#ifdef CONFIG_X86_32
/*
* General Systems BIOSen alias the cpu frequency registers
- * of the Elan at 0x000df000. Unfortuantly, one of the Linux
+ * of the Elan at 0x000df000. Unfortunately, one of the Linux
* drivers subsequently pokes it, and changes the CPU speed.
* Workaround : Remove the unneeded alias.
*/
u32 eax, ebx, ecx, edx;
cpuid(0x8000001e, &eax, &ebx, &ecx, &edx);
- nodes_per_socket = ((ecx >> 8) & 7) + 1;
node_id = ecx & 7;
/* get compute unit information */
u64 value;
rdmsrl(MSR_FAM10H_NODE_ID, value);
- nodes_per_socket = ((value >> 3) & 7) + 1;
node_id = value & 7;
} else
return;
if (cpu_has(c, X86_FEATURE_MWAITX))
use_mwaitx_delay();
+
+ if (boot_cpu_has(X86_FEATURE_TOPOEXT)) {
+ u32 ecx;
+
+ ecx = cpuid_ecx(0x8000001e);
+ nodes_per_socket = ((ecx >> 8) & 7) + 1;
+ } else if (boot_cpu_has(X86_FEATURE_NODEID_MSR)) {
+ u64 value;
+
+ rdmsrl(MSR_FAM10H_NODE_ID, value);
+ nodes_per_socket = ((value >> 3) & 7) + 1;
+ }
}
static void early_init_amd(struct cpuinfo_x86 *c)
set_sched_clock_stable();
}
+ /* Bit 12 of 8000_0007 edx is accumulated power mechanism. */
+ if (c->x86_power & BIT(12))
+ set_cpu_cap(c, X86_FEATURE_ACC_POWER);
+
#ifdef CONFIG_X86_64
set_cpu_cap(c, X86_FEATURE_SYSCALL32);
#else