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yocto-kernel: add support for printing kernel feature descriptions

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Add a yocto-kernel command allowing users to print the description and
compatibility of a given kernel feature.

(From meta-yocto rev: 73b4f1a8d156af6810cdde3af672d6286a7071e7)

Signed-off-by: Tom Zanussi <tom.zanussi@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Tom Zanussi
2013-03-11 21:46:37 -05:00
committed by Richard Purdie
parent 934f2ed253
commit 2518215438
3 changed files with 105 additions and 0 deletions
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scripts/lib/bsp/kernel.py
+50
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@@ -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):
"""