avionic design with actual uboot and tooling

submodule of avionic design uboot bootloader and with included tools to
get you started , read readme.md and readme-tk1-loader.md

u-boot/tools/patman/terminal.py

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+# Copyright (c) 2011 The Chromium OS Authors.
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+"""Terminal utilities
+
+This module handles terminal interaction including ANSI color codes.
+"""
+
+import os
+import sys
+
+# Selection of when we want our output to be colored
+COLOR_IF_TERMINAL, COLOR_ALWAYS, COLOR_NEVER = range(3)
+
+# Initially, we are set up to print to the terminal
+print_test_mode = False
+print_test_list = []
+
+class PrintLine:
+    """A line of text output
+
+    Members:
+        text: Text line that was printed
+        newline: True to output a newline after the text
+        colour: Text colour to use
+    """
+    def __init__(self, text, newline, colour):
+        self.text = text
+        self.newline = newline
+        self.colour = colour
+
+    def __str__(self):
+        return 'newline=%s, colour=%s, text=%s' % (self.newline, self.colour,
+                self.text)
+
+def Print(text='', newline=True, colour=None):
+    """Handle a line of output to the terminal.
+
+    In test mode this is recorded in a list. Otherwise it is output to the
+    terminal.
+
+    Args:
+        text: Text to print
+        newline: True to add a new line at the end of the text
+        colour: Colour to use for the text
+    """
+    if print_test_mode:
+        print_test_list.append(PrintLine(text, newline, colour))
+    else:
+        if colour:
+            col = Color()
+            text = col.Color(colour, text)
+        print text,
+        if newline:
+            print
+
+def SetPrintTestMode():
+    """Go into test mode, where all printing is recorded"""
+    global print_test_mode
+
+    print_test_mode = True
+
+def GetPrintTestLines():
+    """Get a list of all lines output through Print()
+
+    Returns:
+        A list of PrintLine objects
+    """
+    global print_test_list
+
+    ret = print_test_list
+    print_test_list = []
+    return ret
+
+def EchoPrintTestLines():
+    """Print out the text lines collected"""
+    for line in print_test_list:
+        if line.colour:
+            col = Color()
+            print col.Color(line.colour, line.text),
+        else:
+            print line.text,
+        if line.newline:
+            print
+
+
+class Color(object):
+    """Conditionally wraps text in ANSI color escape sequences."""
+    BLACK, RED, GREEN, YELLOW, BLUE, MAGENTA, CYAN, WHITE = range(8)
+    BOLD = -1
+    BRIGHT_START = '\033[1;%dm'
+    NORMAL_START = '\033[22;%dm'
+    BOLD_START = '\033[1m'
+    RESET = '\033[0m'
+
+    def __init__(self, colored=COLOR_IF_TERMINAL):
+        """Create a new Color object, optionally disabling color output.
+
+        Args:
+          enabled: True if color output should be enabled. If False then this
+            class will not add color codes at all.
+        """
+        try:
+            self._enabled = (colored == COLOR_ALWAYS or
+                    (colored == COLOR_IF_TERMINAL and
+                     os.isatty(sys.stdout.fileno())))
+        except:
+            self._enabled = False
+
+    def Start(self, color, bright=True):
+        """Returns a start color code.
+
+        Args:
+          color: Color to use, .e.g BLACK, RED, etc.
+
+        Returns:
+          If color is enabled, returns an ANSI sequence to start the given
+          color, otherwise returns empty string
+        """
+        if self._enabled:
+            base = self.BRIGHT_START if bright else self.NORMAL_START
+            return base % (color + 30)
+        return ''
+
+    def Stop(self):
+        """Retruns a stop color code.
+
+        Returns:
+          If color is enabled, returns an ANSI color reset sequence,
+          otherwise returns empty string
+        """
+        if self._enabled:
+            return self.RESET
+        return ''
+
+    def Color(self, color, text, bright=True):
+        """Returns text with conditionally added color escape sequences.
+
+        Keyword arguments:
+          color: Text color -- one of the color constants defined in this
+                  class.
+          text: The text to color.
+
+        Returns:
+          If self._enabled is False, returns the original text. If it's True,
+          returns text with color escape sequences based on the value of
+          color.
+        """
+        if not self._enabled:
+            return text
+        if color == self.BOLD:
+            start = self.BOLD_START
+        else:
+            base = self.BRIGHT_START if bright else self.NORMAL_START
+            start = base % (color + 30)
+        return start + text + self.RESET