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authorRussell King <rmk+kernel@armlinux.org.uk>2017-09-28 11:15:14 +0100
committerRussell King <rmk+kernel@armlinux.org.uk>2017-09-28 11:15:37 +0100
commit476242482bdee72b30f188c2e025f0fa5df0208c (patch)
tree0e2764025f6909c09df99ad3b92728e74b83dfb3 /arch/arm/Kconfig
parent2bd6bf03f4c1c59381d62c61d03f6cc3fe71f66e (diff)
parentca8b5d97d6bfd2d24cec053bbbe35cf356bec4e3 (diff)
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Merge branch 'xip_zdata' of http://git.linaro.org/people/nicolas.pitre/linux into devel-testing
This contains important fixes to the XIP linker script, some more linker script cleanups, .bss clearing and .data copying speedups related to the above, and an opt-in config option for XIP kernels that allows for compressing .data in ROM that depend on those other patches to work properly.
Diffstat (limited to 'arch/arm/Kconfig')
-rw-r--r--arch/arm/Kconfig11
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 7888c9803eb0..1dba9c0d63d5 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -2005,6 +2005,17 @@ config XIP_PHYS_ADDR
be linked for and stored to. This address is dependent on your
own flash usage.
+config XIP_DEFLATED_DATA
+ bool "Store kernel .data section compressed in ROM"
+ depends on XIP_KERNEL
+ select ZLIB_INFLATE
+ help
+ Before the kernel is actually executed, its .data section has to be
+ copied to RAM from ROM. This option allows for storing that data
+ in compressed form and decompressed to RAM rather than merely being
+ copied, saving some precious ROM space. A possible drawback is a
+ slightly longer boot delay.
+
config KEXEC
bool "Kexec system call (EXPERIMENTAL)"
depends on (!SMP || PM_SLEEP_SMP)