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| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2019-02-06 10:22:11 +0300 |
|---|---|---|
| committer | Heiko Carstens <heiko.carstens@de.ibm.com> | 2019-09-13 13:19:14 +0300 |
| commit | a0e2251132995b962281aa80ab54a9288f9e0b6b (patch) | |
| tree | bf23cbba43986c2be02acf7e3bd3152539231489 /arch/s390 | |
| parent | 3c2eb6b76cabb7d90834798d6455f7f3431fc989 (diff) | |
| download | linux-a0e2251132995b962281aa80ab54a9288f9e0b6b.tar.xz | |
s390: add support for IBM z15 machines
Add detection for machine types 0x8562 and 8x8561 and set the ELF platform
name to z15. Add the miscellaneous-instruction-extension 3 facility to
the list of facilities for z15.
And allow to generate code that only runs on a z15 machine.
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/Kconfig | 18 | ||||
| -rw-r--r-- | arch/s390/Makefile | 2 | ||||
| -rw-r--r-- | arch/s390/kernel/setup.c | 4 | ||||
| -rw-r--r-- | arch/s390/tools/gen_facilities.c | 3 |
4 files changed, 27 insertions, 0 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index 3289cc243d92..8c5b05d91106 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -237,6 +237,10 @@ config HAVE_MARCH_Z14_FEATURES def_bool n select HAVE_MARCH_Z13_FEATURES +config HAVE_MARCH_Z15_FEATURES + def_bool n + select HAVE_MARCH_Z14_FEATURES + choice prompt "Processor type" default MARCH_Z196 @@ -308,6 +312,14 @@ config MARCH_Z14 and 3906 series). The kernel will be slightly faster but will not work on older machines. +config MARCH_Z15 + bool "IBM z15" + select HAVE_MARCH_Z15_FEATURES + help + Select this to enable optimizations for IBM z15 (8562 + and 8561 series). The kernel will be slightly faster but will not + work on older machines. + endchoice config MARCH_Z900_TUNE @@ -334,6 +346,9 @@ config MARCH_Z13_TUNE config MARCH_Z14_TUNE def_bool TUNE_Z14 || MARCH_Z14 && TUNE_DEFAULT +config MARCH_Z15_TUNE + def_bool TUNE_Z15 || MARCH_Z15 && TUNE_DEFAULT + choice prompt "Tune code generation" default TUNE_DEFAULT @@ -378,6 +393,9 @@ config TUNE_Z13 config TUNE_Z14 bool "IBM z14" +config TUNE_Z15 + bool "IBM z15" + endchoice config 64BIT diff --git a/arch/s390/Makefile b/arch/s390/Makefile index e0bab7ed4123..478b645b20dd 100644 --- a/arch/s390/Makefile +++ b/arch/s390/Makefile @@ -45,6 +45,7 @@ mflags-$(CONFIG_MARCH_Z196) := -march=z196 mflags-$(CONFIG_MARCH_ZEC12) := -march=zEC12 mflags-$(CONFIG_MARCH_Z13) := -march=z13 mflags-$(CONFIG_MARCH_Z14) := -march=z14 +mflags-$(CONFIG_MARCH_Z15) := -march=z15 export CC_FLAGS_MARCH := $(mflags-y) @@ -59,6 +60,7 @@ cflags-$(CONFIG_MARCH_Z196_TUNE) += -mtune=z196 cflags-$(CONFIG_MARCH_ZEC12_TUNE) += -mtune=zEC12 cflags-$(CONFIG_MARCH_Z13_TUNE) += -mtune=z13 cflags-$(CONFIG_MARCH_Z14_TUNE) += -mtune=z14 +cflags-$(CONFIG_MARCH_Z15_TUNE) += -mtune=z15 cflags-y += -Wa,-I$(srctree)/arch/$(ARCH)/include diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c index 3e4b4a48a597..f63a9f378b37 100644 --- a/arch/s390/kernel/setup.c +++ b/arch/s390/kernel/setup.c @@ -981,6 +981,10 @@ static int __init setup_hwcaps(void) case 0x3907: strcpy(elf_platform, "z14"); break; + case 0x8561: + case 0x8562: + strcpy(elf_platform, "z15"); + break; } /* diff --git a/arch/s390/tools/gen_facilities.c b/arch/s390/tools/gen_facilities.c index cead9e0dcffb..61ce5b59b828 100644 --- a/arch/s390/tools/gen_facilities.c +++ b/arch/s390/tools/gen_facilities.c @@ -58,6 +58,9 @@ static struct facility_def facility_defs[] = { #ifdef CONFIG_HAVE_MARCH_Z14_FEATURES 58, /* miscellaneous-instruction-extension 2 */ #endif +#ifdef CONFIG_HAVE_MARCH_Z15_FEATURES + 61, /* miscellaneous-instruction-extension 3 */ +#endif -1 /* END */ } }, |