parisc: Reintroduce option to gzip-compress the kernel

af21b01d · Helge Deller <[email protected]> · 2017-09-22 22:24:02 +02:00

By adding the feature to build the kernel as self-extracting
executeable, the possibility to simply compress the kernel with gzip was
lost.

This patch now reintroduces this possibilty again and leaves it up to
the user to decide how the kernel should be built.

The palo bootloader is able to natively load both formats.

Signed-off-by: Helge Deller <[email protected]>

Commit: af21b01d1166248f282fc02d0f459c94de06615e
Parents: 606f95e4

Changes

2 files changed · +17 −0

File	Status	Add	Del	Content
arch/parisc/Kconfig	modified	+12	−0	View file
arch/parisc/Makefile	modified	+5	−0	View file

arch/parisc/Kconfig

View file

diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig
index ba7b7dd..a57dedb 100644
--- a/arch/parisc/Kconfig
+++ b/arch/parisc/Kconfig
@@ -257,6 +257,18 @@ config PARISC_PAGE_SIZE_64KB
 
 endchoice
 
+config PARISC_SELF_EXTRACT
+	bool "Build kernel as self-extracting executable"
+	default y
+	help
+	  Say Y if you want to build the parisc kernel as a kind of
+	  self-extracting executable.
+
+	  If you say N here, the kernel will be compressed with gzip
+	  which can be loaded by the palo bootloader directly too.
+
+	  If you don't know what to do here, say Y.
+
 config SMP
 	bool "Symmetric multi-processing support"
 	---help---

arch/parisc/Makefile

View file

diff --git a/arch/parisc/Makefile b/arch/parisc/Makefile
index 58fae5d..01946eb 100644
--- a/arch/parisc/Makefile
+++ b/arch/parisc/Makefile
@@ -129,8 +129,13 @@ Image: vmlinux
 bzImage: vmlinux
 	$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
 
+ifdef CONFIG_PARISC_SELF_EXTRACT
 vmlinuz: bzImage
 	$(OBJCOPY) $(boot)/bzImage $@
+else
+vmlinuz: vmlinux
+	@gzip -cf -9 $< > $@
+endif
 
 install:
 	$(CONFIG_SHELL) $(src)/arch/parisc/install.sh \