2 * This file is part of the coreboot project.
4 * Copyright (C) 2007 Advanced Micro Devices, Inc.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; version 2 of the License.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 #include <cpu/amd/quadcore.h>
24 #include <cpu/amd/model_10xxx_msr.h>
27 //called by bus_cpu_scan too
28 u32 read_nb_cfg_54(void)
31 msr = rdmsr(NB_CFG_MSR);
32 return ( ( msr.hi >> (54-32)) & 1);
35 static inline u32 get_initial_apicid(void)
37 return ((cpuid_ebx(1) >> 24) & 0xff);
40 //called by amd_siblings too
43 struct node_core_id get_node_core_id(u32 nb_cfg_54)
45 struct node_core_id id;
48 u32 ApicIdCoreIdSize = (cpuid_ecx(0x80000008)>>12 & 0xf);
49 if(ApicIdCoreIdSize) {
50 core_id_bits = ApicIdCoreIdSize;
52 core_id_bits = CORE_ID_BIT; //quad core
55 // get the apicid via cpuid(1) ebx[31:24]
57 // when NB_CFG[54] is set, nodeid = ebx[31:26], coreid = ebx[25:24]
58 id.coreid = (cpuid_ebx(1) >> 24) & 0xff;
59 id.nodeid = (id.coreid>>core_id_bits);
60 id.coreid &= ((1<<core_id_bits)-1);
62 // when NB_CFG[54] is clear, nodeid = ebx[29:24], coreid = ebx[31:30]
63 id.nodeid = (cpuid_ebx(1) >> 24) & 0xff;
64 id.coreid = (id.nodeid>>NODE_ID_BIT);
65 id.nodeid &= ((1<<NODE_ID_BIT)-1);
70 static inline u32 get_core_num(void)
72 return (cpuid_ecx(0x80000008) & 0xff);
75 static inline struct node_core_id get_node_core_id_x(void) {
77 return get_node_core_id( read_nb_cfg_54() );