Boot 36.4 KB
Newer Older
Jeffrey Lee's avatar
Jeffrey Lee committed
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
; Copyright 2009 Castle Technology Ltd
;
; Licensed under the Apache License, Version 2.0 (the "License");
; you may not use this file except in compliance with the License.
; You may obtain a copy of the License at
;
;     http://www.apache.org/licenses/LICENSE-2.0
;
; Unless required by applicable law or agreed to in writing, software
; distributed under the License is distributed on an "AS IS" BASIS,
; WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
; See the License for the specific language governing permissions and
; limitations under the License.
;
        GET     Hdr:ListOpts
        GET     Hdr:Macros
        GET     Hdr:System
        GET     Hdr:Machine.<Machine>
19
        GET     Hdr:HALSize.<HALSize>
Jeffrey Lee's avatar
Jeffrey Lee committed
20

21
        GET     Hdr:MEMM.VMSAv6
Jeffrey Lee's avatar
Jeffrey Lee committed
22 23 24 25 26 27

        GET     Hdr:Proc
        GET     Hdr:OSEntries
        GET     Hdr:HALEntries

        GET     hdr.omap3530
28
        GET     hdr.StaticWS
Jeffrey Lee's avatar
Jeffrey Lee committed
29 30 31
        GET     hdr.SDRC
        GET     hdr.Interrupts
        GET     hdr.Timers
32
        GET     hdr.GPIO
33 34
        GET     hdr.Copro15ops
        GET     hdr.UART
35
        GET     hdr.PRCM
36
        GET     hdr.GPMC
Jeffrey Lee's avatar
Jeffrey Lee committed
37

38
; This version assumes a RISC OS image starting OSROM_HALSize bytes after us.
Jeffrey Lee's avatar
Jeffrey Lee committed
39

40
; FIQ-based debugger - prints out the PC when the beagleboard/touchbook USER button is pressed
41
; The code installs itself when HAL_InitDevices is called with R0=123. e.g. SYS "OS_Hardware",123,,,,,,,,0,100
42 43 44
                GBLL FIQDebug
FIQDebug        SETL {FALSE}

45 46 47
                GBLL MoreDebug
MoreDebug       SETL Debug :LAND: {FALSE}

Jeffrey Lee's avatar
Jeffrey Lee committed
48 49 50 51 52
        AREA    |Asm$$Code|, CODE, READONLY, PIC

        EXPORT  rom_checkedout_ok

        IMPORT  HAL_Base
53 54
        IMPORT  DebugHALPrint
        IMPORT  DebugHALPrintReg
55
        IMPORT  DebugHALPrintByte
56
        IMPORT  SDMA_Had_POR
57
        IMPORT  RTC_Init
58
        IMPORT  DebugCallstack
59 60 61
        IMPORT  TPSRead
        IMPORT  TPSWrite
        IMPORT  IIC_DoOp_Poll
62
        IMPORT  CPUClk_Init
Jeffrey Lee's avatar
Jeffrey Lee committed
63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85

; v8 is used as pointer to RISC OS entry table throughout pre-MMU stage.
        MACRO
        CallOSM $entry, $reg
        LDR     ip, [v8, #$entry*4]
        MOV     lr, pc
        ADD     pc, v8, ip
        MEND

        MACRO
        CallOS  $entry, $tailcall
        ASSERT  $entry <= HighestOSEntry
 [ "$tailcall"=""
        MOV     lr, pc
 |
   [ "$tailcall"<>"tailcall"
        ! 0, "Unrecognised parameter to CallOS"
   ]
 ]
        LDR     pc, OSentries + 4*$entry
        MEND

rom_checkedout_ok
86
        ; On entry, v8 -> OS entry table, sb -> board config
Jeffrey Lee's avatar
Jeffrey Lee committed
87 88
        ; Register the attached RAM
        LDR     v1, =SDRC_Regs
89
        MOV     a1, #0
90
        MOV     sp, #0
Jeffrey Lee's avatar
Jeffrey Lee committed
91 92 93 94 95 96 97 98
        ; Check CS0
        LDR     a3, [v1, #SDRC_MCFG_0]
        LDR     a2, =&3FF00<<13
        ANDS    a3, a2, a3, LSL #13 ; Get CS0 RAM size
        BEQ     no_cs0
        LDR     a2, =CS0_SDRAM
        ADD     a3, a3, a2
        LDR     a4, =&FFFFFFFF
99
        ADD     sp, a2, #4096 ; HAL spec says that (for software reset compliance only?) stack should be 4K into first block
Jeffrey Lee's avatar
Jeffrey Lee committed
100 101 102 103 104 105 106 107 108
        STR     a1, [sp, #-4]!
        MOV     a1, #0
        CallOSM OS_AddRAM
no_cs0
        ; Check CS1
        LDR     a3, [v1, #SDRC_MCFG_1]
        LDR     a2, =&3FF00<<13
        ANDS    a3, a2, a3, LSL #13
        BEQ     no_cs1
109
        LDR     a2, =CS0_SDRAM
Jeffrey Lee's avatar
Jeffrey Lee committed
110 111 112 113 114 115 116
        LDR     a4, [v1, #SDRC_CS_CFG]
        AND     v2, a4, #7 ; Offset in 128MB units
        ADD     a2, a2, v2, LSL #20+7
        AND     v2, a4, #&300 ; Offset in 32MB units
        ADD     a2, a2, v2, LSL #20+5-8
        ADD     a3, a3, a2
        LDR     a4, =&FFFFFFFF
117 118
        CMP     sp, #0
        ADDEQ   sp, a2, #4096 ; If no CS0 set up stack in CS1
Jeffrey Lee's avatar
Jeffrey Lee committed
119 120 121 122
        STR     a1, [sp, #-4]!
        MOV     a1, #0
        CallOSM OS_AddRAM
no_cs1
123
        DebugChar v1,v2,71
124 125 126 127 128
        MOV     v1, a1
        BL      SDMA_Had_POR
        CMP     a1, #0
        MOVNE   a1, #OSStartFlag_RAMCleared :OR: OSStartFlag_POR
        MOVEQ   a1, #OSStartFlag_RAMCleared
129
        ADRL    a2, HAL_Base + OSROM_HALSize       ; a2 -> RISC OS image
Jeffrey Lee's avatar
Jeffrey Lee committed
130
        ADR     a3, HALdescriptor
131
        MOV     a4, v1
Jeffrey Lee's avatar
Jeffrey Lee committed
132 133 134 135 136 137
        CallOSM OS_Start


HALdescriptor   DATA
        DCD     HALFlag_NCNBWorkspace
        DCD     HAL_Base - HALdescriptor
138
        DCD     OSROM_HALSize
Jeffrey Lee's avatar
Jeffrey Lee committed
139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157
        DCD     HAL_EntryTable - HALdescriptor
        DCD     HAL_Entries
        DCD     HAL_WsSize


