[linux] Add initial implementation of rom-loader

6 files changed, 465 insertions, 0 deletions

diff --git a/sw-linux/rom-loader/CMakeLists.txt b/sw-linux/rom-loader/CMakeLists.txt
new file mode 100644
index 0000000..6e1ad02
--- /dev/null
+++ b/sw-linux/rom-loader/CMakeLists.txt
@@ -0,0 +1,5 @@
+cmake_minimum_required(VERSION 3.7)
+
+project(rom-loader LANGUAGES CXX)
+
+add_executable(rom-loader main.cpp serial.cpp)
diff --git a/sw-linux/rom-loader/Makefile b/sw-linux/rom-loader/Makefile
new file mode 100644
index 0000000..c07b827
--- /dev/null
+++ b/sw-linux/rom-loader/Makefile
@@ -0,0 +1,208 @@
+# CMAKE generated file: DO NOT EDIT!
+# Generated by "Unix Makefiles" Generator, CMake Version 3.7
+
+# Default target executed when no arguments are given to make.
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+
+.PHONY : default_target
+
+# Allow only one "make -f Makefile2" at a time, but pass parallelism.
+.NOTPARALLEL:
+
+
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+
+# Disable implicit rules so canonical targets will work.
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+.SUFFIXES: .hpux_make_needs_suffix_list
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+# Suppress display of executed commands.
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+# A target that is always out of date.
+cmake_force:
+
+.PHONY : cmake_force
+
+#=============================================================================
+# Set environment variables for the build.
+
+# The shell in which to execute make rules.
+SHELL = /bin/sh
+
+# The CMake executable.
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+# The command to remove a file.
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+# Escaping for special characters.
+EQUALS = =
+
+# The top-level source directory on which CMake was run.
+CMAKE_SOURCE_DIR = /home/naopross/docs/projects/z80uPC/sw-linux/rom-loader
+
+# The top-level build directory on which CMake was run.
+CMAKE_BINARY_DIR = /home/naopross/docs/projects/z80uPC/sw-linux/rom-loader
+
+#=============================================================================
+# Targets provided globally by CMake.
+
+# Special rule for the target rebuild_cache
+rebuild_cache:
+	@$(CMAKE_COMMAND) -E cmake_echo_color --switch=$(COLOR) --cyan "Running CMake to regenerate build system..."
+	/usr/bin/cmake -H$(CMAKE_SOURCE_DIR) -B$(CMAKE_BINARY_DIR)
+.PHONY : rebuild_cache
+
+# Special rule for the target rebuild_cache
+rebuild_cache/fast: rebuild_cache
+
+.PHONY : rebuild_cache/fast
+
+# Special rule for the target edit_cache
+edit_cache:
+	@$(CMAKE_COMMAND) -E cmake_echo_color --switch=$(COLOR) --cyan "Running CMake cache editor..."
+	/usr/bin/ccmake -H$(CMAKE_SOURCE_DIR) -B$(CMAKE_BINARY_DIR)
+.PHONY : edit_cache
+
+# Special rule for the target edit_cache
+edit_cache/fast: edit_cache
+
+.PHONY : edit_cache/fast
+
+# The main all target
+all: cmake_check_build_system
+	$(CMAKE_COMMAND) -E cmake_progress_start /home/naopross/docs/projects/z80uPC/sw-linux/rom-loader/CMakeFiles /home/naopross/docs/projects/z80uPC/sw-linux/rom-loader/CMakeFiles/progress.marks
+	$(MAKE) -f CMakeFiles/Makefile2 all
+	$(CMAKE_COMMAND) -E cmake_progress_start /home/naopross/docs/projects/z80uPC/sw-linux/rom-loader/CMakeFiles 0
+.PHONY : all
+
+# The main clean target
+clean:
+	$(MAKE) -f CMakeFiles/Makefile2 clean
+.PHONY : clean
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+# The main clean target
+clean/fast: clean
+
+.PHONY : clean/fast
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+# Prepare targets for installation.
+preinstall: all
+	$(MAKE) -f CMakeFiles/Makefile2 preinstall
+.PHONY : preinstall
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+# Prepare targets for installation.
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+	$(MAKE) -f CMakeFiles/Makefile2 preinstall
+.PHONY : preinstall/fast
+
+# clear depends
+depend:
+	$(CMAKE_COMMAND) -H$(CMAKE_SOURCE_DIR) -B$(CMAKE_BINARY_DIR) --check-build-system CMakeFiles/Makefile.cmake 1
+.PHONY : depend
+
+#=============================================================================
+# Target rules for targets named rom-loader
+
+# Build rule for target.
+rom-loader: cmake_check_build_system
+	$(MAKE) -f CMakeFiles/Makefile2 rom-loader
+.PHONY : rom-loader
+
+# fast build rule for target.
