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# SPDX-License-Identifier: GPL-2.0+
# Copyright 2022 Google LLC
"""Common utility functions for FIT tests"""
import os
import u_boot_utils as util
def make_fname(cons, basename):
"""Make a temporary filename
Args:
cons (ConsoleBase): u_boot_console to use
basename (str): Base name of file to create (within temporary directory)
Return:
Temporary filename
"""
return os.path.join(cons.config.build_dir, basename)
def make_its(cons, base_its, params, basename='test.its'):
"""Make a sample .its file with parameters embedded
Args:
cons (ConsoleBase): u_boot_console to use
base_its (str): Template text for the .its file, typically containing
%() references
params (dict of str): Parameters to embed in the %() strings
basename (str): base name to write to (will be placed in the temp dir)
Returns:
str: Filename of .its file created
"""
its = make_fname(cons, basename)
with open(its, 'w', encoding='utf-8') as outf:
print(base_its % params, file=outf)
return its
def make_fit(cons, mkimage, base_its, params, basename='test.fit', base_fdt=None):
"""Make a sample .fit file ready for loading
This creates a .its script with the selected parameters and uses mkimage to
turn this into a .fit image.
Args:
cons (ConsoleBase): u_boot_console to use
mkimage (str): Filename of 'mkimage' utility
base_its (str): Template text for the .its file, typically containing
%() references
params (dict of str): Parameters to embed in the %() strings
basename (str): base name to write to (will be placed in the temp dir)
Return:
Filename of .fit file created
"""
fit = make_fname(cons, basename)
its = make_its(cons, base_its, params)
util.run_and_log(cons, [mkimage, '-f', its, fit])
if base_fdt:
with open(make_fname(cons, 'u-boot.dts'), 'w') as fd:
fd.write(base_fdt)
return fit
def make_kernel(cons, basename, text):
"""Make a sample kernel with test data
Args:
cons (ConsoleBase): u_boot_console to use
basename (str): base name to write to (will be placed in the temp dir)
text (str): Contents of the kernel file (will be repeated 100 times)
Returns:
str: Full path and filename of the kernel it created
"""
fname = make_fname(cons, basename)
data = ''
for i in range(100):
data += f'this {text} {i} is unlikely to boot\n'
with open(fname, 'w', encoding='utf-8') as outf:
print(data, file=outf)
return fname
def make_dtb(cons, base_fdt, basename):
"""Make a sample .dts file and compile it to a .dtb
Returns:
cons (ConsoleBase): u_boot_console to use
Filename of .dtb file created
"""
src = make_fname(cons, f'{basename}.dts')
dtb = make_fname(cons, f'{basename}.dtb')
with open(src, 'w', encoding='utf-8') as outf:
outf.write(base_fdt)
util.run_and_log(cons, ['dtc', src, '-O', 'dtb', '-o', dtb])
return dtb
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