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s390: add support for IBM z14 machines

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Add detection for machine type 0x3906 and set the ELF platform name
to z14. Add the miscellaneous-instruction-extension 2 facility to
the list of facilities for z14.

And allow to generate code that only runs on a z14 machine.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Martin Schwidefsky 2017-04-12 14:17:25 +02:00
parent 6e2ef5e4f6
commit 6997c32365
4 changed files with 28 additions and 2 deletions
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18
arch/s390/Kconfig
View File

@ -222,6 +222,10 @@ config HAVE_MARCH_Z13_FEATURES
def_bool n
select HAVE_MARCH_ZEC12_FEATURES
config HAVE_MARCH_Z14_FEATURES
def_bool n
select HAVE_MARCH_Z13_FEATURES
choice
prompt "Processor type"
default MARCH_Z196
@ -282,6 +286,14 @@ config MARCH_Z13
2964 series). The kernel will be slightly faster but will not work on
older machines.
config MARCH_Z14
bool "IBM z14"
select HAVE_MARCH_Z14_FEATURES
help
Select this to enable optimizations for IBM z14 (3906 series).
The kernel will be slightly faster but will not work on older
machines.
endchoice
config MARCH_Z900_TUNE
@ -305,6 +317,9 @@ config MARCH_ZEC12_TUNE
config MARCH_Z13_TUNE
def_bool TUNE_Z13 || MARCH_Z13 && TUNE_DEFAULT
config MARCH_Z14_TUNE
def_bool TUNE_Z14 || MARCH_Z14 && TUNE_DEFAULT
choice
prompt "Tune code generation"
default TUNE_DEFAULT
@ -343,6 +358,9 @@ config TUNE_ZEC12
config TUNE_Z13
bool "IBM z13"
config TUNE_Z14
bool "IBM z14"
endchoice
config 64BIT

6
arch/s390/Makefile
View File

@ -31,7 +31,8 @@ mflags-$(CONFIG_MARCH_Z9_109) := -march=z9-109
mflags-$(CONFIG_MARCH_Z10) := -march=z10
mflags-$(CONFIG_MARCH_Z196) := -march=z196
mflags-$(CONFIG_MARCH_ZEC12) := -march=zEC12
mflags-$(CONFIG_MARCH_Z13) := -march=z13
mflags-$(CONFIG_MARCH_Z13) := -march=z13
mflags-$(CONFIG_MARCH_Z14) := -march=z14
export CC_FLAGS_MARCH := $(mflags-y)
@ -44,7 +45,8 @@ cflags-$(CONFIG_MARCH_Z9_109_TUNE) += -mtune=z9-109
cflags-$(CONFIG_MARCH_Z10_TUNE) += -mtune=z10
cflags-$(CONFIG_MARCH_Z196_TUNE) += -mtune=z196
cflags-$(CONFIG_MARCH_ZEC12_TUNE) += -mtune=zEC12
cflags-$(CONFIG_MARCH_Z13_TUNE) += -mtune=z13
cflags-$(CONFIG_MARCH_Z13_TUNE) += -mtune=z13
cflags-$(CONFIG_MARCH_Z14_TUNE) += -mtune=z14
cflags-y += -Wa,-I$(srctree)/arch/$(ARCH)/include

3
arch/s390/kernel/setup.c
View File

@ -818,6 +818,9 @@ static int __init setup_hwcaps(void)
case 0x2965:
strcpy(elf_platform, "z13");
break;
case 0x3906:
strcpy(elf_platform, "z14");
break;
}
/*

3
arch/s390/tools/gen_facilities.c
View File

@ -53,6 +53,9 @@ static struct facility_def facility_defs[] = {
#endif
#ifdef CONFIG_HAVE_MARCH_Z13_FEATURES
53, /* load-and-zero-rightmost-byte, etc. */
#endif
#ifdef CONFIG_HAVE_MARCH_Z14_FEATURES
58, /* miscellaneous-instruction-extension 2 */
#endif
-1 /* END */
}