| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2007 Advanced Micro Devices, Inc. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; version 2 of the License. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| |
| #include <arch/cpu.h> |
| #include <cpu/amd/multicore.h> |
| #ifdef __PRE_RAM__ |
| #include <cpu/amd/model_10xxx_msr.h> |
| #endif |
| |
| //called by bus_cpu_scan too |
| u32 read_nb_cfg_54(void) |
| { |
| msr_t msr; |
| msr = rdmsr(NB_CFG_MSR); |
| return ( ( msr.hi >> (54-32)) & 1); |
| } |
| |
| u32 get_initial_apicid(void) |
| { |
| return ((cpuid_ebx(1) >> 24) & 0xff); |
| } |
| |
| //called by amd_siblings too |
| #define CORE_ID_BIT 2 |
| #define NODE_ID_BIT 6 |
| struct node_core_id get_node_core_id(u32 nb_cfg_54) |
| { |
| struct node_core_id id; |
| u32 core_id_bits; |
| |
| u32 ApicIdCoreIdSize = (cpuid_ecx(0x80000008)>>12 & 0xf); |
| if(ApicIdCoreIdSize) { |
| core_id_bits = ApicIdCoreIdSize; |
| } else { |
| core_id_bits = CORE_ID_BIT; //quad core |
| } |
| |
| // get the apicid via cpuid(1) ebx[31:24] |
| if( nb_cfg_54) { |
| // when NB_CFG[54] is set, nodeid = ebx[31:26], coreid = ebx[25:24] |
| id.coreid = (cpuid_ebx(1) >> 24) & 0xff; |
| id.nodeid = (id.coreid>>core_id_bits); |
| id.coreid &= ((1<<core_id_bits)-1); |
| } else { |
| // when NB_CFG[54] is clear, nodeid = ebx[29:24], coreid = ebx[31:30] |
| id.nodeid = (cpuid_ebx(1) >> 24) & 0xff; |
| id.coreid = (id.nodeid>>NODE_ID_BIT); |
| id.nodeid &= ((1<<NODE_ID_BIT)-1); |
| } |
| return id; |
| } |
| |
| #ifdef UNUSED_CODE |
| static u32 get_core_num(void) |
| { |
| return (cpuid_ecx(0x80000008) & 0xff); |
| } |
| #endif |
| |
| struct node_core_id get_node_core_id_x(void) |
| { |
| return get_node_core_id(read_nb_cfg_54()); |
| } |
| |