diff options
Diffstat (limited to 'arch/sparc64/kernel/cpu.c')
| -rw-r--r-- | arch/sparc64/kernel/cpu.c | 48 |
1 files changed, 40 insertions, 8 deletions
diff --git a/arch/sparc64/kernel/cpu.c b/arch/sparc64/kernel/cpu.c index 7eb81d3954d9..e4eff878123d 100644 --- a/arch/sparc64/kernel/cpu.c +++ b/arch/sparc64/kernel/cpu.c @@ -1,7 +1,7 @@ /* cpu.c: Dinky routines to look for the kind of Sparc cpu * we are on. * - * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu) + * Copyright (C) 1996, 2007 David S. Miller (davem@davemloft.net) */ #include <linux/kernel.h> @@ -13,6 +13,7 @@ #include <asm/fpumacro.h> #include <asm/cpudata.h> #include <asm/spitfire.h> +#include <asm/prom.h> DEFINE_PER_CPU(cpuinfo_sparc, __cpu_data) = { 0 }; @@ -61,21 +62,52 @@ struct cpu_iu_info linux_sparc_chips[] = { #define NSPARCCHIPS ARRAY_SIZE(linux_sparc_chips) -char *sparc_cpu_type = "cpu-oops"; -char *sparc_fpu_type = "fpu-oops"; +char *sparc_cpu_type; +char *sparc_fpu_type; unsigned int fsr_storage; +static void __init sun4v_cpu_probe(void) +{ + struct device_node *dp; + const char *compat; + int len; + + dp = of_find_node_by_name(NULL, "cpu"); + if (!dp) + goto no_compat; + + compat = of_get_property(dp, "compatible", &len); + if (!compat) + goto no_compat; + + if (of_find_in_proplist(compat, "SUNW,UltraSPARC-T1", len)) { + sparc_cpu_type = "UltraSparc T1 (Niagara)"; + sparc_fpu_type = "UltraSparc T1 integrated FPU"; + } else if (of_find_in_proplist(compat, "SUNW,UltraSPARC-T2", len)) { + sparc_cpu_type = "UltraSparc T2 (Niagara2)"; + sparc_fpu_type = "UltraSparc T2 integrated FPU"; + } else + goto unknown; + + return; + +no_compat: + compat = "no property"; + +unknown: + printk(KERN_WARNING "CPU: Unknown sun4v cpu type [%s]\n", compat); + sparc_cpu_type = "Unknown SUN4V CPU"; + sparc_fpu_type = "Unknown SUN4V FPU"; +} + void __init cpu_probe(void) { unsigned long ver, fpu_vers, manuf, impl, fprs; int i; - if (tlb_type == hypervisor) { - sparc_cpu_type = "UltraSparc T1 (Niagara)"; - sparc_fpu_type = "UltraSparc T1 integrated FPU"; - return; - } + if (tlb_type == hypervisor) + return sun4v_cpu_probe(); fprs = fprs_read(); fprs_write(FPRS_FEF); |