nb/intel/gm45: Use parallel MP init

This places the parallel mp ops up in the model_1067x dir and is
included from other Intel core2 CPU dirs that can use the same code.

Tested on Thinkpad X200 on which boot time is reduced by ~35ms.

Change-Id: Iac416f671407246ee223075eee1aff511e612889
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/23434
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/cpu/intel/model_1067x/Makefile.inc

@@ -1,4 +1,5 @@
 ramstage-y += model_1067x_init.c
+ramstage-$(CONFIG_PARALLEL_MP) += mp_init.c
 subdirs-y += ../../x86/name
 subdirs-y += ../common
 subdirs-$(CONFIG_SMM_TSEG) += ../smm/gen1

src/cpu/intel/model_1067x/model_1067x_init.c

@@ -21,12 +21,14 @@
 #include <cpu/cpu.h>
 #include <cpu/x86/mtrr.h>
 #include <cpu/x86/msr.h>
+#include <cpu/x86/mp.h>
 #include <cpu/x86/lapic.h>
 #include <cpu/intel/microcode.h>
 #include <cpu/intel/speedstep.h>
 #include <cpu/intel/hyperthreading.h>
 #include <cpu/x86/cache.h>
 #include <cpu/x86/name.h>
+#include <cpu/intel/smm/gen1/smi.h>
 #include <cpu/intel/common/common.h>
 #include "chip.h"
 
@@ -279,6 +281,7 @@ static void model_1067x_init(struct device *cpu)
 	x86_enable_cache();
 
 	/* Update the microcode */
+	if (!IS_ENABLED(CONFIG_PARALLEL_MP))
 		intel_update_microcode_from_cbfs();
 
 	/* Print processor name */
@@ -286,8 +289,10 @@ static void model_1067x_init(struct device *cpu)
 	printk(BIOS_INFO, "CPU: %s.\n", processor_name);
 
 	/* Setup MTRRs */
+	if (!IS_ENABLED(CONFIG_PARALLEL_MP)) {
 		x86_setup_mtrrs();
 		x86_mtrr_check();
+	}
 
 	/* Enable the local CPU APICs */
 	setup_lapic();
@@ -315,6 +320,7 @@ static void model_1067x_init(struct device *cpu)
 	configure_pic_thermal_sensors(tm2, quad);
 
 	/* Start up my CPU siblings */
+	if (!IS_ENABLED(CONFIG_PARALLEL_MP))
 		intel_sibling_init(cpu);
 }
 

src/cpu/intel/model_1067x/mp_init.c

@@ -0,0 +1,85 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2007-2009 coresystems GmbH
+ *               2012 secunet Security Networks AG
+ *
+ * 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 <console/console.h>
+#include <cpu/x86/mtrr.h>
+#include <cpu/x86/mp.h>
+#include <cpu/intel/microcode.h>
+#include <cpu/intel/smm/gen1/smi.h>
+#include <cpu/intel/common/common.h>
+
+/* Parallel MP initialization support. */
+static const void *microcode_patch;
+
+static void pre_mp_init(void)
+{
+	/* Setup MTRRs based on physical address size. */
+	x86_setup_mtrrs_with_detect();
+	x86_mtrr_check();
+}
+
+static int get_cpu_count(void)
+{
+	const struct cpuid_result cpuid1 = cpuid(1);
+	const char cores = (cpuid1.ebx >> 16) & 0xf;
+
+	printk(BIOS_DEBUG, "CPU has %u cores.\n", cores);
+
+	return cores;
+}
+
+/* the SMRR enable and lock bit need to be set in IA32_FEATURE_CONTROL
+   to enable SMRR so configure IA32_FEATURE_CONTROL early on */
+static void pre_mp_smm_init(void)
+{
+	smm_initialize();
+}
+
+static void per_cpu_smm_trigger(void)
+{
+	/* Relocate the SMM handler. */
+	smm_relocate();
+
+	/* After SMM relocation a 2nd microcode load is required. */
+	intel_microcode_load_unlocked(microcode_patch);
+}
+
+static void post_mp_init(void)
+{
+	/* Now that all APs have been relocated as well as the BSP let SMIs
+	 * start flowing. */
+	southbridge_smm_init();
+
+	/* Lock down the SMRAM space. */
+	smm_lock();
+}
+
+static const struct mp_ops mp_ops = {
+	.pre_mp_init = pre_mp_init,
+	.get_cpu_count = get_cpu_count,
+	.get_smm_info = smm_info,
+	.pre_mp_smm_init = pre_mp_smm_init,
+	.per_cpu_smm_trigger = per_cpu_smm_trigger,
+	.relocation_handler = smm_relocation_handler,
+	.post_mp_init = post_mp_init,
+};
+
+void bsp_init_and_start_aps(struct bus *cpu_bus)
+{
+	if (mp_init_with_smm(cpu_bus, &mp_ops))
+		printk(BIOS_ERR, "MP initialization failure.\n");
+}

