Vladimir Serbinenko (phcoder@gmail.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/10351
-gerrit
commit 902aff1da7d4e1847a4714b231f083ef66b122a5 Author: Vladimir Serbinenko phcoder@gmail.com Date: Thu May 28 16:04:17 2015 +0200
Migrate 206ax to SMM_MODULES
This gets rid of ugly tseg_relocate for bd82x6x.
This is backport of 29ffa54969414b833de5c61b507b061f920d650b to bd82x6x.
Change-Id: I0f52540851ce8a7edaac257a2aa83d543bb5e530 Signed-off-by: Vladimir Serbinenko phcoder@gmail.com --- src/cpu/intel/haswell/smmrelocate.c | 5 - src/cpu/intel/model_206ax/Kconfig | 1 + src/cpu/intel/model_206ax/Makefile.inc | 2 + src/cpu/intel/model_206ax/model_206ax.h | 1 + src/cpu/intel/model_206ax/smmrelocate.c | 338 ++++++++++++++++++++++++ src/cpu/x86/smm/smmrelocate.S | 7 +- src/northbridge/intel/sandybridge/sandybridge.h | 1 + src/southbridge/intel/bd82x6x/lpc.c | 51 +--- src/southbridge/intel/bd82x6x/pch.h | 5 + src/southbridge/intel/bd82x6x/smi.c | 99 ++----- src/southbridge/intel/bd82x6x/smihandler.c | 72 ++--- 11 files changed, 390 insertions(+), 192 deletions(-)
diff --git a/src/cpu/intel/haswell/smmrelocate.c b/src/cpu/intel/haswell/smmrelocate.c index ab94f9a..37546e5 100644 --- a/src/cpu/intel/haswell/smmrelocate.c +++ b/src/cpu/intel/haswell/smmrelocate.c @@ -354,11 +354,6 @@ static void setup_ied_area(struct smm_relocation_params *params)
/* Zero out 32KiB at IEDBASE + 1MiB */ memset(ied_base + (1 << 20), 0, (32 << 10)); - - /* According to the BWG MP init section 2MiB of memory at IEDBASE + - * 2MiB should be zeroed as well. However, I suspect what is intended - * is to clear the memory covered by EMRR. TODO(adurbin): figure out if * this is really required. */ - //memset(ied_base + (2 << 20), 0, (2 << 20)); }
static int install_permanent_handler(int num_cpus, diff --git a/src/cpu/intel/model_206ax/Kconfig b/src/cpu/intel/model_206ax/Kconfig index 490849b..1ecc911 100644 --- a/src/cpu/intel/model_206ax/Kconfig +++ b/src/cpu/intel/model_206ax/Kconfig @@ -16,6 +16,7 @@ config CPU_SPECIFIC_OPTIONS select SSE2 select UDELAY_LAPIC select SMM_TSEG + select SMM_MODULES select SUPPORT_CPU_UCODE_IN_CBFS select PARALLEL_CPU_INIT #select AP_IN_SIPI_WAIT diff --git a/src/cpu/intel/model_206ax/Makefile.inc b/src/cpu/intel/model_206ax/Makefile.inc index 32a5eff..c296fd9 100644 --- a/src/cpu/intel/model_206ax/Makefile.inc +++ b/src/cpu/intel/model_206ax/Makefile.inc @@ -8,3 +8,5 @@ smm-$(CONFIG_HAVE_SMI_HANDLER) += finalize.c cpu_microcode-$(CONFIG_CPU_MICROCODE_CBFS_GENERATE) += microcode_blob.c
cpu_incs += $(src)/cpu/intel/model_206ax/cache_as_ram.inc + +ramstage-$(CONFIG_HAVE_SMI_HANDLER) += smmrelocate.c diff --git a/src/cpu/intel/model_206ax/model_206ax.h b/src/cpu/intel/model_206ax/model_206ax.h index 6b23750..671f359 100644 --- a/src/cpu/intel/model_206ax/model_206ax.h +++ b/src/cpu/intel/model_206ax/model_206ax.h @@ -103,6 +103,7 @@ void intel_model_206ax_finalize_smm(void); /* Configure power limits for turbo mode */ void set_power_limits(u8 power_limit_1_time); int cpu_config_tdp_levels(void); +void smm_relocate(void); #endif
