[Buildroot] [PATCH] Buildroot support for Intel X1000
Kinsella, Ray
ray.kinsella at intel.com
Mon Oct 19 11:02:52 UTC 2015
The Intel X1000 is the Pentium class microprocessor that ships with Galileo
Gen 1/2. This patch adds changes to arch and toolchain-wrapper to omit the lock
prefix for the X1000.
Signed-off-by: Ray Kinsella <ray.kinsella at intel.com>
---
arch/Config.in.x86 | 10 ++++++++++
toolchain/toolchain-wrapper.c | 3 +++
toolchain/toolchain-wrapper.mk | 4 ++++
3 files changed, 17 insertions(+)
diff --git a/arch/Config.in.x86 b/arch/Config.in.x86
index 43f6abc..28b8adf 100644
--- a/arch/Config.in.x86
+++ b/arch/Config.in.x86
@@ -34,6 +34,14 @@ config BR2_x86_i486
config BR2_x86_i586
bool "i586"
depends on !BR2_x86_64
+config BR2_x86_x1000
+ bool "x1000"
+ depends on !BR2_x86_64
+ help
+ The Intel X1000 is a Pentium class microprocessor in the Quark
+ (sub-Atom) Product Line. The X1000 has a bug on the lock prefix
+ requiring that prefix must be stripped at build time. See
+ https://en.wikipedia.org/wiki/Intel_Quark
config BR2_x86_i686
bool "i686"
depends on !BR2_x86_64
@@ -202,6 +210,7 @@ config BR2_ARCH
default "i386" if BR2_x86_i386
default "i486" if BR2_x86_i486
default "i586" if BR2_x86_i586
+ default "i586" if BR2_x86_x1000
default "i586" if BR2_x86_pentium_mmx
default "i586" if BR2_x86_geode
default "i586" if BR2_x86_c3
@@ -240,6 +249,7 @@ config BR2_GCC_TARGET_ARCH
default "i386" if BR2_x86_i386
default "i486" if BR2_x86_i486
default "i586" if BR2_x86_i586
+ default "i586" if BR2_x86_x1000
default "pentium-mmx" if BR2_x86_pentium_mmx
default "i686" if BR2_x86_i686
default "pentiumpro" if BR2_x86_pentiumpro
diff --git a/toolchain/toolchain-wrapper.c b/toolchain/toolchain-wrapper.c
index 16a3d78..f84bbe5 100644
--- a/toolchain/toolchain-wrapper.c
+++ b/toolchain/toolchain-wrapper.c
@@ -63,6 +63,9 @@ static char *predef_args[] = {
#ifdef BR_64
"-m64",
#endif
+#ifdef BR_OMIT_LOCK_PREFIX
+ "-Wa,-momit-lock-prefix=yes",
+#endif
#ifdef BR_BINFMT_FLAT
"-Wl,-elf2flt",
#endif
diff --git a/toolchain/toolchain-wrapper.mk b/toolchain/toolchain-wrapper.mk
index c78363a..eba2b38 100644
--- a/toolchain/toolchain-wrapper.mk
+++ b/toolchain/toolchain-wrapper.mk
@@ -20,6 +20,10 @@ ifeq ($(BR2_CCACHE),y)
TOOLCHAIN_WRAPPER_ARGS += -DBR_CCACHE
endif
+ifeq ($(BR2_x86_x1000),y)
+TOOLCHAIN_WRAPPER_ARGS += -DBR_OMIT_LOCK_PREFIX
+endif
+
ifeq ($(BR2_CCACHE_USE_BASEDIR),y)
TOOLCHAIN_WRAPPER_ARGS += -DBR_CCACHE_BASEDIR='"$(BASE_DIR)"'
endif
--
2.1.0
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