import pytest
import re
import sys
+import u_boot_spawn
# Regexes for text we expect U-Boot to send to the console.
-pattern_u_boot_spl_signon = re.compile('(U-Boot SPL \\d{4}\\.\\d{2}-[^\r\n]*)')
-pattern_u_boot_main_signon = re.compile('(U-Boot \\d{4}\\.\\d{2}-[^\r\n]*)')
+pattern_u_boot_spl_signon = re.compile('(U-Boot SPL \\d{4}\\.\\d{2}[^\r\n]*\\))')
+pattern_u_boot_main_signon = re.compile('(U-Boot \\d{4}\\.\\d{2}[^\r\n]*\\))')
pattern_stop_autoboot_prompt = re.compile('Hit any key to stop autoboot: ')
pattern_unknown_command = re.compile('Unknown command \'.*\' - try \'help\'')
pattern_error_notification = re.compile('## Error: ')
+pattern_error_please_reset = re.compile('### ERROR ### Please RESET the board ###')
+
+PAT_ID = 0
+PAT_RE = 1
+
+bad_pattern_defs = (
+ ('spl_signon', pattern_u_boot_spl_signon),
+ ('main_signon', pattern_u_boot_main_signon),
+ ('stop_autoboot_prompt', pattern_stop_autoboot_prompt),
+ ('unknown_command', pattern_unknown_command),
+ ('error_notification', pattern_error_notification),
+ ('error_please_reset', pattern_error_please_reset),
+)
class ConsoleDisableCheck(object):
- '''Context manager (for Python's with statement) that temporarily disables
+ """Context manager (for Python's with statement) that temporarily disables
the specified console output error check. This is useful when deliberately
executing a command that is known to trigger one of the error checks, in
order to test that the error condition is actually raised. This class is
used internally by ConsoleBase::disable_check(); it is not intended for
- direct usage.'''
+ direct usage."""
def __init__(self, console, check_type):
self.console = console
def __enter__(self):
self.console.disable_check_count[self.check_type] += 1
+ self.console.eval_bad_patterns()
def __exit__(self, extype, value, traceback):
self.console.disable_check_count[self.check_type] -= 1
+ self.console.eval_bad_patterns()
+
+class ConsoleSetupTimeout(object):
+ """Context manager (for Python's with statement) that temporarily sets up
+ timeout for specific command. This is useful when execution time is greater
+ then default 30s."""
+
+ def __init__(self, console, timeout):
+ self.p = console.p
+ self.orig_timeout = self.p.timeout
+ self.p.timeout = timeout
+
+ def __enter__(self):
+ return self
+
+ def __exit__(self, extype, value, traceback):
+ self.p.timeout = self.orig_timeout
class ConsoleBase(object):
- '''The interface through which test functions interact with the U-Boot
+ """The interface through which test functions interact with the U-Boot
console. This primarily involves executing shell commands, capturing their
results, and checking for common error conditions. Some common utilities
- are also provided too.'''
+ are also provided too."""
def __init__(self, log, config, max_fifo_fill):
- '''Initialize a U-Boot console connection.
+ """Initialize a U-Boot console connection.
Can only usefully be called by sub-classes.
Returns:
Nothing.
- '''
+ """
self.log = log
self.config = config
self.prompt = self.config.buildconfig['config_sys_prompt'][1:-1]
self.prompt_escaped = re.escape(self.prompt)
self.p = None
- self.disable_check_count = {
- 'spl_signon': 0,
- 'main_signon': 0,
- 'unknown_command': 0,
- 'error_notification': 0,
- }
+ self.disable_check_count = {pat[PAT_ID]: 0 for pat in bad_pattern_defs}
+ self.eval_bad_patterns()
self.at_prompt = False
self.at_prompt_logevt = None
- self.ram_base = None
+
+ def eval_bad_patterns(self):
+ self.bad_patterns = [pat[PAT_RE] for pat in bad_pattern_defs \
+ if self.disable_check_count[pat[PAT_ID]] == 0]
+ self.bad_pattern_ids = [pat[PAT_ID] for pat in bad_pattern_defs \
+ if self.disable_check_count[pat[PAT_ID]] == 0]
def close(self):
- '''Terminate the connection to the U-Boot console.
+ """Terminate the connection to the U-Boot console.
This function is only useful once all interaction with U-Boot is
complete. Once this function is called, data cannot be sent to or
Returns:
Nothing.
- '''
+ """
if self.p:
self.p.close()
def run_command(self, cmd, wait_for_echo=True, send_nl=True,
wait_for_prompt=True):
- '''Execute a command via the U-Boot console.
+ """Execute a command via the U-Boot console.
The command is always sent to U-Boot.
The output from U-Boot during command execution. In other
words, the text U-Boot emitted between the point it echod the
command string and emitted the subsequent command prompts.
