From b47208091291ea2990b69eb59c72d04c7161303e Mon Sep 17 00:00:00 2001 From: Florian Fainelli 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 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 --- 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 5562ee535db8..ac9bfad794eb 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 4bcbf002a8f7..46a24729fbba 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; } }