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authorMartin Schwidefsky <schwidefsky@de.ibm.com>2015-01-14 17:50:19 +0100
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2015-01-22 12:15:57 +0100
commitf8b2dcbd9e6d1479b9b5a9e9e78bbaf783bde819 (patch)
tree0752b6462bcee89772569a8fff515863ecec6521 /arch
parente982506730815f9e3bcd148d06b5b6d778d9c46c (diff)
downloadlinux-f8b2dcbd9e6d1479b9b5a9e9e78bbaf783bde819.tar.gz
s390: add z13 code generation support
Allow to generate code that only runs on z13 machines. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/s390/Kconfig18
-rw-r--r--arch/s390/Makefile2
-rw-r--r--arch/s390/kernel/head.S4
-rw-r--r--arch/s390/kernel/setup.c3
4 files changed, 26 insertions, 1 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index e79c3eab40b9..06c6d9ab5a8d 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -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
diff --git a/arch/s390/Makefile b/arch/s390/Makefile
index 878e67973151..e742ec5de9a7 100644
--- a/arch/s390/Makefile
+++ b/arch/s390/Makefile
@@ -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
diff --git a/arch/s390/kernel/head.S b/arch/s390/kernel/head.S
index d62eee11f0b5..132f4c9ade60 100644
--- a/arch/s390/kernel/head.S
+++ b/arch/s390/kernel/head.S
@@ -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
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index 4e532c67832f..bfac77ada4f2 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -810,6 +810,9 @@ static void __init setup_hwcaps(void)
case 0x2828:
strcpy(elf_platform, "zEC12");
break;
+ case 0x2964:
+ strcpy(elf_platform, "z13");
+ break;
}
}