source: xtideuniversalbios/trunk/XTIDE_Universal_BIOS/Inc/RomVars.inc@ 375

Last change on this file since 375 was 363, checked in by aitotat@…, 12 years ago

Changes to XTIDE Universal BIOS:

  • Added Advanced ATA Module (MODULE_ADVANCED_ATA) with native support for QDI Vision QD6500 and QD6580 VLB IDE Controllers.
  • Hopefully optimized IDE transfer functions for 8088 (replaced some memory accesses from WORD to BYTE).
  • XT build does not fit in 8k at the moment!!!
File size: 5.2 KB
Line 
1; Project name : XTIDE Universal BIOS
2; Description : Defines for ROMVARS struct containing variables stored
3; in BIOS ROM.
4%ifndef ROMVARS_INC
5%define ROMVARS_INC
6
7; ROM Variables. Written to the ROM image before flashing.
8struc ROMVARS
9 .wRomSign resb 2 ; ROM Signature (AA55h)
10 .bRomSize resb 1 ; ROM size in 512 byte blocks
11 .rgbJump resb 3 ; First instruction to ROM init (jmp)
12
13 .rgbSign resb 8 ; Signature for XTIDE Configurator Program
14 .szTitle resb 31 ; BIOS title string
15 .szVersion resb 25 ; BIOS version string
16
17 .wFlags resb 2 ; Word for ROM flags
18 .wDisplayMode resb 2 ; Display mode for boot menu
19 .wfDisplayBootMenu: ; Zero = no Boot Menu, non-zero = Boot Menu timeout
20 .wBootTimeout resb 2 ; Boot Menu selection timeout in system timer ticks
21 .bIdeCnt resb 1 ; Number of available IDE controllers
22 .bBootDrv resb 1 ; Boot Menu default drive
23 .bMinFddCnt resb 1 ; Minimum number of Floppy Drives
24 .bStealSize resb 1 ; Number of 1kB blocks stolen from 640kB base RAM
25
26 .ideVarsBegin:
27 .ideVars0 resb IDEVARS_size
28 .ideVars1 resb IDEVARS_size
29 .ideVars2 resb IDEVARS_size
30 .ideVars3 resb IDEVARS_size
31
32%ifdef MODULE_SERIAL
33 .ideVarsSerialAuto resb IDEVARS_size
34%endif
35
36 .ideVarsEnd:
37endstruc
38
39%ifndef CHECK_FOR_UNUSED_ENTRYPOINTS
40 %if ROMVARS.ideVarsEnd & 0xff00 <> 0
41 %error ".ideVars structures must fit within the first 256 bytes of the ROM image"
42 %endif
43 %if (ROMVARS.ideVarsEnd - ROMVARS.ideVarsBegin) = 0
44 %error "there must be at least one .ideVars structure, it would be bizarre if this were not true, but it is assumed in the ah0h reset code."
45 %endif
46%endif
47
48; Bit defines for ROMVARS.wFlags
49FLG_ROMVARS_FULLMODE EQU (1<<0) ; Full operating mode (steals base RAM, supports EBIOS etc.)
50FLG_ROMVARS_DRVXLAT EQU (1<<2) ; Enable drive number translation
51FLG_ROMVARS_SERIAL_SCANDETECT EQU (1<<3) ; Scan COM ports at the end of drive detection. Can also be invoked
52 ; by holding down the ALT key at the end of drive detection.
53 ; (Conveniently, this is 8, a fact we exploit when testing the bit)
54FLG_ROMVARS_MODULE_ADVATA EQU (1<<4) ; Here in case the configuration needs to know functionality is present
55FLG_ROMVARS_MODULE_JRIDE EQU (1<<5) ; Here in case the configuration needs to know functionality is present
56FLG_ROMVARS_MODULE_SERIAL EQU (1<<6) ; Here in case the configuration needs to know functionality is present