        MACRO
        HALEntry $name
        ASSERT  (. - HAL_EntryTable) / 4 = EntryNo_$name
        DCD     $name - HAL_EntryTable
        MEND

        MACRO
        NullEntry
        DCD     HAL_Null - HAL_EntryTable
        MEND

        IMPORT   Video_init
        IMPORT   Interrupt_Init
        IMPORT   Timer_Init
158
        IMPORT   PRCM_SetClocks
159
        IMPORT   USB_Init
160
        IMPORT   I2C_Init
161
        IMPORT   SDMA_Init
162
 [ :LNOT: HALDoesVideo
163
        IMPORT   VideoDevice_Init
164
 ]
165
        IMPORT   Audio_Init
166 167 168 169 170 171
        IMPORT   GPMC_Init
        IMPORT   NIC_Init
        IMPORT   NIC_GPMC_Config_IGEP
        IMPORT   NIC_GPMC_Config_DevKit
        IMPORT   NIC_SMSC
        IMPORT   NIC_DM9000
172
        IMPORT   GPIO_Init
Jeffrey Lee's avatar
Jeffrey Lee committed
173
        IMPORT   GPIOx_SetAsOutput
174
        IMPORT   GPIO_InitDevice
175
        IMPORT   NVMemory_Init
176 177 178 179

        EXPORT   Board_InitDevices_None
        EXPORT   Board_InitDevices_IGEP
        EXPORT   Board_InitDevices_DevKit
180
        EXPORT   Board_InitDevices_BeagleBoard
Jeffrey Lee's avatar
Jeffrey Lee committed
181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207

        IMPORT   HAL_IRQEnable
        IMPORT   HAL_IRQDisable
        IMPORT   HAL_IRQClear
        IMPORT   HAL_IRQSource
        IMPORT   HAL_IRQStatus
        IMPORT   HAL_FIQEnable
        IMPORT   HAL_FIQDisable
        IMPORT   HAL_FIQDisableAll
        IMPORT   HAL_FIQClear
        IMPORT   HAL_FIQSource
        IMPORT   HAL_FIQStatus

        IMPORT   HAL_Timers
        IMPORT   HAL_TimerDevice
        IMPORT   HAL_TimerGranularity
        IMPORT   HAL_TimerMaxPeriod
        IMPORT   HAL_TimerSetPeriod
        IMPORT   HAL_TimerPeriod
        IMPORT   HAL_TimerReadCountdown

        IMPORT   HAL_CounterRate
        IMPORT   HAL_CounterPeriod
        IMPORT   HAL_CounterRead
        IMPORT   HAL_CounterDelay

        IMPORT   HAL_IICBuses
208 209 210 211
        IMPORT   HAL_IICType
        IMPORT   HAL_IICDevice
        IMPORT   HAL_IICTransfer
        IMPORT   HAL_IICMonitorTransfer
Jeffrey Lee's avatar
Jeffrey Lee committed
212 213

        IMPORT   HAL_NVMemoryType
214 215 216 217 218 219
        IMPORT   HAL_NVMemorySize
        IMPORT   HAL_NVMemoryPageSize
        IMPORT   HAL_NVMemoryProtectedSize
        IMPORT   HAL_NVMemoryProtection
        IMPORT   HAL_NVMemoryRead
        IMPORT   HAL_NVMemoryWrite
Jeffrey Lee's avatar
Jeffrey Lee committed
220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235

        IMPORT   HAL_VideoFlybackDevice
        IMPORT   HAL_Video_SetMode
        IMPORT   HAL_Video_WritePaletteEntry
        IMPORT   HAL_Video_WritePaletteEntries
        IMPORT   HAL_Video_ReadPaletteEntry
        IMPORT   HAL_Video_SetInterlace
        IMPORT   HAL_Video_SetBlank
        IMPORT   HAL_Video_SetPowerSave
        IMPORT   HAL_Video_UpdatePointer
        IMPORT   HAL_Video_SetDAG
        IMPORT   HAL_Video_VetMode
        IMPORT   HAL_Video_PixelFormats
        IMPORT   HAL_Video_Features
        IMPORT   HAL_Video_BufferAlignment
        IMPORT   HAL_Video_OutputFormat
236
        IMPORT   HAL_Video_IICOp ; Implemented in s.I2C
Jeffrey Lee's avatar
Jeffrey Lee committed
237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267

        IMPORT   HAL_UARTPorts
        IMPORT   HAL_UARTStartUp
        IMPORT   HAL_UARTShutdown
        IMPORT   HAL_UARTFeatures
        IMPORT   HAL_UARTReceiveByte
        IMPORT   HAL_UARTTransmitByte
        IMPORT   HAL_UARTLineStatus
        IMPORT   HAL_UARTInterruptEnable
        IMPORT   HAL_UARTRate
        IMPORT   HAL_UARTFormat
        IMPORT   HAL_UARTFIFOSize
        IMPORT   HAL_UARTFIFOClear
        IMPORT   HAL_UARTFIFOEnable
        IMPORT   HAL_UARTFIFOThreshold
        IMPORT   HAL_UARTInterruptID
        IMPORT   HAL_UARTBreak
        IMPORT   HAL_UARTModemControl
        IMPORT   HAL_UARTModemStatus
        IMPORT   HAL_UARTDevice

        IMPORT   HAL_DebugRX
        IMPORT   HAL_DebugTX

        IMPORT   HAL_ATAControllerInfo

        IMPORT   HAL_KbdScanSetup
        IMPORT   HAL_KbdScan
        IMPORT   HAL_KbdScanFinish
        IMPORT   HAL_KbdScanInterrupt

268 269 270 271 272
        IMPORT   HAL_USBControllerInfo
        IMPORT   HAL_USBPortPower
        IMPORT   HAL_USBPortStatus
        IMPORT   HAL_USBPortIRQ

Jeffrey Lee's avatar
Jeffrey Lee committed
273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301
HAL_EntryTable  DATA
        HALEntry HAL_Init

        HALEntry HAL_IRQEnable
        HALEntry HAL_IRQDisable
        HALEntry HAL_IRQClear
        HALEntry HAL_IRQSource
        HALEntry HAL_IRQStatus
        HALEntry HAL_FIQEnable
        HALEntry HAL_FIQDisable
        HALEntry HAL_FIQDisableAll
        HALEntry HAL_FIQClear
        HALEntry HAL_FIQSource
        HALEntry HAL_FIQStatus

        HALEntry HAL_Timers
        HALEntry HAL_TimerDevice
        HALEntry HAL_TimerGranularity
        HALEntry HAL_TimerMaxPeriod
        HALEntry HAL_TimerSetPeriod
        HALEntry HAL_TimerPeriod
        HALEntry HAL_TimerReadCountdown

