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s390: add z13 code generation support

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Allow to generate code that only runs on z13 machines.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Martin Schwidefsky 2015-01-14 17:50:19 +01:00
parent e982506730
commit f8b2dcbd9e
4 changed files with 26 additions and 1 deletions
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18
arch/s390/Kconfig
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@ -185,6 +185,10 @@ config HAVE_MARCH_ZEC12_FEATURES
def_bool n
select HAVE_MARCH_Z196_FEATURES
config HAVE_MARCH_Z13_FEATURES
def_bool n
select HAVE_MARCH_ZEC12_FEATURES
choice
prompt "Processor type"
default MARCH_G5
@ -244,6 +248,14 @@ config MARCH_ZEC12
2827 series). The kernel will be slightly faster but will not work on
older machines.
config MARCH_Z13
bool "IBM z13"
select HAVE_MARCH_Z13_FEATURES if 64BIT
help
Select this to enable optimizations for IBM z13 (2964 series).
The kernel will be slightly faster but will not work on older
machines.
endchoice
config MARCH_G5_TUNE
@ -267,6 +279,9 @@ config MARCH_Z196_TUNE
config MARCH_ZEC12_TUNE
def_bool TUNE_ZEC12 || MARCH_ZEC12 && TUNE_DEFAULT
config MARCH_Z13_TUNE
def_bool TUNE_Z13 || MARCH_Z13 && TUNE_DEFAULT
choice
prompt "Tune code generation"
default TUNE_DEFAULT
@ -305,6 +320,9 @@ config TUNE_Z196
config TUNE_ZEC12
bool "IBM zBC12 and zEC12"
config TUNE_Z13
bool "IBM z13"
endchoice
config 64BIT

2
arch/s390/Makefile
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@ -42,6 +42,7 @@ 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
aflags-y += $(mflags-y)
cflags-y += $(mflags-y)
@ -53,6 +54,7 @@ cflags-$(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
#KBUILD_IMAGE is necessary for make rpm
KBUILD_IMAGE :=arch/s390/boot/image

4
arch/s390/kernel/head.S
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@ -436,7 +436,9 @@ ENTRY(startup_kdump)
# followed by the facility words.
#if defined(CONFIG_64BIT)
#if defined(CONFIG_MARCH_ZEC12)
#if defined(CONFIG_MARCH_Z13)
.long 3, 0xc100eff2, 0xf46ce800, 0x00400000
#elif defined(CONFIG_MARCH_ZEC12)
.long 3, 0xc100eff2, 0xf46ce800, 0x00400000
#elif defined(CONFIG_MARCH_Z196)
.long 2, 0xc100eff2, 0xf46c0000

3
arch/s390/kernel/setup.c
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@ -810,6 +810,9 @@ static void __init setup_hwcaps(void)
case 0x2828:
strcpy(elf_platform, "zEC12");
break;
case 0x2964:
strcpy(elf_platform, "z13");
break;
}
}