#endif diff --git a/src/cpu/intel/model_206ax/smmrelocate.c b/src/cpu/intel/model_206ax/smmrelocate.c new file mode 100644 index 0000000..b20370d --- /dev/null +++ b/src/cpu/intel/model_206ax/smmrelocate.c @@ -0,0 +1,338 @@ +/* + * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#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/sandybridge/sandybridge.h> +#include <southbridge/intel/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)); + + /* According to the BWG MP init section 2MiB of memory at IEDBASE + + * 2MiB should be zeroed as well. However, I suspect what is intended + * is to clear the memory covered by EMRR. TODO(adurbin): figure out if * this is really required. */ + //memset(ied_base + (2 << 20), 0, (2 << 20)); +} + +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/cpu/x86/smm/smmrelocate.S b/src/cpu/x86/smm/smmrelocate.S index 79ef156..3b29233 100644 --- a/src/cpu/x86/smm/smmrelocate.S +++ b/src/cpu/x86/smm/smmrelocate.S @@ -36,7 +36,7 @@ #include "../../../southbridge/intel/i82801dx/i82801dx.h" #elif CONFIG_SOUTHBRIDGE_INTEL_SCH #include "../../../southbridge/intel/sch/sch.h" -#elif CONFIG_SOUTHBRIDGE_INTEL_BD82X6X || CONFIG_SOUTHBRIDGE_INTEL_C216 || CONFIG_SOUTHBRIDGE_INTEL_IBEXPEAK +#elif CONFIG_SOUTHBRIDGE_INTEL_IBEXPEAK #include "../../../southbridge/intel/bd82x6x/pch.h" #elif CONFIG_SOUTHBRIDGE_INTEL_FSP_BD82X6X #include "../../../southbridge/intel/fsp_bd82x6x/pch.h" @@ -48,10 +48,7 @@
#if CONFIG_SMM_TSEG
-#if CONFIG_NORTHBRIDGE_INTEL_SANDYBRIDGE || CONFIG_NORTHBRIDGE_INTEL_IVYBRIDGE || CONFIG_NORTHBRIDGE_INTEL_IVYBRIDGE_NATIVE || CONFIG_NORTHBRIDGE_INTEL_SANDYBRIDGE_NATIVE -#include <northbridge/intel/sandybridge/sandybridge.h> -#define TSEG_BAR (DEFAULT_PCIEXBAR | TSEG) -#elif CONFIG_NORTHBRIDGE_INTEL_NEHALEM +#if CONFIG_NORTHBRIDGE_INTEL_NEHALEM #include <northbridge/intel/nehalem/nehalem.h> #define TSEG_BAR (DEFAULT_PCIEXBAR | TSEG) #else diff --git a/src/northbridge/intel/sandybridge/sandybridge.h b/src/northbridge/intel/sandybridge/sandybridge.h index 6be14b8..09894f7 100644 --- a/src/northbridge/intel/sandybridge/sandybridge.h +++ b/src/northbridge/intel/sandybridge/sandybridge.h @@ -99,6 +99,7 @@
#define TOM 0xa0 #define TOUUD 0xa8 /* Top of Upper Usable DRAM */ +#define BGSM 0xb4 /* Base GTT Stolen Memory */ #define TSEG 0xb8 /* TSEG base */ #define TOLUD 0xbc /* Top of Low Used Memory */
diff --git a/src/southbridge/intel/bd82x6x/lpc.c b/src/southbridge/intel/bd82x6x/lpc.c index 19e5407..842d9d9 100644 --- a/src/southbridge/intel/bd82x6x/lpc.c +++ b/src/southbridge/intel/bd82x6x/lpc.c @@ -43,7 +43,6 @@ #define NMI_OFF 0
#define ENABLE_ACPI_MODE_IN_COREBOOT 0 -#define TEST_SMM_FLASH_LOCKDOWN 0
typedef struct southbridge_intel_bd82x6x_config config_t;
@@ -427,58 +426,20 @@ static void enable_clock_gating(device_t dev) RCBA32_OR(0x3564, 0x3); }
