| /* |
| * This file is part of the coreboot project. |
| * |
| * 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. |
| */ |
| |
| #include <smp/node.h> |
| #include <cpu/x86/msr.h> |
| #include <cpu/x86/lapic_def.h> |
| |
| #if IS_ENABLED(CONFIG_SMP) |
| int boot_cpu(void) |
| { |
| int bsp; |
| msr_t msr; |
| msr = rdmsr(LAPIC_BASE_MSR); |
| bsp = !!(msr.lo & (1 << 8)); |
| return bsp; |
| } |
| #endif |