- '''
-
- self.ensure_spawned()
+ """
if self.at_prompt and \
self.at_prompt_logevt != self.logstream.logfile.cur_evt:
self.logstream.write(self.prompt, implicit=True)
- bad_patterns = []
- bad_pattern_ids = []
- if (self.disable_check_count['spl_signon'] == 0 and
- self.u_boot_spl_signon):
- bad_patterns.append(self.u_boot_spl_signon_escaped)
- bad_pattern_ids.append('SPL signon')
- if self.disable_check_count['main_signon'] == 0:
- bad_patterns.append(self.u_boot_main_signon_escaped)
- bad_pattern_ids.append('U-Boot main signon')
- if self.disable_check_count['unknown_command'] == 0:
- bad_patterns.append(pattern_unknown_command)
- bad_pattern_ids.append('Unknown command')
- if self.disable_check_count['error_notification'] == 0:
- bad_patterns.append(pattern_error_notification)
- bad_pattern_ids.append('Error notification')
try:
self.at_prompt = False
if send_nl:
continue
chunk = re.escape(chunk)
chunk = chunk.replace('\\\n', '[\r\n]')
- m = self.p.expect([chunk] + bad_patterns)
+ m = self.p.expect([chunk] + self.bad_patterns)
if m != 0:
self.at_prompt = False
raise Exception('Bad pattern found on console: ' +
- bad_pattern_ids[m - 1])
+ self.bad_pattern_ids[m - 1])
if not wait_for_prompt:
return
- m = self.p.expect([self.prompt_escaped] + bad_patterns)
+ m = self.p.expect([self.prompt_escaped] + self.bad_patterns)
if m != 0:
self.at_prompt = False
raise Exception('Bad pattern found on console: ' +
- bad_pattern_ids[m - 1])
+ self.bad_pattern_ids[m - 1])
self.at_prompt = True
self.at_prompt_logevt = self.logstream.logfile.cur_evt
# Only strip \r\n; space/TAB might be significant if testing
self.cleanup_spawn()
raise
+ def run_command_list(self, cmds):
+ """Run a list of commands.
+
+ This is a helper function to call run_command() with default arguments
+ for each command in a list.
+
+ Args:
+ cmd: List of commands (each a string)
+ Returns:
+ Combined output of all commands, as a string
+ """
+ output = ''
+ for cmd in cmds:
+ output += self.run_command(cmd)
+ return output
+
def ctrlc(self):
- '''Send a CTRL-C character to U-Boot.
+ """Send a CTRL-C character to U-Boot.
This is useful in order to stop execution of long-running synchronous
commands such as "ums".
Returns:
Nothing.
- '''
+ """
+ self.log.action('Sending Ctrl-C')
self.run_command(chr(3), wait_for_echo=False, send_nl=False)
+ def wait_for(self, text):
+ """Wait for a pattern to be emitted by U-Boot.
+
+ This is useful when a long-running command such as "dfu" is executing,
+ and it periodically emits some text that should show up at a specific
+ location in the log file.
+
+ Args:
+ text: The text to wait for; either a string (containing raw text,
+ not a regular expression) or an re object.
+
+ Returns:
+ Nothing.
+ """
+
+ if type(text) == type(''):
+ text = re.escape(text)
+ m = self.p.expect([text] + self.bad_patterns)
+ if m != 0:
+ raise Exception('Bad pattern found on console: ' +
+ self.bad_pattern_ids[m - 1])
+
+ def drain_console(self):
+ """Read from and log the U-Boot console for a short time.
+
+ U-Boot's console output is only logged when the test code actively
+ waits for U-Boot to emit specific data. There are cases where tests
+ can fail without doing this. For example, if a test asks U-Boot to
+ enable USB device mode, then polls until a host-side device node
+ exists. In such a case, it is useful to log U-Boot's console output
+ in case U-Boot printed clues as to why the host-side even did not
+ occur. This function will do that.
+
+ Args:
+ None.
+
+ Returns:
+ Nothing.
+ """
+
+ # If we are already not connected to U-Boot, there's nothing to drain.
+ # This should only happen when a previous call to run_command() or
+ # wait_for() failed (and hence the output has already been logged), or
+ # the system is shutting down.
+ if not self.p:
+ return
+
+ orig_timeout = self.p.timeout
+ try:
+ # Drain the log for a relatively short time.
+ self.p.timeout = 1000
+ # Wait for something U-Boot will likely never send. This will
+ # cause the console output to be read and logged.
+ self.p.expect(['This should never match U-Boot output'])
+ except u_boot_spawn.Timeout:
+ pass
+ finally:
+ self.p.timeout = orig_timeout
+
def ensure_spawned(self):
- '''Ensure a connection to a correctly running U-Boot instance.
+ """Ensure a connection to a correctly running U-Boot instance.
This may require spawning a new Sandbox process or resetting target
hardware, as defined by the implementation sub-class.
Returns:
Nothing.
