coco3: bugfix: mbr.c adjust offsets/lens for 512b blocks.

diff --git a/Kernel/platform-coco3/mbr.c b/Kernel/platform-coco3/mbr.c
index b17228d..6239dce 100644 (file)
--- a/Kernel/platform-coco3/mbr.c
+++ b/Kernel/platform-coco3/mbr.c
@@ -37,12 +37,14 @@ void mbr_parse(char letter)
 {
        boot_record_t *br;
        uint8_t i,k = 0;
-       
+       uint32_t tstart;
+       uint32_t tlen;
+
        kprintf("hd%c: ", letter);
-       
+
        /* allocate temporary memory */
        br = (boot_record_t *)tmpbuf();
-       
+
        blk_op.is_read = true;
        blk_op.is_user = false;
        blk_op.addr = br;
@@ -61,9 +63,20 @@ void mbr_parse(char letter)
                if( ! br->partition[i].flags ){
                        continue;
                }
+               /* if valid entry, then adjust offset/len to blocks*/
                else{
-                       blk_op.blkdev->lba_first[k] = br->partition[i].start;
-                       blk_op.blkdev->lba_count[k] = br->partition[i].len;
+                       tstart = br->partition[i].start;
+                       tlen = br->partition[i].len;
+                       if( !br->secz ){
+                               tstart >>= 1;
+                               tlen >>= 1;
+                       }
+                       else{
+                               tstart <<= (br->secz-1);
+                               tlen <<= (br->secz-1);
+                       }                       
+                       blk_op.blkdev->lba_first[k] = tstart;
+                       blk_op.blkdev->lba_count[k] = tlen;
                        kprintf("hd%c%d ", letter, k+1);
                        k++;
                }