fsp_model_206ax: Use common i945-ivy tseg SMM init.

Change-Id: Iac390b565d709b11bc7a6631b11315994b6e2c3c
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/10466
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>

7 files changed, 47 insertions, 351 deletions

diff --git a/src/cpu/intel/fsp_model_206ax/Makefile.inc b/src/cpu/intel/fsp_model_206ax/Makefile.inc
index 4e0f95632a..83039bc3a3 100644
--- a/src/cpu/intel/fsp_model_206ax/Makefile.inc
+++ b/src/cpu/intel/fsp_model_206ax/Makefile.inc
@@ -1,5 +1,6 @@
 ramstage-y += model_206ax_init.c
 subdirs-y += ../../x86/name
+subdirs-y += ../smm/gen1
 
 ramstage-y += acpi.c
 
@@ -13,5 +14,3 @@ ifneq ($(wildcard $(shell readlink -f "$(top)/$(CONFIG_MICROCODE_INCLUDE_PATH)")
 CPPFLAGS_common += -I$(CONFIG_MICROCODE_INCLUDE_PATH)
 endif
 endif
-
-ramstage-$(CONFIG_HAVE_SMI_HANDLER) += smmrelocate.c
diff --git a/src/cpu/intel/fsp_model_206ax/model_206ax_init.c b/src/cpu/intel/fsp_model_206ax/model_206ax_init.c
index 7113f8c147..bcff1e842d 100644
--- a/src/cpu/intel/fsp_model_206ax/model_206ax_init.c
+++ b/src/cpu/intel/fsp_model_206ax/model_206ax_init.c
@@ -34,6 +34,9 @@
 #include <pc80/mc146818rtc.h>
 #include "model_206ax.h"
 #include "chip.h"
+#include <cpu/intel/smm/gen1/smi.h>
+
+#define CORE_THREAD_COUNT_MSR 0x35
 
 static void enable_vmx(void)
 {
@@ -286,6 +289,20 @@ static void configure_mca(void)
 		wrmsr(IA32_MC0_STATUS + (i * 4), msr);
 }
 
