uboot-config.bbclass: Allow multiple U-Boot config for machine

  This adds support to build multiple U-Boot configs for a machine; this
  is useful when we have support for different media boots which require
  different U-Boot configuration (e.g: eMMC and NAND).

  Below there's an usage example:
  ,----[ i.MX6Q SABRE AUTO based example ]
  | UBOOT_CONFIG ??= "sd eimnor nand spinor"
  | 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"
  `----

Signed-off-by: Chunrong Guo <B40290@freescale.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>

1 files changed, 14 insertions, 23 deletions

diff --git a/meta/classes/uboot-config.bbclass b/meta/classes/uboot-config.bbclass
index b467659cbb..cb061af348 100644
--- a/meta/classes/uboot-config.bbclass
+++ b/meta/classes/uboot-config.bbclass
@@ -31,28 +31,19 @@ python () {
         return
 
     ubootconfig = (d.getVar('UBOOT_CONFIG', True) or "").split()
-    if len(ubootconfig) > 1:
-        raise bb.parse.SkipPackage('You can only have a single default for UBOOT_CONFIG.')
+    if len(ubootconfig) > 0:
+        for config in ubootconfig:
+            for f, v in ubootconfigflags.items():
+                if config == f: 
+                    items = v.split(',')
+                    if items[0] and len(items) > 2:
+                        raise bb.parse.SkipPackage('Only config,images can be specified!')
+                    d.appendVar('UBOOT_MACHINE', ' ' + items[0])
+                    # IMAGE_FSTYPES appending
+                    if len(items) > 1 and items[1]:
+                        bb.debug(1, "Appending '%s' to IMAGE_FSTYPES." % items[1])
+                        d.appendVar('IMAGE_FSTYPES', ' ' + items[1])
+                    break
     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():
-        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])
-            d.setVar('UBOOT_MACHINE', items[0])
-
-            # IMAGE_FSTYPES appending
-            if len(items) > 1 and items[1]:
-                bb.debug(1, "Appending '%s' to IMAGE_FSTYPES." % items[1])
-                d.appendVar('IMAGE_FSTYPES', ' ' + items[1])
-
-            # Go out as we found a match!
-            break
-    else:
-        raise bb.parse.SkipPackage("UBOOT_CONFIG %s is not supported" % ubootconfig)
+       raise bb.parse.SkipPackage('You must set a default in UBOOT_CONFIG.')
 }