src/soc/amd/common/block/cpu/noncar/cpu.c

/* SPDX-License-Identifier: GPL-2.0-only */

#include <amdblocks/cpu.h>
#include <arch/cpuid.h>
#include <cpu/cpu.h>
#include <cpu/x86/msr.h>
#include <cpu/amd/cpuid.h>
#include <cpu/amd/msr.h>
#include <cpu/amd/mtrr.h>
#include <smbios.h>
#include <soc/iomap.h>
#include <types.h>

uint32_t get_pstate_0_reg(void)
{
	return 0;
}

uint32_t get_pstate_latency(void)
{
	return 0;
}

unsigned int smbios_processor_family(struct cpuid_result res)
{
	return 0x6b; /* Zen */
}

void set_cstate_io_addr(void)
{
	msr_t cst_addr;

	cst_addr.hi = 0;
	cst_addr.lo = ACPI_CSTATE_CONTROL;
	wrmsr(MSR_CSTATE_ADDRESS, cst_addr);
}

/* Number of most significant physical address bits reserved for secure memory encryption */
unsigned int get_reserved_phys_addr_bits(void)
{
	if (!(rdmsr(SYSCFG_MSR).raw & SYSCFG_MSR_SMEE))
		return 0;

	return (cpuid_ebx(CPUID_EBX_MEM_ENCRYPT) & CPUID_EBX_MEM_ENCRYPT_ADDR_BITS_MASK) >>
			CPUID_EBX_MEM_ENCRYPT_ADDR_BITS_SHIFT;
}