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-rw-r--r--scripts/lib/bsp/help.py29
-rw-r--r--scripts/lib/bsp/kernel.py50
-rwxr-xr-xscripts/yocto-kernel26
3 files changed, 105 insertions, 0 deletions
diff --git a/scripts/lib/bsp/help.py b/scripts/lib/bsp/help.py
index 9ba6a93..91de600 100644
--- a/scripts/lib/bsp/help.py
+++ b/scripts/lib/bsp/help.py
@@ -387,6 +387,7 @@ yocto_kernel_usage = """
feature add Have a BSP use a feature
feature rm Have a BSP stop using a feature
features list List the features available to BSPs
+ feature describe Describe a particular feature
See 'yocto-kernel help COMMAND' for more information on a specific command.
@@ -723,6 +724,34 @@ DESCRIPTION
"""
+yocto_kernel_feature_describe_usage = """
+
+ Print the description and compatibility information for a given kernel feature
+
+ usage: yocto-kernel feature describe <bsp-name> [/xxxx/yyyy/feature.scc ...]
+
+ This command prints the description and compatibility of a specific
+ feature in the format 'description [compatibility].
+"""
+
+
+yocto_kernel_feature_describe_help = """
+
+NAME
+ yocto-kernel feature describe - print the description and
+ compatibility information for a given kernel feature
+
+SYNOPSIS
+ yocto-kernel feature describe <bsp-name> [/xxxx/yyyy/feature.scc ...]
+
+DESCRIPTION
+ This command prints the description and compatibility of a
+ specific feature in the format 'description [compatibility]. If
+ the feature doesn't define a description or compatibility, a
+ string with generic unknown values will be printed.
+"""
+
+
##
# yocto-layer help and usage strings
##
diff --git a/scripts/lib/bsp/kernel.py b/scripts/lib/bsp/kernel.py
index 0308600..ac0b074 100644
--- a/scripts/lib/bsp/kernel.py
+++ b/scripts/lib/bsp/kernel.py
@@ -758,6 +758,56 @@ def yocto_kernel_available_features_list(scripts_path, machine):
print_feature_descs(layer, "features")
+def find_feature_desc_url(git_url, feature):
+ """
+ Find the url of the kernel feature in the kernel repo specified
+ from the BSP's kernel recipe SRC_URI.
+ """
+ feature_desc_url = ""
+ if git_url.startswith("git://"):
+ git_url = git_url[len("git://"):].strip()
+ s = git_url.split("/")
+ if s[1].endswith(".git"):
+ s[1] = s[1][:len(s[1]) - len(".git")]
+ feature_desc_url = "http://" + s[0] + "/cgit/cgit.cgi/" + s[1] + \
+ "/plain/meta/cfg/kernel-cache/" + feature + "?h=meta"
+
+ return feature_desc_url
+
+
+def get_feature_desc(git_url, feature):
+ """
+ Return a feature description of the form 'description [compatibility]
+ BSPs, as gathered from the set of feature sources.
+ """
+ feature_desc_url = find_feature_desc_url(git_url, feature)
+ feature_desc_cmd = "wget -q -O - " + feature_desc_url
+ tmp = subprocess.Popen(feature_desc_cmd, shell=True, stdout=subprocess.PIPE).stdout.read()
+
+ return find_feature_desc(tmp.split("\n"))
+
+
+def yocto_kernel_feature_describe(scripts_path, machine, feature):
+ """
+ Display the description of a specific kernel feature available for
+ use in a BSP.
+ """
+ layer = find_bsp_layer(scripts_path, machine)
+
+ kernel = find_current_kernel(layer, machine)
+ if not kernel:
+ print "Couldn't determine the kernel for this BSP, exiting."
+ sys.exit(1)
+
+ context = create_context(machine, "arch", scripts_path)
+ context["name"] = "name"
+ context["filename"] = kernel
+ giturl = find_giturl(context)
+
+ desc = get_feature_desc(giturl, feature)
+
+ print desc
+
def base_branches(context):
"""
diff --git a/scripts/yocto-kernel b/scripts/yocto-kernel
index a66a727..1f6ed67 100755
--- a/scripts/yocto-kernel
+++ b/scripts/yocto-kernel
@@ -243,6 +243,29 @@ def yocto_kernel_available_features_list_subcommand(args, usage_str):
yocto_kernel_available_features_list(scripts_path, args[0])
+def yocto_kernel_feature_describe_subcommand(args, usage_str):
+ """
+ Command-line handling for listing the description of a specific
+ kernel feature available for use in a BSP. This includes the
+ features present in the meta branch(es) of the pointed-to repo(s)
+ as well as the local features added in recipe-space to the current
+ BSP as well. The real work is done by
+ bsp.kernel.yocto_kernel_feature_describe().
+ """
+ logging.debug("yocto_kernel_feature_describe_subcommand")
+
+ parser = optparse.OptionParser(usage = usage_str)
+
+ (options, args) = parser.parse_args(args)
+
+ if len(args) != 2:
+ logging.error("Wrong number of arguments, exiting\n")
+ parser.print_help()
+ sys.exit(1)
+
+ yocto_kernel_feature_describe(scripts_path, args[0], args[1])
+
+
subcommands = {
"config-list": [yocto_kernel_config_list_subcommand,
yocto_kernel_config_list_usage,
@@ -274,6 +297,9 @@ subcommands = {
"features-list": [yocto_kernel_available_features_list_subcommand,
yocto_kernel_available_features_list_usage,
yocto_kernel_available_features_list_help],
+ "feature-describe": [yocto_kernel_feature_describe_subcommand,
+ yocto_kernel_feature_describe_usage,
+ yocto_kernel_feature_describe_help],
}
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