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authorTom Rini <trini@konsulko.com>2019-07-24 14:15:51 -0400
committerTom Rini <trini@konsulko.com>2019-07-24 14:15:51 -0400
commita9aa4c5700c68c070d63a391b51ea8d341b6e8a6 (patch)
tree974a824402b489cfec95f2ca8ec5bd9fef71a8bc /doc
parentef783259d6a558d31385039fa0def211fa7ad032 (diff)
parente21e3ffdd18b88a12d98f6ae985fd5d334b9cec9 (diff)
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Merge branch '2019-07-24-master-imports'
- Various Android related changes including A/B update and BCB updates - Assorted minor fixes
Diffstat (limited to 'doc')
-rw-r--r--doc/.gitignore1
-rw-r--r--doc/android/ab.txt67
-rw-r--r--doc/conf.py2
-rw-r--r--doc/sphinx/kerneldoc.py12
-rw-r--r--doc/sphinx/kernellog.py28
-rw-r--r--doc/sphinx/kfigure.py40
-rw-r--r--doc/uImage.FIT/signature.txt7
7 files changed, 133 insertions, 24 deletions
diff --git a/doc/.gitignore b/doc/.gitignore
new file mode 100644
index 0000000..53752db
--- /dev/null
+++ b/doc/.gitignore
@@ -0,0 +1 @@
+output
diff --git a/doc/android/ab.txt b/doc/android/ab.txt
new file mode 100644
index 0000000..9f37ed5
--- /dev/null
+++ b/doc/android/ab.txt
@@ -0,0 +1,67 @@
+Android A/B updates
+===================
+
+Overview
+--------
+
+A/B system updates ensures modern approach for system update. This feature
+allows one to use two sets (or more) of partitions referred to as slots
+(normally slot A and slot B). The system runs from the current slot while the
+partitions in the unused slot can be updated [1].
+
+A/B enablement
+--------------
+
+The A/B updates support can be activated by specifying next options in
+your board configuration file:
+
+ CONFIG_ANDROID_AB=y
+ CONFIG_CMD_AB_SELECT=y
+
+The disk space on target device must be partitioned in a way so that each
+partition which needs to be updated has two or more instances. The name of
+each instance must be formed by adding suffixes: _a, _b, _c, etc.
+For example: boot_a, boot_b, system_a, system_b, vendor_a, vendor_b.
+
+As a result you can use 'ab_select' command to ensure A/B boot process in your
+boot script. This command analyzes and processes A/B metadata stored on a
+special partition (e.g. "misc") and determines which slot should be used for
+booting up.
+
+Command usage
+-------------
+
+ ab_select <slot_var_name> <interface> <dev[:part_number|#part_name]>
+
+for example:
+
+ => ab_select slot_name mmc 1:4
+
+or
+
+ => ab_select slot_name mmc 1#misc
+
+Result:
+
+ => printenv slot_name
+ slot_name=a
+
+Based on this slot information, the current boot partition should be defined,
+and next kernel command line parameters should be generated:
+
+ - androidboot.slot_suffix=
+ - root=
+
+For example:
+
+ androidboot.slot_suffix=_a root=/dev/mmcblk1p12
+
+A/B metadata is organized according to AOSP reference [2]. On the first system
+start with A/B enabled, when 'misc' partition doesn't contain required data,
+the default A/B metadata will be created and written to 'misc' partition.
+
+References
+----------
+
+[1] https://source.android.com/devices/tech/ota/ab
+[2] bootable/recovery/bootloader_message/include/bootloader_message/bootloader_message.h
diff --git a/doc/conf.py b/doc/conf.py
index 168c313..0772fb6 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -170,7 +170,7 @@ except ImportError:
