Commit f861e405 authored by Heiko Carstens's avatar Heiko Carstens Committed by Martin Schwidefsky

[S390] Add config option for z196 code generation.

Add a kernel config option for the IBM zEnterprise 196. This will
produce faster code on newer compilers using the -march=z196 option.
Signed-off-by: default avatarHeiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 7aca2eda
......@@ -287,6 +287,14 @@ config MARCH_Z10
machines such as the z990, z890, z900, z800, z9-109, z9-ec
and z9-bc.
config MARCH_Z196
bool "IBM zEnterprise 196"
help
Select this to enable optimizations for IBM zEnterprise 196.
The kernel will be slightly faster but will not work on older
machines such as the z990, z890, z900, z800, z9-109, z9-ec,
z9-bc, z10-ec and z10-bc.
endchoice
config PACK_STACK
......
......@@ -40,6 +40,7 @@ cflags-$(CONFIG_MARCH_Z900) += $(call cc-option,-march=z900)
cflags-$(CONFIG_MARCH_Z990) += $(call cc-option,-march=z990)
cflags-$(CONFIG_MARCH_Z9_109) += $(call cc-option,-march=z9-109)
cflags-$(CONFIG_MARCH_Z10) += $(call cc-option,-march=z10)
cflags-$(CONFIG_MARCH_Z196) += $(call cc-option,-march=z196)
#KBUILD_IMAGE is necessary for make rpm
KBUILD_IMAGE :=arch/s390/boot/image
......
......@@ -488,7 +488,9 @@ startup:
.align 16
2: .long 0x000a0000,0x8badcccc
#if defined(CONFIG_64BIT)
#if defined(CONFIG_MARCH_Z10)
#if defined(CONFIG_MARCH_Z196)
.long 0xc100efe3, 0xf46c0000
#elif defined(CONFIG_MARCH_Z10)
.long 0xc100efe3, 0xf0680000
#elif defined(CONFIG_MARCH_Z9_109)
.long 0xc100efc3, 0x00000000
......@@ -498,7 +500,9 @@ startup:
.long 0xc0000000, 0x00000000
#endif
#else
#if defined(CONFIG_MARCH_Z10)
#if defined(CONFIG_MARCH_Z196)
.long 0x8100c880, 0x00000000
#elif defined(CONFIG_MARCH_Z10)
.long 0x8100c880, 0x00000000
#elif defined(CONFIG_MARCH_Z9_109)
.long 0x8100c880, 0x00000000
......
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