| 1 | ; Project name : XTIDE Universal BIOS Configurator v2
|
|---|
| 2 | ; Description : Functions to detect ports and devices.
|
|---|
| 3 |
|
|---|
| 4 | ;
|
|---|
| 5 | ; XTIDE Universal BIOS and Associated Tools
|
|---|
| 6 | ; Copyright (C) 2009-2010 by Tomi Tilli, 2011-2013 by XTIDE Universal BIOS Team.
|
|---|
| 7 | ;
|
|---|
| 8 | ; This program is free software; you can redistribute it and/or modify
|
|---|
| 9 | ; it under the terms of the GNU General Public License as published by
|
|---|
| 10 | ; the Free Software Foundation; either version 2 of the License, or
|
|---|
| 11 | ; (at your option) any later version.
|
|---|
| 12 | ;
|
|---|
| 13 | ; This program is distributed in the hope that it will be useful,
|
|---|
| 14 | ; but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|---|
| 15 | ; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|---|
| 16 | ; GNU General Public License for more details.
|
|---|
| 17 | ; Visit http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
|
|---|
| 18 | ;
|
|---|
| 19 |
|
|---|
| 20 | ; Section containing code
|
|---|
| 21 | SECTION .text
|
|---|
| 22 |
|
|---|
| 23 | IDE_PORT_TO_START_DETECTION EQU 00h ; Must be zero (not actual port)
|
|---|
| 24 | FIRST_MEMORY_SEGMENT_ADDRESS EQU 0C000h
|
|---|
| 25 |
|
|---|
| 26 | ;--------------------------------------------------------------------
|
|---|
| 27 | ; IdeAutodetect_DetectIdeDeviceFromPortDXAndReturnControlBlockInSI
|
|---|
| 28 | ; Parameters:
|
|---|
| 29 | ; DX: IDE Base Port or segment address (Command Block)
|
|---|
| 30 | ; DS:DI: Ptr to ROMVARS
|
|---|
| 31 | ; Returns:
|
|---|
| 32 | ; AL: Device Type
|
|---|
| 33 | ; SI: IDE Control Block Base port (port mapped devices only)
|
|---|
| 34 | ; CF: Clear if IDE Device found
|
|---|
| 35 | ; Set if IDE Device not found
|
|---|
| 36 | ; Corrupts registers:
|
|---|
| 37 | ; AH, BX
|
|---|
| 38 | ;--------------------------------------------------------------------
|
|---|
| 39 | IdeAutodetect_DetectIdeDeviceFromPortDXAndReturnControlBlockInSI:
|
|---|
| 40 | cmp dh, FIRST_MEMORY_SEGMENT_ADDRESS >> 8
|
|---|
| 41 | jb SHORT DetectPortMappedDeviceFromPortDX
|
|---|
| 42 | ; Fall to DetectMemoryMappedDeviceFromSegmentDX
|
|---|
| 43 |
|
|---|
| 44 | ;--------------------------------------------------------------------
|
|---|
| 45 | ; DetectMemoryMappedDeviceFromSegmentDX
|
|---|
| 46 | ; Parameters:
|
|---|
| 47 | ; DX: Segment address for Memory Mapped Device
|
|---|
| 48 | ; DS:DI: Ptr to ROMVARS
|
|---|
| 49 | ; Returns:
|
|---|
| 50 | ; AL: Device Type
|
|---|
| 51 | ; CF: Clear if IDE Device found
|
|---|
| 52 | ; Set if IDE Device not found
|
|---|
| 53 | ; Corrupts registers:
|
|---|
| 54 | ; AH, BX
|
|---|
| 55 | ;--------------------------------------------------------------------
|
|---|
| 56 | DetectMemoryMappedDeviceFromSegmentDX:
|
|---|
| 57 | ; *** Try to detect JR-IDE/ISA and ADP50L (only if MODULE_8BIT_IDE_ADVANCED is present) ***
|
|---|
| 58 | test BYTE [di+ROMVARS.wFlags], FLG_ROMVARS_MODULE_8BIT_IDE_ADVANCED
|
|---|
| 59 | stc
|
|---|
| 60 | jz SHORT .NoIdeDeviceFound
|
|---|
| 61 |
|
|---|
| 62 | push ds
|
|---|
| 63 | mov ds, dx
|
|---|
| 64 |
|
|---|
| 65 | cli
|
|---|
