source: xtideuniversalbios/trunk/XTIDE_Universal_BIOS/Src/VariablesAndDPTs/DrvDetectInfo.asm@ 595

Last change on this file since 595 was 592, checked in by Krister Nordvall, 6 years ago

Changes:

  • The problem with NASM in the previous revision (r591) has been fixed.
  • The colors used by the boot menu and hotkey bar can now be customized by selecting one of a number of pre-defined color themes. Suggestions for additional themes are more than welcome!
  • Large builds are now 10 KB. Small builds are still 8 KB with the exception of the Tiny build which is now 4 KB. In other words, builds are now as small as possible to make it easier to combine them with other BIOSes.
  • Added code to the library to improve drive error handling. XTIDECFG can now handle "Drive Not Ready" errors.
  • Fixed a couple of potential bugs in AtaID.asm (AtaID_GetMaxPioModeToAXandMinCycleTimeToCX); 1) ATA1.bPioMode was treated as a WORD variable. 2) ATA2.bPIOSupp was assumed to be non-zero which would result in PIO mode 3 being returned if the assumption was wrong.
  • Made the same changes in the equivalent function used by BIOSDRVS (DisplayPioModeInformationUsingAtaInfoFromDSBX in AtaInfo.asm).
  • Fixed a bug from r587 in PDC20x30.asm in PDC20x30_GetMaxPioModeToALandMinPioCycleTimeToBX.
  • Fixed a bug from r523 in XTIDECFG where Auto Configure would only set the IRQ on one IDE interface on AT-builds.
  • XTIDECFG will now restore the default settings for the "Serial port virtual device" when reselecting it in the list of device types. This makes it behave consistently for all device types.
  • The eAAM macro is now used regardless if USE_UNDOC_INTEL is defined or not because it is apparently supported on all processors including the NEC V20/V30 CPUs.
  • Renamed the EXCLUDE_FROM_XTIDE_UNIVERSAL_BIOS define to EXCLUDE_FROM_XUB.
  • Added a define to exclude unused library code from BIOSDRVS (EXCLUDE_FROM_BIOSDRVS). This makes it a lot smaller than in previous revisions.
  • All unnecessary CLD-instructions are now under a new define 'CLD_NEEDED' which is only enabled for the BIOS. It is disabled for XTIDECFG and BIOSDRVS but can be enabled if needed by adding this define to the respective makefile. This change was made because these unnecessary instructions are wasteful and should never be needed. In fact, they only serve to hide bugs (in other peoples code) which I strongly believe should be avoided. I recommend people making their own BIOSes from source to not use this define as it's extremely unlikely to be needed.
  • Updated the copyright info in SerDrive and changed an URL to point to the new site.
  • Updated the copyright info and version number in BIOSDRVS.
  • Updated the copyright info in XTIDECFG.
  • Optimizations in general.
File size: 3.3 KB
Line 
1; Project name : XTIDE Universal BIOS
2; Description : Functions for generating and accessing drive
3; information to be displayed on boot menu.
4
5;
6; XTIDE Universal BIOS and Associated Tools
7; Copyright (C) 2009-2010 by Tomi Tilli, 2011-2013 by XTIDE Universal BIOS Team.
8;
9; This program is free software; you can redistribute it and/or modify
10; it under the terms of the GNU General Public License as published by
11; the Free Software Foundation; either version 2 of the License, or
12; (at your option) any later version.
13;
14; This program is distributed in the hope that it will be useful,
15; but WITHOUT ANY WARRANTY; without even the implied warranty of
16; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17; GNU General Public License for more details.
18; Visit http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
19;
20
21; Section containing code
22SECTION .text
23
24;--------------------------------------------------------------------
25; Creates new DRVDETECTINFO struct for detected hard disk.
26;
27; DriveDetectInfo_CreateForHardDisk
28; Parameters:
29; DL: Drive number
30; DS:DI: Ptr to Disk Parameter Table
31; ES:SI: Ptr to 512-byte ATA information read from the drive
32; Returns:
33; ES:BX: Ptr to DRVDETECTINFO (if successful)
34; Corrupts registers:
35; AX, BX, CX, DX, DI
36;--------------------------------------------------------------------
37DriveDetectInfo_CreateForHardDisk:
38 call DriveDetectInfo_ConvertDPTtoBX ; ES:BX now points to new DRVDETECTINFO
39
40 ; Store Drive Name
41 push ds ; Preserve RAMVARS
42 push si
43
44 push es ; ES copied to DS
45 pop ds
46
47 add si, BYTE ATA1.strModel ; DS:SI now points drive name (Clears CF)
48%ifndef CHECK_FOR_UNUSED_ENTRYPOINTS
49%if DRVDETECTINFO.szDrvName = 0
50 mov di, bx
51%else
52 lea di, [bx+DRVDETECTINFO.szDrvName] ; ES:DI now points to name destination
53%endif
54%endif
55 mov cx, MAX_HARD_DISK_NAME_LENGTH / 2 ; Max number of WORDs allowed
56.CopyNextWord:
57 lodsw
58 xchg al, ah ; Change endianness
59 stosw
60 loop .CopyNextWord
61 xchg cx, ax ; Zero AX (CF already cleared from the ADD above)
62 stosw ; Terminate with NULL
63
64 pop si
65 pop ds
66
67 ret
68
69
70;--------------------------------------------------------------------
71; Returns offset to DRVDETECTINFO based on DPT pointer.
72;
73; DriveDetectInfo_ConvertDPTtoBX
74; Parameters:
75; DS:DI: DPT Pointer
76; Returns:
77; BX: Offset to DRVDETECTINFO struct
78; Corrupts registers:
79; AX
80;--------------------------------------------------------------------
81DriveDetectInfo_ConvertDPTtoBX:
82%ifndef CHECK_FOR_UNUSED_ENTRYPOINTS
83%if DPT_DRVDETECTINFO_SIZE_MULTIPLIER = 2
84%if BOOTVARS.rgDrvDetectInfo & 1 ; Should never be odd but better safe than sorry
85 lea bx, [di-RAMVARS_size]
86 eSHL_IM bx, 1
87 add bx, BOOTVARS.rgDrvDetectInfo
88%else
89 lea bx, [di-RAMVARS_size+(BOOTVARS.rgDrvDetectInfo/2)]
90 eSHL_IM bx, 1
91%endif
92%else
93%ifdef USE_186
94 lea bx, [di-RAMVARS_size]
95 imul bx, DPT_DRVDETECTINFO_SIZE_MULTIPLIER
96 add bx, BOOTVARS.rgDrvDetectInfo
97%else
98 lea ax, [di-RAMVARS_size] ; subtract off base of DPTs
99 mov bl, DPT_DRVDETECTINFO_SIZE_MULTIPLIER ; DRVDETECTINFO are a whole number multiple of DPT size
100 mul bl
101 add ax, BOOTVARS.rgDrvDetectInfo ; add base of DRVDETECTINFO
102 xchg bx, ax
103%endif
104%endif
105%endif
106 ret
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