diff options
Diffstat (limited to 'src/devices/pic/base/pic_protection.cpp')
| -rw-r--r-- | src/devices/pic/base/pic_protection.cpp | 361 |
1 files changed, 361 insertions, 0 deletions
diff --git a/src/devices/pic/base/pic_protection.cpp b/src/devices/pic/base/pic_protection.cpp new file mode 100644 index 0000000..da77881 --- /dev/null +++ b/src/devices/pic/base/pic_protection.cpp @@ -0,0 +1,361 @@ +/*************************************************************************** + * Copyright (C) 2005-2007 Nicolas Hadacek <hadacek@kde.org> * + * * + * 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 "pic_protection.h" + +#include "pic_config.h" + +#include <qregexp.h> + +bool Pic::Protection::isNoneProtectedValueName(const QString &name) const +{ + if ( name=="Off" ) return true; + if ( _data.architecture()==Architecture::P17C ) return !isAllProtectedValueName(name); + return false; +} + +bool Pic::Protection::isAllProtectedValueName(const QString &name) const +{ + if ( name=="All" ) return true; + if ( _data.architecture()==Architecture::P17C ) return ( name=="Code-protected microcontroller" ); + return false; +} + +Pic::Protection::Family Pic::Protection::family() const +{ + if ( _config.findMask("WRTBS") ) return CodeGuard; + QString mask = maskName(ProgramProtected, MemoryRangeType::Code); + if ( _config.findMask(QString("%1_%2").arg(mask).arg(0)) ) return BlockProtection; + if ( _config.findMask(mask) ) return BasicProtection; + return NoProtection; +} + +QString Pic::Protection::securityValueName(Type type) const +{ + if ( type==StandardSecurity ) return "Standard Security"; + if ( type==HighSecurity ) return "High Security"; + Q_ASSERT( type==Nb_Types ); + return "Off"; +} + +QString Pic::Protection::bootSizeMaskName() const +{ + return (family()==CodeGuard ? "BSSIZ" : "BBSIZ"); +} + +QString Pic::Protection::bootMaskName(Type type) const +{ + Q_ASSERT( type!=Nb_Types ); + if ( family()==CodeGuard ) { + if ( type==WriteProtected ) return "WRTBS"; + if ( type==StandardSecurity || type==HighSecurity ) return "BSSEC"; + } else { + if ( type==ProgramProtected ) return "CPB"; + if ( type==WriteProtected ) return "WRTB"; + if ( type==ReadProtected ) return "EBTRB"; + } + return QString::null; +} + +QString Pic::Protection::blockSizeMaskName(uint block) const +{ + if ( family()==CodeGuard ) { + Q_ASSERT( block==0 ); + return "SSSIZ"; + } + return blockMaskName(ProgramProtected, block); +} + +QString Pic::Protection::blockMaskName(Type type, uint block) const +{ + Q_ASSERT( type!=Nb_Types ); + if ( family()==CodeGuard ) { + if ( type==WriteProtected ) return (block==0 ? "WRTSS" : "WRTGS"); + if ( type==StandardSecurity || type==HighSecurity ) return (block==0 ? "SSSEC" : "GSSEC"); + return QString::null; + } + return QString("%1_%2").arg(maskName(type, MemoryRangeType::Code)).arg(block); +} + +QString Pic::Protection::maskName(Type type, MemoryRangeType mtype) const +{ + Q_ASSERT( type!=Nb_Types ); + switch (mtype.type()) { + case MemoryRangeType::Code: + if ( type==ProgramProtected ) { + if ( _data.architecture()==Architecture::P17C ) return "PM"; + if ( _data.architecture()==Architecture::P30F || _data.architecture()==Architecture::P24F ) return "GCP"; + return "CP"; + } + if ( type==WriteProtected ) { + if ( _data.architecture()==Architecture::P30F || _data.architecture()==Architecture::P24F ) return "GWRP"; + return "WRT"; + } + if ( type==ReadProtected ) return "EBTR"; + break; + case MemoryRangeType::Eeprom: + if ( type==ProgramProtected ) return "CPD"; + if ( type==WriteProtected ) return "WRTD"; + break; + case MemoryRangeType::Cal: + if ( type==ProgramProtected ) return "CPC"; + break; + case MemoryRangeType::Config: + if ( type==WriteProtected ) return "WRTC"; + if ( type==ReadProtected ) return "EBTRC"; + break; + case MemoryRangeType::Nb_Types: Q_ASSERT(false); break; + default: break; + } + return QString::null; +} + +bool Pic::Protection::extractRanges(const QString &name, QValueVector<Address> &starts, Address &end, bool &ok) +{ + ok = false; + QRegExp regexp("([A-F0-9]+)(/[A-F0-9]+)?