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authorVasili Galka <vvv444@gmail.com>2014-06-10 16:14:56 +0300
committerSimon Glass <sjg@chromium.org>2014-06-23 15:37:23 -0600
commitdbb7234b2a5e7d2cdb6658156de8d2d5b54033d7 (patch)
tree0459fd1d2057ae96e4d27e340228f10891acf6a0 /arch/x86
parent038380597bc9b97378da2e18355cd7346d17b002 (diff)
x86: Enable 32-bit build using x86_64 multilib toolchain
Until now building the x86 arch boards required 32-bit toolchain. As many x86_64 toolchains come with 32-bit support (multilib) that's a good idea to enable build with such toolchains. The change required was to specify the usage of 32-bit explicitly to the compiler and the linker (-m32 and -m elf_i386 flags) and locate the right libgcc path. Signed-off-by: Vasili Galka <vvv444@gmail.com> Acked-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/config.mk5
-rw-r--r--arch/x86/cpu/config.mk2
2 files changed, 4 insertions, 3 deletions
diff --git a/arch/x86/config.mk b/arch/x86/config.mk
index 38cb7c93a5..3106079c85 100644
--- a/arch/x86/config.mk
+++ b/arch/x86/config.mk
@@ -16,17 +16,18 @@ PF_CPPFLAGS_X86 := $(call cc-option, -fno-toplevel-reorder, \
PLATFORM_CPPFLAGS += $(PF_CPPFLAGS_X86)
PLATFORM_CPPFLAGS += -fno-dwarf2-cfi-asm
PLATFORM_CPPFLAGS += -DREALMODE_BASE=0x7c0
+PLATFORM_CPPFLAGS += -march=i386 -m32
# Support generic board on x86
__HAVE_ARCH_GENERIC_BOARD := y
PLATFORM_RELFLAGS += -ffunction-sections -fvisibility=hidden
-PLATFORM_LDFLAGS += --emit-relocs -Bsymbolic -Bsymbolic-functions
+PLATFORM_LDFLAGS += --emit-relocs -Bsymbolic -Bsymbolic-functions -m elf_i386
LDFLAGS_FINAL += --gc-sections -pie
LDFLAGS_FINAL += --wrap=__divdi3 --wrap=__udivdi3
LDFLAGS_FINAL += --wrap=__moddi3 --wrap=__umoddi3
-export NORMAL_LIBGCC = $(shell $(CC) $(CFLAGS) -print-libgcc-file-name)
+export NORMAL_LIBGCC = $(shell $(CC) $(PLATFORM_CPPFLAGS) -print-libgcc-file-name)
CONFIG_USE_PRIVATE_LIBGCC := arch/x86/lib
diff --git a/arch/x86/cpu/config.mk b/arch/x86/cpu/config.mk
index c1568cacd0..4b2c873b0e 100644
--- a/arch/x86/cpu/config.mk
+++ b/arch/x86/cpu/config.mk
@@ -7,7 +7,7 @@
CROSS_COMPILE ?= i386-linux-
-PLATFORM_CPPFLAGS += -DCONFIG_X86 -D__I386__ -march=i386 -Werror
+PLATFORM_CPPFLAGS += -DCONFIG_X86 -D__I386__ -Werror
# DO NOT MODIFY THE FOLLOWING UNLESS YOU REALLY KNOW WHAT YOU ARE DOING!
LDPPFLAGS += -DRESET_SEG_START=0xffff0000