        HALEntry HAL_CounterRate
        HALEntry HAL_CounterPeriod
        HALEntry HAL_CounterRead
        HALEntry HAL_CounterDelay

        HALEntry HAL_NVMemoryType
302 303 304 305
        HALEntry HAL_NVMemorySize
        HALEntry HAL_NVMemoryPageSize
        HALEntry HAL_NVMemoryProtectedSize
        HALEntry HAL_NVMemoryProtection
Jeffrey Lee's avatar
Jeffrey Lee committed
306
        NullEntry ; HAL_NVMemoryIICAddress
307 308
        HALEntry HAL_NVMemoryRead
        HALEntry HAL_NVMemoryWrite
Jeffrey Lee's avatar
Jeffrey Lee committed
309 310

        HALEntry HAL_IICBuses
311
        HALEntry HAL_IICType
Jeffrey Lee's avatar
Jeffrey Lee committed
312 313
        NullEntry ; HAL_IICSetLines
        NullEntry ; HAL_IICReadLines
314 315 316
        HALEntry HAL_IICDevice
        HALEntry HAL_IICTransfer
        HALEntry HAL_IICMonitorTransfer
Jeffrey Lee's avatar
Jeffrey Lee committed
317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398

        HALEntry HAL_VideoFlybackDevice
        HALEntry HAL_Video_SetMode
        HALEntry HAL_Video_WritePaletteEntry
        HALEntry HAL_Video_WritePaletteEntries
        HALEntry HAL_Video_ReadPaletteEntry
        HALEntry HAL_Video_SetInterlace
        HALEntry HAL_Video_SetBlank
        HALEntry HAL_Video_SetPowerSave
        HALEntry HAL_Video_UpdatePointer
        HALEntry HAL_Video_SetDAG
        HALEntry HAL_Video_VetMode
        HALEntry HAL_Video_PixelFormats
        HALEntry HAL_Video_Features
        HALEntry HAL_Video_BufferAlignment
        HALEntry HAL_Video_OutputFormat

        NullEntry ; HALEntry HAL_MatrixColumns
        NullEntry ; HALEntry HAL_MatrixScan

        NullEntry ; HALEntry HAL_TouchscreenType
        NullEntry ; HALEntry HAL_TouchscreenRead
        NullEntry ; HALEntry HAL_TouchscreenMode
        NullEntry ; HALEntry HAL_TouchscreenMeasure

        HALEntry HAL_MachineID

        HALEntry HAL_ControllerAddress
        HALEntry HAL_HardwareInfo
        HALEntry HAL_SuperIOInfo
        HALEntry HAL_PlatformInfo
        NullEntry ; HALEntry HAL_CleanerSpace

        HALEntry HAL_UARTPorts
        HALEntry HAL_UARTStartUp
        HALEntry HAL_UARTShutdown
        HALEntry HAL_UARTFeatures
        HALEntry HAL_UARTReceiveByte
        HALEntry HAL_UARTTransmitByte
        HALEntry HAL_UARTLineStatus
        HALEntry HAL_UARTInterruptEnable
        HALEntry HAL_UARTRate
        HALEntry HAL_UARTFormat
        HALEntry HAL_UARTFIFOSize
        HALEntry HAL_UARTFIFOClear
        HALEntry HAL_UARTFIFOEnable
        HALEntry HAL_UARTFIFOThreshold
        HALEntry HAL_UARTInterruptID
        HALEntry HAL_UARTBreak
        HALEntry HAL_UARTModemControl
        HALEntry HAL_UARTModemStatus
        HALEntry HAL_UARTDevice

        HALEntry HAL_Reset

        HALEntry HAL_DebugRX
        HALEntry HAL_DebugTX

        NullEntry ; HAL_PCIFeatures
        NullEntry ; HAL_PCIReadConfigByte
        NullEntry ; HAL_PCIReadConfigHalfword
        NullEntry ; HAL_PCIReadConfigWord
        NullEntry ; HAL_PCIWriteConfigByte
        NullEntry ; HAL_PCIWriteConfigHalfword
        NullEntry ; HAL_PCIWriteConfigWord
        NullEntry ; HAL_PCISpecialCycle
        NullEntry ; HAL_PCISlotTable
        NullEntry ; HAL_PCIAddresses

        HALEntry HAL_ATAControllerInfo
        NullEntry ; HAL_ATASetModes
        NullEntry ; HAL_ATACableID

        HALEntry HAL_InitDevices

        HALEntry HAL_KbdScanSetup
        HALEntry HAL_KbdScan
        HALEntry HAL_KbdScanFinish
        HALEntry HAL_KbdScanInterrupt

        HALEntry HAL_PhysInfo

399
        HALEntry HAL_USBControllerInfo
Jeffrey Lee's avatar
Jeffrey Lee committed
400 401 402 403 404

        NullEntry ;HALEntry HAL_MonitorLeadID

        NullEntry ;HALEntry HAL_Video_Render

405 406 407
        HALEntry HAL_USBPortPower
        HALEntry HAL_USBPortStatus
        HALEntry HAL_USBPortIRQ
Jeffrey Lee's avatar
Jeffrey Lee committed
408

409
        HALEntry HAL_Video_IICOp
Jeffrey Lee's avatar
Jeffrey Lee committed
410

411 412 413 414 415
        NullEntry ; HAL_TimerIRQClear
        NullEntry ; HAL_TimerIRQStatus

        HALEntry HAL_ExtMachineID

Jeffrey Lee's avatar
Jeffrey Lee committed
416 417 418 419 420 421 422
HAL_Entries     * (.-HAL_EntryTable)/4


;--------------------------------------------------------------------------------------


HAL_Init
423
        Entry   "v1-v3"
Jeffrey Lee's avatar
Jeffrey Lee committed
424 425

        STR     a2, NCNBWorkspace
426
        STR     a2, NCNBAllocNext
Jeffrey Lee's avatar
Jeffrey Lee committed
427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446

        BL      SetUpOSEntries

        ; Map in the main IO ranges (L3, L4) and then store the offsets to the components we're interested in
        MOV     a1, #0
        LDR     a2, =L3_Control
        MOV     a3, #L3_Size
        CallOS  OS_MapInIO
        STR     a1, L3_Log

        MOV     a1, #0
        LDR     a2, =L4_Core
        MOV     a3, #L4_Core_Size
        CallOS  OS_MapInIO
        STR     a1, L4_Core_Log

        ; Clockman
        ADD     a3, a1, #L4_ClockMan-L4_Core
        STR     a3, L4_ClockMan_Log

447 448 449 450
        ; Display
        ADD     a3, a1, #L4_Display-L4_Core
        STR     a3, L4_Display_Log

