Add extended_primary_loader to autobuild.

* Build fat1x, fat32, cdfs, after_win loaders.
* Set use_lba=1 by default in fat32 loader.
* Build kolibri.raw: flash / hdd image.
* Add example config.ini file.
* Add an option (config file and screen) to not load ramdisk image.
* Add an option (config file only) to set /sys path.

Now you can boot without a ramdisk from a storage that is supported
by the kernel itself, i.e. without loadable drivers. Thus you can not
load the system without a ramdisk from SATA/AHCI and USB drives.

git-svn-id: svn://kolibrios.org@8091 a494cfbc-eb01-0410-851d-a64ba20cac60

kernel/trunk/kernel.asm

@@ -138,7 +138,11 @@ pci_data_sel   =  pci_data_32-gdts
 ; places revision number there.
 if ~ defined UEFI
   bootbios:
-  file 'bootbios.bin'
+  if ~ defined extended_primary_loader
+    file 'bootbios.bin'
+  else
+    file 'bootbios.bin.ext_loader'
+  end if
   if __REV__ > 0
     cur_pos = 0
     cnt = 0
@@ -697,8 +701,10 @@ endg
         call    PIT_init
 
 ; Register ramdisk file system
+if ~ defined extended_primary_loader
         cmp     [BOOT.rd_load_from], RD_LOAD_FROM_HD    ; will be loaded later
         je      @f
+end if
         cmp     [BOOT.rd_load_from], RD_LOAD_FROM_NONE
         je      @f
         call    register_ramdisk
@@ -1099,6 +1105,14 @@ boot_log:
 
         ret
 
+;-----------------------------------------------------------------------------
+; Register ramdisk file system
+register_ramdisk:
+        mov     esi, boot_initramdisk
+        call    boot_log
+        call    ramdisk_init
+        ret
+
 ; in: edx -> APPDATA for OS/IDLE slot
 ; in: ebx = stack base
 proc setup_os_slot