| 66 | mov ah, [JRIDE_COMMAND_BLOCK_REGISTER_WINDOW_OFFSET + STATUS_REGISTER_in]
|
|---|
| 67 | mov al, [JRIDE_CONTROL_BLOCK_REGISTER_WINDOW_OFFSET + ALTERNATE_STATUS_REGISTER_in]
|
|---|
| 68 | sti
|
|---|
| 69 | call CompareIdeStatusRegistersFromALandAH
|
|---|
| 70 | mov al, DEVICE_8BIT_JRIDE_ISA
|
|---|
| 71 | jnc .IdeDeviceFound
|
|---|
| 72 |
|
|---|
| 73 | cli
|
|---|
| 74 | mov ah, [ADP50L_COMMAND_BLOCK_REGISTER_WINDOW_OFFSET + (STATUS_REGISTER_in << 1)]
|
|---|
| 75 | mov al, [ADP50L_CONTROL_BLOCK_REGISTER_WINDOW_OFFSET + (ALTERNATE_STATUS_REGISTER_in << 1)]
|
|---|
| 76 | sti
|
|---|
| 77 | call CompareIdeStatusRegistersFromALandAH
|
|---|
| 78 | mov al, DEVICE_8BIT_ADP50L
|
|---|
| 79 |
|
|---|
| 80 | .IdeDeviceFound:
|
|---|
| 81 | mov si, dx ; For IDEDTCT.COM
|
|---|
| 82 | pop ds
|
|---|
| 83 | .NoIdeDeviceFound:
|
|---|
| 84 | ret
|
|---|
| 85 |
|
|---|
| 86 |
|
|---|
| 87 | ;--------------------------------------------------------------------
|
|---|
| 88 | ; DetectPortMappedDeviceFromPortDX
|
|---|
| 89 | ; Parameters:
|
|---|
| 90 | ; DX: IDE Base Port (Command Block)
|
|---|
| 91 | ; DS:DI: Ptr to ROMVARS
|
|---|
| 92 | ; Returns:
|
|---|
| 93 | ; AL: Device Type
|
|---|
| 94 | ; SI: IDE Control Block Base port
|
|---|
| 95 | ; CF: Clear if IDE Device found
|
|---|
| 96 | ; Set if IDE Device not found
|
|---|
| 97 | ; Corrupts registers:
|
|---|
| 98 | ; AH, BX
|
|---|
| 99 | ;--------------------------------------------------------------------
|
|---|
| 100 | DetectPortMappedDeviceFromPortDX:
|
|---|
| 101 | mov si, dx
|
|---|
| 102 | mov bx, STATUS_REGISTER_in | (ALTERNATE_STATUS_REGISTER_in << 8)
|
|---|
| 103 | ; *** Try to detect AC-1075 / AC-1070 controllers ***
|
|---|
| 104 | cmp dh, 25h
|
|---|
| 105 | jne SHORT .NotArcoComputerProducts
|
|---|
| 106 | add si, BYTE 8 ; Add control block offset
|
|---|
| 107 | call DetectIdeDeviceFromPortsDXandSIwithOffsetsInBLandBH
|
|---|
| 108 | mov al, DEVICE_16BIT_ATA
|
|---|
| 109 | ret
|
|---|
| 110 | .NotArcoComputerProducts:
|
|---|
| 111 | ; *** Try to detect Standard 16- and 32-bit IDE Devices ***
|
|---|
| 112 | mov al, DEVICE_16BIT_ATA ; Assume 16-bit ISA slot for AT builds
|
|---|
| 113 | call Buffers_IsXTbuildLoaded
|
|---|
| 114 | eCMOVE al, DEVICE_8BIT_ATA ; Assume 8-bit ISA slot for XT builds
|
|---|
| 115 |
|
|---|
| 116 | ; Start with standard Control Block base port used by Primary and Secondary IDE
|
|---|
| 117 | add si, STANDARD_CONTROL_BLOCK_OFFSET
|
|---|
| 118 | .RedetectTertiaryOrQuaternaryWithDifferentControlBlockAddress:
|
|---|
| 119 | push ax ; Store device type
|
|---|
| 120 | call DetectIdeDeviceFromPortsDXandSIwithOffsetsInBLandBH
|
|---|
| 121 | pop ax ; Restore device type
|
|---|
| 122 | jnc SHORT .IdeDeviceFound
|
|---|
| 123 |
|
|---|
| 124 | ; 16- or 32-bit IDE Device was not found but we may have used wrong Control Block port if we were trying
|
|---|
| 125 | ; to detect Tertiary or Quaternary IDE controllers. Control Block port location is not standardized. For
|
|---|
| 126 | ; example Promise FloppyMAX has Control Block at STANDARD_CONTROL_BLOCK_OFFSET but Sound Blaster 16 (CT2290)
|
|---|
| 127 | ; use DEVICE_ATA_SECONDARY_PORTCTRL for Tertiary and Quaternary even though only Secondary should use that.
