GNUBoot/coreboot-kgpe-d16
2
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

fsp_model_206ax: Use common i945-ivy tseg SMM init.

Browse source 
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>
This commit is contained in:
Vladimir Serbinenko 2015-05-29 16:33:49 +02:00
parent f099e1bcff
commit f34082c0e3
7 changed files with 47 additions and 351 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
src/cpu/intel/fsp_model_206ax/Makefile.inc
View file

@ -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

17
src/cpu/intel/fsp_model_206ax/model_206ax_init.c
View file

@ -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.
*/

333
src/cpu/intel/fsp_model_206ax/smmrelocate.c
View file

@ -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);
}

28
src/northbridge/intel/fsp_sandybridge/northbridge.c
View file

@ -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,
};

11
src/northbridge/intel/fsp_sandybridge/northbridge.h
View file

@ -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

5
src/southbridge/intel/fsp_bd82x6x/pch.h
View file

@ -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);

1
src/southbridge/intel/fsp_bd82x6x/smi.c
View file

@ -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