* unknown/unsupported videomode at boot leads to return in config manager

* boot config manager now allows to totally disable DMA access to HD

git-svn-id: svn://kolibrios.org@514 a494cfbc-eb01-0410-851d-a64ba20cac60

kernel/trunk/blkdev/hd_drv.inc

@@ -54,6 +54,9 @@ hd_read:
     call  find_empty_slot       ; ret in edi
     cmp   [hd_error],0
     jne   return_01
+; DMA read is permitted if [allow_dma_access]=1 or 2
+        cmp     [allow_dma_access], 2
+        ja      .nodma
         cmp     [dma_hdd], 1
         jnz     .nodma
         call    hd_read_dma
@@ -229,8 +232,9 @@ write_cache:
     cmp   eax,[PARTITION_END]
     ja    danger
 
-        cmp     [allow_dma_write], 1
-        jnz     .nodma
+; DMA write is permitted only if [allow_dma_access]=1
+        cmp     [allow_dma_access], 2
+        jae     .nodma
         cmp     [dma_hdd], 1
         jnz     .nodma
 ; <EFBFBD><EFBFBD>ꥤ<EFBFBD><EFBFBD>塞 <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 楯<EFBFBD>窨 <EFBFBD><EFBFBD>᫥<EFBFBD><EFBFBD><EFBFBD><EFBFBD>⥫<EFBFBD><EFBFBD><EFBFBD><EFBFBD> ᥪ<EFBFBD><EFBFBD>஢ <EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD>饭<EFBFBD><EFBFBD> <EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
@@ -601,7 +605,7 @@ cache_chain_size        db      0
 cache_chain_started     db      0
 dma_task_switched       db      0
 dma_hdd         db      0
-allow_dma_write db      0
+allow_dma_access db      0
 endg
 
 align 4