451 452 453 454 455
        ; USB
        ADD     a3, a1, #L4_USBTLL-L4_Core
        STR     a3, L4_USBTLL_Log
        ADD     a3, a1, #L4_USB_Host-L4_Core
        STR     a3, L4_USB_Host_Log
456 457
        ADD     a3, a1, #L4_USB_OTG-L4_Core
        STR     a3, L4_USB_OTG_Log
458

459 460 461 462
        ; DMA
        ADD     a3, a1, #L4_sDMA-L4_Core
        STR     a3, L4_sDMA_Log

463 464 465 466 467 468 469 470 471 472 473 474 475 476
        MOV     a1, #0
        LDR     a2, =L4_Wakeup
        MOV     a3, #L4_Wakeup_Size
        CallOS  OS_MapInIO
        STR     a1, L4_Wakeup_Log

        ; L4_PowerMan, L4_32KTIMER, L4_GPIO1
        ADD     a3, a1, #L4_PowerMan-L4_Wakeup
        STR     a3, L4_PowerMan_Log
        ADD     a3, a1, #L4_32KTIMER-L4_Wakeup
        STR     a3, L4_32KTIMER_Log
        ADD     a3, a1, #L4_GPIO1-L4_Wakeup
        STR     a3, L4_GPIO1_Log

Jeffrey Lee's avatar
Jeffrey Lee committed
477 478 479 480 481 482 483 484 485 486
        MOV     a1, #0
        LDR     a2, =L4_Per
        MOV     a3, #L4_Per_Size
        CallOS  OS_MapInIO
        STR     a1, L4_Per_Log

        ; Timers
        ADD     a2, a1, #TIMER_BASE-L4_Per
        STR     a2, Timers_Log

487 488 489 490 491 492 493 494 495 496 497 498
        ; GPIO2-6
        ADD     a2, a1, #L4_GPIO2-L4_Per
        STR     a2, L4_GPIO2_Log
        ADD     a2, a1, #L4_GPIO3-L4_Per
        STR     a2, L4_GPIO3_Log
        ADD     a2, a1, #L4_GPIO4-L4_Per
        STR     a2, L4_GPIO4_Log
        ADD     a2, a1, #L4_GPIO5-L4_Per
        STR     a2, L4_GPIO5_Log
        ADD     a2, a1, #L4_GPIO6-L4_Per
        STR     a2, L4_GPIO6_Log

499 500 501 502 503 504 505
        ; Interrupt controller
        MOV     a1, #0
        LDR     a2, =MPU_INTC
        MOV     a3, #MPU_INTC_SIZE
        CallOS  OS_MapInIO
        STR     a1, MPU_INTC_Log

506 507 508 509 510 511 512
        ; GPMC
        MOV     a1, #0
        LDR     a2, =GPMC_Regs
        MOV     a3, #4096 ; only a small register file
        CallOS  OS_MapInIO
        STR     a1, GPMC_Regs_Log

513 514 515 516 517 518 519 520 521 522 523 524 525 526 527
        ; Recover board config from SRAM
        MOV     a1, #0
        LDR     a2, =IntSRAM_Base
        MOV     a3, #IntSRAM_Size
        CallOS  OS_MapInIO
        STR     a1, IntSRAM_Log
        MOV     a2, #BoardConfig_Size
10      SUBS    a2, a2, #4
        LDR     a3, [a1, a2]
        STR     a3, [sb, a2]
        BGT     %BT10
        ; Now do phys -> log conversion on all the addresses contained within
        ; RISC OS doesn't currently provide a phys->log conversion function, so we do it manually based around the regions that were mapped in above
        ASSERT  BoardConfig_DebugUART = 0
        ASSERT  BoardConfig_DebugUART+4 = BoardConfig_HALUART
Jeffrey Lee's avatar
Jeffrey Lee committed
528
        MOV     a1, #BoardConfig_HALUART+?BoardConfig_HALUART-4
529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544
10      BL      phys2log
        SUBS    a1, a1, #4
        BGE     %BT10
        MOV     a1, #BoardConfig_HALI2C
        BL      phys2log
        STR     a2, I2C1Block+I2C_HW
        MOV     a1, #BoardConfig_HALI2C+4
        BL      phys2log
        STR     a2, I2C2Block+I2C_HW
        MOV     a1, #BoardConfig_HALI2C+8
        BL      phys2log
        STR     a2, I2C3Block+I2C_HW

 [ Debug
        DebugTX "HAL_Init"
 ]
545

546
        BL      PRCM_SetClocks ; Calls Timer_init & starts GPTIMER2
547

Jeffrey Lee's avatar
Jeffrey Lee committed
548 549
        BL      I2C_Init ; Uses GPTIMER2

550 551
        BL      GPIO_Init ; Make sure all GPIO IRQs are disabled before we potentially start enabling them

552 553 554 555
        LDR     a1, [sb, #BoardConfig_MachID]
        LDR     a2, =MachID_BeagleBoard
        CMP     a1, a2
        BNE     %FT10
556 557 558 559 560 561 562
        ; Read/report beagleboard revision GPIOs (GPIOs 171-173)
        ; First we need to set up the right pin mux settings, as old
        ; x-loader/u-boot versions might not do them all for us
        LDR     a1, L4_Core_Log
        ADD     a1, a1, #&2100
        ADD     a1, a1, #&00C8 ; CONTROL_PADCONF_MCBSPI1_CLK
        LDR     a2, =&011C011C ; GPIO171 & 172 input with pull-up enabled
Jeffrey Lee's avatar
Jeffrey Lee committed
563
        STR     a2, [a1], #4 ; configure, and point to CONTROL_PADCONF_MCBSPI1_SOMI
564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582
        LDR     a2, [a1]
        MOV     a2, a2, LSR #16
        MOV     a2, a2, LSL #16
        ORR     a2, a2, #&11C ; GPIO173 as above
        STR     a2, [a1]
        ; Now configure the GPIO controller
        LDR     v1, L4_GPIO_Table+4*(171>>5)
        MOV     v2, #7 :SHL: (171 :AND: 31)
        GPIO_SetAsInput v1, v2, a1
        ; Wait a bit for input to settle?
        MOV     a1, #512
        BL      HAL_CounterDelay
        GPIO_GetInput v1, v1, v2
        MOV     v1, v1, LSR #(171 :AND: 31)
 [ Debug
        DebugReg v1, "BB revision GPIOs="
 ]
10

