Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit f16466af authored by Vasily Gorbik's avatar Vasily Gorbik Committed by Martin Schwidefsky
Browse files

init/Kconfig: add an option for uncompressed kernel 



Add "None" as the kernel compression mode.

This option is useful for debugging the kernel in slow simulation
environments, where decompressing and moving the kernel is awfully slow.

Uncompressed kernel implementation might allow early boot code to skip the
decompressor and jump right at uncompressed kernel image entry point.

Platforms implementing that should define HAVE_KERNEL_UNCOMPRESSED.

Reviewed-by: default avatarHeiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: default avatarVasily Gorbik <gor@linux.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent c98b6c67

init/Kconfig

+14 −1
Original line number Original line Diff line number Diff line
@@ -125,10 +125,13 @@ config HAVE_KERNEL_LZO 
config HAVE_KERNEL_LZ4

config HAVE_KERNEL_LZ4

	bool

	bool





config HAVE_KERNEL_UNCOMPRESSED

	bool



choice

choice

	prompt "Kernel compression mode"

	prompt "Kernel compression mode"

	default KERNEL_GZIP

	default KERNEL_GZIP

	depends on HAVE_KERNEL_GZIP || HAVE_KERNEL_BZIP2 || HAVE_KERNEL_LZMA || HAVE_KERNEL_XZ || HAVE_KERNEL_LZO || HAVE_KERNEL_LZ4

	depends on HAVE_KERNEL_GZIP || HAVE_KERNEL_BZIP2 || HAVE_KERNEL_LZMA || HAVE_KERNEL_XZ || HAVE_KERNEL_LZO || HAVE_KERNEL_LZ4 || HAVE_KERNEL_UNCOMPRESSED

	help

	help

	  The linux kernel is a kind of self-extracting executable.

	  The linux kernel is a kind of self-extracting executable.

	  Several compression algorithms are available, which differ

	  Several compression algorithms are available, which differ
@@ -207,6 +210,16 @@ config KERNEL_LZ4 
	  is about 8% bigger than LZO. But the decompression speed is

	  is about 8% bigger than LZO. But the decompression speed is

	  faster than LZO.

	  faster than LZO.





config KERNEL_UNCOMPRESSED

	bool "None"

	depends on HAVE_KERNEL_UNCOMPRESSED

	help

	  Produce uncompressed kernel image. This option is usually not what

	  you want. It is useful for debugging the kernel in slow simulation

	  environments, where decompressing and moving the kernel is awfully

	  slow. This option allows early boot code to skip the decompressor

	  and jump right at uncompressed kernel image.



endchoice

endchoice





config DEFAULT_HOSTNAME

config DEFAULT_HOSTNAME