| 1 | ;;
|
|---|
| 2 | ;; Copyright (C) 2006-2011 Oracle Corporation
|
|---|
| 3 | ;;
|
|---|
| 4 | ;; This file is part of VirtualBox Open Source Edition (OSE), as
|
|---|
| 5 | ;; available from http://www.virtualbox.org. This file is free software;
|
|---|
| 6 | ;; you can redistribute it and/or modify it under the terms of the GNU
|
|---|
| 7 | ;; General Public License (GPL) as published by the Free Software
|
|---|
| 8 | ;; Foundation, in version 2 as it comes in the "COPYING" file of the
|
|---|
| 9 | ;; VirtualBox OSE distribution. VirtualBox OSE is distributed in the
|
|---|
| 10 | ;; hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
|
|---|
| 11 | ;; --------------------------------------------------------------------
|
|---|
| 12 | ;;
|
|---|
| 13 | ;; This code is based on:
|
|---|
| 14 | ;;
|
|---|
| 15 | ;; ROM BIOS for use with Bochs/Plex86/QEMU emulation environment
|
|---|
| 16 | ;;
|
|---|
| 17 | ;; Copyright (C) 2002 MandrakeSoft S.A.
|
|---|
| 18 | ;;
|
|---|
| 19 | ;; MandrakeSoft S.A.
|
|---|
| 20 | ;; 43, rue d'Aboukir
|
|---|
| 21 | ;; 75002 Paris - France
|
|---|
| 22 | ;; http://www.linux-mandrake.com/
|
|---|
| 23 | ;; http://www.mandrakesoft.com/
|
|---|
| 24 | ;;
|
|---|
| 25 | ;; This library is free software; you can redistribute it and/or
|
|---|
| 26 | ;; modify it under the terms of the GNU Lesser General Public
|
|---|
| 27 | ;; License as published by the Free Software Foundation; either
|
|---|
| 28 | ;; version 2 of the License, or (at your option) any later version.
|
|---|
| 29 | ;;
|
|---|
| 30 | ;; This library is distributed in the hope that it will be useful,
|
|---|
| 31 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|---|
| 32 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|---|
| 33 | ;; Lesser General Public License for more details.
|
|---|
| 34 | ;;
|
|---|
| 35 | ;; You should have received a copy of the GNU Lesser General Public
|
|---|
| 36 | ;; License along with this library; if not, write to the Free Software
|
|---|
| 37 | ;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|---|
| 38 | ;;
|
|---|
| 39 | ;;
|
|---|
| 40 |
|
|---|
| 41 | include pcicfg.inc
|
|---|
| 42 |
|
|---|
| 43 | if BX_PCIBIOS
|
|---|
| 44 |
|
|---|
| 45 | .386
|
|---|
| 46 |
|
|---|
| 47 | BIOS32 segment public 'CODE' use32
|
|---|
| 48 |
|
|---|
| 49 | public pcibios_protected
|
|---|
| 50 |
|
|---|
| 51 | align 16
|
|---|
| 52 | bios32_structure:
|
|---|
