Changeset 138

Timestamp:

Apr 8, 2017, 12:27:35 AM (8 years ago)

Author:

Ben Rietbroek

Message:

Removed all the now obsolete storage variables [v1.1.1-testing]

There may still be some references in disabled debug-code, but we'll
fix that later.

CAUTION:
This is a testbuild !
AirBoot uses the BIOS to access disks and a small coding error can trash
partition tables or other vital disk structures. You are advised to make
backups of TRACK0 and EBRs before using this testbuild. More info at:
​https://rousseaux.github.io/netlabs.air-boot/pdf/AirBoot-v1.1.0-manual.pdf

File:

• trunk/bootcode/airboot.asm (modified) (6 diffs)

trunk/bootcode/airboot.asm

@@ -2186 +2186 @@
 ;                                                            START OF BSS DATA
 ; -----------------------------------------------------------------------------
-
 ; This space actually gets initialized in PreCrap to NUL (till EndOfVariables)
 BeginOfVariables:
@@ -2254 +2253 @@
 ;                                                                   XREF TABLE
 ; -----------------------------------------------------------------------------
-
 ; X-Reference Table (holds new partnr, index is old part nr)
 ; BOOKMARK: Xref Table
@@ -2264 +2262 @@
 ;                                                               VOLUME LETTERS
 ; -----------------------------------------------------------------------------
-
 ; Volume-Letters
 ; 0 - no LVM support
@@ -2382 +2379 @@
 
 ; -----------------------------------------------------------------------------
-;                                                           ECS PHASE1 RELATED
-; -----------------------------------------------------------------------------
-Phase1Active                db      ?
-OldPartitionCount           db      ?
-                            ALIGN   16
-
-
-; -----------------------------------------------------------------------------
-;                                                              DISK PARAMETERS
-; -----------------------------------------------------------------------------
-HugeDisk                    db      MaxDisks  dup(?)
-TrueSecs                    dd      MaxDisks  dup(?)
-                            ALIGN   16
-
-; BIOS geometry of the boot-drive
-; Note that heads cannot be 256 due to legacy DOS/BIOS bug
-; If Int13X is supported those values are used, otherwise the legacy values.
-BIOS_Cyls                   dd      MaxDisks  dup(?)
-BIOS_Heads                  dd      MaxDisks  dup(?)
-BIOS_Secs                   dd      MaxDisks  dup(?)
-BIOS_Bytes                  dw      MaxDisks  dup(?)
-BIOS_TotalSecs              dq      MaxDisks  dup(?)
-                            ALIGN   16
-
-; LBA geometry of the boot-drive
-; Note that these values are taken from the BPB of a partition boot-record
-LVM_Cyls                    dd      MaxDisks  dup(?)
-LVM_Heads                   dd      MaxDisks  dup(?)
-LVM_Secs                    dd      MaxDisks  dup(?)
-LVM_Bytes                   dw      MaxDisks  dup(?)
-LVM_TotalSecs               dq      MaxDisks  dup(?)
-LVM_MasterSecs              dd      MaxDisks  dup(?)
-                            ALIGN   16
-
-; OS/2 geometry of the boot-drive
-; Note that these values are taken from the BPB of a partition boot-record
-LOG_Cyls                    dd      MaxDisks  dup(?)
-LOG_Heads                   dd      MaxDisks  dup(?)
-LOG_Secs                    dd      MaxDisks  dup(?)
-LOG_Bytes                   dw      MaxDisks  dup(?)
-LOG_TotalSecs               dq      MaxDisks  dup(?)
-                            ALIGN   16
-
+;                                                         LVM DRIVE-LETTER MAP
+; -----------------------------------------------------------------------------
 ; Get's initialized at startup to: 00000011111111111111111111111100b
 ; Meaning A,B not free; C-Z free, rest unused. (right to left)
@@ -2431 +2387 @@
                             ALIGN   16
 
-; LBA address of master LVM sector, zero if non-existant
-MasterLVMLBA                dd      MaxDisks  dup(?)
+
+; -----------------------------------------------------------------------------
+;                                                          OS/2 PHASE1 RELATED
+; -----------------------------------------------------------------------------
+Phase1Active                db      ?
+OldPartitionCount           db      ?
                             ALIGN   16
 
+
+; -----------------------------------------------------------------------------
+;                                         ARRAY OF DISK INFORMATION STRUCTURES
+; -----------------------------------------------------------------------------
 ; Array of DISKINFO structures
 DiskInformation             db      MaxDisks  dup(DISKINFO_Size dup(?))
                             ALIGN   16
 
+
 ; -----------------------------------------------------------------------------
 ;                                                                   INT13X DAP
 ; -----------------------------------------------------------------------------
-
 ; Disk Address Package that holds information for LBA-access using INT13X
 INT13X_DAP                  db      ?       ; Size of paket, inserted by code
@@ -2453 +2417 @@
                             ALIGN   16
 
-;
-; BOOKMARK: Temporary buffer for 48h INT13X bios call.
-;
-
-            ; Size of the buffer.
-            ; this param *must* be filled in.
-            ; Code inserts it.
-i13xbuf     dw  1   dup (?)
-
-            ; The buffer itself.
-            db  126 dup(?)
-
-            ; Size of buffer calculated.
-            ; (excluding the size word at the start).
-            i13xbuf_size = $-offset i13xbuf-2
-            ALIGN   16
-
-            ; Some debug area.
-dbg_scratch db  512 dup(?)
-            ALIGN   16
+
+; -----------------------------------------------------------------------------
+;                                                                        DEBUG
+; -----------------------------------------------------------------------------
+; Some debug area.
+dbg_scratch                 db      512 dup(?)
+                            ALIGN   16