Jeffrey Lee's avatar
Jeffrey Lee committed
583 584
        ; Do extra board-specific GPIO init
        ; Touchbook & classic beagle need TPS LED A turning off for EHCI
585 586
        ; Beagle xM A/B needs TPS GPIO 1 off and TPS LED A on for DVI & EHCI
        ; Beagle xM C+ needs TPS GPIO 1 off and TPS LED A off for DVI & EHCI
587
        ; EVM needs GPIO 22 on & GPIO 61 off for EHCI
Jeffrey Lee's avatar
Jeffrey Lee committed
588 589 590
        ; For the moment, just work out what board it is based around the
        ; Linux machine ID & OMAP type
        LDR     a1, [sb, #BoardConfig_MachID]
591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621
        LDR     a2, =MachID_OMAP35xEVM
        BNE     %FT05
        ; EVM
        ; It looks like u-boot sets things up assuming an ETK module is in use.
        ; But we want to use USB, so we need to tweak a few pin mux settings.
        LDR     a1, L4_Core_Log
        ADD     a1, a1, #&2000
        LDR     a2, [a1, #&5E8] ; GPIO 20, GPIO 21
        MOV     a2, a2, LSL #16
        MOV     a2, a2, LSR #16
        ORR     a2, a2, #&011C0000 ; GPIO 21 input/bidirectional with pull-up enabled
        STR     a2, [a1, #&5E8]
        LDR     a2, [a1, #&5EC]
        MOV     a2, a2, LSR #16
        MOV     a2, a2, LSL #16
        ORR     a2, a2, #&011C ; Ditto for GPIO 22
        STR     a2, [a1, #&5EC]
        LDR     a2, [a1, #&0C8]
        MOV     a2, a2, LSR #16
        MOV     a2, a2, LSL #16
        ORR     a2, a2, #&011C ; Ditto for GPIO 61
        STR     a2, [a1, #&0C8]
        ; Now set the GPIOs
        MOV     a1, #22
        MOV     a2, #1
        BL      GPIOx_SetAsOutput ; Enables VBUS
        MOV     a1, #61
        MOV     a2, #0
        BL      GPIOx_SetAsOutput ; Enables the port
        B       %FT20
05
622
        LDR     a2, =MachID_BeagleBoard
Jeffrey Lee's avatar
Jeffrey Lee committed
623
        CMP     a1, a2
624
        LDRNE   a2, =MachID_TouchBook
Jeffrey Lee's avatar
Jeffrey Lee committed
625 626 627 628 629 630 631 632 633 634 635 636 637 638
        CMPNE   a1, a2
        BNE     %FT20
        ; It's a BB/TouchBook; check OMAP type to work out if it's an -xM
        LDR     a2, L4_Wakeup_Log
        ADD     a2, a2, #(L4_CONTROL_IDCODE-L4_Wakeup) :AND: &FF00
        LDR     a2, [a2, #(L4_CONTROL_IDCODE-L4_Wakeup) :AND: &00FF]
        LDR     a1, =HAWKEYE_AMDM37x
        MOV     a2, a2, LSL #4
        CMP     a1, a2, LSR #16
        MOV     a2, #0
        BNE     %FT10
        ; XM
        MOV     a1, #GPIO_PIN_MAX+1
        BL      GPIOx_SetAsOutput
639 640 641 642 643 644
        ; XM rev A3 also uses TPS GPIO2, and can use it for turning DVI on/off (unlike the TPS GPIO1 that had to be off all the time?)
        ; Previously this was allegedly used for providing power to the camera interface, and defaulted to on in Linux
        MOV     a1, #GPIO_PIN_MAX+2
        STRB    a1, [sb, #BoardConfig_VideoGPIO]
        MOV     a2, #1
        BL      GPIOx_SetAsOutput
645 646 647 648 649 650
        ; Check whether this is a rev A/B xM. If it isn't we'll assume it's
        ; rev C+, like the new x-loader/u-boot/linux versions do
        CMP     v1, #BeagleBoard_xMA
        CMPNE   v1, #BeagleBoard_xMB
        MOVEQ   a2, #1 ; xM A/B
        MOVNE   a2, #0 ; xM C+
Jeffrey Lee's avatar
Jeffrey Lee committed
651 652 653 654 655 656
        ; .. fall through to non-XM bit
10
        MOV     a1, #GPIO_PIN_MAX+TPS_GPIO_PIN_MAX
        BL      GPIOx_SetAsOutput
20

657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749
        ; TouchBook battery charging
        LDR     a1, [sb, #BoardConfig_MachID]
        LDR     a2, =MachID_TouchBook
        CMP     a1, a2
        BNE     %FT10
 [ Debug
        DebugTX "Enabling TB battery charging"
 ]
        SUB     sp, sp, #4
        MOV     a2, sp
        MOV     a3, #1
        ADRL    v1, IIC_DoOp_Poll
        ; Make sure MADC clocks are enabled
        MOV     a1, #&49*2
        MOV     a4, #&91 ; GPBR1
        BL      TPSRead
        CMP     a1, #0
        BNE     %FT9 ; Fail, just skip it
        LDRB    ip, [a2]
        ORR     ip, ip, #&90 ; DEFAULT_MADC_CLK_EN, MADC_HFCLK_EN
        STRB    ip, [a2]
        MOV     a1, #&49*2
        BL      TPSWrite
        CMP     a1, #0
        BNE     %FT9
        ; Disable the automatic battery charging so we can tweak the settings
        MOV     a1, #&4b*2
        MOV     a4, #&3d ; BOOT_BCI
        BL      TPSRead
        CMP     a1, #0
        BNE     %FT9
        LDRB    v3, [a2]
        BIC     v3, v3, #&7 ; BCIAUTOAC, BCIAUTOUSB, CVENAC
        STRB    v3, [a2]
        MOV     a1, #&4b*2
        BL      TPSWrite
        CMP     a1, #0
        BNE     %FT9
        ; Now stop the current charging session, if any
        MOV     a1, #&4a*2
        MOV     a4, #&75 ; BCIMDKEY
        MOV     ip, #&2A ; EKEY6
        STRB    ip, [a2]
        BL      TPSWrite
        CMP     a1, #0
        BNE     %FT9
        ; Wait until it's really stopped
        MOV     v2, #1000
7
        MOV     a1, #&4a*2
        MOV     a4, #&76 ; BCIMSTATEC
        BL      TPSRead
        CMP     a1, #0
        BNE     %FT9
        LDREQB    ip, [a2]
        TSTEQ     ip, #&30 ; Accept any non-charging, non-overvoltage state
        BEQ     %FT8
        SUBS    v2, v2, #1
        BGT     %BT7
 [ Debug
        DebugTX "Timeout waiting for charging to stop"
 ]
        B       %FT9 ; Timeout
8
        ; Now set CGAIN to double the charging current
        MOV     a1, #&4a*2
        MOV     a4, #&97 ; BCICTL1
        BL      TPSRead
        CMP     a1, #0
        BNE     %FT9
        LDRB    ip, [a2]
        ORR     ip, ip, #&20 ; CGAIN
        STRB    ip, [a2]
        MOV     a1, #&4a*2
        BL      TPSWrite
        CMP     a1, #0
        BNE     %FT9
        ; Unlock BCIIREF1
        MOV     a1, #&4a*2
        MOV     a4, #&85 ; BCIMFKEY
        MOV     ip, #&E7 ; MFKEY13
        STRB    ip, [a2]
        BL      TPSWrite
        CMP     a1, #0
        BNE     %FT9
        ; Increase charging current to max
        MOV     a1, #&4a*2
        MOV     a4, #&9B ; BCIIREF1
        MOV     ip, #&FF
        STRB    ip, [a2]
        BL      TPSWrite
        CMP     a1, #0
        BNE     %FT9
750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767
        ; Wait for any current BCI conversion to finish
7
        MOV     a1, #&4a*2
        MOV     a4, #&12 ; CTRL_SW1
        BL      TPSRead
        CMP     a1, #0
        BNE     %FT9
        LDRB    ip, [a2]
        TST     ip, #&18 ; Check both BCI and USB, since we also set the USB average bit
        BEQ     %BT7
        ; Enable BCI_USBAVERAGE to increase accuracy of BCI measurements
        MOV     a1, #&4a*2
        MOV     a4, #&0e
        MOV     ip, #&3f
        STRB    ip, [a2]
        BL      TPSWrite
        CMP     a1, #0
        BNE     %FT9
768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783
        ; Enable automatic charging again
        ORR     v3, v3, #&5 ; BCIAUTOAC, CVENAC
        STRB    v3, [a2]
        MOV     a1, #&4b*2
        MOV     a4, #&3d ; BOOT_BCI
        BL      TPSWrite
9
        ADD     sp, sp, #4
 [ Debug
        CMP     a1, #0
        BEQ     %FT10
        DebugRegByte a4, "Failed on register "
        DebugRegByte a1, ", err="
 ]
10