|
|---|
| 128 | call ChangeControlBlockAddressInSI
|
|---|
| 129 | jz SHORT .RedetectTertiaryOrQuaternaryWithDifferentControlBlockAddress
|
|---|
| 130 |
|
|---|
| 131 | ; Detect 8-bit devices only if MODULE_8BIT_IDE is available
|
|---|
| 132 | test BYTE [di+ROMVARS.wFlags], FLG_ROMVARS_MODULE_8BIT_IDE | FLG_ROMVARS_MODULE_8BIT_IDE_ADVANCED
|
|---|
| 133 | jz SHORT NoIdeDeviceFound
|
|---|
| 134 | jpo SHORT .SkipXTCF ; Only 1 bit set means no MODULE_8BIT_IDE_ADVANCED
|
|---|
| 135 |
|
|---|
| 136 | ; *** Try to detect XT-CF ***
|
|---|
| 137 | mov si, dx
|
|---|
| 138 | add si, BYTE XTCF_CONTROL_BLOCK_OFFSET
|
|---|
| 139 | eSHL_IM bx, 1 ; SHL 1 register offsets for XT-CF
|
|---|
| 140 | call DetectIdeDeviceFromPortsDXandSIwithOffsetsInBLandBH
|
|---|
| 141 | jc SHORT .ContinueDetection
|
|---|
| 142 | mov al, DEVICE_8BIT_XTCF_PIO8_WITH_BIU_OFFLOAD
|
|---|
| 143 | cmp BYTE [cs:IsOlivettiM24], 1
|
|---|
| 144 | jne SHORT .IdeDeviceFound
|
|---|
| 145 | mov al, DEVICE_8BIT_XTCF_PIO8
|
|---|
| 146 | jmp SHORT .IdeDeviceFound
|
|---|
| 147 | .ContinueDetection:
|
|---|
| 148 | shr bx, 1
|
|---|
| 149 | .SkipXTCF:
|
|---|
| 150 |
|
|---|
| 151 | ; *** Try to detect 8-bit XT-IDE rev 1 or rev 2 ***
|
|---|
| 152 | ; Note that A0<->A3 address swaps Status Register and Alternative
|
|---|
| 153 | ; Status Register addresses. That is why we need another step
|
|---|
| 154 | ; to check is this XT-IDE rev 1 or rev 2.
|
|---|
| 155 | mov si, dx
|
|---|
| 156 | add si, BYTE XTIDE_CONTROL_BLOCK_OFFSET
|
|---|
| 157 | call DetectIdeDeviceFromPortsDXandSIwithOffsetsInBLandBH
|
|---|
| 158 | jc SHORT NoIdeDeviceFound ; No XT-IDE rev 1 or rev 2 found
|
|---|
| 159 |
|
|---|
| 160 | ; Now we can be sure that we have XT-IDE rev 1 or rev 2.
