_CMD_STATE=y

buildroot-external/board/ova/genimage.cfg

@@ -12,7 +12,7 @@ image boot.vfat {
 image sdcard.img {
   hdimage {
     align = 1M
-    extended-partition = 2
+    extended-partition = 4
   }
 
   partition boot {