+int cpu_get_apic_id_map(int *apic_id_map)
+{
+	msr_t msr;
+	int num_cpus, i;
+
+	msr = rdmsr(CORE_THREAD_COUNT_MSR);
+	num_cpus = msr.lo & 0xffff;
+
+	for (i = 0; i < num_cpus && i < CONFIG_MAX_CPUS; i++)
+		apic_id_map[i] = i;
+
+	return num_cpus;
+}
+
 /*
  * Initialize any extra cores/threads in this package.
  */
diff --git a/src/cpu/intel/fsp_model_206ax/smmrelocate.c b/src/cpu/intel/fsp_model_206ax/smmrelocate.c
deleted file mode 100644
index 6b954d0781..0000000000
--- a/src/cpu/intel/fsp_model_206ax/smmrelocate.c
+++ /dev/null
@@ -1,333 +0,0 @@
-/*
- * This file is part of the coreboot project.
- *
- * Copyright (C) 2013 ChromeOS Authors
- *
- * 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.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc.
- */
-
-#include <types.h>
-#include <string.h>
-#include <device/device.h>
-#include <device/pci.h>
-#include <cpu/cpu.h>
-#include <cpu/x86/cache.h>
-#include <cpu/x86/msr.h>
-#include <cpu/x86/mtrr.h>
-#include <cpu/x86/smm.h>
-#include <console/console.h>
-#include <northbridge/intel/fsp_sandybridge/northbridge.h>
-#include <southbridge/intel/fsp_bd82x6x/pch.h>
-#include "model_206ax.h"
-
-#define EMRRphysBase_MSR 0x1f4
-#define EMRRphysMask_MSR 0x1f5
-#define UNCORE_EMRRphysBase_MSR 0x2f4
-#define UNCORE_EMRRphysMask_MSR 0x2f5
-
-#define CORE_THREAD_COUNT_MSR 0x35
-
-#define SMRR_SUPPORTED (1<<11)
-#define EMRR_SUPPORTED (1<<12)
-
-struct smm_relocation_params {
-	u32 smram_base;
-	u32 smram_size;
-	u32 ied_base;
-	u32 ied_size;
-	msr_t smrr_base;
-	msr_t smrr_mask;
-	msr_t emrr_base;
-	msr_t emrr_mask;
-	msr_t uncore_emrr_base;
-	msr_t uncore_emrr_mask;
-};
-
-/* This gets filled in and used during relocation. */
-static struct smm_relocation_params smm_reloc_params;
-
-static inline void write_smrr(struct smm_relocation_params *relo_params)
-{
-	printk(BIOS_DEBUG, "Writing SMRR. base = 0x%08x, mask=0x%08x\n",
-	       relo_params->smrr_base.lo, relo_params->smrr_mask.lo);
-	wrmsr(SMRRphysBase_MSR, relo_params->smrr_base);
-	wrmsr(SMRRphysMask_MSR, relo_params->smrr_mask);
-}
-
-static inline void write_emrr(struct smm_relocation_params *relo_params)
-{
-	printk(BIOS_DEBUG, "Writing EMRR. base = 0x%08x, mask=0x%08x\n",
-	       relo_params->emrr_base.lo, relo_params->emrr_mask.lo);
-	wrmsr(EMRRphysBase_MSR, relo_params->emrr_base);
-	wrmsr(EMRRphysMask_MSR, relo_params->emrr_mask);
-}
-
-static inline void write_uncore_emrr(struct smm_relocation_params *relo_params)
-{
-	printk(BIOS_DEBUG,
-	       "Writing UNCORE_EMRR. base = 0x%08x, mask=0x%08x\n",
-	       relo_params->uncore_emrr_base.lo,
-	       relo_params->uncore_emrr_mask.lo);
-	wrmsr(UNCORE_EMRRphysBase_MSR, relo_params->uncore_emrr_base);
-	wrmsr(UNCORE_EMRRphysMask_MSR, relo_params->uncore_emrr_mask);
-}
-
-/* The relocation work is actually performed in SMM context, but the code
- * resides in the ramstage module. This occurs by trampolining from the default
- * SMRAM entry point to here. */
-static void asmlinkage cpu_smm_do_relocation(void *arg)
-{
-	em64t101_smm_state_save_area_t *save_state;
-	msr_t mtrr_cap;
-	struct smm_relocation_params *relo_params;
-	const struct smm_module_params *p;
-	const struct smm_runtime *runtime;
-	int cpu;
-
-	p = arg;
-	runtime = p->runtime;
-	relo_params = p->arg;
-	cpu = p->cpu;
-
-	if (cpu >= CONFIG_MAX_CPUS) {
-		printk(BIOS_CRIT,
-		       "Invalid CPU number assigned in SMM stub: %d\n", cpu);
-		return;
-	}
-
-	printk(BIOS_DEBUG, "In relocation handler: cpu %d\n", cpu);
-
-	/* All threads need to set IEDBASE and SMBASE in the save state area.
-	 * Since one thread runs at a time during the relocation the save state
-	 * is the same for all cpus. */