-#if CONFIG_HAVE_SMI_HANDLER -static void pch_lock_smm(struct device *dev) +static void pch_set_acpi_mode(void) { -#if TEST_SMM_FLASH_LOCKDOWN - u8 reg8; -#endif - - if (!acpi_is_wakeup_s3()) { + if (!acpi_is_wakeup_s3() && CONFIG_HAVE_SMI_HANDLER) { #if ENABLE_ACPI_MODE_IN_COREBOOT printk(BIOS_DEBUG, "Enabling ACPI via APMC:\n"); - outb(0xe1, 0xb2); // Enable ACPI mode + outb(APM_CNT_ACPI_ENABLE, APM_CNT); // Enable ACPI mode printk(BIOS_DEBUG, "done.\n"); #else printk(BIOS_DEBUG, "Disabling ACPI via APMC:\n"); - outb(0x1e, 0xb2); // Disable ACPI mode + outb(APM_CNT_ACPI_DISABLE, APM_CNT); // Disable ACPI mode printk(BIOS_DEBUG, "done.\n"); #endif } - - /* Don't allow evil boot loaders, kernels, or - * userspace applications to deceive us: - */ - smm_lock(); - -#if TEST_SMM_FLASH_LOCKDOWN - /* Now try this: */ - printk(BIOS_DEBUG, "Locking BIOS to RO... "); - reg8 = pci_read_config8(dev, 0xdc); /* BIOS_CNTL */ - printk(BIOS_DEBUG, " BLE: %s; BWE: %s\n", (reg8&2)?"on":"off", - (reg8&1)?"rw":"ro"); - reg8 &= ~(1 << 0); /* clear BIOSWE */ - pci_write_config8(dev, 0xdc, reg8); - reg8 |= (1 << 1); /* set BLE */ - pci_write_config8(dev, 0xdc, reg8); - printk(BIOS_DEBUG, "ok.\n"); - reg8 = pci_read_config8(dev, 0xdc); /* BIOS_CNTL */ - printk(BIOS_DEBUG, " BLE: %s; BWE: %s\n", (reg8&2)?"on":"off", - (reg8&1)?"rw":"ro"); - - printk(BIOS_DEBUG, "Writing:\n"); - *(volatile u8 *)0xfff00000 = 0x00; - printk(BIOS_DEBUG, "Testing:\n"); - reg8 |= (1 << 0); /* set BIOSWE */ - pci_write_config8(dev, 0xdc, reg8); - - reg8 = pci_read_config8(dev, 0xdc); /* BIOS_CNTL */ - printk(BIOS_DEBUG, " BLE: %s; BWE: %s\n", (reg8&2)?"on":"off", - (reg8&1)?"rw":"ro"); - printk(BIOS_DEBUG, "Done.\n"); -#endif } -#endif
static void pch_disable_smm_only_flashing(struct device *dev) { @@ -572,9 +533,7 @@ static void lpc_init(struct device *dev)
pch_disable_smm_only_flashing(dev);
-#if CONFIG_HAVE_SMI_HANDLER - pch_lock_smm(dev); -#endif + pch_set_acpi_mode();
pch_fixups(dev); } diff --git a/src/southbridge/intel/bd82x6x/pch.h b/src/southbridge/intel/bd82x6x/pch.h index 3ce5d63..950dbc4 100644 --- a/src/southbridge/intel/bd82x6x/pch.h +++ b/src/southbridge/intel/bd82x6x/pch.h @@ -66,6 +66,11 @@ 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/bd82x6x/smi.c b/src/southbridge/intel/bd82x6x/smi.c index b60c364..59a9c01 100644 --- a/src/southbridge/intel/bd82x6x/smi.c +++ b/src/southbridge/intel/bd82x6x/smi.c @@ -28,10 +28,6 @@ #include <cpu/x86/smm.h> #include <string.h> #include "pch.h" -#include "northbridge/intel/sandybridge/sandybridge.h" - -extern unsigned char _binary_smm_start; -extern unsigned char _binary_smm_end;
/* While we read PMBASE dynamically in case it changed, let's * initialize it with a sane value @@ -228,15 +224,18 @@ static void smi_set_eos(void) outb(reg8, pmbase + SMI_EN); }
-extern uint8_t smm_relocation_start, smm_relocation_end; - -static void smm_relocate(void) +void southbridge_smm_init(void) { u32 smi_en; u16 pm1_en; u32 gpe0_en;
- printk(BIOS_DEBUG, "Initializing SMM handler..."); +#if CONFIG_ELOG + /* Log events from chipset before clearing */ + pch_log_state(); +#endif + + printk(BIOS_DEBUG, "Initializing southbridge SMI...");
