regtools: add graphical register explorer + analyser

This tool allows one to explore any register map. Register dumps
(like produced by hwstub tools) can be loaded and decoded by the
tool. Finally some analysers are provided for specific soc analysis
like clock tree and emi on imx233 for example.

Change-Id: Iaf81bd52d15f3e44ab4fe9bc039153fcf60cf92a

utils/regtools/qeditor/backend.cpp

@@ -0,0 +1,156 @@
+#include <QFile>
+#include <QTextStream>
+#include <QDebug>
+#include "backend.h"
+
+Backend::Backend()
+{
+}
+
+QStringList Backend::GetSocNameList()
+{
+    QStringList sl;
+    for(size_t i = 0; i < m_socs.size(); i++)
+        sl.append(QString(m_socs[i].name.c_str()));
+    return sl;
+}
+
+bool Backend::GetSocByName(const QString& name, soc_t& s)
+{
+    for(size_t i = 0; i < m_socs.size(); i++)
+        if(m_socs[i].name == name.toStdString())
+        {
+            s = m_socs[i];
+            return true;
+        }
+    return false;
+}
+
+bool Backend::LoadSocDesc(const QString& filename)
+{
+    bool ret = soc_desc_parse_xml(filename.toStdString(), m_socs);
+    emit OnSocListChanged();
+    return ret;
+}
+
+IoBackend *Backend::CreateFileIoBackend(const QString& filename)
+{
+    return new FileIoBackend(filename);
+}
+
+IoBackend *Backend::CreateDummyIoBackend()
+{
+    return new DummyIoBackend();
+}
+
+IoBackend::IoBackend()
+{
+}
+
+FileIoBackend::FileIoBackend(const QString& filename)
+{
+    m_filename = filename;
+    Reload();
+}
+
+QString FileIoBackend::GetSocName()
+{
+    return m_soc;
+}
+
+bool FileIoBackend::ReadRegister(const QString& name, soc_word_t& value)
+{
+    if(m_map.find(name) == m_map.end())
+        return false;
+    value = m_map[name];
+    return true;
+}
+
+bool FileIoBackend::Reload()
+{
+    QFile file(m_filename);
+    if(!file.open(QIODevice::ReadOnly | QIODevice::Text))
+        return false;
+    m_map.clear();
+
+    QTextStream in(&file);
+    while(!in.atEnd())
+    {
+        QString line = in.readLine();
+        int idx = line.indexOf('=');
+        if(idx == -1)
+            continue;
+        QString key = line.left(idx).trimmed();
+        bool ok;
+        soc_word_t val = line.mid(idx + 1).trimmed().toULong(&ok, 0);
+        if(key == "HW")
+            m_soc = line.mid(idx + 1).trimmed();
+        else if(ok)
+            m_map[key] = val;
+    }
+    return true;
+}
+
+DummyIoBackend::DummyIoBackend()
+{
+}
+
+QString DummyIoBackend::GetSocName()
+{
+    return "";
+}
+
+bool DummyIoBackend::ReadRegister(const QString& name, soc_word_t& value)
+{
+    (void) name;
+    (void) value;
+    return false;
+}
+
+bool DummyIoBackend::Reload()
+{
+    return true;
+}
+
+BackendHelper::BackendHelper(IoBackend *io_backend, const soc_t& soc)
+    :m_io_backend(io_backend), m_soc(soc)
+{
+}
+
+bool BackendHelper::ReadRegister(const QString& dev, const QString& reg, soc_word_t& v)
+{
+    return m_io_backend->ReadRegister("HW." + dev + "." + reg, v);
+}
+
+bool BackendHelper::ReadRegisterField(const QString& dev, const QString& reg,
+    const QString& field, soc_word_t& v)
+{
+    soc_dev_t *sdev = 0;
+    for(size_t i = 0; i < m_soc.dev.size(); i++)
+    {
+        for(size_t j = 0; j < m_soc.dev[i].addr.size(); j++)
+            if(m_soc.dev[i].addr[j].name.c_str() == dev)
+                sdev = &m_soc.dev[i];
+    }
+    if(sdev == 0)
+        return false;
+    soc_reg_t *sreg = 0;
+    for(size_t i = 0; i < sdev->reg.size(); i++)
+    {
+        for(size_t j = 0; j < sdev->reg[i].addr.size(); j++)
+            if(sdev->reg[i].addr[j].name.c_str() == reg)
+                sreg = &sdev->reg[i];
+    }
+    if(sreg == 0)
+        return false;
+    soc_reg_field_t *sfield = 0;
+    for(size_t i = 0; i < sreg->field.size(); i++)
+        if(sreg->field[i].name.c_str() == field)
+            sfield = &sreg->field[i];
+    if(sfield == 0)
+        return false;
+    if(!ReadRegister(dev, reg, v))
+        return false;
+    v = (v & sfield->bitmask()) >> sfield->first_bit;
+    return true;
+}