- '''
+ """
if self.p:
return
try:
+ self.log.start_section('Starting U-Boot')
self.at_prompt = False
- self.log.action('Starting U-Boot')
self.p = self.get_spawn()
# Real targets can take a long time to scroll large amounts of
# text if LCD is enabled. This value may need tweaking in the
# future, possibly per-test to be optimal. This works for 'help'
# on board 'seaboard'.
- self.p.timeout = 30000
+ if not self.config.gdbserver:
+ self.p.timeout = 30000
self.p.logfile_read = self.logstream
- if self.config.buildconfig.get('CONFIG_SPL', False) == 'y':
- self.p.expect([pattern_u_boot_spl_signon])
- self.u_boot_spl_signon = self.p.after
- self.u_boot_spl_signon_escaped = re.escape(self.p.after)
- else:
- self.u_boot_spl_signon = None
- self.p.expect([pattern_u_boot_main_signon])
- self.u_boot_main_signon = self.p.after
- self.u_boot_main_signon_escaped = re.escape(self.p.after)
- build_idx = self.u_boot_main_signon.find(', Build:')
- if build_idx == -1:
- self.u_boot_version_string = self.u_boot_main_signon
- else:
- self.u_boot_version_string = self.u_boot_main_signon[:build_idx]
+ bcfg = self.config.buildconfig
+ config_spl = bcfg.get('config_spl', 'n') == 'y'
+ config_spl_serial_support = bcfg.get('config_spl_serial_support',
+ 'n') == 'y'
+ env_spl_skipped = self.config.env.get('env__spl_skipped',
+ False)
+ if config_spl and config_spl_serial_support and not env_spl_skipped:
+ m = self.p.expect([pattern_u_boot_spl_signon] +
+ self.bad_patterns)
+ if m != 0:
+ raise Exception('Bad pattern found on SPL console: ' +
+ self.bad_pattern_ids[m - 1])
+ m = self.p.expect([pattern_u_boot_main_signon] + self.bad_patterns)
+ if m != 0:
+ raise Exception('Bad pattern found on console: ' +
+ self.bad_pattern_ids[m - 1])
+ self.u_boot_version_string = self.p.after
while True:
- match = self.p.expect([self.prompt_escaped,
- pattern_stop_autoboot_prompt])
- if match == 1:
- self.p.send(chr(3)) # CTRL-C
+ m = self.p.expect([self.prompt_escaped,
+ pattern_stop_autoboot_prompt] + self.bad_patterns)
+ if m == 0:
+ break
+ if m == 1:
+ self.p.send(' ')
continue
- break
+ raise Exception('Bad pattern found on console: ' +
+ self.bad_pattern_ids[m - 2])
self.at_prompt = True
self.at_prompt_logevt = self.logstream.logfile.cur_evt
except Exception as ex:
self.log.error(str(ex))
self.cleanup_spawn()
raise
+ finally:
+ self.log.end_section('Starting U-Boot')
def cleanup_spawn(self):
- '''Shut down all interaction with the U-Boot instance.
+ """Shut down all interaction with the U-Boot instance.
This is used when an error is detected prior to re-establishing a
connection with a fresh U-Boot instance.
Returns:
Nothing.
- '''
+ """
try:
if self.p:
pass
self.p = None
+ def get_spawn_output(self):
+ """Return the start-up output from U-Boot
+
+ Returns:
+ The output produced by ensure_spawed(), as a string.
+ """
+ if self.p:
+ return self.p.get_expect_output()
+ return None
+
def validate_version_string_in_text(self, text):
- '''Assert that a command's output includes the U-Boot signon message.
+ """Assert that a command's output includes the U-Boot signon message.
This is primarily useful for validating the "version" command without
duplicating the signon text regex in a test function.
Returns:
Nothing. An exception is raised if the validation fails.
- '''
+ """
assert(self.u_boot_version_string in text)
def disable_check(self, check_type):
- '''Temporarily disable an error check of U-Boot's output.
+ """Temporarily disable an error check of U-Boot's output.
Create a new context manager (for use with the "with" statement) which
temporarily disables a particular console output error check.
Returns:
A context manager object.
- '''
+ """
return ConsoleDisableCheck(self, check_type)
- def find_ram_base(self):
- '''Find the running U-Boot's RAM location.
+ def temporary_timeout(self, timeout):
+ """Temporarily set up different timeout for commands.
- Probe the running U-Boot to determine the address of the first bank
- of RAM. This is useful for tests that test reading/writing RAM, or
- load/save files that aren't associated with some standard address
- typically represented in an environment variable such as
- ${kernel_addr_r}. The value is cached so that it only needs to be
- actively read once.
+ Create a new context manager (for use with the "with" statement) which
+ temporarily change timeout.
Args:
- None.
+ timeout: Time in milliseconds.
Returns:
- The address of U-Boot's first RAM bank, as an integer.
- '''
-
- if self.config.buildconfig.get('config_cmd_bdi', 'n') != 'y':
- pytest.skip('bdinfo command not supported')
- if self.ram_base == -1:
- pytest.skip('Previously failed to find RAM bank start')
- if self.ram_base is not None:
- return self.ram_base
-
- with self.log.section('find_ram_base'):
- response = self.run_command('bdinfo')
- for l in response.split('\n'):
- if '-> start' in l:
- self.ram_base = int(l.split('=')[1].strip(), 16)
- break
- if self.ram_base is None:
- self.ram_base = -1
- raise Exception('Failed to find RAM bank start in `bdinfo`')
+ A context manager object.
+ """
- return self.ram_base
+ return ConsoleSetupTimeout(self, timeout)
projects / platform / kernel / u-boot.git / blobdiff