| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2013 Google Inc. |
| * Copyright (C) 2015-2016 Intel Corp. |
| * |
| * 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 <stdlib.h> |
| #include <arch/cpu.h> |
| #include <arch/acpi.h> |
| #include <console/console.h> |
| #include <cpu/intel/microcode.h> |
| #include <cpu/x86/cr.h> |
| #include <cpu/x86/msr.h> |
| #include <device/device.h> |
| #include <device/pci_def.h> |
| #include <device/pci_ops.h> |
| #include <romstage_handoff.h> |
| #include <soc/lpc.h> |
| #include <soc/msr.h> |
| #include <soc/pattrs.h> |
| #include <soc/pci_devs.h> |
| #include <soc/ramstage.h> |
| |
| /* Global PATTRS */ |
| DEFINE_PATTRS; |
| |
| #define SHOW_PATTRS 1 |
| |
| static void detect_num_cpus(struct pattrs *attrs) |
| { |
| msr_t core_thread_count = rdmsr(MSR_CORE_THREAD_COUNT); |
| attrs->num_cpus = core_thread_count.lo & 0xffff; |
| } |
| |
| static inline void fill_in_msr(msr_t *msr, int idx) |
| { |
| *msr = rdmsr(idx); |
| if (SHOW_PATTRS) { |
| printk(BIOS_DEBUG, "msr(%x) = %08x%08x\n", |
| idx, msr->hi, msr->lo); |
| } |
| } |
| |
| static const char *stepping_str[] = { |
| "U0", "V1", "V2", "Y0" |
| }; |
| |
| static void fill_in_pattrs(void) |
| { |
| device_t dev; |
| struct pattrs *attrs = (struct pattrs *)pattrs_get(); |
| |
| attrs->cpuid = cpuid_eax(1); |
| attrs->stepping = (attrs->cpuid & 0x0F) - 1; |
| dev = dev_find_slot(0, PCI_DEVFN(LPC_DEV, LPC_FUNC)); |
| attrs->revid = pci_read_config8(dev, REVID); |
| attrs->microcode_patch = intel_microcode_find(); |
| attrs->address_bits = cpuid_eax(0x80000008) & 0xff; |
| detect_num_cpus(attrs); |
| |
| if (SHOW_PATTRS) { |
| printk(BIOS_DEBUG, "CPUID: %08x\n", attrs->cpuid); |
| printk(BIOS_DEBUG, "Cores: %d\n", attrs->num_cpus); |
| printk(BIOS_DEBUG, "Stepping: %s\n", (attrs->stepping >= ARRAY_SIZE(stepping_str)) |
| ? "??" : stepping_str[attrs->stepping]); |
| printk(BIOS_DEBUG, "Revision ID: %02x\n", attrs->revid); |
| } |
| |
| fill_in_msr(&attrs->platform_id, MSR_IA32_PLATFORM_ID); |
| fill_in_msr(&attrs->platform_info, MSR_PLATFORM_INFO); |
| } |
| |
| void broadwell_de_init_pre_device(void) |
| { |
| fill_in_pattrs(); |
| } |