+rom-loader/fast:
+	$(MAKE) -f CMakeFiles/rom-loader.dir/build.make CMakeFiles/rom-loader.dir/build
+.PHONY : rom-loader/fast
+
+main.o: main.cpp.o
+
+.PHONY : main.o
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+# target to build an object file
+main.cpp.o:
+	$(MAKE) -f CMakeFiles/rom-loader.dir/build.make CMakeFiles/rom-loader.dir/main.cpp.o
+.PHONY : main.cpp.o
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+main.i: main.cpp.i
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+# target to preprocess a source file
+main.cpp.i:
+	$(MAKE) -f CMakeFiles/rom-loader.dir/build.make CMakeFiles/rom-loader.dir/main.cpp.i
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+main.s: main.cpp.s
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+# target to generate assembly for a file
+main.cpp.s:
+	$(MAKE) -f CMakeFiles/rom-loader.dir/build.make CMakeFiles/rom-loader.dir/main.cpp.s
+.PHONY : main.cpp.s
+
+serial.o: serial.cpp.o
+
+.PHONY : serial.o
+
+# target to build an object file
+serial.cpp.o:
+	$(MAKE) -f CMakeFiles/rom-loader.dir/build.make CMakeFiles/rom-loader.dir/serial.cpp.o
+.PHONY : serial.cpp.o
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+serial.i: serial.cpp.i
+
+.PHONY : serial.i
+
+# target to preprocess a source file
+serial.cpp.i:
+	$(MAKE) -f CMakeFiles/rom-loader.dir/build.make CMakeFiles/rom-loader.dir/serial.cpp.i
+.PHONY : serial.cpp.i
+
+serial.s: serial.cpp.s
+
+.PHONY : serial.s
+
+# target to generate assembly for a file
+serial.cpp.s:
+	$(MAKE) -f CMakeFiles/rom-loader.dir/build.make CMakeFiles/rom-loader.dir/serial.cpp.s
+.PHONY : serial.cpp.s
+
+# Help Target
+help:
+	@echo "The following are some of the valid targets for this Makefile:"
+	@echo "... all (the default if no target is provided)"
+	@echo "... clean"
+	@echo "... depend"
+	@echo "... rebuild_cache"
+	@echo "... edit_cache"
+	@echo "... rom-loader"
+	@echo "... main.o"
+	@echo "... main.i"
+	@echo "... main.s"
+	@echo "... serial.o"
+	@echo "... serial.i"
+	@echo "... serial.s"
+.PHONY : help
+
+
+
+#=============================================================================
+# Special targets to cleanup operation of make.
+
+# Special rule to run CMake to check the build system integrity.
+# No rule that depends on this can have commands that come from listfiles
+# because they might be regenerated.
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+	$(CMAKE_COMMAND) -H$(CMAKE_SOURCE_DIR) -B$(CMAKE_BINARY_DIR) --check-build-system CMakeFiles/Makefile.cmake 0
+.PHONY : cmake_check_build_system
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diff --git a/sw-linux/rom-loader/main.cpp b/sw-linux/rom-loader/main.cpp
new file mode 100644
index 0000000..3c845ba
--- /dev/null
+++ b/sw-linux/rom-loader/main.cpp
@@ -0,0 +1,139 @@
+#include <iostream>
+#include <string>
+#include <vector>
+
+#include <cstdio>
+#include <cstdlib>
+
+#include "serial.hpp"
+
+struct args_t
+{
+    std::string file_name;
+    bool file_name_set;
+    std::string port_name;
+    bool port_name_set;
+    long baudrate;
+    bool baudrate_set;
+};
+
+void usage(void)
+{
+    std::cout << "rom-loader -p [PORT] -f [FILE]" << std::endl
+              << std::endl
+              << "Nao Pross <naopross@thearcway.org>" << std::endl;
+}
+
+bool parse_arguments(const int argc, const char * const argv[], args_t& args)
+{
+    if (argc < 2) {
+        usage();
+        return false;
+    }
+
+    args.file_name_set = false;
+    args.port_name_set = false;
+    args.baudrate_set = false;
+
+    for (int i = 1; i < argc; i++) {
+        const std::string arg(argv[i]);
+
+        bool next = false;
+        std::string next_arg = "";
+
+        // check that is an option
+        if (arg.front() != '-') {
+            usage();
+            return false;
+        }
+
+        // help option
+        if (arg[1] == 'h') {
+            usage();
+            return false;
+        }
+
+        // check that threre is an argument
+        if (i+1 < argc) {
+            next_arg = std::string(argv[i+1]);
+            i++;
+        } else {
+            std::cerr << "Missing option argument" << std::endl;
+            return false;
+        }
+
+        switch (arg[1]) {
+        case 'p':
+            args.port_name = next_arg;
+            args.port_name_set = true;
+            break;
+
+        case 'f':
+            args.file_name = next_arg;
+            args.file_name_set = true;
+            break;
+
+        case 'b':
