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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>
hifive-unleashed-5.1
Florian Fainelli 2016-02-09 12:55:53 -08:00 committed by Ralf Baechle
parent 2e274768e4
commit b472080912
2 changed files with 4 additions and 1 deletions
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2
arch/mips/Kconfig
View File

@ -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

3
arch/mips/kernel/cpu-probe.c
View File

@ -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;
}
}