784 785 786
 [ MoreDebug
        DebugTX "Video_init"
 ]
787
        BL      Video_init ; Uses GPTIMER2
Jeffrey Lee's avatar
Jeffrey Lee committed
788

789 790 791
 [ MoreDebug
        DebugTX "USB_Init"
 ]
792 793
        BL      USB_Init ; Uses GPTIMER2

794
 [ MoreDebug
795
        DebugTX "NVMemory_Init"
796
 ]
797
        BL      NVMemory_Init
798

799 800 801
 [ MoreDebug
        DebugTX "Timer_Init"
 ]
802
        BL      Timer_Init ; Re-inits timers
Jeffrey Lee's avatar
Jeffrey Lee committed
803

804 805 806
 [ MoreDebug
        DebugTX "Interrupt_Init"
 ]
Jeffrey Lee's avatar
Jeffrey Lee committed
807 808
        BL      Interrupt_Init

809 810 811
 [ MoreDebug
        DebugTX "GPMC_Init"
 ]
812 813
        BL      GPMC_Init

814 815
        LDRB    v1, [sb, #BoardConfig_NumUART]
10      SUBS    v1, v1, #1
Jeffrey Lee's avatar
Jeffrey Lee committed
816 817 818 819 820 821 822 823 824 825 826 827
 [ Debug
        BLT     %FT20
        ; Don't reset the debug UART
        LDR     a3, [sb, #BoardConfig_DebugUART]
        ADD     a2, sb, v1, LSL #2
        LDR     a2, [a2, #BoardConfig_HALUART]
        CMP     a3, a2
        BEQ     %BT10
        MOV     a1, v1
        ADR     lr, %BT10
        B       HAL_UARTStartUp
 |
828 829 830
        MOVGE   a1, v1
        ADRGE   lr, %BT10
        BGE     HAL_UARTStartUp
Jeffrey Lee's avatar
Jeffrey Lee committed
831 832
 ]
20
Jeffrey Lee's avatar
Jeffrey Lee committed
833 834 835
        ; Mark HAL as initialised
        STR     pc, HALInitialised ; Any nonzero value will do

Jeffrey Lee's avatar
Jeffrey Lee committed
836 837
        EXIT

838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855
; Dodgy phys->log conversion using the mapped in IO ranges
; In/out: a1 = offset into sb of address to get/put
; Out: a2 = log addr
; Corrupts a3
phys2log
        LDR     a3, [sb, a1]
        CMP     a3, #0 ; Null pointers are valid; ignore them
        MOVEQ   a2, #0
        MOVEQ   pc, lr
        SUB     a2, a3, #L3_Control
        CMP     a2, #L3_Size
        LDRLO   a3, L3_Log
        BLO     %FT10
        SUB     a2, a3, #L4_Per
        CMP     a2, #L4_Per_Size
        LDRLO   a3, L4_Per_Log
        BLO     %FT10
        SUB     a2, a3, #L4_Core
856 857 858 859
        CMP     a2, #L4_Core_Size
        LDRLO   a3, L4_Core_Log
        SUBHI   a2, a2, #L4_Wakeup-L4_Core
        LDRHI   a3, L4_Wakeup_Log
860 861 862 863 864
10
        ADD     a2, a2, a3
        STR     a2, [sb, a1]
        MOV     pc, lr

Jeffrey Lee's avatar
Jeffrey Lee committed
865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886
; Initialise and relocate the entry table.
SetUpOSEntries  ROUT
        STR     a1, OSheader
        LDR     a2, [a1, #OSHdr_NumEntries]
        CMP     a2, #HighestOSEntry+1
        MOVHI   a2, #HighestOSEntry+1

        ADR     a3, OSentries
        LDR     a4, [a1, #OSHdr_Entries]
        ADD     a4, a4, a1

05      SUBS    a2, a2, #1
        LDR     ip, [a4, a2, LSL #2]
        ADD     ip, ip, a4
        STR     ip, [a3, a2, LSL #2]
        BNE     %BT05
        ; Fall through

