Commit a3d4fb2d authored by Jayachandran C's avatar Jayachandran C Committed by Ralf Baechle

MIPS: Netlogic: XLP CPU support.

Add support for Netlogic's XLP MIPS SoC. This patch adds:
* XLP processor ID in cpu_probe.c and asm/cpu.h
* XLP case to asm/module.h
* CPU_XLP case to mm/tlbex.c
* minor change to r4k cache handling to ignore XLP secondary cache
* XLP cpu overrides to mach-netlogic/cpu-feature-overrides.h
Signed-off-by: default avatarJayachandran C <jayachandranc@netlogicmicro.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2966/Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent 0be3d9bb
......@@ -170,6 +170,7 @@
#define PRID_IMP_NETLOGIC_XLS408B 0x4e00
#define PRID_IMP_NETLOGIC_XLS404B 0x4f00
#define PRID_IMP_NETLOGIC_XLP832 0x1000
/*
* Definitions for 7:0 on legacy processors
*/
......@@ -263,7 +264,7 @@ enum cpu_type_enum {
*/
CPU_5KC, CPU_20KC, CPU_25KF, CPU_SB1, CPU_SB1A, CPU_LOONGSON2,
CPU_CAVIUM_OCTEON, CPU_CAVIUM_OCTEON_PLUS, CPU_CAVIUM_OCTEON2,
CPU_XLR,
CPU_XLR, CPU_XLP,
CPU_LAST
};
......
......@@ -24,23 +24,33 @@
#define cpu_has_llsc 1
#define cpu_has_vtag_icache 0
#define cpu_has_dc_aliases 0
#define cpu_has_ic_fills_f_dc 1
#define cpu_has_dsp 0
#define cpu_has_mipsmt 0
#define cpu_has_userlocal 0
#define cpu_icache_snoops_remote_store 1
#define cpu_has_64bits 1
#define cpu_has_mips32r1 1
#define cpu_has_mips32r2 0
#define cpu_has_mips64r1 1
#define cpu_has_mips64r2 0
#define cpu_has_inclusive_pcaches 0
#define cpu_dcache_line_size() 32
#define cpu_icache_line_size() 32
#if defined(CONFIG_CPU_XLR)
#define cpu_has_userlocal 0
#define cpu_has_dc_aliases 0
#define cpu_has_mips32r2 0
#define cpu_has_mips64r2 0
#elif defined(CONFIG_CPU_XLP)
#define cpu_has_userlocal 1
#define cpu_has_mips32r2 1
#define cpu_has_mips64r2 1
#define cpu_has_dc_aliases 1
#else
#error "Unknown Netlogic CPU"
#endif
#endif /* __ASM_MACH_NETLOGIC_CPU_FEATURE_OVERRIDES_H */
......@@ -120,6 +120,8 @@ search_module_dbetables(unsigned long addr)
#define MODULE_PROC_FAMILY "OCTEON "
#elif defined CONFIG_CPU_XLR
#define MODULE_PROC_FAMILY "XLR "
#elif defined CONFIG_CPU_XLP
#define MODULE_PROC_FAMILY "XLP "
#else
#error MODULE_PROC_FAMILY undefined for your processor configuration
#endif
......
......@@ -192,6 +192,7 @@ void __init check_wait(void)
case CPU_CAVIUM_OCTEON2:
case CPU_JZRISC:
case CPU_XLR:
case CPU_XLP:
cpu_wait = r4k_wait;
break;
......@@ -1024,6 +1025,11 @@ static inline void cpu_probe_netlogic(struct cpuinfo_mips *c, int cpu)
MIPS_CPU_LLSC);
switch (c->processor_id & 0xff00) {
case PRID_IMP_NETLOGIC_XLP832:
c->cputype = CPU_XLP;
__cpu_name[cpu] = "Netlogic XLP";
break;
case PRID_IMP_NETLOGIC_XLR732:
case PRID_IMP_NETLOGIC_XLR716:
case PRID_IMP_NETLOGIC_XLR532:
......@@ -1054,14 +1060,21 @@ static inline void cpu_probe_netlogic(struct cpuinfo_mips *c, int cpu)
break;
default:
printk(KERN_INFO "Unknown Netlogic chip id [%02x]!\n",
pr_info("Unknown Netlogic chip id [%02x]!\n",
c->processor_id);
c->cputype = CPU_XLR;
break;
}
c->isa_level = MIPS_CPU_ISA_M64R1;
c->tlbsize = ((read_c0_config1() >> 25) & 0x3f) + 1;
if (c->cputype == CPU_XLP) {
c->isa_level = MIPS_CPU_ISA_M64R2;
c->options |= (MIPS_CPU_FPU | MIPS_CPU_ULRI | MIPS_CPU_MCHECK);
/* This will be updated again after all threads are woken up */
c->tlbsize = ((read_c0_config6() >> 16) & 0xffff) + 1;
} else {
c->isa_level = MIPS_CPU_ISA_M64R1;
c->tlbsize = ((read_c0_config1() >> 25) & 0x3f) + 1;
}
}
#ifdef CONFIG_64BIT
......
......@@ -1235,6 +1235,9 @@ static void __cpuinit setup_scache(void)
loongson2_sc_init();
return;
#endif
case CPU_XLP:
/* don't need to worry about L2, fully coherent */
return;
default:
if (c->isa_level == MIPS_CPU_ISA_M32R1 ||
......
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