| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <amdblocks/cpu.h> |
| #include <cpu/amd/cpuid.h> |
| #include <cpu/cpu.h> |
| #include <cpu/x86/msr.h> |
| #include <cpu/amd/msr.h> |
| #include <smbios.h> |
| #include <soc/iomap.h> |
| |
| int get_cpu_count(void) |
| { |
| return 1 + (cpuid_ecx(0x80000008) & 0xff); |
| } |
| |
| unsigned int smbios_processor_family(struct cpuid_result res) |
| { |
| return 0x6b; /* Zen */ |
| } |
| |
| unsigned int get_threads_per_core(void) |
| { |
| return 1 + ((cpuid_ebx(CPUID_EBX_CORE_ID) & CPUID_EBX_THREADS_MASK) |
| >> CPUID_EBX_THREADS_SHIFT); |
| } |
| |
| void set_cstate_io_addr(void) |
| { |
| msr_t cst_addr; |
| |
| cst_addr.hi = 0; |
| cst_addr.lo = ACPI_CPU_CONTROL; |
| wrmsr(MSR_CSTATE_ADDRESS, cst_addr); |
| } |