HAL_Null
        MOV     pc, lr

HAL_InitDevices
887
 [ FIQDebug
888 889
        CMP     a1, #123
        BNE     %FT10
890 891 892 893 894 895 896
        LDR     a1, =&E51FF004
        ADR     a2, FIQRoutine
        MOV     a4, #&1C
        STMIA   a4,{a1-a2,sb}
        ; Sync cache
        MOV     a1, #0
        MCR     p15, 0, a1, c7, c11, 1 ; Clean DCache by VA to PoU
897
        myDSB ; wait for clean to complete
898
        MCR     p15, 0, a1, c7, c5, 1 ; invalidate ICache entry (to PoC)
899 900 901
        MCR     p15, 0, a1, c7, c5, 6 ; invalidate entire BTC
        myDSB ; wait for cache invalidation to complete
        myISB ; wait for BTC invalidation to complete?
902 903 904 905 906 907 908 909 910
        ; Now reconfigure the USER button (GPIO 4/7) to fire an FIQ
        LDR     a2, L4_Wakeup_Log
        ADD     a2, a2, #(L4_CONTROL_IDCODE-L4_Wakeup) :AND: &FF00
        LDR     a2, [a2, #(L4_CONTROL_IDCODE-L4_Wakeup) :AND: &00FF]
        LDR     a1, =HAWKEYE_AMDM37x
        MOV     a2, a2, LSL #4
        CMP     a1, a2, LSR #16
        MOVEQ   a3, #1:SHL:4 ; It's an AM/DM37x, so assume BBxM
        MOVNE   a3, #1:SHL:7 ; Else assume user button on GPIO 7
911 912
        LDR     a1, L4_GPIO1_Log
        LDR     a2, [a1, #GPIO_OE]
913
        ORR     a2, a2, a3 ; Configure as input
914 915 916 917 918
        STR     a2, [a1, #GPIO_OE]
        MOV     a2, #0
        STR     a2, [a1, #GPIO_LEVELDETECT0]
        STR     a2, [a1, #GPIO_LEVELDETECT1]
        STR     a2, [a1, #GPIO_FALLINGDETECT]
919 920
        STR     a3, [a1, #GPIO_RISINGDETECT] ; Enable IRQ on rising edge
        STR     a3, [a1, #GPIO_IRQENABLE1] ; Set MPU as interrupt target
921
        MOV     a1, #29 ; GPIO1 IRQ
922 923
        B       HAL_FIQEnable ; tail-optimised, repeating the HAL device init would be a bad thing!
10
924
 ]
925
        Entry   "v1-v3"
926
        ; Common HAL devices
927
        BL      CPUClk_Init
928 929
        BL      RTC_Init
        BL      SDMA_Init
930
 [ :LNOT: HALDoesVideo
931
        BL      VideoDevice_Init
932
 ]
933
        BL      Audio_Init
934 935 936 937 938 939 940 941 942 943 944 945 946
        ; Board-specific HAL devices
        LDR     pc, [sb, #BoardConfig_InitDevices]
Board_InitDevices_None
        EXIT

Board_InitDevices_IGEP
        ; SMSC NIC on GPMC CS 5, GPIO IRQ 176
        MOV     a1, #5
        ADRL    a2, NIC_GPMC_Config_IGEP
        MOV     a3, #176
        ADRL    a4, NIC_SMSC
        MOV     v1, #256 ; 256 bytes is all we need... although OS_MapInIO will only map in a minimum of 1MB!
        BL      NIC_Init
947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969
        ; Determine board revision for GPIO device
        ; First set up pin mux settings
        LDR     a1, L4_Core_Log
        ADD     a1, a1, #&2500
        ADD     a1, a1, #&00F8 ; CONTROL_PADCONF_ETK_D14
        LDR     a2, [a1]
        MOV     a2, a2, LSR #16
        MOV     a2, a2, LSL #16
        ORR     a2, a2, #&0104 ; GPIO28: Input, pull-down (disabled), M4
        STR     a2, [a1]
        ; Now probe GPIO
        GPIO_PrepareC v1,v2,28
        GPIO_SetAsInput v1,v2,v3
        ; Wait a bit for input to settle?
        MOV     a1, #512
        BL      HAL_CounterDelay
        GPIO_GetInput v3,v1,v2
        CMP     v3, #0
        MOVNE   a2, #GPIORevision_IGEPv2_BC
        MOVEQ   a2, #GPIORevision_IGEPv2_C
        MOV     a1, #GPIOType_OMAP3_IGEPv2
        ; Now init the device
        BL      GPIO_InitDevice
970 971 972 973 974 975 976 977
        EXIT

Board_InitDevices_DevKit
        ; DM9000 on GPMC 6, GPIO IRQ 25
        MOV     a1, #6
        ADRL    a2, NIC_GPMC_Config_DevKit
        MOV     a3, #25
        ADRL    a4, NIC_DM9000
978
        MOV     v1, #2048 ; The DM9000 doesn't have a proper address bus. Instead, the DevKit connects GPMC address pin 10 to the DM9000's CMD pin, which is used to select between the INDEX and DATA registers. So we'll map in 2K of memory (which happens to be the max the GPMC supports in non-muxed address/data mode)
979
        BL      NIC_Init
980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001
        ; Init GPIO HAL device
        MOV     a1, #GPIOType_OMAP3_DevKit8000
        MOV     a2, #GPIORevision_DevKit8000_Unknown
        BL      GPIO_InitDevice
        EXIT

Board_InitDevices_BeagleBoard
        ; Determine board revision for GPIO device
        ; HAL_Init will have set everything up already, so we can just read the pins
        LDR     v1, L4_GPIO_Table+4*(171>>5)
        MOV     v2, #7 :SHL: (171 :AND: 31)
        GPIO_GetInput v1, v1, v2
        MOV     v1, v1, LSR #(171 :AND: 31)
        ADR     a3, BBGPIORevTable
10
        LDMIA   a3!,{a1-a2}
        CMP     a1, #-1
        EXIT    EQ
        CMP     a1, v1
        BNE     %BT10
        MOV     a1, #GPIOType_OMAP3_BeagleBoard
        BL      GPIO_InitDevice
Jeffrey Lee's avatar
Jeffrey Lee committed
1002 1003
        EXIT

1004 1005 1006 1007 1008 1009 1010 1011 1012
BBGPIORevTable
        DCD     BeagleBoard_AB, GPIORevision_BeagleBoard_AB
        DCD     BeagleBoard_C123, GPIORevision_BeagleBoard_C123
        DCD     BeagleBoard_C4, GPIORevision_BeagleBoard_C4
        DCD     BeagleBoard_xMA, GPIORevision_BeagleBoard_xMA
        DCD     BeagleBoard_xMB, GPIORevision_BeagleBoard_xMB
        DCD     BeagleBoard_xMC, GPIORevision_BeagleBoard_xMC
        DCD     -1

Jeffrey Lee's avatar
Jeffrey Lee committed
1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026
HAL_ControllerAddress
        MOV     a1, #0
        MOV     pc, lr

HAL_HardwareInfo
        LDR     ip, =&FFFFFF00
        STR     ip, [a1]
        MOV     ip, #0
        STR     ip, [a2]
        LDR     ip, =&00FFFF00
        STR     ip, [a3]
        MOV     pc, lr

HAL_PlatformInfo
1027 1028 1029 1030 1031 1032
        ; TouchBook can do soft-off, others can't (yet)
        LDR     ip, [sb, #BoardConfig_MachID]
        LDR     a1, =MachID_TouchBook
        CMP     ip, a1
        MOVNE   ip, #2_10000                    ; no podules,no PCI cards,no multi CPU,no soft off,and soft ROM
        MOVEQ   ip, #2_11000
Jeffrey Lee's avatar
Jeffrey Lee committed
1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044
        STR     ip, [a2]
        MOV     ip, #2_11111                    ; mask of valid bits
        STR     ip, [a3]
        MOV     pc, lr

