vbox的更動 7099 路徑 trunk/src/VBox/Devices/PC/BIOS/rombios.c

時間撮記:

2008-2-22 下午02:05:36 (17 年 以前)

作者:

vboxsync

訊息:

Use CMOS to store hard disk geometry for more than 4 disks

檔案:

• trunk/src/VBox/Devices/PC/BIOS/rombios.c (修改) (2 筆差異)

trunk/src/VBox/Devices/PC/BIOS/rombios.c

@@ -2442 +2442 @@
               chsgeo_base = 0x70;
               break;
+          case 4:
+              chsgeo_base = 0x40;
+              break;
+          case 5:
+              chsgeo_base = 0x48;
+              break;
+          case 6:
+              chsgeo_base = 0x50;
+              break;
+          case 7:
+              chsgeo_base = 0x58;
+              break;
           default:
               chsgeo_base = 0;
@@ -2453 +2465 @@
       else
       {
-          Bit32u temp_sectors = sectors;
-
-          //FIXME: only valid for LBA translation
-          lspt = 63;
-          temp_sectors /= 63;
-          lheads = temp_sectors / 1024;
-          if (lheads>128) lheads = 255;
-          else if (lheads>64) lheads = 128;
-          else if (lheads>32) lheads = 64;
-          else if (lheads>16) lheads = 32;
-          else lheads=16;
-          lcylinders = temp_sectors / lheads;
-
-          // clip to 1024 cylinders
-          if (lcylinders > 1024) lcylinders=1024;
-
-#if 0
           lcylinders = 0;
           lheads = 0;
           lspt = 0;
-#endif
       }
       BX_INFO("ata%d-%d: PCHS=%u/%d/%d LCHS=%u/%u/%u\n", channel, slave, cylinders, heads, spt, lcylinders, lheads, lspt);