57FLG_ROMVARS_MODULE_EBIOS EQU (1<<7) ; Here in case the configuration needs to know functionality is present
58
59; Boot Menu Display Modes (see Assembly Library Display.inc for standard modes)
60DEFAULT_TEXT_MODE EQU 4
61
62
63; Controller specific variables
64struc IDEVARS
65;;; Word 0
66 .wSerialPortAndBaud: ; Serial connection port (low, divided by 4) and baud rate divisor (high)
67 .wPort: ; IDE Base Port for Command Block (usual) Registers
68 .bSerialPort resb 1
69 .bSerialBaud resb 1
70
71;;; Word 1
72 .wPortCtrl:
73 .bSerialUnused resb 1 ; IDE Base Port for Control Block Registers
74
75 .wSerialCOMPortCharAndDevice: ; In DetectPrint, we grab the COM Port char and Device at the same time
76 .bSerialCOMPortChar resb 1 ; Serial connection COM port number/letter
77
78;;; Word 2
79 .bDevice resb 1 ; Device type
80
81 .bIRQ resb 1 ; Interrupt Request Number
82
83;;; And more...
84 .drvParamsMaster resb DRVPARAMS_size
85 .drvParamsSlave resb DRVPARAMS_size
86endstruc
87
88%ifndef CHECK_FOR_UNUSED_ENTRYPOINTS
89 %if IDEVARS.bSerialCOMPortChar+1 != IDEVARS.bDevice
90 %error "IDEVARS.bSerialCOMPortChar needs to come immediately before IDEVARS.bDevice so that both bytes can be fetched at the same time inside DetectPrint.asm"
91 %endif
92%endif
93
94; Default values for Port and PortCtrl, shared with the configurator
95;
96DEVICE_XTIDE_DEFAULT_PORT EQU 300h
97DEVICE_XTIDE_DEFAULT_PORTCTRL EQU 308h
98DEVICE_ATA_DEFAULT_PORT EQU 1F0h
99DEVICE_ATA_DEFAULT_PORTCTRL EQU 3F0h
100DEVICE_ATA_DEFAULT_SECONDARY_PORT EQU 170h
101DEVICE_ATA_DEFAULT_SECONDARY_PORTCTRL EQU 370h
102
103; Device types for IDEVARS.bDevice
104;
105DEVICE_XTIDE_REV1 EQU (0<<1)
106DEVICE_XTIDE_REV2 EQU (1<<1) ; Or rev 1 with swapped A0 and A3 (chuck mod)
107DEVICE_FAST_XTIDE EQU (2<<1) ; (CPLD v2 project)
108DEVICE_16BIT_ATA EQU (3<<1)
109DEVICE_32BIT_ATA EQU (4<<1)
110DEVICE_SERIAL_PORT EQU (5<<1)
111DEVICE_JRIDE_ISA EQU (6<<1)
112
113
114; Master/Slave drive specific parameters
115struc DRVPARAMS
116 .wFlags resb 2 ; Drive flags
117 .dwMaximumLBA: ; User specified maximum number of sectors
118 .wCylinders resb 2 ; User specified cylinders (1...16383)
119 .wHeadsAndSectors:
120 .bHeads resb 1 ; User specified Heads (1...16)
121 .bSect resb 1 ; User specified Sectors per track (1...63)
122endstruc
123
124; Bit defines for DRVPARAMS.wFlags
125MASK_DRVPARAMS_WRITECACHE EQU (3<<0) ; Drive internal write cache settings (must start at bit 0)
126FLG_DRVPARAMS_BLOCKMODE EQU (1<<2) ; Enable Block mode transfers
127FLG_DRVPARAMS_USERCHS EQU (1<<3) ; User specified P-CHS values
128FLG_DRVPARAMS_USERLBA EQU (1<<4) ; User specified LBA values
129
130; Drive Write Cache values for DRVPARAMS.wFlags.MASK_DRVPARAMS_WRITECACHE
131DEFAULT_WRITE_CACHE EQU 0 ; Must be 0
132DISABLE_WRITE_CACHE EQU 1
133ENABLE_WRITE_CACHE EQU 2
134
135%endif ; ROMVARS_INC
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