pmbase = pci_read_config32(dev_find_slot(0, PCI_DEVFN(0x1f, 0)), PMBASE) & 0xff80; @@ -249,10 +248,6 @@ static void smm_relocate(void) return; }
- /* copy the SMM relocation code */ - memcpy((void *)0x38000, &smm_relocation_start, - &smm_relocation_end - &smm_relocation_start); - printk(BIOS_DEBUG, "\n"); dump_smi_status(reset_smi_status()); dump_pm1_status(reset_pm1_status()); @@ -301,7 +296,10 @@ static void smm_relocate(void) smi_en |= EOS | GBL_SMI_EN;
outl(smi_en, pmbase + SMI_EN); +}
+void southbridge_trigger_smi(void) +{ /** * There are several methods of raising a controlled SMI# via * software, among them: @@ -320,79 +318,18 @@ static void smm_relocate(void) outb(0x00, 0xb2); }
-static int smm_handler_copied = 0; - -static void smm_install(void) +void southbridge_clear_smi_status(void) { - device_t dev = dev_find_slot(0, PCI_DEVFN(0, 0)); - u32 smm_base = 0xa0000; - struct ied_header ied = { - .signature = "INTEL RSVD", - .size = IED_SIZE, - .reserved = {0}, - }; - - /* The first CPU running this gets to copy the SMM handler. But not all - * of them. - */ - if (smm_handler_copied) - return; - smm_handler_copied = 1; - - /* enable the SMM memory window */ - pci_write_config8(dev, SMRAM, D_OPEN | G_SMRAME | C_BASE_SEG); - -#if CONFIG_SMM_TSEG - smm_base = pci_read_config32(dev, TSEG) & ~1; -#endif - - /* copy the real SMM handler */ - printk(BIOS_DEBUG, "Installing SMM handler to 0x%08x\n", smm_base); - memcpy((void *)smm_base, &_binary_smm_start, - (size_t)(&_binary_smm_end - &_binary_smm_start)); - - /* copy the IED header into place */ - if (CONFIG_SMM_TSEG_SIZE > IED_SIZE) { - /* Top of TSEG region */ - smm_base += CONFIG_SMM_TSEG_SIZE - IED_SIZE; - printk(BIOS_DEBUG, "Installing IED header to 0x%08x\n", - smm_base); - memcpy((void *)smm_base, &ied, sizeof(ied)); - } - wbinvd(); - - /* close the SMM memory window and enable normal SMM */ - pci_write_config8(dev, SMRAM, G_SMRAME | C_BASE_SEG); -} - -void smm_init(void) -{ -#if CONFIG_ELOG - /* Log events from chipset before clearing */ - pch_log_state(); -#endif - - /* Put SMM code to 0xa0000 */ - smm_install(); - - /* Put relocation code to 0x38000 and relocate SMBASE */ - smm_relocate(); - - /* We're done. Make sure SMIs can happen! */ + /* Clear SMI status */ + reset_smi_status(); + + /* Clear PM1 status */ + reset_pm1_status(); + + /* Set EOS bit so other SMIs can occur. */ smi_set_eos(); }
-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); -} - void smm_setup_structures(void *gnvs, void *tcg, void *smi1) { /* diff --git a/src/southbridge/intel/bd82x6x/smihandler.c b/src/southbridge/intel/bd82x6x/smihandler.c index 3593c47..d9d63b7 100644 --- a/src/southbridge/intel/bd82x6x/smihandler.c +++ b/src/southbridge/intel/bd82x6x/smihandler.c @@ -31,10 +31,6 @@
#include "nvs.h"