| 53 | db '_32_' ; signature
|
|---|
| 54 | dw bios32_entry_point, 0Fh ;; 32 bit physical address
|
|---|
| 55 | db 0 ; revision level
|
|---|
| 56 | db 1 ; length in paragraphs
|
|---|
| 57 | db 0 ; checksum (updated externally)
|
|---|
| 58 | db 0,0,0,0,0 ; reserved
|
|---|
| 59 |
|
|---|
| 60 | align 16
|
|---|
| 61 | bios32_entry_point:
|
|---|
| 62 | pushfd
|
|---|
| 63 | cmp eax, 'ICP$' ; 0x49435024 "$PCI"
|
|---|
| 64 | jne unknown_service
|
|---|
| 65 |
|
|---|
| 66 | ifdef PCI_FIXED_HOST_BRIDGE_1
|
|---|
| 67 | mov eax, 80000000h
|
|---|
| 68 | mov dx, PCI_CFG1
|
|---|
| 69 | out dx, eax
|
|---|
| 70 | mov dx, PCI_CFG2
|
|---|
| 71 | in eax, dx
|
|---|
| 72 | cmp eax, PCI_FIXED_HOST_BRIDGE_1
|
|---|
| 73 | je device_ok
|
|---|
| 74 | endif
|
|---|
| 75 |
|
|---|
| 76 | ifdef PCI_FIXED_HOST_BRIDGE_2
|
|---|
| 77 | ; 18h << 11
|
|---|
| 78 | mov eax, 8000c000h
|
|---|
| 79 | mov dx, PCI_CFG1
|
|---|
| 80 | out dx, eax
|
|---|
| 81 | mov dx, PCI_CFG2
|
|---|
| 82 | in eax, dx
|
|---|
| 83 | cmp eax, PCI_FIXED_HOST_BRIDGE_2
|
|---|
| 84 | je device_ok
|
|---|
| 85 | ; 19h << 11
|
|---|
| 86 | mov eax, 8000c800h
|
|---|
| 87 | mov dx, PCI_CFG1
|
|---|
| 88 | out dx, eax
|
|---|
| 89 | mov dx, PCI_CFG2
|
|---|
| 90 | in eax, dx
|
|---|
| 91 | cmp eax, PCI_FIXED_HOST_BRIDGE_2
|
|---|
| 92 | je device_ok
|
|---|
| 93 | endif
|
|---|
| 94 | jmp unknown_service
|
|---|
| 95 | device_ok:
|
|---|
| 96 | mov ebx, 000f0000h
|
|---|
| 97 | mov ecx, 0
|
|---|
| 98 | mov edx, pcibios_protected
|
|---|
| 99 | xor al, al
|
|---|
| 100 | jmp bios32_end
|
|---|
| 101 |
|
|---|
| 102 | unknown_service:
|
|---|
| 103 | mov al, 80h
|
|---|
| 104 | bios32_end:
|
|---|
| 105 | popfd
|
|---|
| 106 | retf
|
|---|
| 107 |
|
|---|
| 108 | align 16
|
|---|
| 109 | pcibios_protected:
|
|---|
| 110 | if 1
|
|---|
| 111 | ;; The old implementation of pcibios_protected will eventually go,
|
|---|
| 112 | ;; replaced by C code.
|
|---|
| 113 | else
|
|---|
| 114 |
|
|---|
| 115 | extrn _pci32_function:near
|
|---|
| 116 |
|
|---|
| 117 | pushfd
|
|---|
| 118 | push es
|
|---|
| 119 | pushad
|
|---|
| 120 | call _pci32_function
|
|---|
| 121 | popad
|
|---|
| 122 | pop es
|
|---|
| 123 | popfd
|
|---|
| 124 | retf
|
|---|
| 125 | endif
|
|---|
| 126 | pushfd
|
|---|
| 127 | cli
|
|---|
| 128 | push esi
|
|---|
| 129 | push edi
|
|---|
| 130 | cmp al, 1 ; installation check
|
|---|
| 131 | jne pci_pro_f02
|
|---|
| 132 |
|
|---|