+            args.baudrate = std::stol(next_arg);
+            args.baudrate_set = true;
+            break;
+
+        default:
+            std::cerr << "Invalid option " << arg << std::endl;
+            return false;
+        }
+    }
+
+    if (!args.file_name_set || !args.port_name_set) {
+        std::cerr << "Missing required options: ";
+        
+        if (!args.file_name_set)
+            std::cerr << "-f [FILE] ";
+
+        if (!args.port_name_set)
+            std::cerr << "-p [PORT] ";
+
+        std::cerr << std::endl;
+
+        return false;
+    }
+
+    return true;
+}
+
+int main(int argc, char *argv[])
+{
+    args_t args;
+
+    if (!parse_arguments(argc, argv, args)) {
+        return -1;
+    }
+
+    FILE *fileptr = std::fopen(args.file_name.c_str(), "rb");
+
+    if (!fileptr) {
+        std::cerr << "Failed to open file " << args.file_name << std::endl;
+        return -2;
+    }
+
+    serial s_dev(args.port_name, B9600);
+
+    int chr;
+    while ((chr = std::fgetc(fileptr)) != EOF) {
+        const char byte = static_cast<char>(chr);
+
+        // std::cout << std::hex << byte << std::endl;
+        s_dev.write(&byte, 1);
+    }
+
+    if (std::ferror(fileptr))
+        std::cerr << "I/O error when reading file " 
+                  << args.file_name << std::endl;
+
+    if (!std::feof(fileptr))
+        std::cerr << "The reading ended before reaching EOF" << std::endl;
+
+    std::fclose(fileptr);
+
+    return 0;
+}
diff --git a/sw-linux/rom-loader/rom-loader b/sw-linux/rom-loader/rom-loader
new file mode 100755
index 0000000..6652ef5
--- /dev/null
+++ b/sw-linux/rom-loader/rom-loader
diff --git a/sw-linux/rom-loader/serial.cpp b/sw-linux/rom-loader/serial.cpp
new file mode 100644
index 0000000..7d25f02
--- /dev/null
+++ b/sw-linux/rom-loader/serial.cpp
@@ -0,0 +1,89 @@
+#include "serial.hpp"
+
+#include <ios>
+
+extern "C" {
+#include <fcntl.h>
+#include <termios.h>
+#include <unistd.h>
+}
+
+serial::serial(const std::string& port, speed_t baud)
+{
+    m_fd = open(port.c_str(), O_RDWR | O_NOCTTY | O_NDELAY);
+
+    if (m_fd < 0) {
+        throw std::ios_base::failure("Failed to open serial port " + port);
+    }
+
+    tcgetattr(m_fd, &m_settings);
+
+    // set input and output baudrate
+    cfsetispeed(&m_settings, baud);
+    cfsetospeed(&m_settings, baud);
+
+    // disable parity, 1 stop bit, clear data size
+    m_settings.c_cflag &= ~(PARENB | CSTOPB | CSIZE);
+    // set data size to 8
+    m_settings.c_cflag |= CS8;
+
+    // disable hw flow control
+    m_settings.c_cflag &= ~CRTSCTS;
+    // enable receiver and ignore modem lines
+    m_settings.c_cflag |= CREAD | CLOCAL;
+
+    // disable XON / XOFF flow control
+    m_settings.c_iflag &= ~(IXON | IXOFF | IXANY);
+    // non canonical mode
+    m_settings.c_iflag &= ~(ICANON | ECHO | ECHOE | ISIG);
+
+    // no output processing
+    m_settings.c_oflag &= ~OPOST;
+    
+    // input buffer of 8 bytes
+    m_settings.c_cc[VMIN] = 8;
+    // set indefinite timeout
+    m_settings.c_cc[VTIME] = 0;
+
+    if ((tcsetattr(m_fd, TCSANOW, &m_settings)) != 0)
+        throw std::ios_base::failure("Failed to set attributes");
+
+    // clean rx buffer
+    tcflush(m_fd, TCIFLUSH);
+}
+
+serial::~serial()
+{
+    if (m_fd > 0)
+        close(m_fd);
+}
+
+int serial::write(const std::string& data) const
+{
+    write(data.c_str(), data.length());
+}
+
+int serial::write(const char * const data, size_t len) const
+{
+    return ::write(m_fd, data, len);
+}
+
+char serial::read() const
+{
+    char ch;
+
+    if (::read(m_fd, &ch, 1) < 0)
+        throw std::ios_base::failure("Failed to read");
+
+    return ch;
+}
+
+std::string serial::read(size_t howmany) const
+{
+    char data[howmany] = {};
+
+    if (::read(m_fd, data, howmany) < 0)
+        throw std::ios_base::failure("Failed to read");
+
+    return std::string(data);
+}
diff --git a/sw-linux/rom-loader/serial.hpp b/sw-linux/rom-loader/serial.hpp
new file mode 100644
index 0000000..35b35be
--- /dev/null
+++ b/sw-linux/rom-loader/serial.hpp
@@ -0,0 +1,24 @@
+#pragma once
+
+#include <string>
+
+extern "C" {
+#include <termios.h>
+}
+
+class serial
+{
+public:
+    serial(const std::string& port, speed_t baud);
+    ~serial();
+
+    int write(const std::string& data) const;
+    int write(const char * const data, size_t len) const;
+
+    char read() const;
+    std::string read(size_t howmany) const;
+
+private:
+    int m_fd;
+    struct termios m_settings;
+};