source: xtideuniversalbios/trunk/XTIDE_Universal_BIOS/Inc/RomVars.inc@ 202

Last change on this file since 202 was 200, checked in by gregli@…, 13 years ago

Added logic to skip scanning COM ports if a COM port was already found during the normal detection process, to avoid finding the same serial drive twice and preseting the OS with two drives which in reality point to the same physical file on the server. Also added logic to skip scanning for the slave serial drive if the master was not found. And various small optimizations.
File size: 6.4 KB
RevLine 
[90]1; Project name : XTIDE Universal BIOS
[3]2; Description : Defines for ROMVARS struct containing variables stored
3; in BIOS ROM.
4%ifndef ROMVARS_INC
5%define ROMVARS_INC
6
[181]7; ROM Variables. Written to the ROM image before flashing.
[3]8struc ROMVARS
[181]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)
[90]12
[181]13 .rgbSign resb 8 ; Signature for XTIDE Configurator Program
14 .szTitle resb 31 ; BIOS title string
15 .szVersion resb 25 ; BIOS version string
[90]16
[181]17 .wFlags resb 2 ; Word for ROM flags
18 .wDisplayMode resb 2 ; Display mode for boot menu
19 .wBootTimeout resb 2 ; Boot Menu selection timeout in system timer ticks
20 .bIdeCnt resb 1 ; Number of available IDE controllers
21 .bBootDrv resb 1 ; Boot Menu default drive
22 .bMinFddCnt resb 1 ; Minimum number of Floppy Drives
23 .bStealSize resb 1 ; Number of 1kB blocks stolen from 640kB base RAM
[90]24
[181]25 .ideVars0 resb IDEVARS_size
26 .ideVars1 resb IDEVARS_size
27 .ideVars2 resb IDEVARS_size
28 .ideVars3 resb IDEVARS_size
[175]29
[176]30%ifdef MODULE_SERIAL
[175]31 .ideVarsSerialAuto resb IDEVARS_size
[176]32%endif
[3]33endstruc
34
35; Bit defines for ROMVARS.wFlags
[199]36FLG_ROMVARS_FULLMODE EQU (1<<0) ; Full operating mode (steals base RAM, supports EBIOS etc.)
37FLG_ROMVARS_DRVXLAT EQU (1<<2) ; Enable drive number translation
38FLG_ROMVARS_SERIAL_SCANDETECT EQU (1<<3) ; Scan COM ports at the end of drive detection. Can also be invoked
39 ; by holding down the ALT key at the end of drive detection.
40 ; (Conveniently, this is 8, a fact we exploit when testing the bit)
41FLG_ROMVARS_MODULE_SERIAL EQU (1<<6) ; Here in case the configuration needs to know functionality is present
42FLG_ROMVARS_MODULE_EBIOS EQU (1<<7) ; Here in case the configuration needs to know functionality is present
[176]43
[143]44; Boot Menu Display Modes (see Assembly Library Display.inc for standard modes)
45DEFAULT_TEXT_MODE EQU 4
[3]46
[143]47
[3]48; Controller specific variables
49struc IDEVARS
[196]50 .wPort: ; IDE Base Port for Command Block (usual) Registers
51 .bSerialCOMDigit resb 1 ; Serial Device COM Port digit
52 .bSerialPackedPortAndBaud resb 1 ; Serial Device packed port and baud
53
54 .wPortCtrl: ; IDE Base Port for Control Block Registers
55 .wSerialPackedPrintBaud resb 2 ; Serial Device packed baud rate for printing
56
57 .bDevice resb 1 ; Device type
58 .bIRQ resb 1 ; Interrupt Request Number
59 .drvParamsMaster resb DRVPARAMS_size
60 .drvParamsSlave resb DRVPARAMS_size
[3]61endstruc
62
[199]63; Default values for Port and PortCtrl, shared with the configurator
64;
65DEVICE_XTIDE_DEFAULT_PORT EQU 300h
66DEVICE_XTIDE_DEFAULT_PORTCTRL EQU 308h
67DEVICE_ATA_DEFAULT_PORT EQU 1F0h
68DEVICE_ATA_DEFAULT_PORTCTRL EQU 3F0h
69DEVICE_SERIAL_DEFAULT_COM EQU 0 ; COM1
70DEVICE_SERIAL_DEFAULT_BAUD EQU 1 ; 9600
71
[175]72; Device types for IDEVARS.bDevice
[199]73;
[150]74DEVICE_8BIT_DUAL_PORT_XTIDE EQU (0<<1)
75DEVICE_XTIDE_WITH_REVERSED_A3_AND_A0 EQU (1<<1)
76DEVICE_8BIT_SINGLE_PORT EQU (2<<1)
77DEVICE_16BIT_ATA EQU (3<<1)
78DEVICE_32BIT_ATA EQU (4<<1)
79DEVICE_SERIAL_PORT EQU (5<<1)
[3]80
[199]81
[3]82; Master/Slave drive specific parameters
83struc DRVPARAMS
84 .wFlags resb 2 ; Drive flags
85 .wCylinders resb 2 ; User specified cylinders (1...16383)
[99]86 .wHeadsAndSectors:
87 .bHeads resb 1 ; User specified Heads (1...16)
[3]88 .bSect resb 1 ; User specified Sectors per track (1...63)
89endstruc
90
91; Bit defines for DRVPARAMS.wFlags
92FLG_DRVPARAMS_USERCHS EQU (1<<0) ; User specified P-CHS values
93FLG_DRVPARAMS_BLOCKMODE EQU (1<<1) ; Enable Block mode transfers
94
95
[199]96; Defines for IDEVARS.bSerialPackedPortAndBaud (same format used by DPT.bSerialPortAndBaud)
97;
98; pppp ppbb
99; i/o port address = p * 2 + 240h
100; baud rate = b, where 00 = 2400, 01 = 9600, 10 = 38.4K, 11 = 115.2K
101;
[200]102; 240h/2400baud corresponds to 0 for a PackedPortAndBaud value, which is reserved (in case we need
103; it to know if a value has been set). Which is why ..._MINPORT is 248h.