-	save_state = (void *)(runtime->smbase + SMM_DEFAULT_SIZE -
-                              runtime->save_state_size);
-
-	/* The relocated handler runs with all CPUs concurrently. Therefore
-	 * stagger the entry points adjusting SMBASE downwards by save state
-	 * size * CPU num. */
-	save_state->smbase = relo_params->smram_base -
-	                     cpu * runtime->save_state_size;
-	save_state->iedbase = relo_params->ied_base;
-
-	printk(BIOS_DEBUG, "New SMBASE=0x%08x IEDBASE=0x%08x @ %p\n",
-	       save_state->smbase, save_state->iedbase, save_state);
-
-	/* Write EMRR and SMRR MSRs based on indicated support. */
-	mtrr_cap = rdmsr(MTRRcap_MSR);
-	if (mtrr_cap.lo & SMRR_SUPPORTED)
-		write_smrr(relo_params);
-
-	if (mtrr_cap.lo & EMRR_SUPPORTED) {
-		write_emrr(relo_params);
-		/* UNCORE_EMRR msrs are package level. Therefore, only
-		 * configure these MSRs on the BSP. */
-		if (cpu == 0)
-			write_uncore_emrr(relo_params);
-	}
-
-	southbridge_clear_smi_status();
-}
-
-static u32 northbridge_get_base_reg(device_t dev, int reg)
-{
-	u32 value;
-
-	value = pci_read_config32(dev, reg);
-	/* Base registers are at 1MiB granularity. */
-	value &= ~((1 << 20) - 1);
-	return value;
-}
-
-static void fill_in_relocation_params(device_t dev,
-                                      struct smm_relocation_params *params)
-{
-	u32 tseg_size;
-	u32 tsegmb;
-	u32 bgsm;
-	u32 emrr_base;
-	u32 emrr_size;
-	int phys_bits;
-	/* All range registers are aligned to 4KiB */
-	const u32 rmask = ~((1 << 12) - 1);
-
-	/* Some of the range registers are dependent on the number of physical
-	 * address bits supported. */
-	phys_bits = cpuid_eax(0x80000008) & 0xff;
-
-	/* The range bounded by the TSEGMB and BGSM registers encompasses the
-	 * SMRAM range as well as the IED range. However, the SMRAM available
-	 * to the handler is 4MiB since the IEDRAM lives TSEGMB + 4MiB.
-	 */
-	tsegmb = northbridge_get_base_reg(dev, TSEG);
-	bgsm = northbridge_get_base_reg(dev, BGSM);
-	tseg_size = bgsm - tsegmb;
-
-	params->smram_base = tsegmb;
-	params->smram_size = 4 << 20;
-	params->ied_base = tsegmb + params->smram_size;
-	params->ied_size = tseg_size - params->smram_size;
-
-	/* SMRR has 32-bits of valid address aligned to 4KiB. */
-	params->smrr_base.lo = (params->smram_base & rmask) | MTRR_TYPE_WRBACK;
-	params->smrr_base.hi = 0;
-	params->smrr_mask.lo = (~(tseg_size - 1) & rmask) | MTRRphysMaskValid;
-	params->smrr_mask.hi = 0;
-
-	/* The EMRR and UNCORE_EMRR are at IEDBASE + 2MiB */
-	emrr_base = (params->ied_base + (2 << 20)) & rmask;
-	emrr_size = params->ied_size - (2 << 20);
-
-	/* EMRR has 46 bits of valid address aligned to 4KiB. It's dependent
-	 * on the number of physical address bits supported. */
-	params->emrr_base.lo = emrr_base | MTRR_TYPE_WRBACK;
-	params->emrr_base.hi = 0;
-	params->emrr_mask.lo = (~(emrr_size - 1) & rmask) | MTRRphysMaskValid;
-	params->emrr_mask.hi = (1 << (phys_bits - 32)) - 1;
-
-	/* UNCORE_EMRR has 39 bits of valid address aligned to 4KiB. */
-	params->uncore_emrr_base.lo = emrr_base;
-	params->uncore_emrr_base.hi = 0;
-	params->uncore_emrr_mask.lo = (~(emrr_size - 1) & rmask) |
-	                              MTRRphysMaskValid;
-	params->uncore_emrr_mask.hi = (1 << (39 - 32)) - 1;
-}
-
-static int install_relocation_handler(int num_cpus,
-                                      struct smm_relocation_params *relo_params)
-{
-	/* The default SMM entry happens serially at the default location.
-	 * Therefore, there is only 1 concurrent save state area. Set the
-	 * stack size to the save state size, and call into the
-	 * do_relocation handler. */
-	int save_state_size = sizeof(em64t101_smm_state_save_area_t);
-	struct smm_loader_params smm_params = {