|
|---|
| 161 | ; Rev 2 swaps address lines A0 and A3 thus LBA Low Register
|
|---|
| 162 | ; moves from offset 3h to offset Ah. There is no Register at
|
|---|
| 163 | ; offset Ah so if we can write to it and read back, then we
|
|---|
| 164 | ; must have XT-IDE rev 2 or modded rev 1.
|
|---|
| 165 | push dx
|
|---|
| 166 | add dx, BYTE 0Ah ; LBA Low Register for XT-IDE rev 2
|
|---|
| 167 | mov al, DEVICE_8BIT_XTIDE_REV2 ; Our test byte
|
|---|
| 168 | out dx, al ; Output our test byte
|
|---|
| 169 | JMP_DELAY
|
|---|
| 170 | in al, dx ; Read back
|
|---|
| 171 | pop dx
|
|---|
| 172 | cmp al, DEVICE_8BIT_XTIDE_REV2
|
|---|
| 173 | jne SHORT .XtideRev1
|
|---|
| 174 | cmp BYTE [cs:IsOlivettiM24], 1
|
|---|
| 175 | jne SHORT .IdeDeviceFound
|
|---|
| 176 | mov al, DEVICE_8BIT_XTIDE_REV2_OLIVETTI
|
|---|
| 177 | ret ; With CF cleared
|
|---|
| 178 | .XtideRev1:
|
|---|
| 179 | mov al, DEVICE_8BIT_XTIDE_REV1 ; We must have rev 1
|
|---|
| 180 | .IdeDeviceFound:
|
|---|
| 181 | clc
|
|---|
| 182 | ret
|
|---|
| 183 |
|
|---|
| 184 |
|
|---|
| 185 | ;--------------------------------------------------------------------
|
|---|
| 186 | ; DetectIdeDeviceFromPortsDXandSIwithOffsetsInBLandBH
|
|---|
| 187 | ; Parameters:
|
|---|
| 188 | ; BL: Offset to IDE Status Register
|
|---|
| 189 | ; BH: Offset to Alternative Status Register
|
|---|
| 190 | ; DX: IDE Base Port address
|
|---|
| 191 | ; SI: IDE Control Block address
|
|---|
| 192 | ; Returns:
|
|---|
| 193 | ; CF: Clear if IDE Device found
|
|---|
| 194 | ; Set if IDE Device not found
|
|---|
| 195 | ; Corrupts registers:
|
|---|
| 196 | ; AX
|
|---|
| 197 | ;--------------------------------------------------------------------
|
|---|
| 198 | DetectIdeDeviceFromPortsDXandSIwithOffsetsInBLandBH:
|
|---|
| 199 | ; Read Status and Alternative Status Registers
|
|---|
| 200 | push dx
|
|---|
| 201 |
|
|---|
| 202 | add dl, bl
|
|---|
| 203 | cli ; Disable Interrupts
|
|---|
| 204 | in al, dx ; Read Status Register...
|
|---|
| 205 | mov ah, al ; ...to AH
|
|---|
| 206 | mov dx, si
|
|---|
| 207 | add dl, bh
|
|---|
| 208 | in al, dx ; Read Alternative Status Register to AL
|
|---|
| 209 | sti ; Enable Interrupts
|
|---|
| 210 |
|
|---|
| 211 | pop dx
|
|---|
| 212 | ; Fall to CompareIdeStatusRegistersFromALandAH
|
|---|
| 213 |
|
|---|
| 214 |
|
|---|
| 215 | ;--------------------------------------------------------------------
|
|---|
| 216 | ; CompareIdeStatusRegistersFromALandAH
|
|---|
| 217 | ; Parameters:
|
|---|
| 218 | ; AH: Possible IDE Status Register contents
|
|---|
| 219 | ; AL: Possible IDE Alternative Status Register contents
|
|---|
| 220 | ; Returns:
|
|---|
| 221 | ; CF: Clear if valid Status Register Contents
|
|---|
| 222 | ; Set if not possible IDE Status Registers
|
|---|
| 223 | ; Corrupts registers:
|
|---|
| 224 | ; Nothing
|
|---|
| 225 | ;--------------------------------------------------------------------
|
|---|
| 226 | CompareIdeStatusRegistersFromALandAH:
|
|---|
| 227 | ; Status Register now in AH and Alternative Status Register in AL.
