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authorOtavio Salvador <otavio@ossystems.com.br>2013-08-23 11:48:58 -0300
committerRichard Purdie <richard.purdie@linuxfoundation.org>2013-09-06 23:15:50 +0100
commit5dba521611d644357cf0a98d2e30dcf41777c6ef (patch)
tree4e170870a6de5b1f41a4cdcf73e730455ba2d39d /meta/classes
parentbf4044ab8f9ef3be087996a559c54eeded1fb0c8 (diff)
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uboot-config.bbclass: Allow choose of U-Boot config for machine
Some machines provide several possible configurations and until now there was no easy way for user to override the default setting. This class provides a system similar to PACKAGECONFIG but for U-Boot. The format is: UBOOT_CONFIG ??= <default> UBOOT_CONFIG[foo] = "config,images" There are two possible parameters: - config: it is used to set UBOOT_MACHINE - images: it is used to append onto IMAGE_FSTYPES Below there's an usage example: ,----[ i.MX6Q SABRE AUTO based example ] | UBOOT_CONFIG ??= "sd" | UBOOT_CONFIG[sd] = "mx6qsabreauto_config,sdcard" | UBOOT_CONFIG[eimnor] = "mx6qsabreauto_eimnor_config" | UBOOT_CONFIG[nand] = "mx6qsabreauto_nand_config,ubifs" | UBOOT_CONFIG[spinor] = "mx6qsabreauto_spinor_config" `---- User can, from local.conf or environment, use UBOOT_CONFIG=nand and override the default setting, as: ,----[ Override example from command line ] | MACHINE=imx6qsabreauto UBOOT_CONFIG=nand bitbake core-image-base `---- Signed-off-by: Otavio Salvador <otavio@ossystems.com.br> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Diffstat (limited to 'meta/classes')
-rw-r--r--meta/classes/uboot-config.bbclass39
1 files changed, 39 insertions, 0 deletions
diff --git a/meta/classes/uboot-config.bbclass b/meta/classes/uboot-config.bbclass
new file mode 100644
index 0000000000..fc37620369
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+++ b/meta/classes/uboot-config.bbclass
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+# Allow easy override of U-Boot config for a machine
+#
+# The format to specify it, in the machine, is:
+#
+# UBOOT_CONFIG ??= <default>
+# UBOOT_CONFIG[foo] = "config,images"
+#
+# Copyright 2013 (C) O.S. Systems Software LTDA.
+
+addhandler uboot_config_eventhandler
+uboot_config_eventhandler[eventmask] = "bb.event.ConfigParsed"
+python uboot_config_eventhandler() {
+ ubootconfigflags = e.data.getVarFlags('UBOOT_CONFIG')
+ if not ubootconfigflags:
+ return
+
+ ubootconfig = (e.data.getVar('UBOOT_CONFIG', True) or "").split()
+ if len(ubootconfig) > 1:
+ raise bb.parse.SkipPackage('You can only have a single default for UBOOT_CONFIG.')
+ elif len(ubootconfig) == 0:
+ raise bb.parse.SkipPackage('You must set a default in UBOOT_CONFIG.')
+ ubootconfig = ubootconfig[0]
+
+ for f, v in ubootconfigflags.items():
+ if f == 'defaultval':
+ continue
+
+ items = v.split(',')
+ if items[0] and len(items) > 2:
+ raise bb.parse.SkipPackage('Only config,images can be specified!')
+
+ if ubootconfig == f:
+ bb.debug(1, "Setting UBOOT_MACHINE to %s." % items[0])
+ e.data.setVar('UBOOT_MACHINE', items[0])
+
+ if items[1]:
+ bb.debug(1, "Appending '%s' to IMAGE_FSTYPES." % items[1])
+ e.data.appendVar('IMAGE_FSTYPES', ' ' + items[1])
+}