source: xtideuniversalbios/trunk/XTIDE_Universal_BIOS/Inc/RomVars.inc @ 233

Last change on this file since 233 was 233, checked in by gregli@…, 12 years ago

Serial Port: split single byte port and baud into two bytes, taking advantage of the two bytes in DPT_SERIAL, which supports more serial baud rates and in particular fixed a bug where a 4x client machine couldn't talk to a 115.2K server machine. This is a wide change, touching lots of files, but most are shallow changes. DetectPrint.asm took the most significant changes, now it calculates the baud rate to display instead of using characters provided by the Configurator. The Configurator now has a new menu flag, FLG_MENUITEM_CHOICESTRINGS, for specifying that values are not linear and they should be lookedup rather than indexed. Finally, another important bug fixed here is that in some error cases, the serial port code could get into an infinite loop waiting ont the hardware; now it has a timeout.
File size: 4.8 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    .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
24
25    .ideVars0           resb    IDEVARS_size
26    .ideVars1           resb    IDEVARS_size
27    .ideVars2           resb    IDEVARS_size
28    .ideVars3           resb    IDEVARS_size
29
30%ifdef MODULE_SERIAL
31    .ideVarsSerialAuto  resb    IDEVARS_size
32%endif
33endstruc
34
35; Bit defines for ROMVARS.wFlags
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
43
44; Boot Menu Display Modes (see Assembly Library Display.inc for standard modes)
45DEFAULT_TEXT_MODE       EQU 4
46
47
48; Controller specific variables
49struc IDEVARS
50;;; Word 0
51    .wSerialPortAndBaud:                    ; Serial connection port (low, divided by 4) and baud rate divisor (high)
52    .wPort:                                 ; IDE Base Port for Command Block (usual) Registers
53    .bSerialPort                resb    1
54    .bSerialBaud                resb    1
55
56;;; Word 1
57    .wPortCtrl:
58    .bSerialUnused              resb    1   ; IDE Base Port for Control Block Registers
59
60    .wSerialCOMPortCharAndDevice:           ; In DetectPrint, we grab the COM Port char and Device at the same time
61    .bSerialCOMPortChar         resb    1   ; Serial connection COM port number/letter
62
63;;; Word 2
64    .bDevice                    resb    1   ; Device type
65
66    .bIRQ                       resb    1   ; Interrupt Request Number
67
68;;; And more...
69    .drvParamsMaster            resb    DRVPARAMS_size
70    .drvParamsSlave             resb    DRVPARAMS_size
71endstruc
72
73%if IDEVARS.bSerialCOMPortChar+1 != IDEVARS.bDevice
74%erorr "IDEVARS.bSerialCOMPortChar needs to come immediately before IDEVARS.bDevice so that both bytes can be fetched at the same time inside DetectPrint.asm"
75%endif
76
77; Default values for Port and PortCtrl, shared with the configurator
78;
79DEVICE_XTIDE_DEFAULT_PORT               EQU     300h
80DEVICE_XTIDE_DEFAULT_PORTCTRL           EQU     308h
81DEVICE_ATA_DEFAULT_PORT                 EQU     1F0h
82DEVICE_ATA_DEFAULT_PORTCTRL             EQU     3F0h
83
84; Device types for IDEVARS.bDevice
85;
86DEVICE_8BIT_DUAL_PORT_XTIDE             EQU (0<<1)
87DEVICE_XTIDE_WITH_REVERSED_A3_AND_A0    EQU (1<<1)
88DEVICE_8BIT_SINGLE_PORT                 EQU (2<<1)
89DEVICE_16BIT_ATA                        EQU (3<<1)
90DEVICE_32BIT_ATA                        EQU (4<<1)
91DEVICE_SERIAL_PORT                      EQU (5<<1)      ; must be last entry, or remove optimization in DetectPrint
92
93
94; Master/Slave drive specific parameters
95struc DRVPARAMS
96    .wFlags         resb    2   ; Drive flags
97    .dwMaximumLBA:              ; User specified maximum number of sectors
98    .wCylinders     resb    2   ; User specified cylinders (1...16383)
99    .wHeadsAndSectors:
100    .bHeads         resb    1   ; User specified Heads (1...16)
101    .bSect          resb    1   ; User specified Sectors per track (1...63)
102endstruc
103
104; Bit defines for DRVPARAMS.wFlags
105FLG_DRVPARAMS_USERCHS   EQU (1<<0)  ; User specified P-CHS values
106FLG_DRVPARAMS_BLOCKMODE EQU (1<<1)  ; Enable Block mode transfers
107FLG_DRVPARAMS_USERLBA   EQU (1<<2)  ; User specified LBA values
108
109;
110; COM Number to I/O Port Address Mapping
111;
112; COM Number:                               1,    2,    3,    4,    5,    6,    7,    8,    9,   10,   11,   12     
113; Corresponds to I/O port:                3f8,  2f8,  3e8,  2e8,  2f0,  3e0,  2e0,  260,  368,  268,  360,  270
114; Corresponds to Packed I/O port (hex):    37,   17,   35,   15,   16,   34,   14,    4,   25,    5,   24,    6
115;
116DEVICE_SERIAL_COM1  EQU     3f8h
117DEVICE_SERIAL_COM2  EQU     2f8h
118DEVICE_SERIAL_COM3  EQU     3e8h
119DEVICE_SERIAL_COM4  EQU     2e8h
120DEVICE_SERIAL_COM5  EQU     2f0h
121DEVICE_SERIAL_COM6  EQU     3e0h
122DEVICE_SERIAL_COM7  EQU     2e0h
123DEVICE_SERIAL_COM8  EQU     260h
124DEVICE_SERIAL_COM9  EQU     368h
125DEVICE_SERIAL_COMA  EQU     268h
126DEVICE_SERIAL_COMB  EQU     360h
127DEVICE_SERIAL_COMC  EQU     270h
128
129
130%endif ; ROMVARS_INC
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