-		.per_cpu_stack_size = save_state_size,
-		.num_concurrent_stacks = num_cpus,
-		.per_cpu_save_state_size = save_state_size,
-		.num_concurrent_save_states = 1,
-		.handler = &cpu_smm_do_relocation,
-		.handler_arg = (void *)relo_params,
-	};
-
-	return smm_setup_relocation_handler(&smm_params);
-}
-
-static void setup_ied_area(struct smm_relocation_params *params)
-{
-	char *ied_base;
-
-	struct ied_header ied = {
-		.signature = "INTEL RSVD",
-		.size = params->ied_size,
-		.reserved = {0},
-	};
-
-	ied_base = (void *)params->ied_base;
-
-	/* Place IED header at IEDBASE. */
-	memcpy(ied_base, &ied, sizeof(ied));
-
-	/* Zero out 32KiB at IEDBASE + 1MiB */
-	memset(ied_base + (1 << 20), 0, (32 << 10));
-}
-
-static int install_permanent_handler(int num_cpus,
-                                     struct smm_relocation_params *relo_params)
-{
-	/* There are num_cpus concurrent stacks and num_cpus concurrent save
-	 * state areas. Lastly, set the stack size to the save state size. */
-	int save_state_size = sizeof(em64t101_smm_state_save_area_t);
-	struct smm_loader_params smm_params = {
-		.per_cpu_stack_size = save_state_size,
-		.num_concurrent_stacks = num_cpus,
-		.per_cpu_save_state_size = save_state_size,
-		.num_concurrent_save_states = num_cpus,
-	};
-
-	printk(BIOS_DEBUG, "Installing SMM handler to 0x%08x\n",
-	       relo_params->smram_base);
-	return smm_load_module((void *)relo_params->smram_base,
-	                       relo_params->smram_size, &smm_params);
-}
-
-static int cpu_smm_setup(void)
-{
-	device_t dev;
-	int num_cpus;
-	msr_t msr;
-
-	printk(BIOS_DEBUG, "Setting up SMI for CPU\n");
-
-	dev = dev_find_slot(0, PCI_DEVFN(0, 0));
-
-	fill_in_relocation_params(dev, &smm_reloc_params);
-
-	setup_ied_area(&smm_reloc_params);
-
-	msr = rdmsr(CORE_THREAD_COUNT_MSR);
-	num_cpus = msr.lo & 0xffff;
-	if (num_cpus > CONFIG_MAX_CPUS) {
-		printk(BIOS_CRIT,
-		       "Error: Hardware CPUs (%d) > MAX_CPUS (%d)\n",
-		       num_cpus, CONFIG_MAX_CPUS);
-	}
-
-	if (install_relocation_handler(num_cpus, &smm_reloc_params)) {
-		printk(BIOS_CRIT, "SMM Relocation handler install failed.\n");
-		return -1;
-	}
-
-	if (install_permanent_handler(num_cpus, &smm_reloc_params)) {
-		printk(BIOS_CRIT, "SMM Permanent handler install failed.\n");
-		return -1;
-	}
-
-	/* Ensure the SMM handlers hit DRAM before performing first SMI. */
-	/* TODO(adurbin): Is this really needed? */
-	wbinvd();
-
-	return 0;
-}
-
-void smm_init(void)
-{
-	/* Return early if CPU SMM setup failed. */
-	if (cpu_smm_setup())
-		return;
-
-	southbridge_smm_init();
-
-	/* Initiate first SMI to kick off SMM-context relocation. Note: this
-	 * SMI being triggered here queues up an SMI in the APs which are in
-	 * wait-for-SIPI state. Once an AP gets an SIPI it will service the SMI
-	 * at the SMM_DEFAULT_BASE before jumping to startup vector. */
-	southbridge_trigger_smi();
-
-	printk(BIOS_DEBUG, "Relocation complete.\n");
-
-	/* Lock down the SMRAM space. */
-	smm_lock();
-}
-
-void smm_lock(void)
-{
-	/* LOCK the SMM memory window and enable normal SMM.
-	 * After running this function, only a full reset can
-	 * make the SMM registers writable again.
-	 */
-	printk(BIOS_DEBUG, "Locking SMM.\n");
-	pci_write_config8(dev_find_slot(0, PCI_DEVFN(0, 0)), SMRAM,
-			D_LCK | G_SMRAME | C_BASE_SEG);
-}
diff --git a/src/northbridge/intel/fsp_sandybridge/northbridge.c b/src/northbridge/intel/fsp_sandybridge/northbridge.c
index 6f1ce2f732..3f982c4a17 100644
--- a/src/northbridge/intel/fsp_sandybridge/northbridge.c
+++ b/src/northbridge/intel/fsp_sandybridge/northbridge.c
@@ -37,6 +37,7 @@
 #include "chip.h"
 #include "northbridge.h"
 #include <fsp_util.h>
+#include <cpu/intel/smm/gen1/smi.h>
 
