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/*
* 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/quadcore.h>
#ifdef __ROMCC__
#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);
}
static 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;
}
static u32 get_core_num(void)
{
return (cpuid_ecx(0x80000008) & 0xff);
}
static struct node_core_id get_node_core_id_x(void)
{
return get_node_core_id(read_nb_cfg_54());
}
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