From: Ley Foon Tan <lftan@altera.com>
Date: Tue, 10 Feb 2015 15:26:34 +0000 (+0800)
Subject: nios2: Add support for compressed kernel
X-Git-Tag: fixes-v4.0-rc1~80^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=01623627a292fbd9dc62e05489153d7f1add7061;p=pandora-kernel.git

nios2: Add support for compressed kernel

Signed-off-by: Ley Foon Tan <lftan@altera.com>
---

diff --git a/arch/nios2/Kconfig b/arch/nios2/Kconfig
index 2361acf6d2b1..f77991ecfd8e 100644
--- a/arch/nios2/Kconfig
+++ b/arch/nios2/Kconfig
@@ -134,6 +134,14 @@ config NIOS2_PASS_CMDLINE
 	  will override "Default kernel command string".
 	  Say N if you are unsure.
 
+config NIOS2_BOOT_LINK_OFFSET
+	hex "Link address offset for booting"
+	default "0x00500000"
+	help
+	  This option allows you to set the link address offset of the zImage.
+	  This can be useful if you are on a board which has a small amount of
+	  memory.
+
 endmenu
 
 menu "Advanced setup"
diff --git a/arch/nios2/boot/Makefile b/arch/nios2/boot/Makefile
index 59392dc0bdcb..c899876320df 100644
--- a/arch/nios2/boot/Makefile
+++ b/arch/nios2/boot/Makefile
@@ -24,6 +24,13 @@ $(obj)/vmImage: $(obj)/vmlinux.gz
 	$(call if_changed,uimage)
 	@$(kecho) 'Kernel: $@ is ready'
 
+$(obj)/zImage: $(obj)/compressed/vmlinux FORCE
+	$(call if_changed,objcopy)
+	@$(kecho) 'Kernel: $@ is ready'
+
+$(obj)/compressed/vmlinux: $(obj)/vmlinux.gz FORCE
+	$(Q)$(MAKE) $(build)=$(obj)/compressed $@
+
 # Rule to build device tree blobs
 DTB_SRC := $(patsubst "%",%,$(CONFIG_NIOS2_DTB_SOURCE))
 
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