-/* We are using PCIe accesses for now - * 1. the chipset can do it - * 2. we don't need to worry about how we leave 0xcf8/0xcfc behind - */ #include <northbridge/intel/sandybridge/sandybridge.h> #include <arch/pci_mmio_cfg.h> #include <southbridge/intel/bd82x6x/me.h> @@ -54,28 +50,12 @@ static u8 smm_initialized = 0; /* GNVS needs to be updated by an 0xEA PM Trap (B2) after it has been located * by coreboot. */ -static global_nvs_t *gnvs = (global_nvs_t *)0x0; +static global_nvs_t *gnvs; global_nvs_t *smm_get_gnvs(void) { return gnvs; }
-#if CONFIG_SMM_TSEG -static u32 tseg_base = 0; -u32 smi_get_tseg_base(void) -{ - if (!tseg_base) - tseg_base = pci_read_config32(PCI_DEV(0, 0, 0), TSEG) & ~1; - return tseg_base; -} -void tseg_relocate(void **ptr) -{ - /* Adjust pointer with TSEG base */ - if (*ptr && *ptr < (void*)smi_get_tseg_base()) - *ptr = (void *)(((u8*)*ptr) + smi_get_tseg_base()); -} -#endif - static void alt_gpi_mask(u16 clr, u16 set) { u16 alt_gp = inw(pmbase + ALT_GP_SMI_EN); @@ -424,7 +404,7 @@ static void xhci_sleep(u8 slp_typ) }
-static void southbridge_smi_sleep(unsigned int node, smm_state_save_area_t *state_save) +static void southbridge_smi_sleep(void) { u8 reg8; u32 reg32; @@ -439,8 +419,6 @@ static void southbridge_smi_sleep(unsigned int node, smm_state_save_area_t *stat outb(tmp70, 0x70); outb(tmp72, 0x72);
- void (*mainboard_sleep)(u8 slp_typ) = mainboard_smi_sleep; - /* First, disable further SMIs */ reg8 = inb(pmbase + SMI_EN); reg8 &= ~SLP_SMI_EN; @@ -455,8 +433,7 @@ static void southbridge_smi_sleep(unsigned int node, smm_state_save_area_t *stat xhci_sleep(slp_typ);
/* Do any mainboard sleep handling */ - tseg_relocate((void **)&mainboard_sleep); - mainboard_sleep(slp_typ-2); + mainboard_smi_sleep(slp_typ-2);
#if CONFIG_ELOG_GSMI /* Log S3, S4, and S5 entry */ @@ -532,13 +509,11 @@ static void southbridge_smi_sleep(unsigned int node, smm_state_save_area_t *stat static em64t101_smm_state_save_area_t *smi_apmc_find_state_save(u8 cmd) { em64t101_smm_state_save_area_t *state; - u32 base = smi_get_tseg_base() + SMM_EM64T101_SAVE_STATE_OFFSET; int node;
/* Check all nodes looking for the one that issued the IO */ for (node = 0; node < CONFIG_MAX_CPUS; node++) { - state = (em64t101_smm_state_save_area_t *) - (base - (node * 0x400)); + state = smm_get_save_state(node);
/* Check for Synchronous IO (bit0==1) */ if (!(state->io_misc_info & (1 << 0))) @@ -587,11 +562,10 @@ static void southbridge_smi_gsmi(void)
static int mainboard_finalized = 0;
-static void southbridge_smi_apmc(unsigned int node, smm_state_save_area_t *state_save) +static void southbridge_smi_apmc(void) { u32 pmctrl; u8 reg8; - int (*mainboard_apmc)(u8 apmc) = mainboard_smi_apmc; em64t101_smm_state_save_area_t *state;
/* Emulate B2 register as the FADT / Linux expects it */ @@ -657,11 +631,10 @@ static void southbridge_smi_apmc(unsigned int node, smm_state_save_area_t *state #endif }
- tseg_relocate((void **)&mainboard_apmc); - mainboard_apmc(reg8); + mainboard_smi_apmc(reg8); }
-static void southbridge_smi_pm1(unsigned int node, smm_state_save_area_t *state_save) +static void southbridge_smi_pm1(void) { u16 pm1_sts;
