1 /* 2004.12 yhlu add dual core support */
4 #include "cpu/amd/model_fxx/model_fxx_msr.h"
6 static inline unsigned int read_nb_cfg_54(void)
9 msr = rdmsr(NB_CFG_MSR);
10 return ( ( msr.hi >> (54-32)) & 1);
18 static inline unsigned get_initial_apicid(void)
20 return ((cpuid_ebx(1) >> 24) & 0xf);
23 static inline struct node_core_id get_node_core_id(unsigned nb_cfg_54) {
24 struct node_core_id id;
25 // get the apicid via cpuid(1) ebx[27:24]
27 // when NB_CFG[54] is set, nodid = ebx[27:25], coreid = ebx[24]
28 id.coreid = (cpuid_ebx(1) >> 24) & 0xf;
29 id.nodeid = (id.coreid>>1);
34 // when NB_CFG[54] is clear, nodeid = ebx[26:24], coreid = ebx[27]
35 id.nodeid = (cpuid_ebx(1) >> 24) & 0xf;
36 id.coreid = (id.nodeid>>3);
42 static inline unsigned get_core_num(void)
44 return (cpuid_ecx(0x80000008) & 0xff);
47 static inline struct node_core_id get_node_core_id_x(void) {
48 return get_node_core_id( read_nb_cfg_54() );