HAL_SuperIOInfo
        MOV     ip, #0
        STR     ip, [a1]
        STR     ip, [a2]
        MOV     pc, lr

HAL_MachineID
1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059
        MOV     a1, #0
        MOV     a2, #0
        MOV     pc, lr

HAL_ExtMachineID
        MOVS    ip, a1
        MOV     a1, #16
        MOVEQ   pc, lr
        LDR     a2, L4_Wakeup_Log
        ADD     a2, a2, #(L4_DIE_ID-L4_Wakeup) :AND: &FF00
        ADD     a2, a2, #(L4_DIE_ID-L4_Wakeup) :AND: &00FF
        LDMIA   a2!, {a3-a4}
        STMIA   ip!, {a3-a4}
        LDMIA   a2, {a3-a4}
        STMIA   ip, {a3-a4}
Jeffrey Lee's avatar
Jeffrey Lee committed
1060 1061 1062
        MOV     pc, lr

; Shifts to determine number of bytes/words to allocate in table.
1063
NibbleShift     *       12 ; 1<<12 = 4K ARM page size
Jeffrey Lee's avatar
Jeffrey Lee committed
1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107
ByteShift       *       NibbleShift + 1
WordShift       *       ByteShift + 2

; Bit patterns for different types of memory.
NotPresent      *       &00000000
DRAM_Pattern    *       &11111111
VRAM_Pattern    *       &22222222
ROM_Pattern     *       &33333333
IO_Pattern      *       &44444444
NotAvailable    *       &88888888

        IMPORT  memset

HAL_PhysInfo
        TEQ     a1, #0
        MOVEQ   a1, #1:SHL:(32-ByteShift)
        MOVEQ   pc, lr

        Push    "a2,v1,v2,lr"
        MOV     v1, a1
        ADR     v2, HAL_PhysTable
10      LDMIA   v2, {a1, a2, lr}
        SUB     a3, lr, a1
        ADD     a1, v1, a1, LSR #ByteShift
        MOV     a3, a3, LSR #ByteShift
        BL      memset
        LDR     a1, [v2, #8]!
        TEQ     a1, #0
        BNE     %BT10
        MOV     a1, #&70000000 ; Physical RAM from &70000000 and up?
        LDR     lr, =&FFFFE000-1
        Pull    "a2"
        STR     lr, [a2]
        Pull    "v1,v2,pc"

; HAL_PhysInfo uses memset to fill the table, so all regions
; must be byte-aligned (ie double-page-aligned addresses).
HAL_PhysTable
        DCD     &00000000, NotPresent  :OR: NotAvailable ; GPMC
        DCD     &40000000, IO_Pattern  :OR: NotAvailable ; All I/O registers
        DCD     &70000000, NotPresent  :OR: NotAvailable ; SDRC-SMS/SDRAM
        DCD     &FFFFE000, NotPresent  :OR: NotAvailable ; SDRC-SMS/SDRAM
        DCD     0

1108
HAL_Reset
1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123
        ; TouchBook can power off by setting GPIO168 to 0
        ; TODO - Sort out the other machine types
        LDR     a3, [sb, #BoardConfig_MachID]
        LDR     a2, =MachID_TouchBook
        CMP     a3, a2
        CMPEQ   a1, #0
        BNE     %FT10
        MOV     a1, #168
        MOV     a2, #0
        BL      GPIOx_SetAsOutput
        ; It seems like there's a short delay before the system shuts down; if we try doing a soft reset during that time then we'll hang with the power still on
        ; So just loop here, with a warning message for if something's gone wrong
        DebugTX "TouchBook power off failed!"
        B       .
10
1124
        ; At the moment we only support resets, not power off
Jeffrey Lee's avatar
Jeffrey Lee committed
1125
        ; For a reset, we just poke PRM_RSTCTRL.RST_DPLL3
1126 1127
        LDR     a3, L4_PowerMan_Log
        ADD     a3, a3, #Global_Reg_PRM
Jeffrey Lee's avatar
Jeffrey Lee committed
1128
        MOV     a2, #4
1129 1130 1131
        STR     a2, [a3, #PRM_RSTCTRL]
        DebugTX "HAL_Reset failed!"
        B       . ; Just in case
1132

Jeffrey Lee's avatar
Jeffrey Lee committed
1133 1134 1135 1136 1137 1138 1139 1140 1141 1142
        LTORG

        EXPORT  vtophys
vtophys
        CallOS  OS_LogToPhys, tailcall

        EXPORT  mapinio
mapinio
        CallOS  OS_MapInIO, tailcall

1143 1144 1145 1146 1147
 [ FIQDebug
FIQRoutine
        ; Dump PC value to the serial port
        MOV     r8, #&24
        LDR     sb, [r8]
1148
        LDR     r8, [sb, #BoardConfig_DebugUART]
1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182
        ADR     r9, hextab
        MOV     r10, #8
        MOV     r11, lr ; Preserve return address
10
        LDRB    r12, [r8, #UART_LSR]
        TST     r12, #THRE
        BEQ     %BT10
        LDRB    r12, [r9, r11, LSR #28]
        STRB    r12, [r8, #UART_THR]
        MOV     r11, r11, LSL #4
        SUBS    r10, r10, #1
        BNE     %BT10
10
        LDRB    r12, [r8, #UART_LSR]
        TST     r12, #THRE
        BEQ     %BT10
        MOV     r12, #13
        STRB    r12, [r8, #UART_THR]
10
        LDRB    r12, [r8, #UART_LSR]
        TST     r12, #THRE
        BEQ     %BT10
        MOV     r12, #10
        STRB    r12, [r8, #UART_THR]
        ; Clear interrupt
        MOV     r8, #&24
        LDR     sb, [r8]
        LDR     r8, L4_GPIO1_Log
        LDR     r10, [r8, #GPIO_IRQSTATUS1]
        STR     r10, [r8, #GPIO_IRQSTATUS1]
        LDR     r8, MPU_INTC_Log
        MOV     r10, #2
        STR     r10, [r8, #INTCPS_CONTROL]
        ; Data synchronisation barrier to make sure INTC gets the message
1183
        myDSB
1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197
   [ {FALSE} ; Code to call DebugCallstack on any button press
        ; Switch back to original mode
        MRS     r8, CPSR
        MRS     r9, SPSR
        BIC     r8, r8, #&1F
        AND     r9, r9, #&1F
        ORR     r8, r8, r9
        MSR     CPSR_c, r8
        ; Dump the callstack & other regs
        Push    "sb" ; preserve original sb so it can be dumped
        MOV     sb, #&24
        LDR     sb, [sb]
        B       DebugCallstack
   ]
1198 1199 1200 1201 1202
        ; Now return
        SUBS    pc, lr, #4

hextab  DCB "0123456789abcdef"
 ]
Jeffrey Lee's avatar
Jeffrey Lee committed
1203
        END