我已经使用这里的说明成功构建了一个覆盆子pi Yocto图像:http://www.jumpnowtek.com/rpi/Raspberry-Pi-Systems-with-Yocto.html。当系统启动时,我会看到带有加载栏的Raspberry Pi的默认psplash启动画面。
meta-raspberrypi图层有一个psplash bbappend配方文件,用于定义系统启动时看到的覆盆子pi图像。
me@me:~/poky-morty/meta-raspberrypi$ grep -R SPLASH *
conf/machine/include/rpi-base.inc:SPLASH = "psplash-raspberrypi"
recipes-core/images/rpi-basic-image.bb:SPLASH = "psplash-raspberrypi"
recipes-core/psplash/psplash_git.bbappend:SPLASH_IMAGES += "file://psplash-raspberrypi-img.h;outsuffix=raspberrypi"
dpi-base.inc中的SPLASH变量定义了要使用的启动画面(我认为......),psplash_git.bbappend文件假装带有匹配的后缀raspberry pi的图像。
bbappend看起来像这样:
me@me:~/poky-morty/meta-raspberrypi$ cat recipes-core/psplash/psplash_git.bbappend
FILESEXTRAPATHS_prepend := "${THISDIR}/files:"
SPLASH_IMAGES += "file://psplash-raspberrypi-img.h;outsuffix=raspberrypi"
我有一个自定义图层,我在该图层中使用以下内容创建了另一个psplash_git.bbappend - 尝试使用我自己的图像覆盖用于覆盆子pi启动画面的图像:
me@me:~/rpi/meta-me/recipes-me/psplash$ cat psplash_git.bbappend
FILESEXTRAPATHS_prepend := "${THISDIR}/files:"
SPLASH_IMAGES += "file://social.jpg-img.h;outsuffix=raspberrypi"
如果我尝试使用自定义的bbappend构建我的图像,则会出现以下错误:
Initialising tasks: 100% |##################################| Time: 0:00:05
NOTE: Executing SetScene Tasks
NOTE: Executing RunQueue Tasks
ERROR: psplash-0.1+gitAUTOINC+88343ad23c-r15 do_package: QA Issue: psplash-raspberrypi is listed in PACKAGES multiple times, this leads to packaging errors. [packages-list]
ERROR: psplash-0.1+gitAUTOINC+88343ad23c-r15 do_package: Fatal QA errors found, failing task.
ERROR: psplash-0.1+gitAUTOINC+88343ad23c-r15 do_package: Function failed: do_package
ERROR: Logfile of failure stored in: /home/me/rpi/build/tmp/work/arm1176jzfshf-vfp-poky-linux-gnueabi/psplash/0.1+gitAUTOINC+88343ad23c-r15/temp/log.do_package.63289
ERROR: Task (/home/me/poky-morty/meta/recipes-core/psplash/psplash_git.bb:do_package) failed with exit code '1'
NOTE: Tasks Summary: Attempted 3439 tasks of which 3430 didn't need to be rerun and 1 failed.
如果我将outsuffix更改为默认值,我会得到相同的错误(重复目标)。
我可以通过将bbappend更改为此来解决此错误:
me@me:~/rpi/meta-me/recipes-me/psplash$ cat psplash_git.bbappend
FILESEXTRAPATHS_prepend := "${THISDIR}/files:"
SPLASH_IMAGES += "file://social.jpg-img.h;outsuffix=me"
然后我尝试在我的local.conf中覆盖SPLASH配置变量,如下所示:
# Set the Custom Splash screen
SPLASH = "psplash-me"
但无论我做什么,它总是呈现默认的Raspberry Pi。
如何使用自己的图像覆盖默认的psplash启动画面?感谢。
答案 0 :(得分:1)
该文件的名称应与psplash-%s
%s
raspberrypi
格式social.jpg-img.h
匹配,因此最快的方法是将psplash-raspberrypi-img.h
更改为outsuffix
并覆盖它在原始的raspberrypi psplash.bbappend。
以下是有关如何获取for uri in splashfiles:
fetcher = bb.fetch2.Fetch([uri], d)
flocal = os.path.basename(fetcher.localpath(uri))
fbase = os.path.splitext(flocal)[0]
outsuffix = fetcher.ud[uri].parm.get("outsuffix")
if not outsuffix:
if fbase.startswith("psplash-"):
outsuffix = fbase[8:]
else:
outsuffix = fbase
if outsuffix.endswith('-img'):