(/[A-F0-9]+)?:([A-F0-9]+)"); + if ( !regexp.exactMatch(name) ) return false; + bool ok1; + end = fromHex(regexp.cap(regexp.numCaptures()), &ok1); + if ( !ok1 ) { + qDebug("Malformed end address"); + return true; + } + starts.clear(); + for (int i=1; i<regexp.numCaptures(); i++) { + if ( regexp.cap(i).isEmpty() ) break; + bool ok1; + QString s = (i==1 ? regexp.cap(i) : regexp.cap(i).mid(1)); + Address start = fromHex(s, &ok1); + if ( !ok1 ) { + qDebug("Malformed start address %s", s.latin1()); + return true; + } + if ( start>=end && (starts.count()==0 || starts[starts.count()-1]<start) ) { + qDebug("Start addresses should be ordered"); + return true; + } + starts.append(start); + } + ok = true; + return true; +} + +AddressRangeVector Pic::Protection::extractRanges(const QString &name, MemoryRangeType type) const +{ + if ( isNoneProtectedValueName(name) ) return AddressRange(); + if ( isAllProtectedValueName(name) ) { + const MemoryRangeData &rdata = _data.range(type); + return AddressRange(rdata.start, rdata.end); + } + bool ok1; + QValueVector<Address> starts; + Address end; + bool ok2 = extractRanges(name, starts, end, ok1); + Q_ASSERT(ok1); + Q_ASSERT(ok2); + Q_UNUSED(ok2); + AddressRangeVector rv; + for (uint i=0; i<uint(starts.count()); i++) rv.append(AddressRange(starts[i], end)); + return rv; +} + +bool Pic::Protection::checkRange(const QString &mask, const QString &name) const +{ + if ( family()!=CodeGuard ) { + bool ok; + (void)extractRange(mask, name, ok); + return ok; + } + + bool isBootBlock = false; + int block = 0; + Type ptype = Nb_Types; + for (uint i=0; i<3; i++) { + isBootBlock = ( i==0 ); + block = i - 1; + for (uint k=0; k<Nb_Types; k++) { + QString mname = (isBootBlock ? bootMaskName(Type(k)) : blockMaskName(Type(k), block)); + if ( mask!=mname ) continue; + ptype = Type(k); + break; + } + if ( ptype!=Nb_Types ) break; + } + if ( ptype==Nb_Types ) { + qDebug("Unknown protected memory range"); + return false; + } + // #### TODO + return true; +} + +Pic::Protection::ProtectedRange Pic::Protection::extractRange(const QString &mask, const QString &name, bool &ok) const +{ + Q_ASSERT( family()!=CodeGuard ); + //qDebug("extract range %s %s", mask.latin1(), name.latin1()); + ProtectedRange pr; + ok = false; + + QRegExp rexp("([A-Z]+)(?:_([0-9])|)"); + if ( !rexp.exactMatch(mask) ) { + qDebug("Malformed block range"); + return pr; + } + + bool isBootBlock = false; + MemoryRangeType rtype = MemoryRangeType::Nb_Types; + Type ptype = Nb_Types; + + for (MemoryRangeType type; type<=MemoryRangeType::Nb_Types; ++type) { // #### danger: <= + isBootBlock = ( type==MemoryRangeType::Nb_Types ); + for (uint k=0; k<Nb_Types; k++) { + QString mname = (isBootBlock ? bootMaskName(Type(k)) : maskName(Type(k), type)); + if ( rexp.cap(1)!=mname ) continue; + rtype = (isBootBlock ? MemoryRangeType(MemoryRangeType::Code) : type); + ptype = Type(k); + if ( !rexp.cap(2).isEmpty() ) { + if ( isBootBlock || (rtype!=MemoryRangeType::Code && rtype!=MemoryRangeType::Eeprom) ) { + qDebug("Multiple blocks only for code and eeprom"); + return pr; + } + } + break; + } + if ( rtype!