Author: blogic
Date: 2014-10-20 08:29:44 +0200 (Mon, 20 Oct 2014)
New Revision: 42990
Modified:
trunk/target/linux/ar71xx/image/Makefile
Log:
ar71xx: add comments for Image/BuildLoader{, Alone}.
Signed-off-by: Yousong Zhou <[email protected]>
Modified: trunk/target/linux/ar71xx/image/Makefile
===================================================================
--- trunk/target/linux/ar71xx/image/Makefile 2014-10-20 06:29:38 UTC (rev
42989)
+++ trunk/target/linux/ar71xx/image/Makefile 2014-10-20 06:29:44 UTC (rev
42990)
@@ -215,6 +215,14 @@
( cd $(2); $(STAGING_DIR_HOST)/bin/ubinize -o $(3) -p $(4) -m $(5) $(6)
$(1))
endef
+#
+# Embed lzma-compressed kernel inside lzma-loader.
+#
+# $(1), suffix of output filename, e.g. generic, lowercase board name, etc.
+# $(2), suffix of target file to build, e.g. bin, gz, elf
+# $(3), kernel command line to pass from lzma-loader to kernel
+# $(4), unused here
+# $(5), suffix of kernel filename, e.g. -initramfs, or empty
define Image/BuildLoader
-rm -rf $(KDIR)/lzma-loader
$(LOADER_MAKE) LOADER=loader-$(1).$(2) KERNEL_CMDLINE="$(3)"\
@@ -224,6 +232,13 @@
-$(CP) $(KDIR)/loader-$(1).$(2) $(KDIR)/loader-$(1)$(5).$(2)
endef
+#
+# Build lzma-loader alone which will search for lzma-compressed kernel
identified by
+# uImage header with magic "OKLI" at boot time.
+#
+# $(4), offset into the flash space to start searching uImage magic "OKLI".
+# $(5), size of search range starting at $(4). With 0 as the value, uImage
+# header is expected to be at precisely $(4)
define Image/BuildLoaderAlone
-rm -rf $(KDIR)/lzma-loader
$(LOADER_MAKE) LOADER=loader-$(1).$(2) KERNEL_CMDLINE="$(3)" \
@@ -1015,6 +1030,8 @@
endef
+# $(1): template name to be defined, etc. squashfs-only, 64k, 64kraw, etc.
+# $(2): jffs2 blocksize.
define Jffs2Template
define Image/Build/Template/$(1)/jffs2-$(2)
$$(call
Image/Build/$$(1),jffs2-$(2),$$(2),$$(3),$$(4),$$(5),$$(6),$$(7),$$(8),$$(9),$$(10))
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