# The name of an image file (relative to this directory) to place at the top
# of the sidebar.
-#html_logo = None
+html_logo = '../tools/logos/u-boot_logo.svg'
# The name of an image file (within the static path) to use as favicon of the
# docs. This file should be a Windows icon file (.ico) being 16x16 or 32x32
diff --git a/doc/sphinx/kerneldoc.py b/doc/sphinx/kerneldoc.py
index fbedcc3..e536360 100644
--- a/doc/sphinx/kerneldoc.py
+++ b/doc/sphinx/kerneldoc.py
@@ -39,6 +39,8 @@ from docutils.statemachine import ViewList
from docutils.parsers.rst import directives, Directive
from sphinx.ext.autodoc import AutodocReporter
+import kernellog
+
__version__ = '1.0'
class KernelDocDirective(Directive):
@@ -86,7 +88,8 @@ class KernelDocDirective(Directive):
cmd += [filename]
try:
- env.app.verbose('calling kernel-doc \'%s\'' % (" ".join(cmd)))
+ kernellog.verbose(env.app,
+ 'calling kernel-doc \'%s\'' % (" ".join(cmd)))
p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
out, err = p.communicate()
@@ -96,7 +99,8 @@ class KernelDocDirective(Directive):
if p.returncode != 0:
sys.stderr.write(err)
- env.app.warn('kernel-doc \'%s\' failed with return code %d' % (" ".join(cmd), p.returncode))
+ kernellog.warn(env.app,
+ 'kernel-doc \'%s\' failed with return code %d' % (" ".join(cmd), p.returncode))
return [nodes.error(None, nodes.paragraph(text = "kernel-doc missing"))]
elif env.config.kerneldoc_verbosity > 0:
sys.stderr.write(err)
@@ -128,8 +132,8 @@ class KernelDocDirective(Directive):
return node.children
except Exception as e: # pylint: disable=W0703
- env.app.warn('kernel-doc \'%s\' processing failed with: %s' %
- (" ".join(cmd), str(e)))
+ kernellog.warn(env.app, 'kernel-doc \'%s\' processing failed with: %s' %
+ (" ".join(cmd), str(e)))
return [nodes.error(None, nodes.paragraph(text = "kernel-doc missing"))]
def setup(app):
diff --git a/doc/sphinx/kernellog.py b/doc/sphinx/kernellog.py
new file mode 100644
index 0000000..af924f5
--- /dev/null
+++ b/doc/sphinx/kernellog.py
@@ -0,0 +1,28 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Sphinx has deprecated its older logging interface, but the replacement
+# only goes back to 1.6. So here's a wrapper layer to keep around for
+# as long as we support 1.4.
+#
+import sphinx
+
+if sphinx.__version__[:3] >= '1.6':
+ UseLogging = True
+ from sphinx.util import logging
+ logger = logging.getLogger('kerneldoc')
+else:
+ UseLogging = False
+
+def warn(app, message):
+ if UseLogging:
+ logger.warning(message)
+ else:
+ app.warn(message)
+
+def verbose(app, message):
+ if UseLogging:
+ logger.verbose(message)
+ else:
+ app.verbose(message)
+
+
diff --git a/doc/sphinx/kfigure.py b/doc/sphinx/kfigure.py
index b97228d..fbfe669 100644
--- a/doc/sphinx/kfigure.py
+++ b/doc/sphinx/kfigure.py
@@ -60,6 +60,8 @@ import sphinx
from sphinx.util.nodes import clean_astext
from six import iteritems
+import kernellog
+
PY3 = sys.version_info[0] == 3
if PY3:
@@ -171,20 +173,20 @@ def setupTools(app):
This function is called once, when the builder is initiated.
"""
global dot_cmd, convert_cmd # pylint: disable=W0603
- app.verbose("kfigure: check installed tools ...")
+ kernellog.verbose(app, "kfigure: check installed tools ...")
dot_cmd = which('dot')
convert_cmd = which('convert')
if dot_cmd:
- app.verbose("use dot(1) from: " + dot_cmd)
+ kernellog.verbose(app, "use dot(1) from: " + dot_cmd)
else:
- app.warn("dot(1) not found, for better output quality install "
- "graphviz from http://www.graphviz.org")
+ kernellog.warn(app, "dot(1) not found, for better output quality install "
+ "graphviz from http://www.graphviz.org")
if convert_cmd:
- app.verbose("use convert(1) from: " + convert_cmd)
+ kernellog.verbose(app, "use convert(1) from: " + convert_cmd)
else:
- app.warn(
+ kernellog.warn(app,
"convert(1) not found, for SVG to PDF conversion install "
"ImageMagick (https://www.imagemagick.org)")
@@ -220,12 +222,13 @@ def convert_image(img_node, translator, src_fname=None):
# in kernel builds, use 'make SPHINXOPTS=-v' to see verbose messages
- app.verbose('assert best format for: ' + img_node['uri'])
+ kernellog.verbose(app, 'assert best format for: ' + img_node['uri'])
if in_ext == '.dot':
if not dot_cmd:
- app.verbose("dot from graphviz not available / include DOT raw.")