| 133 | mov bx, 0210h
|
|---|
| 134 | mov cx, 0
|
|---|
| 135 | mov edx, ' ICP' ; 0x20494350 "PCI "
|
|---|
| 136 | mov al, 1
|
|---|
| 137 | jmp pci_pro_ok
|
|---|
| 138 |
|
|---|
| 139 | pci_pro_f02: ;; find pci device
|
|---|
| 140 | cmp al, 2
|
|---|
| 141 | jne pci_pro_f03
|
|---|
| 142 |
|
|---|
| 143 | shl ecx, 16
|
|---|
| 144 | mov cx, dx
|
|---|
| 145 | xor ebx, ebx
|
|---|
| 146 | mov di, 0
|
|---|
| 147 | pci_pro_devloop:
|
|---|
| 148 | call pci_pro_select_reg
|
|---|
| 149 | mov dx, PCI_CFG2
|
|---|
| 150 | in eax, dx
|
|---|
| 151 | cmp eax, ecx
|
|---|
| 152 | jne pci_pro_nextdev
|
|---|
| 153 |
|
|---|
| 154 | cmp si, 0
|
|---|
| 155 | je pci_pro_ok
|
|---|
| 156 |
|
|---|
| 157 | dec si
|
|---|
| 158 | pci_pro_nextdev:
|
|---|
| 159 | inc ebx
|
|---|
| 160 | cmp ebx, MAX_BUSDEVFN
|
|---|
| 161 | jne pci_pro_devloop
|
|---|
| 162 |
|
|---|
| 163 | mov ah, 86h
|
|---|
| 164 | jmp pci_pro_fail
|
|---|
| 165 |
|
|---|
| 166 | pci_pro_f03: ;; find class code
|
|---|
| 167 | cmp al, 3
|
|---|
| 168 | jne pci_pro_f08
|
|---|
| 169 |
|
|---|
| 170 | xor ebx, ebx
|
|---|
| 171 | mov di, 8
|
|---|
| 172 | pci_pro_devloop2:
|
|---|
| 173 | call pci_pro_select_reg
|
|---|
| 174 | mov dx, PCI_CFG2
|
|---|
| 175 | in eax, dx
|
|---|
| 176 | shr eax, 8
|
|---|
| 177 | cmp eax, ecx
|
|---|
| 178 | jne pci_pro_nextdev2
|
|---|
| 179 |
|
|---|
| 180 | cmp si, 0
|
|---|
| 181 | je pci_pro_ok
|
|---|
| 182 |
|
|---|
| 183 | dec si
|
|---|
| 184 | pci_pro_nextdev2:
|
|---|
| 185 | inc ebx
|
|---|
| 186 | cmp ebx, MAX_BUSDEVFN
|
|---|
| 187 | jne pci_pro_devloop2
|
|---|
| 188 |
|
|---|
| 189 | mov ah, 86h
|
|---|
| 190 | jmp pci_pro_fail
|
|---|
| 191 |
|
|---|
| 192 | pci_pro_f08: ;; read configuration byte
|
|---|
| 193 | cmp al, 8
|
|---|
| 194 | jne pci_pro_f09
|
|---|
| 195 |
|
|---|
| 196 | call pci_pro_select_reg
|
|---|
| 197 | push edx
|
|---|
| 198 | mov dx, di
|
|---|
| 199 | and dx, 3
|
|---|
| 200 | add dx, PCI_CFG2
|
|---|
| 201 | in al, dx
|
|---|
| 202 | pop edx
|
|---|
| 203 | mov cl, al
|
|---|
| 204 | jmp pci_pro_ok
|
|---|
| 205 |
|
|---|
| 206 | pci_pro_f09: ;; read configuration word
|
|---|
| 207 | cmp al, 9
|
|---|
| 208 | jne pci_pro_f0a
|
|---|
| 209 |
|
|---|
| 210 | call pci_pro_select_reg
|
|---|
| 211 | push edx
|
|---|
| 212 | mov dx, di
|
|---|
| 213 | and dx, 2
|
|---|
| 214 | add dx, PCI_CFG2
|
|---|
| 215 | in ax, dx
|
|---|
| 216 | pop edx
|
|---|
| 217 | mov cx, ax
|