outsuffix = outsuffix[:-4]
outname = "psplash-%s" % outsuffix
if outname == '' or outname in oldpkgs:
bb.fatal("The output name '%s' derived from the URI %s is not valid, please specify the outsuffix parameter" % (outname, uri))
else:
pkgs.append(outname)
if flocal.endswith(".png"):
haspng = True
localpaths.append(flocal)
变量的信息;
SPLASH_IMAGES
outsuffix
基本上是具有SPLASH_IMAGES = "file://splash-file-one.h;outsuffix=one \
file://splash-file-two.h;outsuffix=two"
密钥的文件的映射。
+# Set raspberrypi splash image
+SPLASH = "psplash-raspberrypi"
diff --git a/recipes-core/psplash/psplash_git.bbappend b/recipes-core/psplash/psplash_git.bbappend
index eea8dfb..65dc30f 100644
--- a/recipes-core/psplash/psplash_git.bbappend
+++ b/recipes-core/psplash/psplash_git.bbappend
@@ -1,2 +1,2 @@
FILESEXTRAPATHS_prepend := "${THISDIR}/files:"
-SPLASH_IMAGES = "file://psplash-raspberrypi-img.h;outsuffix=default"
+SPLASH_IMAGES += "file://psplash-raspberrypi-img.h;outsuffix=raspberrypi"
--
1.8.2.2
这会自动为每个初始图像条目创建psplash-包(即psplash-one和psplash-two)。
splash:启用时显示启动画面。默认情况下,这个 屏幕由psplash提供,它允许自定义。如果你 喜欢使用另一种闪屏包,你可以这样做 将SPLASH变量设置为不同的包名称(或名称) 在图像配方或发行版配置级别。
而不是使用默认值,raspberrypi提供了在机器配置中选择启动图像的替代方法;此链接提供了更多信息 https://lists.yoctoproject.org/pipermail/yocto/2013-May/013902.html
{{1}}
答案 1 :(得分:1)
如Charles C.所述,一种方法是覆盖psplash-raspberrypi-img.h
然后我尝试像这样在我的local.conf中覆盖SPLASH配置变量:
# Set the Custom Splash screen
SPLASH = "psplash-me"
但是无论我做什么,它总是呈现默认的Raspberry Pi。
从理论上讲,只要进行设置就足够了
psplash_%.bbappend
:
FILESEXTRAPATHS_prepend := "${THISDIR}/files:"
SPLASH_IMAGES_append = " file://foo-img.png;outsuffix=bar"
conf/local.conf
:
SPLASH = " psplash-bar"
与it is done in meta-raspberry
一样,但似乎是meta-raspberry
is setting SPLASH
inside image definition类,并且覆盖了local.conf
中的值
在这一点上,有必要看一下它的价值:
bitbake -e core-image-base | less
并搜索^SPLASH
,您会发现它的最终值为psplash-raspberrypi
。
这是我设法使其工作的方式:
psplash_%.bbappend
:
FILESEXTRAPATHS_prepend := "${THISDIR}/files:"
SPLASH_IMAGES_append = " file://foo-img.png;outsuffix=bar"
ALTERNATIVE_PRIORITY_psplash-bar[psplash] = "200"
conf/local.conf
:
PACKAGE_INSTALL_append = " psplash-bar"
SPLASH_IMAGES_append = " file://foo-img.png;outsuffix=bar"
这将产生包psplash-bar
。您可以提供.png
,它将被转换为适当的头文件,但是您也可以提供原始头。 psplash receipe会推断出来。
PACKAGE_INSTALL_append = " psplash-bar"
这将告诉bitbake将其安装在rootfs上(如果SPLASH
没有被覆盖,那么它将被评估为here)
构建映像psplash-bar
之后的这一点将安装在rootfs上,但是psplash
不会链接到它:
ls -lh /usr/bin/psplash*
lrwxrwxrwx psplash -> /usr/bin/psplash-raspberrypi
-rwxr-xr-x psplash-raspberrypi
-rwxr-xr-x psplash-systemd
-rwxr-xr-x psplash-bar
-rwxr-xr-x psplash-write
这样:
ALTERNATIVE_PRIORITY_psplash-bar[psplash] = "200"
我们将告诉bibtake
使用psplash-bar
作为优先级为200的替代软件包(提供者?)。
ls -lh /usr/bin/psplash*
lrwxrwxrwx psplash -> /usr/bin/psplash-bar
-rwxr-xr-x psplash-raspberrypi
-rwxr-xr-x psplash-systemd
-rwxr-xr-x psplash-bar
-rwxr-xr-x psplash-write