+ kernellog.verbose(app,
+ "dot from graphviz not available / include DOT raw.")
img_node.replace_self(file2literal(src_fname))
elif translator.builder.format == 'latex':
@@ -252,7 +255,8 @@ def convert_image(img_node, translator, src_fname=None):
if translator.builder.format == 'latex':
if convert_cmd is None:
- app.verbose("no SVG to PDF conversion available / include SVG raw.")
+ kernellog.verbose(app,
+ "no SVG to PDF conversion available / include SVG raw.")
img_node.replace_self(file2literal(src_fname))
else:
dst_fname = path.join(translator.builder.outdir, fname + '.pdf')
@@ -265,18 +269,19 @@ def convert_image(img_node, translator, src_fname=None):
_name = dst_fname[len(translator.builder.outdir) + 1:]
if isNewer(dst_fname, src_fname):
- app.verbose("convert: {out}/%s already exists and is newer" % _name)
+ kernellog.verbose(app,
+ "convert: {out}/%s already exists and is newer" % _name)
else:
ok = False
mkdir(path.dirname(dst_fname))
if in_ext == '.dot':
- app.verbose('convert DOT to: {out}/' + _name)
+ kernellog.verbose(app, 'convert DOT to: {out}/' + _name)
ok = dot2format(app, src_fname, dst_fname)
elif in_ext == '.svg':
- app.verbose('convert SVG to: {out}/' + _name)
+ kernellog.verbose(app, 'convert SVG to: {out}/' + _name)
ok = svg2pdf(app, src_fname, dst_fname)
if not ok:
@@ -305,7 +310,8 @@ def dot2format(app, dot_fname, out_fname):
with open(out_fname, "w") as out:
exit_code = subprocess.call(cmd, stdout = out)
if exit_code != 0:
- app.warn("Error #%d when calling: %s" % (exit_code, " ".join(cmd)))
+ kernellog.warn(app,
+ "Error #%d when calling: %s" % (exit_code, " ".join(cmd)))
return bool(exit_code == 0)
def svg2pdf(app, svg_fname, pdf_fname):
@@ -322,7 +328,7 @@ def svg2pdf(app, svg_fname, pdf_fname):
# use stdout and stderr from parent
exit_code = subprocess.call(cmd)
if exit_code != 0:
- app.warn("Error #%d when calling: %s" % (exit_code, " ".join(cmd)))
+ kernellog.warn(app, "Error #%d when calling: %s" % (exit_code, " ".join(cmd)))
return bool(exit_code == 0)
@@ -415,15 +421,15 @@ def visit_kernel_render(self, node):
app = self.builder.app
srclang = node.get('srclang')
- app.verbose('visit kernel-render node lang: "%s"' % (srclang))
+ kernellog.verbose(app, 'visit kernel-render node lang: "%s"' % (srclang))
tmp_ext = RENDER_MARKUP_EXT.get(srclang, None)
if tmp_ext is None:
- app.warn('kernel-render: "%s" unknown / include raw.' % (srclang))
+ kernellog.warn(app, 'kernel-render: "%s" unknown / include raw.' % (srclang))
return
if not dot_cmd and tmp_ext == '.dot':
- app.verbose("dot from graphviz not available / include raw.")
+ kernellog.verbose(app, "dot from graphviz not available / include raw.")
return
literal_block = node[0]
diff --git a/doc/uImage.FIT/signature.txt b/doc/uImage.FIT/signature.txt
index c9b1802..eee0651 100644
--- a/doc/uImage.FIT/signature.txt
+++ b/doc/uImage.FIT/signature.txt
@@ -216,7 +216,7 @@ As an example, consider this FIT:
kernel = "kernel-1";
fdt = "fdt-1";
};
- conf-1 {
+ conf-2 {
kernel = "kernel-2";
fdt = "fdt-2";
};
@@ -232,7 +232,7 @@ configuration 3 with kernel 1 and fdt 2:
kernel = "kernel-1";
fdt = "fdt-1";
};
- conf-1 {
+ conf-2 {
kernel = "kernel-2";
fdt = "fdt-2";
};
@@ -337,6 +337,7 @@ WARNING: When relying on signed FIT images with required signature check
the legacy image format is default disabled by not defining
CONFIG_LEGACY_IMAGE_FORMAT
+
Testing
-------
An easy way to test signing and verification is to use the test script
@@ -349,6 +350,8 @@ A sample run is show below:
$ make O=sandbox sandbox_config
$ make O=sandbox
$ O=sandbox ./test/vboot/vboot_test.sh
+
+
Simple Verified Boot Test
=========================