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ARC: Assume multiplier is always present

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[ Upstream commit 0eca6fdb3193410fbe66b6f064431cc394513e82 ]

It is unlikely that designs running Linux will not have multiplier.
Further the current support is not complete as tool don't generate a
multilib w/o multiplier.

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Vineet Gupta 2016-02-16 09:42:57 +05:30 • committed by Greg Kroah-Hartman
parent b3e8f6bc2f
commit a414c47457
3 changed files with 0 additions and 14 deletions
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8
arch/arc/Kconfig
View file

@ -278,14 +278,6 @@ config ARC_DCCM_BASE
default "0xA0000000"
depends on ARC_HAS_DCCM
config ARC_HAS_HW_MPY
bool "Use Hardware Multiplier (Normal or Faster XMAC)"
default y
help
Influences how gcc generates code for MPY operations.
If enabled, MPYxx insns are generated, provided by Standard/XMAC
Multipler. Otherwise software multipy lib is used
choice
prompt "MMU Version"
default ARC_MMU_V3 if ARC_CPU_770

4
arch/arc/Makefile
View file

@ -72,10 +72,6 @@ ldflags-$(CONFIG_CPU_BIG_ENDIAN) += -EB
# --build-id w/o "-marclinux". Default arc-elf32-ld is OK
ldflags-$(upto_gcc44) += -marclinux
ifndef CONFIG_ARC_HAS_HW_MPY
cflags-y += -mno-mpy
endif
LIBGCC := $(shell $(CC) $(cflags-y) --print-libgcc-file-name)
# Modules with short calls might break for calls into builtin-kernel

2
arch/arc/kernel/setup.c
View file

@ -232,8 +232,6 @@ static char *arc_cpu_mumbojumbo(int cpu_id, char *buf, int len)
n += scnprintf(buf + n, len - n, "mpy[opt %d] ", opt);
}
n += scnprintf(buf + n, len - n, "%s",
IS_USED_CFG(CONFIG_ARC_HAS_HW_MPY));
}
n += scnprintf(buf + n, len - n, "%s%s%s%s%s%s%s%s\n",