=MemoryRangeType::Nb_Types ) break; + } + if ( rtype==MemoryRangeType::Nb_Types ) { + qDebug("Unknown protected memory range"); + return pr; + } + + if ( isNoneProtectedValueName(name) ) { + ok = true; + return pr; + } + + const Config::Mask *bmask = _config.findMask(bootMaskName(ptype)); + const Config::Mask *bsmask = _config.findMask(bootSizeMaskName()); + const MemoryRangeData &rdata = _data.range(rtype); + if ( isAllProtectedValueName(name) ) { + if ( rtype==MemoryRangeType::Code && !isBootBlock && bmask ) { + qDebug("Protected range should be explicit with boot block"); + return pr; + } + if (isBootBlock) { + if ( bsmask==0 ) { + qDebug("Protected range should be explicit when boot size not present"); + return pr; + } + Address start = _data.range(MemoryRangeType::Code).start; + pr.starts.append(start); + for (uint k=0; k<uint(bsmask->values.count()); k++) { + bool ok1; + uint size = bsmask->values[k].name.toUInt(&ok1); + if ( !ok1 ) { + qDebug("Could not recognize boot size value"); + return pr; + } + if ( size==0 ) { + qDebug("Boot size cannot be zero"); + return pr; + } + Address end = 2 * size - 1; // instruction words + if ( pr.ends.count()!=0 && end==pr.ends[pr.ends.count()-1] ) continue; + pr.ends.append(end); + qHeapSort(pr.ends); + } + } else { + pr.starts.append(rdata.start); + pr.ends.append(rdata.end); + } + ok = true; + return pr; + } + if ( isBootBlock && bsmask ) { + qDebug("Protected range should not be explicit when boot size is present"); + return pr; + } + + // extract start and end + Address end; + bool ok1; + if ( !extractRanges(name, pr.starts, end, ok1) ) { + qDebug("Could not recognized explicit range"); + return pr; + } + if ( !ok1 ) return pr; + if ( end>rdata.end ) { + qDebug("End is beyond memory range"); + return pr; + } + if ( (rtype!=MemoryRangeType::Code || isBootBlock) && (pr.starts.count()>1 || !rexp.cap(2).isEmpty() || bmask==0) ) { + qDebug("Only code with blocks and boot can have multiple protected ranges"); + return pr; + } + if ( isBootBlock && pr.starts[0]!=0 ) { + qDebug("Boot block start should be zero"); + return pr; + } + pr.ends.append(end); + + // check with boot block + if ( pr.starts.count()>1 ) { + if ( bmask==0 ) { + qDebug("No boot mask"); + return pr; + } + for (uint i=0; i<uint(bmask->values.count()); i++) { + if ( bmask->values[i].name=="Off" ) continue; + bool ok1; + ProtectedRange bpr = extractRange(bmask->name, bmask->values[i].name, ok1); + if ( !ok1 ) return pr; + if ( bpr.ends.count()!=pr.starts.count() ) { + qDebug("Boot number of ends (%i) should be the same as code number of starts (%i)", int(bpr.ends.count()), int(pr.starts.count())); + return pr; + } + for (uint k=0; k<uint(bpr.ends.count()); k++) { + if ( bpr.ends[k]+1!=pr.starts[k] ) { + qDebug("%i: End of boot block (%s) doesn't match start of code block (%s)", k, toHexLabelAbs(bpr.ends[k]).latin1(), toHexLabelAbs(pr.starts[k]).latin1()); + return pr; + } + } + } + } + + ok = true; + return pr; +} + +bool Pic::Protection::hasBootBlock() const +{ + return ( _config.findMask("CPB") || _config.findMask(bootSizeMaskName()) ); +} + +uint Pic::Protection::nbBlocks() const +{ + if ( family()==CodeGuard ) return 2; // codeguard : secure segment + general segment + for (uint i=0; i<MAX_NB_BLOCKS; i++) + if ( _config.findMask(QString("CP_%1").arg(i))==0 ) return i; + return MAX_NB_BLOCKS; +} + +QString Pic::Protection::bootLabel() const +{ + if ( family()==CodeGuard ) return i18n("Boot Segment"); + return i18n("Boot Block"); +} + +QString Pic::Protection::blockLabel(uint i) const +{ + if ( family()==CodeGuard ) { + if ( i==0 ) return i18n("Secure Segment"); + return i18n("General Segment"); + } + return i18n("Block #%1").arg(i); +} |