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Diffstat (limited to 'SrcShared/Hardware/EmRegsEZVisor.cpp')
| -rw-r--r-- | SrcShared/Hardware/EmRegsEZVisor.cpp | 243 |
1 files changed, 243 insertions, 0 deletions
diff --git a/SrcShared/Hardware/EmRegsEZVisor.cpp b/SrcShared/Hardware/EmRegsEZVisor.cpp new file mode 100644 index 0000000..166158c --- /dev/null +++ b/SrcShared/Hardware/EmRegsEZVisor.cpp @@ -0,0 +1,243 @@ +/* -*- mode: C++; tab-width: 4 -*- */ +/* ===================================================================== *\ + Copyright (c) 2000-2001 Palm, Inc. or its subsidiaries. + All rights reserved. + + This file is part of the Palm OS Emulator. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. +\* ===================================================================== */ + +#include "EmCommon.h" +#include "EmRegsEZVisor.h" +#include "EmRegsEZPrv.h" + +#include "EmDevice.h" // HardwareID +#include "EmSession.h" // GetDevice +#include "EmSPISlaveADS784x.h" // EmSPISlaveADS784x + + +const uint16 kVisorButtonMap[kNumButtonRows][kNumButtonCols] = +{ + { keyBitHard1, keyBitHard2, keyBitHard3 }, + { keyBitPageUp, keyBitPageDown, 0 }, + { keyBitPower, keyBitHard4, 0 } +}; + + +// --------------------------------------------------------------------------- +// ¥ EmRegsEZVisor::EmRegsEZVisor +// --------------------------------------------------------------------------- + +EmRegsEZVisor::EmRegsEZVisor (void) : + EmRegsEZ (), + fSPISlaveADC (new EmSPISlaveADS784x (kChannelSet2)) +{ +} + + +// --------------------------------------------------------------------------- +// ¥ EmRegsEZVisor::~EmRegsEZVisor +// --------------------------------------------------------------------------- + +EmRegsEZVisor::~EmRegsEZVisor (void) +{ + delete fSPISlaveADC; +} + + +// --------------------------------------------------------------------------- +// ¥ EmRegsEZVisor::GetLCDScreenOn +// --------------------------------------------------------------------------- + +Bool EmRegsEZVisor::GetLCDScreenOn (void) +{ + return (READ_REGISTER (portCData) & hwrLegoPortCLCDEnableOn) != 0; +} + + +// --------------------------------------------------------------------------- +// ¥ EmRegsEZVisor::GetLCDBacklightOn +// --------------------------------------------------------------------------- + +Bool EmRegsEZVisor::GetLCDBacklightOn (void) +{ + return (READ_REGISTER (portGData) & hwrLegoPortGBacklightOff) == 0; +} + + +// --------------------------------------------------------------------------- +// ¥ EmRegsEZVisor::GetLineDriverState +// --------------------------------------------------------------------------- +// Return whether or not the line drivers for the given object are open or +// closed. + +Bool EmRegsEZVisor::GetLineDriverState (EmUARTDeviceType type) +{ + if (type == kUARTSerial) + { + uint16 uControl = READ_REGISTER (uControl); + uint16 uMisc = READ_REGISTER (uMisc); + + return (uControl & hwrEZ328UControlUARTEnable) != 0 && + (uMisc & hwrEZ328UMiscIRDAEn) == 0; + } + + if (type == kUARTIR) + { + uint16 uControl = READ_REGISTER (uControl); + uint16 uMisc = READ_REGISTER (uMisc); + + return (uControl & hwrEZ328UControlUARTEnable) != 0 && + (uMisc & hwrEZ328UMiscIRDAEn) != 0; + } + + return false; +} + + +// --------------------------------------------------------------------------- +// ¥ EmRegsEZVisor::GetPortInputValue +// --------------------------------------------------------------------------- +// Return the GPIO values for the pins on the port. These values are used +// if the select pins are high. + +uint8 EmRegsEZVisor::GetPortInputValue (int port) +{ + uint8 result = EmRegsEZ::GetPortInputValue (port); + + if (port == 'E') + { + /* + Support the Visor model ID. From Bob Petersen at Handspring: + + The Visor ROM only works with 1 device so far. But, the Visor does have + model detect pins so that future ROMs can work on multiple platforms. The + model input pins are connected to port E, bits 0-2 (E[0-2]). To read them, + you have to