From b47208091291ea2990b69eb59c72d04c7161303e Mon Sep 17 00:00:00 2001
From: Florian Fainelli <f.fainelli@gmail.com>
Date: Tue, 9 Feb 2016 12:55:53 -0800
Subject: [PATCH] MIPS: BMIPS: BMIPS4380 and BMIPS5000 support RIXI

Make BMIPS4380 and BMIPS5000 advertise support for RIXI through
cpu_probe_broadcom(). bmips_cpu_setup() needs to be called shortly after that,
during prom_init() in order to enable the proper Broadcom-specific register to
turn on RIXI and the "rotr" instruction.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Cc: john@phrozen.org
Cc: cernekee@gmail.com
Cc: jon.fraser@broadcom.com
Cc: pgynther@google.com
Cc: paul.burton@imgtec.com
Cc: ddaney.cavm@gmail.com
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12507/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---
 arch/mips/Kconfig            | 2 ++
 arch/mips/kernel/cpu-probe.c | 3 ++-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 5562ee535db84..ac9bfad794ebf 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -1832,6 +1832,7 @@ config CPU_BMIPS4380
 	select MIPS_L1_CACHE_SHIFT_6
 	select SYS_SUPPORTS_SMP
 	select SYS_SUPPORTS_HOTPLUG_CPU
+	select CPU_HAS_RIXI
 
 config CPU_BMIPS5000
 	bool
@@ -1839,6 +1840,7 @@ config CPU_BMIPS5000
 	select MIPS_L1_CACHE_SHIFT_7
 	select SYS_SUPPORTS_SMP
 	select SYS_SUPPORTS_HOTPLUG_CPU
+	select CPU_HAS_RIXI
 
 config SYS_HAS_CPU_LOONGSON3
 	bool
diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c
index 4bcbf002a8f7e..46a24729fbba5 100644
--- a/arch/mips/kernel/cpu-probe.c
+++ b/arch/mips/kernel/cpu-probe.c
@@ -1468,6 +1468,7 @@ static inline void cpu_probe_broadcom(struct cpuinfo_mips *c, unsigned int cpu)
 			c->cputype = CPU_BMIPS4380;
 			__cpu_name[cpu] = "Broadcom BMIPS4380";
 			set_elf_platform(cpu, "bmips4380");
+			c->options |= MIPS_CPU_RIXI;
 		} else {
 			c->cputype = CPU_BMIPS4350;
 			__cpu_name[cpu] = "Broadcom BMIPS4350";
@@ -1483,7 +1484,7 @@ static inline void cpu_probe_broadcom(struct cpuinfo_mips *c, unsigned int cpu)
 		else
 			__cpu_name[cpu] = "Broadcom BMIPS5000";
 		set_elf_platform(cpu, "bmips5000");
-		c->options |= MIPS_CPU_ULRI;
+		c->options |= MIPS_CPU_ULRI | MIPS_CPU_RIXI;
 		break;
 	}
 }
-- 
2.39.5