model_2065x: Use common i945-ivy TSEG SMM init.

Change-Id: I0302cbaeb45a55a4cfee94692eb7372f2b6b206d
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/10468
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>

9 files changed, 53 insertions, 312 deletions

diff --git a/src/cpu/intel/model_2065x/Makefile.inc b/src/cpu/intel/model_2065x/Makefile.inc
index 77b2f02b2db8..3da26dd33ba5 100644
--- a/src/cpu/intel/model_2065x/Makefile.inc
+++ b/src/cpu/intel/model_2065x/Makefile.inc
@@ -7,7 +7,7 @@ subdirs-y += ../../x86/tsc
 subdirs-y += ../../intel/turbo
 subdirs-y += ../../intel/microcode
 subdirs-y += ../../x86/smm
-
+subdirs-y += ../smm/gen1
 
 ramstage-y += tsc_freq.c
 romstage-y += tsc_freq.c
@@ -20,5 +20,3 @@ smm-$(CONFIG_HAVE_SMI_HANDLER) += finalize.c
 cpu_microcode-$(CONFIG_CPU_MICROCODE_CBFS_GENERATE)  += microcode_blob.c
 
 cpu_incs += $(src)/cpu/intel/model_2065x/cache_as_ram.inc
-
-ramstage-$(CONFIG_HAVE_SMI_HANDLER) += smmrelocate.c
diff --git a/src/cpu/intel/model_2065x/model_2065x_init.c b/src/cpu/intel/model_2065x/model_2065x_init.c
index 8e6970ee2305..991bab89e0b8 100644
--- a/src/cpu/intel/model_2065x/model_2065x_init.c
+++ b/src/cpu/intel/model_2065x/model_2065x_init.c
@@ -35,6 +35,7 @@
 #include <pc80/mc146818rtc.h>
 #include "model_2065x.h"
 #include "chip.h"
+#include <cpu/intel/smm/gen1/smi.h>
 
 /*
  * List of supported C-states in this processor
@@ -113,6 +114,28 @@ static acpi_cstate_t cstate_map[] = {
 	{ 0 }
 };
 
+int cpu_get_apic_id_map(int *apic_id_map)
+{
+	int i;
+	struct cpuid_result result;
+	unsigned threads_per_package, threads_per_core;
+
+	/* Logical processors (threads) per core */
+	result = cpuid_ext(0xb, 0);
+	threads_per_core = result.ebx & 0xffff;
+
+	/* Logical processors (threads) per package */
+	result = cpuid_ext(0xb, 1);
+	threads_per_package = result.ebx & 0xffff;
+
+	for (i = 0; i < threads_per_package && i < CONFIG_MAX_CPUS; ++i) {
+		apic_id_map[i] = (i % threads_per_core)
+			+ ((i / threads_per_core) << 2);
+	}
+
+	return threads_per_package;
+}
+
 static void enable_vmx(void)
 {
 	struct cpuid_result regs;
diff --git a/src/cpu/intel/model_2065x/smmrelocate.c b/src/cpu/intel/model_2065x/smmrelocate.c
deleted file mode 100644
index e357aa57e45b..000000000000
--- a/src/cpu/intel/model_2065x/smmrelocate.c
+++ /dev/null
@@ -1,293 +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.
- */
-
-#define __SIMPLE_DEVICE__
-
-#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/nehalem/nehalem.h>
-#include <southbridge/intel/ibexpeak/pch.h>
-#include "model_2065x.h"
-
-#define CORE_THREAD_COUNT_MSR 0x35
-
-#define SMRR_SUPPORTED (1<<11)
-
-struct smm_relocation_params {
-	u32 smram_base;
-	u32 smram_size;
-	u32 ied_base;
-	u32 ied_size;
-	msr_t smrr_base;
-	msr_t smrr_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);
-}
-
-/* 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);
-
-	southbridge_clear_smi_status();
-}
-
-static void fill_in_relocation_params(struct smm_relocation_params *params)
-{
-	u32 tseg_size;
-	u32 tsegmb;
-	u32 bgsm;
-	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 = pci_read_config32(PCI_DEV(0, 0, 0), TSEG) & ~1;
-	bgsm = pci_read_config32(PCI_DEV(0, 0, 0), D0F0_GTT_BASE);
-	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;
-}
-
-static void make_apicid_map(int threads_per_package, int threads_per_core, struct smm_loader_params *relo_params)
-{
-	int i;
-	for (i = 0; i < threads_per_package; ++i) {
-		relo_params->runtime->apic_id_to_cpu[i] = (i % threads_per_core)
-			+ ((i / threads_per_core) << 2);
-	}
-}
-
-static int install_relocation_handler(int threads_per_package, int threads_per_core,
-                                      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 = threads_per_package,
-		.per_cpu_save_state_size = save_state_size,
-		.num_concurrent_save_states = 1,
-		.handler = &cpu_smm_do_relocation,
-		.handler_arg = (void *)relo_params,
-	};
-
-	if (smm_setup_relocation_handler(&smm_params))
-		return -1;
-	make_apicid_map(threads_per_package, threads_per_core, &smm_params);
-	return 0;
-}
-
-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 threads_per_package, int threads_per_core,
-                                     struct smm_relocation_params *relo_params)
-{
-	/* There are threads_per_package concurrent stacks and threads_per_package 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 = threads_per_package,
-		.per_cpu_save_state_size = save_state_size,
-		.num_concurrent_save_states = threads_per_package,
-	};
-
-	printk(BIOS_DEBUG, "Installing SMM handler to 0x%08x\n",
-	       relo_params->smram_base);
-	if (smm_load_module((void *)relo_params->smram_base,
-			    relo_params->smram_size, &smm_params))
-		return -1;
-	make_apicid_map(threads_per_package, threads_per_core, &smm_params);
-	return 0;
-}
-
-static int cpu_smm_setup(void)
-{
-	device_t qpdev = PCI_DEV(QUICKPATH_BUS, 0, 1);
-	struct cpuid_result result;
-	unsigned threads_per_package, threads_per_core;
-
-	/* Logical processors (threads) per core */
-	result = cpuid_ext(0xb, 0);
-	threads_per_core = result.ebx & 0xffff;
-
-	/* Logical processors (threads) per package */
-	result = cpuid_ext(0xb, 1);
-	threads_per_package = result.ebx & 0xffff;
-
-	printk(BIOS_DEBUG, "Setting up SMI for CPU\n");
-
-	/* enable the SMM memory window */
-	pci_write_config8(qpdev, QPD0F1_SMRAM, D_OPEN | G_SMRAME | C_BASE_SEG);
-
-	fill_in_relocation_params(&smm_reloc_params);
-
-	setup_ied_area(&smm_reloc_params);
-
-	if (threads_per_package > CONFIG_MAX_CPUS) {
-		printk(BIOS_CRIT,
-		       "Error: Hardware CPUs (%d) > MAX_CPUS (%d)\n",
-		       threads_per_package, CONFIG_MAX_CPUS);
-	}
-
-	if (install_relocation_handler(threads_per_package, threads_per_core, &smm_reloc_params)) {
-		printk(BIOS_CRIT, "SMM Relocation handler install failed.\n");
-		return -1;
-	}
-
-	if (install_permanent_handler(threads_per_package, threads_per_core, &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();
-
-	/* close the SMM memory window and enable normal SMM */
-	pci_write_config8(qpdev, QPD0F1_SMRAM, G_SMRAME | C_BASE_SEG);
-
-	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(PCI_DEV(QUICKPATH_BUS, 0, 1), QPD0F1_SMRAM,
-			D_LCK | G_SMRAME | C_BASE_SEG);
-}
diff --git a/src/northbridge/intel/nehalem/Makefile.inc b/src/northbridge/intel/nehalem/Makefile.inc
index 698e76d0edff..cb02fd8a680c 100644
--- a/src/northbridge/intel/nehalem/Makefile.inc
+++ b/src/northbridge/intel/nehalem/Makefile.inc
@@ -21,6 +21,7 @@ ifeq ($(CONFIG_NORTHBRIDGE_INTEL_NEHALEM),y)
 