@@ -682,7 +655,7 @@ static void southbridge_smi_pm1(unsigned int node, smm_state_save_area_t *state_ } }
-static void southbridge_smi_gpe0(unsigned int node, smm_state_save_area_t *state_save) +static void southbridge_smi_gpe0(void) { u32 gpe0_sts;
@@ -690,17 +663,15 @@ static void southbridge_smi_gpe0(unsigned int node, smm_state_save_area_t *state dump_gpe0_status(gpe0_sts); }
-static void southbridge_smi_gpi(unsigned int node, smm_state_save_area_t *state_save) +static void southbridge_smi_gpi(void) { - void (*mainboard_gpi)(u32 gpi_sts) = mainboard_smi_gpi; u16 reg16; reg16 = inw(pmbase + ALT_GP_SMI_STS); outw(reg16, pmbase + ALT_GP_SMI_STS);
reg16 &= inw(pmbase + ALT_GP_SMI_EN);
- tseg_relocate((void **)&mainboard_gpi); - mainboard_gpi(reg16); + mainboard_smi_gpi(reg16);
if (reg16) printk(BIOS_DEBUG, "GPI (mask %04x)\n", reg16); @@ -708,7 +679,7 @@ static void southbridge_smi_gpi(unsigned int node, smm_state_save_area_t *state_ outw(reg16, pmbase + ALT_GP_SMI_STS); }
-static void southbridge_smi_mc(unsigned int node, smm_state_save_area_t *state_save) +static void southbridge_smi_mc(void) { u32 reg32;
@@ -723,7 +694,7 @@ static void southbridge_smi_mc(unsigned int node, smm_state_save_area_t *state_s
-static void southbridge_smi_tco(unsigned int node, smm_state_save_area_t *state_save) +static void southbridge_smi_tco(void) { u32 tco_sts;
@@ -760,7 +731,7 @@ static void southbridge_smi_tco(unsigned int node, smm_state_save_area_t *state_ } }
-static void southbridge_smi_periodic(unsigned int node, smm_state_save_area_t *state_save) +static void southbridge_smi_periodic(void) { u32 reg32;
@@ -773,7 +744,7 @@ static void southbridge_smi_periodic(unsigned int node, smm_state_save_area_t *s printk(BIOS_DEBUG, "Periodic SMI.\n"); }
-static void southbridge_smi_monitor(unsigned int node, smm_state_save_area_t *state_save) +static void southbridge_smi_monitor(void) { #define IOTRAP(x) (trap_sts & (1 << x)) u32 trap_sts, trap_cycle; @@ -827,8 +798,7 @@ static void southbridge_smi_monitor(unsigned int node, smm_state_save_area_t *st #undef IOTRAP }
-typedef void (*smi_handler_t)(unsigned int node, - smm_state_save_area_t *state_save); +typedef void (*smi_handler_t)(void);
static smi_handler_t southbridge_smi[32] = { NULL, // [0] reserved @@ -870,7 +840,7 @@ static smi_handler_t southbridge_smi[32] = { * @param node * @param state_save */ -void southbridge_smi_handler(unsigned int node, smm_state_save_area_t *state_save) +void southbridge_smi_handler(void) { int i, dump = 0; u32 smi_sts; @@ -887,15 +857,7 @@ void southbridge_smi_handler(unsigned int node, smm_state_save_area_t *state_sav for (i = 0; i < 31; i++) { if (smi_sts & (1 << i)) { if (southbridge_smi[i]) { -#if CONFIG_SMM_TSEG - smi_handler_t handler = (smi_handler_t) - ((u8*)southbridge_smi[i] + - smi_get_tseg_base()); - if (handler) - handler(node, state_save); -#else - southbridge_smi[i](node, state_save); -#endif + southbridge_smi[i](); } else { printk(BIOS_DEBUG, "SMI_STS[%d] occured, but no " "handler available.\n", i);