 static int bridge_revision_id = -1;
 
@@ -318,6 +319,33 @@ static void northbridge_init(struct device *dev)
 	printk(BIOS_DEBUG, "Set BIOS_RESET_CPL\n");
 }
 
+static u32 northbridge_get_base_reg(device_t dev, int reg)
+{
+	u32 value;
+
+	value = pci_read_config32(dev, reg);
+	/* Base registers are at 1MiB granularity. */
+	value &= ~((1 << 20) - 1);
+	return value;
+}
+
+void
+northbridge_get_tseg_base_and_size(u32 *tsegmb, u32 *tseg_size)
+{
+	device_t dev;
+	u32 bgsm;
+	dev = dev_find_slot(0, PCI_DEVFN(0, 0));
+
+	*tsegmb = northbridge_get_base_reg(dev, TSEG);
+	bgsm = northbridge_get_base_reg(dev, BGSM);
+	*tseg_size = bgsm - *tsegmb;
+}
+
+void northbridge_write_smram(u8 smram)
+{
+	pci_write_config8(dev_find_slot(0, PCI_DEVFN(0, 0)), SMRAM, smram);
+}
+
 static struct pci_operations intel_pci_ops = {
 	.set_subsystem    = intel_set_subsystem,
 };
diff --git a/src/northbridge/intel/fsp_sandybridge/northbridge.h b/src/northbridge/intel/fsp_sandybridge/northbridge.h
index 6d4f83c5b6..4861254902 100644
--- a/src/northbridge/intel/fsp_sandybridge/northbridge.h
+++ b/src/northbridge/intel/fsp_sandybridge/northbridge.h
@@ -94,11 +94,6 @@
 
 #define LAC		0x87	/* Legacy Access Control */
 #define SMRAM		0x88	/* System Management RAM Control */
-#define  D_OPEN		(1 << 6)
-#define  D_CLS		(1 << 5)
-#define  D_LCK		(1 << 4)
-#define  G_SMRAME	(1 << 3)
-#define  C_BASE_SEG	((0 << 2) | (1 << 1) | (0 << 0))
 
 #define TOM		0xa0
 #define TOUUD		0xa8	/* Top of Upper Usable DRAM */
@@ -203,12 +198,6 @@
 #ifndef __ASSEMBLER__
 static inline void barrier(void) { asm("" ::: "memory"); }
 
-struct ied_header {
-	char signature[10];
-	u32 size;
-	u8 reserved[34];
-} __attribute__ ((packed));
-
 #define PCI_DEVICE_ID_SB 0x0104
 #define PCI_DEVICE_ID_IB 0x0154
 
diff --git a/src/southbridge/intel/fsp_bd82x6x/pch.h b/src/southbridge/intel/fsp_bd82x6x/pch.h
index 10e536e87f..9e3b4da1e9 100644
--- a/src/southbridge/intel/fsp_bd82x6x/pch.h
+++ b/src/southbridge/intel/fsp_bd82x6x/pch.h
@@ -64,11 +64,6 @@ void intel_pch_finalize_smm(void);
 #if !defined(__ASSEMBLER__) && !defined(__ROMCC__)
 #if !defined(__PRE_RAM__) && !defined(__SMM__)
 #include "chip.h"
-/* These helpers are for performing SMM relocation. */
-void southbridge_smm_init(void);
-void southbridge_trigger_smi(void);
-void southbridge_clear_smi_status(void);
-
 int pch_silicon_revision(void);
 int pch_silicon_type(void);
 int pch_silicon_supported(int type, int rev);
diff --git a/src/southbridge/intel/fsp_bd82x6x/smi.c b/src/southbridge/intel/fsp_bd82x6x/smi.c
index 7151340965..2b4d4ec8fd 100644
--- a/src/southbridge/intel/fsp_bd82x6x/smi.c
+++ b/src/southbridge/intel/fsp_bd82x6x/smi.c
@@ -27,6 +27,7 @@
 #include <cpu/x86/cache.h>
 #include <cpu/x86/smm.h>
 #include <string.h>
+#include <cpu/intel/smm/gen1/smi.h>
 #include "pch.h"
 
 /* While we read PMBASE dynamically in case it changed, let's