 ramstage-y += ram_calc.c
 ramstage-y += northbridge.c
+ramstage-y += smi.c
 ramstage-y += gma.c
 
 ramstage-y += acpi.c
diff --git a/src/northbridge/intel/nehalem/nehalem.h b/src/northbridge/intel/nehalem/nehalem.h
index 87f622d348a0..28bc5c86d5d9 100644
--- a/src/northbridge/intel/nehalem/nehalem.h
+++ b/src/northbridge/intel/nehalem/nehalem.h
@@ -481,11 +481,6 @@ void init_iommu(void);
 
 #define LAC		0x87	/* Legacy Access Control */
 #define QPD0F1_SMRAM		0x4d	/* 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 SKPAD		0xdc	/* Scratchpad Data */
 
@@ -583,12 +578,6 @@ void init_iommu(void);
 #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/northbridge/intel/nehalem/northbridge.c b/src/northbridge/intel/nehalem/northbridge.c
index 43bd846b9221..a3c2eeaa117a 100644
--- a/src/northbridge/intel/nehalem/northbridge.c
+++ b/src/northbridge/intel/nehalem/northbridge.c
@@ -37,6 +37,7 @@
 #include <cbmem.h>
 #include "chip.h"
 #include "nehalem.h"
+#include <cpu/intel/smm/gen1/smi.h>
 
 static int bridge_revision_id = -1;
 
@@ -165,6 +166,18 @@ static void mc_read_resources(device_t dev)
 	add_fixed_resources(dev, 10);
 }
 
+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 = pci_read_config32(dev, TSEG) & ~1;
+	bgsm = pci_read_config32(dev, D0F0_GTT_BASE);
+	*tseg_size = bgsm - *tsegmb;
+}
+
 static void mc_set_resources(device_t dev)
 {
 	/* And call the normal set_resources */
diff --git a/src/northbridge/intel/nehalem/smi.c b/src/northbridge/intel/nehalem/smi.c
new file mode 100644
index 000000000000..faafdeead123
--- /dev/null
+++ b/src/northbridge/intel/nehalem/smi.c
@@ -0,0 +1,14 @@
+#define __SIMPLE_DEVICE__
+
+#include <types.h>
+#include <string.h>
+#include <device/device.h>
+#include <device/pci.h>
+#include "nehalem.h"
+
+#include <cpu/intel/smm/gen1/smi.h>
+
+void northbridge_write_smram(u8 smram)
+{
+	pcie_write_config8(PCI_DEV(QUICKPATH_BUS, 0, 1), QPD0F1_SMRAM, smram);
+}
diff --git a/src/southbridge/intel/ibexpeak/pch.h b/src/southbridge/intel/ibexpeak/pch.h
index a73bb9779554..72f2a5c37c73 100644
--- a/src/southbridge/intel/ibexpeak/pch.h
+++ b/src/southbridge/intel/ibexpeak/pch.h
@@ -67,11 +67,6 @@ void intel_pch_finalize_smm(void);
 #include "chip.h"
 void pch_enable(device_t dev);
 #endif
-/* 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/ibexpeak/smi.c b/src/southbridge/intel/ibexpeak/smi.c
index 7972001a776d..46efa5ebdcd8 100644
--- a/src/southbridge/intel/ibexpeak/smi.c
+++ b/src/southbridge/intel/ibexpeak/smi.c
@@ -28,6 +28,7 @@
 #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