104;
105DEVICE_SERIAL_PACKEDPORTANDBAUD_PORTMASK EQU 0fch
106DEVICE_SERIAL_PACKEDPORTANDBAUD_PORTBITS EQU 03fh
107DEVICE_SERIAL_PACKEDPORTANDBAUD_PORT_FIELD_POSITION EQU 2
108DEVICE_SERIAL_PACKEDPORTANDBAUD_STARTINGPORT EQU 240h
109DEVICE_SERIAL_PACKEDPORTANDBAUD_MINPORT EQU 248h ; minimum port value that the user can set
110DEVICE_SERIAL_PACKEDPORTANDBAUD_MAXPORT EQU 438h ; or (..._PORTMASK << 1) + ..._STARTINGPORT
[199]111
[200]112DEVICE_SERIAL_PACKEDPORTANDBAUD_BAUDMASK EQU 3h
113DEVICE_SERIAL_PACKEDPORTANDBAUD_BAUDBITS EQU 3h
114DEVICE_SERIAL_PACKEDPORTANDBAUD_BAUD_FIELD_POSITION EQU 0
115
[199]116; Defines for IDEVARS.wSerialPrintBaud
117;
118; pppp ppnn nnnn nnnn
119; unsigned number to output = n
120; postfix character = p + '0' (designed for '0' and 'K', although other values are possible)
121;
122; Note that the contents of this word is only used for printing by the BIOS when a drive is detected.
123; It is not used for any other purpose, and so long as it conforms to the structure, any values can be used.
124;
125DEVICE_SERIAL_PRINTBAUD_NUMBERMASK EQU 003ffh
126DEVICE_SERIAL_PRINTBAUD_POSTCHARMASK EQU 0fc00h
127DEVICE_SERIAL_PRINTBAUD_POSTCHARADD EQU '0'
128;
129; These are defined here (instead of in the configurator) for consistency since they could also be used
130; in main.asm as a default for an IDEVARS structure.
131;
132DEVICE_SERIAL_PRINTBAUD_2400 EQU ((('0'-DEVICE_SERIAL_PRINTBAUD_POSTCHARADD)<<10) | 240) ; Prints "2400"
133DEVICE_SERIAL_PRINTBAUD_9600 EQU ((('0'-DEVICE_SERIAL_PRINTBAUD_POSTCHARADD)<<10) | 960) ; Prints "9600"
134DEVICE_SERIAL_PRINTBAUD_38_4 EQU ((('K'-DEVICE_SERIAL_PRINTBAUD_POSTCHARADD)<<10) | 38) ; Prints "38K"
135DEVICE_SERIAL_PRINTBAUD_115_2 EQU ((('K'-DEVICE_SERIAL_PRINTBAUD_POSTCHARADD)<<10) | 115) ; Prints "115K"
136
137;
138; COM Number to I/O Port Address Mapping
139;
140; COM Number: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12
141; Corresponds to I/O port: 3f8, 2f8, 3e8, 2e8, 2f0, 3e0, 2e0, 260, 368, 268, 360, 270
142; Corresponds to Packed I/O port (hex): 37, 17, 35, 15, 16, 34, 14, 4, 25, 5, 24, 6
143;
144DEVICE_SERIAL_COM1 EQU 3f8h
145DEVICE_SERIAL_COM2 EQU 2f8h
146DEVICE_SERIAL_COM3 EQU 3e8h
147DEVICE_SERIAL_COM4 EQU 2e8h
148DEVICE_SERIAL_COM5 EQU 2f0h
149DEVICE_SERIAL_COM6 EQU 3e0h
150DEVICE_SERIAL_COM7 EQU 2e0h
151DEVICE_SERIAL_COM8 EQU 260h
152DEVICE_SERIAL_COM9 EQU 368h
153DEVICE_SERIAL_COMA EQU 268h
154DEVICE_SERIAL_COMB EQU 360h
155DEVICE_SERIAL_COMC EQU 270h
156
157
[3]158%endif ; ROMVARS_INC
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