|
|---|
| 228 | ; They must be the same if base port was in use by IDE device.
|
|---|
| 229 | cmp al, ah
|
|---|
| 230 | jne SHORT NoIdeDeviceFound
|
|---|
| 231 |
|
|---|
| 232 | ; Bytes were the same but it is possible they were both FFh, for
|
|---|
| 233 | ; example. We must make sure bits are what is expected from valid
|
|---|
| 234 | ; IDE Status Register. So far all drives I've tested return 50h
|
|---|
| 235 | ; (FLG_STATUS_DRDY and FLG_STATUS_DSC set) or 00h.
|
|---|
| 236 | ; I suspect that the zero might mean non available drive is selected. For example if Master
|
|---|
| 237 | ; drive is present but Slave is selected from IDE Drive and Head Select Register,
|
|---|
| 238 | ; then the Status Register can be 00h. We cannot accept 00h as valid byte
|
|---|
| 239 | ; since that can easily cause invalid JR-IDE/ISA detections.
|
|---|
| 240 | test al, FLG_STATUS_BSY | FLG_STATUS_DF | FLG_STATUS_DRQ | FLG_STATUS_ERR
|
|---|
| 241 | jnz SHORT NoIdeDeviceFound ; Busy or Errors cannot be set
|
|---|
| 242 | test al, FLG_STATUS_DRDY
|
|---|
| 243 | jz SHORT NoIdeDeviceFound ; Device needs to be ready
|
|---|
| 244 | ret ; Return with CF cleared
|
|---|
| 245 |
|
|---|
| 246 | NoIdeDeviceFound:
|
|---|
| 247 | stc
|
|---|
| 248 | ret
|
|---|
| 249 |
|
|---|
| 250 |
|
|---|
| 251 | ;--------------------------------------------------------------------
|
|---|
| 252 | ; ChangeControlBlockAddressInSI
|
|---|
| 253 | ; Parameters:
|
|---|
| 254 | ; DX: IDE Base Port address
|
|---|
| 255 | ; SI: IDE Control Block address
|
|---|
| 256 | ; Returns:
|
|---|
| 257 | ; ZF: Set if SI changed
|
|---|
| 258 | ; Cleared if different control block address is not possible
|
|---|
| 259 | ; Corrupts registers:
|
|---|
| 260 | ; Nothing
|
|---|
| 261 | ;--------------------------------------------------------------------
|
|---|
| 262 | ChangeControlBlockAddressInSI:
|
|---|
| 263 | cmp si, 368h
|
|---|
| 264 | je SHORT .TrySecondAlternative
|
|---|
| 265 | cmp si, 3E8h
|
|---|
| 266 | je SHORT .TrySecondAlternative
|
|---|
| 267 |
|
|---|
| 268 | cmp si, 360h
|
|---|
| 269 | je SHORT .TryLastAlternative
|
|---|
| 270 | cmp si, 3E0h
|
|---|
| 271 | jne SHORT .Return ; With ZF cleared
|
|---|
| 272 |
|
|---|
| 273 | .TryLastAlternative:
|
|---|
| 274 | mov si, DEVICE_ATA_SECONDARY_PORTCTRL + 8 ; Changes to 370h used by Sound Blaster 16 (CT2290)
|
|---|
| 275 | ; Fall to .TrySecondAlternative
|
|---|
| 276 | .TrySecondAlternative:
|
|---|
| 277 | lea si, [si-8] ; 368h to 360h, 3E8h to 3E0h
|
|---|
| 278 | .Return:
|
|---|
| 279 | ret
|
|---|
| 280 |
|
|---|
| 281 |
|
|---|
| 282 | ;--------------------------------------------------------------------