drive port G bit 2 low and enable the pullups on port E. + */ + +#define modelOutPin 0x04 // EMUIRQ (IRQ7) +#define modelInPins 0x07 // SPI pins on Visor + + UInt8 portGData = READ_REGISTER (portGData); + UInt8 portGDir = READ_REGISTER (portGDir); + UInt8 portGSelect = READ_REGISTER (portGSelect); + + if (((portGData & modelOutPin) == 0) && + ((portGDir & modelOutPin) == modelOutPin) && + ((portGSelect & modelOutPin) == modelOutPin)) + { + EmAssert (gSession); + + EmDevice device = gSession->GetDevice (); + result |= (~device.HardwareID ()) & modelInPins; // <chg 24-Apr-2000 BP> expects inverse output + } + else + { + // The pin for detecting "in cradle" is hwrLegoPortEDock2Off. It should be low + // if in the serial cradle. If it is high, we assume USB. + // -- Bob Petersen + + result &= ~hwrLegoPortEDock2Off; + } + } + else if (port == 'G') + { + // Make sure that hwrLegoPortGPowerFailIrqOff is set. If it's clear, + // the battery code will make the device go to sleep immediately. + + result |= hwrLegoPortGPowerFailIrqOff; + } + + return result; +} + + +// --------------------------------------------------------------------------- +// ¥ EmRegsEZVisor::GetPortInternalValue +// --------------------------------------------------------------------------- +// Return the dedicated values for the pins on the port. These values are +// used if the select pins are low. + +uint8 EmRegsEZVisor::GetPortInternalValue (int port) +{ + uint8 result = EmRegsEZ::GetPortInternalValue (port); + + if (port == 'D') + { + // Always set the high bit, indicating that there's no memory module + // installed. From Bob Petersen at Handspring: + // + // This is a probe into the module memory, to check for a replacement ROM on a + // card that is plugged in. The card is mapped to 0x20000000 and the card's + // ROM is at 0x28000000. If it finds the card header (FEEDBEEF) and the card + // is plugged in that has a non-zero reset vector, the chip selects are changed + // so B0 addresses 10c00000, and then we jump to the reset vector and boot off + // the card. + // + // This part of the boot code should only be called if it is detected that a + // card is currently plugged in (bit 7 of port D) and we aren't currently + // booting from the card. + + result |= hwrLegoPortDCardInstIrqOff; + + // Ensure that bit hwrLegoPortDDock1IrqOff is set. If it's clear, HotSync + // will sync via the modem instead of the serial port. + + result |= hwrLegoPortDDock1IrqOff; + } + else if (port == 'G') + { + // Make sure that hwrLegoPortGPowerFailIrqOff is set. If it's clear, + // the battery code will make the device go to sleep immediately. + + result |= hwrLegoPortGPowerFailIrqOff; + } + + return result; +} + + +// --------------------------------------------------------------------------- +// ¥ EmRegsEZVisor::GetKeyInfo +// --------------------------------------------------------------------------- + +void EmRegsEZVisor::GetKeyInfo (int* numRows, int* numCols, + uint16* keyMap, Bool* rows) +{ + *numRows = kNumButtonRows; + *numCols = kNumButtonCols; + + memcpy (keyMap, kVisorButtonMap, sizeof (kVisorButtonMap)); + + // Determine what row is being asked for. + + UInt8 portDDir = READ_REGISTER (portDDir); + UInt8 portDData = READ_REGISTER (portDData); + + UInt8 portGDir = READ_REGISTER (portGDir); + UInt8 portGData = READ_REGISTER (portGData); + + rows[0] = (portGDir & hwrLegoPortGKbdRow0) != 0 && (portGData & hwrLegoPortGKbdRow0) == 0; + rows[1] = (portGDir & hwrLegoPortGKbdRow1) != 0 && (portGData & hwrLegoPortGKbdRow1) == 0; + rows[2] = (portDDir & hwrLegoPortDKbdRow2) != 0 && (portDData & hwrLegoPortDKbdRow2) == 0; +} + + +// --------------------------------------------------------------------------- +// ¥ EmRegsEZVisor::GetSPISlave +// --------------------------------------------------------------------------- + +EmSPISlave* EmRegsEZVisor::GetSPISlave (void) +{ + if ((READ_REGISTER (portGData) & hwrLegoPortGAdcCsOff) == 0) + { + return fSPISlaveADC; + } + + return NULL; +} |