ARC: Assume multiplier is always present

[ 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>

diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig
index e983f410135a97cbcef4a744320f47506c65685c..a5d8bef65911f09477187856833eb13b6a0f6bcd 100644 (file)
--- a/arch/arc/Kconfig
+++ b/arch/arc/Kconfig
@@ -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

diff --git a/arch/arc/Makefile b/arch/arc/Makefile
index fffaff9c7b2cc5c6f032c0694b864b2deb2a742a..8f8d53f08141db0f86571435816f16a41a332f67 100644 (file)
--- a/arch/arc/Makefile
+++ b/arch/arc/Makefile
@@ -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

diff --git a/arch/arc/kernel/setup.c b/arch/arc/kernel/setup.c
index 05131805aa3310027c2c159d0c109e615f02d87a..3013f3f82b95c5ecb0880e3f2e22a5d1b177a969 100644 (file)
--- a/arch/arc/kernel/setup.c
+++ b/arch/arc/kernel/setup.c
@@ -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",