|
|---|
| 283 | ; IdeAutodetect_IncrementDXtoNextIdeBasePort
|
|---|
| 284 | ; Parameters:
|
|---|
| 285 | ; DX: Previous IDE Base Port or IDE_PORT_TO_START_DETECTION
|
|---|
| 286 | ; Returns:
|
|---|
| 287 | ; DX: Next IDE Base Port
|
|---|
| 288 | ; ZF: Set if no more Base Ports (DX was last base port on entry)
|
|---|
| 289 | ; Clear if new base port returned in DX
|
|---|
| 290 | ; Corrupts registers:
|
|---|
| 291 | ; AX
|
|---|
| 292 | ;--------------------------------------------------------------------
|
|---|
| 293 | ALIGN JUMP_ALIGN
|
|---|
| 294 | IdeAutodetect_IncrementDXtoNextIdeBasePort:
|
|---|
| 295 | cmp dx, [cs:.wLastIdePort]
|
|---|
| 296 | je SHORT .AllPortsAlreadyDetected
|
|---|
| 297 |
|
|---|
| 298 | push si
|
|---|
| 299 | mov si, .rgwIdeBasePorts
|
|---|
| 300 | .CompareNextIdeBasePort:
|
|---|
| 301 | cmp [cs:si], dx
|
|---|
| 302 | lea si, [si+2] ; Increment SI and preserve FLAGS
|
|---|
| 303 | jne SHORT .CompareNextIdeBasePort
|
|---|
| 304 |
|
|---|
| 305 | mov dx, [cs:si] ; Get next port
|
|---|
| 306 | test dx, dx ; Clear ZF
|
|---|
| 307 | pop si
|
|---|
| 308 | .AllPortsAlreadyDetected:
|
|---|
| 309 | ret
|
|---|
| 310 |
|
|---|
| 311 |
|
|---|
| 312 | ; All ports used in autodetection. Ports can be in any order.
|
|---|
| 313 | ALIGN WORD_ALIGN
|
|---|
| 314 | .rgwIdeBasePorts:
|
|---|
| 315 | dw IDE_PORT_TO_START_DETECTION ; Must be first
|
|---|
| 316 | ; Standard IDE
|
|---|
| 317 | dw DEVICE_ATA_PRIMARY_PORT
|
|---|
| 318 | dw DEVICE_ATA_SECONDARY_PORT
|
|---|
| 319 | dw DEVICE_ATA_TERTIARY_PORT
|
|---|
| 320 | dw DEVICE_ATA_QUATERNARY_PORT
|
|---|
| 321 | ; 8-bit Devices
|
|---|
| 322 | dw 200h
|
|---|
| 323 | dw 220h
|
|---|
| 324 | dw 240h
|
|---|
| 325 | dw 260h
|
|---|
| 326 | dw 280h
|
|---|
| 327 | dw 2A0h
|
|---|
| 328 | dw 2C0h
|
|---|
| 329 | dw 2E0h
|
|---|
| 330 | dw 300h
|
|---|
| 331 | dw 320h
|
|---|
| 332 | dw 340h
|
|---|
| 333 | dw 360h
|
|---|
| 334 | dw 380h
|
|---|
| 335 | dw 3A0h
|
|---|
| 336 | dw 3C0h
|
|---|
| 337 | dw 3E0h
|
|---|
| 338 | ; Arco Computer Products AC-1075 / AC-1070 (16-bit MCA IDE adapters with Control Block at +8 and no IRQ)
|
|---|
| 339 | dw 2510h
|
|---|
| 340 | dw 2520h
|
|---|
| 341 | ; Memory Segment Addresses
|
|---|
| 342 | dw 0C000h ; JR-IDE/ISA
|
|---|
| 343 | dw 0C400h ; JR-IDE/ISA
|
|---|
| 344 | dw 0C800h ; JR-IDE/ISA and ADP50L
|
|---|
| 345 | dw 0CA00h ; ADP50L
|
|---|
| 346 | dw 0CC00h ; JR-IDE/ISA and ADP50L
|
|---|
| 347 | dw 0CE00h ; ADP50L
|
|---|
| 348 | dw 0D000h ; JR-IDE/ISA
|
|---|
| 349 | dw 0D400h ; JR-IDE/ISA
|
|---|
| 350 | dw 0D800h ; JR-IDE/ISA
|
|---|
| 351 | .wLastIdePort:
|
|---|
| 352 | dw 0DC00h ; JR-IDE/ISA
|
|---|
