parent
c0f1d99d7a
commit
f1fc94cfbd
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@ -3,3 +3,6 @@ ROM dataspace to the LOG. It responds to configuration and ROM-module updates.
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The name of the ROM module must be specified via the 'rom' attribute of the
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The name of the ROM module must be specified via the 'rom' attribute of the
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components '<config>' node. For example: '<config rom="pointer"/>'.
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components '<config>' node. For example: '<config rom="pointer"/>'.
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The output format may be also be specified via a 'format' attribute. The options are
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'text'and 'hexdump', with the former as a default.
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@ -12,12 +12,10 @@
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*/
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*/
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/* Genode includes */
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/* Genode includes */
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#include <rom_session/connection.h>
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#include <base/signal.h>
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#include <base/signal.h>
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#include <os/config.h>
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#include <base/attached_rom_dataspace.h>
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#include <os/attached_rom_dataspace.h>
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#include <util/print_lines.h>
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#include <util/print_lines.h>
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#include <os/server.h>
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#include <base/component.h>
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#include <util/volatile_object.h>
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#include <util/volatile_object.h>
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namespace Rom_logger { struct Main; }
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namespace Rom_logger { struct Main; }
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@ -25,7 +23,9 @@ namespace Rom_logger { struct Main; }
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struct Rom_logger::Main
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struct Rom_logger::Main
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{
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{
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Server::Entrypoint &_ep;
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Genode::Env &_env;
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Genode::Attached_rom_dataspace _config_rom { _env, "config" };
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Genode::Lazy_volatile_object<Genode::Attached_rom_dataspace> _rom_ds;
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Genode::Lazy_volatile_object<Genode::Attached_rom_dataspace> _rom_ds;
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@ -42,72 +42,84 @@ struct Rom_logger::Main
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* Signal handler that is invoked when the configuration or the ROM module
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* Signal handler that is invoked when the configuration or the ROM module
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* changes.
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* changes.
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*/
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*/
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void _handle_update(unsigned);
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void _handle_update();
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Genode::Signal_rpc_member<Main> _update_dispatcher =
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Genode::Signal_handler<Main> _update_handler {
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{ _ep, *this, &Main::_handle_update };
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_env.ep(), *this, &Main::_handle_update };
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Main(Server::Entrypoint &ep) : _ep(ep)
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Main(Genode::Env &env) : _env(env)
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{
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{
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Genode::config()->sigh(_update_dispatcher);
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_config_rom.sigh(_update_handler);
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_handle_update(0);
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_handle_update();
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}
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}
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};
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};
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void Rom_logger::Main::_handle_update(unsigned)
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template <typename T>
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{
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inline Genode::Hex mkhex(T value) {
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using Genode::config;
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return Genode::Hex(value, Genode::Hex::OMIT_PREFIX, Genode::Hex::PAD); }
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config()->reload();
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void Rom_logger::Main::_handle_update()
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{
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_config_rom.update();
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/*
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/*
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* Query name of ROM module from config
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* Query name of ROM module from config
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*/
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*/
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Rom_name rom_name;
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Rom_name rom_name;
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try {
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try {
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rom_name = config()->xml_node().attribute_value("rom", rom_name);
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_config_rom.xml().attribute("rom").value(&rom_name);
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} catch (...) {
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} catch (...) {
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Genode::warning("could not determine ROM name from config");
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Genode::warning("could not determine ROM name from config");
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return;
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return;
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}
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}
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typedef Genode::String<8> Format_string;
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Format_string format =
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_config_rom.xml().attribute_value("format", Format_string("text"));
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/*
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/*
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* If ROM name changed, reconstruct '_rom_ds'
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* If ROM name changed, reconstruct '_rom_ds'
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*/
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*/
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if (rom_name != _rom_name) {
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if (rom_name != _rom_name) {
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_rom_ds.construct(rom_name.string());
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_rom_ds.construct(rom_name.string());
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_rom_ds->sigh(_update_dispatcher);
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_rom_ds->sigh(_update_handler);
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_rom_name = rom_name;
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_rom_name = rom_name;
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}
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}
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if (!_rom_ds.constructed())
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return;
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/*
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/*
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* Update ROM module and print content to LOG
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* Update ROM module and print content to LOG
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*/
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*/
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if (_rom_ds.constructed()) {
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_rom_ds->update();
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_rom_ds->update();
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if (_rom_ds->valid()) {
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if (!_rom_ds->valid()) {
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log("ROM '", _rom_name, "':");
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Genode::log("ROM '", _rom_name, "' is invalid");
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return;
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}
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Genode::print_lines<200>(_rom_ds->local_addr<char>(), _rom_ds->size(),
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log("ROM '", _rom_name, "':");
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[&] (char const *line) { Genode::log(" ", line); });
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} else {
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if (format == "text") {
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Genode::log("ROM '", _rom_name, "' is invalid");
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Genode::print_lines<200>(_rom_ds->local_addr<char>(), _rom_ds->size(),
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}
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[&] (char const *line) { Genode::log(" ", line); });
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} else if (format == "hexdump") {
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short const *data = _rom_ds->local_addr<short const>();
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/* dataspaces are always page aligned, therefore multiples of 2*8 bytes */
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Genode::uint32_t const data_len = _rom_ds->size() / sizeof(short);
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for (Genode::uint32_t i = 0; i < data_len; i += 8)
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log(mkhex(i)," ",mkhex(data[i+0])," ",mkhex(data[i+1]),
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" ",mkhex(data[i+2])," ",mkhex(data[i+3]),
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" ",mkhex(data[i+4])," ",mkhex(data[i+5]),
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" ",mkhex(data[i+6])," ",mkhex(data[i+7]));
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} else {
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error("unknown format specified by '", _config_rom.xml(),"'");
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}
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}
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}
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}
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namespace Server {
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Genode::size_t Component::stack_size() { return 4*1024*sizeof(long); }
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void Component::construct(Genode::Env &env) { static Rom_logger::Main main(env); }
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char const *name() { return "ep"; }
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size_t stack_size() { return 4*1024*sizeof(long); }
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void construct(Entrypoint &ep)
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{
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static Rom_logger::Main main(ep);
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}
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}
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@ -1,3 +1,3 @@
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TARGET = rom_logger
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TARGET = rom_logger
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SRC_CC = main.cc
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SRC_CC = main.cc
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LIBS = base config server
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LIBS = base
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