|---|
| 218 | jmp pci_pro_ok
|
|---|
| 219 |
|
|---|
| 220 | pci_pro_f0a: ;; read configuration dword
|
|---|
| 221 | cmp al, 0Ah
|
|---|
| 222 | jne pci_pro_f0b
|
|---|
| 223 |
|
|---|
| 224 | call pci_pro_select_reg
|
|---|
| 225 | push edx
|
|---|
| 226 | mov dx, PCI_CFG2
|
|---|
| 227 | in eax, dx
|
|---|
| 228 | pop edx
|
|---|
| 229 | mov ecx, eax
|
|---|
| 230 | jmp pci_pro_ok
|
|---|
| 231 |
|
|---|
| 232 | pci_pro_f0b: ;; write configuration byte
|
|---|
| 233 | cmp al, 0Bh
|
|---|
| 234 | jne pci_pro_f0c
|
|---|
| 235 |
|
|---|
| 236 | call pci_pro_select_reg
|
|---|
| 237 | push edx
|
|---|
| 238 | mov dx, di
|
|---|
| 239 | and dx, 3
|
|---|
| 240 | add dx, PCI_CFG2
|
|---|
| 241 | mov al, cl
|
|---|
| 242 | out dx, al
|
|---|
| 243 | pop edx
|
|---|
| 244 | jmp pci_pro_ok
|
|---|
| 245 |
|
|---|
| 246 | pci_pro_f0c: ;; write configuration word
|
|---|
| 247 | cmp al, 0Ch
|
|---|
| 248 | jne pci_pro_f0d
|
|---|
| 249 |
|
|---|
| 250 | call pci_pro_select_reg
|
|---|
| 251 | push edx
|
|---|
| 252 | mov dx, di
|
|---|
| 253 | and dx, 2
|
|---|
| 254 | add dx, PCI_CFG2
|
|---|
| 255 | mov ax, cx
|
|---|
| 256 | out dx, ax
|
|---|
| 257 | pop edx
|
|---|
| 258 | jmp pci_pro_ok
|
|---|
| 259 |
|
|---|
| 260 | pci_pro_f0d: ;; write configuration dword
|
|---|
| 261 | cmp al, 0Dh
|
|---|
| 262 | jne pci_pro_unknown
|
|---|
| 263 | call pci_pro_select_reg
|
|---|
| 264 | push edx
|
|---|
| 265 | mov dx, PCI_CFG2
|
|---|
| 266 | mov eax, ecx
|
|---|
| 267 | out dx, eax
|
|---|
| 268 | pop edx
|
|---|
| 269 | jmp pci_pro_ok
|
|---|
| 270 |
|
|---|
| 271 | pci_pro_unknown:
|
|---|
| 272 | mov ah, 81h
|
|---|
| 273 | pci_pro_fail:
|
|---|
| 274 | pop edi
|
|---|
| 275 | pop esi
|
|---|
| 276 | popfd
|
|---|
| 277 | stc
|
|---|
| 278 | retf
|
|---|
| 279 |
|
|---|
| 280 | pci_pro_ok:
|
|---|
| 281 | xor ah, ah
|
|---|
| 282 | pop edi
|
|---|
| 283 | pop esi
|
|---|
| 284 | popfd
|
|---|
| 285 | clc
|
|---|
| 286 | retf
|
|---|
| 287 |
|
|---|
| 288 | pci_pro_select_reg:
|
|---|
| 289 | push edx
|
|---|
| 290 | mov eax, 800000h
|
|---|
| 291 | mov ax, bx
|
|---|
| 292 | shl eax, 8
|
|---|
| 293 | and di, 0FFh
|
|---|
| 294 | or ax, di
|
|---|
| 295 | and al, 0FCh
|
|---|
| 296 | mov dx, PCI_CFG1
|
|---|
| 297 | out dx, eax
|
|---|
| 298 | pop edx
|
|---|
| 299 | ret
|
|---|
| 300 |
|
|---|
| 301 | BIOS32 ends
|
|---|
| 302 |
|
|---|
| 303 | endif ; BX_PCIBIOS
|
|---|
| 304 |
|
|---|
| 305 | end
|
|---|