src/cpu/intel/model_6fx/Makefile.inc

@@ -1,6 +1,7 @@
 ramstage-y += model_6fx_init.c
 subdirs-y += ../../x86/name
 subdirs-y += ../common
+ramstage-$(CONFIG_PARALLEL_MP) += ../model_1067x/mp_init.c
 subdirs-$(CONFIG_SMM_TSEG) += ../smm/gen1
 
 cpu_microcode_bins += 3rdparty/blobs/cpu/intel/model_6fx/microcode.bin

src/cpu/intel/model_6fx/model_6fx_init.c

@@ -133,6 +133,7 @@ static void model_6fx_init(struct device *cpu)
 	x86_enable_cache();
 
 	/* Update the microcode */
+	if (!IS_ENABLED(CONFIG_PARALLEL_MP))
 		intel_update_microcode_from_cbfs();
 
 	/* Print processor name */
@@ -140,8 +141,10 @@ static void model_6fx_init(struct device *cpu)
 	printk(BIOS_INFO, "CPU: %s.\n", processor_name);
 
 	/* Setup MTRRs */
+	if (!IS_ENABLED(CONFIG_PARALLEL_MP)) {
 		x86_setup_mtrrs();
 		x86_mtrr_check();
+	}
 
 	/* Setup Page Attribute Tables (PAT) */
 	// TODO set up PAT
@@ -162,6 +165,7 @@ static void model_6fx_init(struct device *cpu)
 	configure_pic_thermal_sensors();
 
 	/* Start up my CPU siblings */
+	if (!IS_ENABLED(CONFIG_PARALLEL_MP))
 		intel_sibling_init(cpu);
 }
 

src/northbridge/intel/gm45/Kconfig

@@ -29,6 +29,7 @@ config NORTHBRIDGE_SPECIFIC_OPTIONS # dummy
 	select POSTCAR_STAGE
 	select POSTCAR_CONSOLE
 	select SMM_TSEG
+	select PARALLEL_MP
 
 config CBFS_SIZE
 	hex

src/northbridge/intel/gm45/northbridge.c

@@ -230,26 +230,6 @@ void northbridge_write_smram(u8 smram)
 	pci_write_config8(dev, D0F0_SMRAM, smram);
 }
 
-/*
- * Really doesn't belong here but will go away with parallel mp init,
- * so let it be here for a while...
- */
-int cpu_get_apic_id_map(int *apic_id_map)
-{
-	unsigned int i;
-
-	/* Logical processors (threads) per core */
-	const struct cpuid_result cpuid1 = cpuid(1);
-	/* Read number of cores. */
-	const char cores = (cpuid1.ebx >> 16) & 0xf;
-
-	/* TODO in parallel MP cpuid(1).ebx */
-	for (i = 0; i < cores; i++)
-		apic_id_map[i] = i;
-
-	return cores;
-}
-
 static struct device_operations pci_domain_ops = {
 	.read_resources   = mch_domain_read_resources,
 	.set_resources    = mch_domain_set_resources,
@@ -264,7 +244,7 @@ static struct device_operations pci_domain_ops = {
 
 static void cpu_bus_init(struct device *dev)
 {
-	initialize_cpus(dev->link_list);
+	bsp_init_and_start_aps(dev->link_list);
 }
 
 static struct device_operations cpu_bus_ops = {

src/southbridge/intel/i82801ix/lpc.c

@@ -393,6 +393,7 @@ static void i82801ix_lock_smm(struct device *dev)
 	/* Don't allow evil boot loaders, kernels, or
 	 * userspace applications to deceive us:
 	 */
+	if (!IS_ENABLED(CONFIG_PARALLEL_MP))
 		smm_lock();
 
 #if TEST_SMM_FLASH_LOCKDOWN