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-rw-r--r--src/southbridge/intel/lynxpoint/lpc.c52
-rw-r--r--src/southbridge/intel/lynxpoint/pch.h5
-rw-r--r--src/southbridge/intel/lynxpoint/smi.c96
-rw-r--r--src/southbridge/intel/lynxpoint/smihandler.c82
4 files changed, 44 insertions, 191 deletions
diff --git a/src/southbridge/intel/lynxpoint/lpc.c b/src/southbridge/intel/lynxpoint/lpc.c
index facea7cdd6..eaf926ca7c 100644
--- a/src/southbridge/intel/lynxpoint/lpc.c
+++ b/src/southbridge/intel/lynxpoint/lpc.c
@@ -29,13 +29,13 @@
#include <arch/ioapic.h>
#include <arch/acpi.h>
#include <cpu/cpu.h>
+#include <cpu/x86/smm.h>
#include <elog.h>
#include "pch.h"
#define NMI_OFF 0
#define ENABLE_ACPI_MODE_IN_COREBOOT 0
-#define TEST_SMM_FLASH_LOCKDOWN 0
typedef struct southbridge_intel_lynxpoint_config config_t;
@@ -428,58 +428,22 @@ static void enable_clock_gating(device_t dev)
#endif
}
-#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 CONFIG_HAVE_SMI_HANDLER
if (acpi_slp_type != 3) {
#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);
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);
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 /* CONFIG_HAVE_SMI_HANDLER */
}
-#endif
static void pch_disable_smm_only_flashing(struct device *dev)
{
@@ -567,9 +531,7 @@ 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/lynxpoint/pch.h b/src/southbridge/intel/lynxpoint/pch.h
index f27ae90eab..6f17d38124 100644
--- a/src/southbridge/intel/lynxpoint/pch.h
+++ b/src/southbridge/intel/lynxpoint/pch.h
@@ -97,6 +97,11 @@ void pch_iobp_update(u32 address, u32 andvalue, u32 orvalue);
void pch_log_state(void);
#endif
void acpi_create_intel_hpet(acpi_hpet_t * hpet);
+
+/* These helpers are for performing SMM relocation. */
+void southbridge_smm_init(void);
+void southbridge_trigger_smi(void);
+void southbridge_clear_smi_status(void);
#else
void enable_smbus(void);
void enable_usb_bar(void);
diff --git a/src/southbridge/intel/lynxpoint/smi.c b/src/southbridge/intel/lynxpoint/smi.c
index 0bb98813ed..80dea2ce5b 100644
--- a/src/southbridge/intel/lynxpoint/smi.c
+++ b/src/southbridge/intel/lynxpoint/smi.c
@@ -30,13 +30,6 @@
#include <string.h>
#include "pch.h"
-#if CONFIG_NORTHBRIDGE_INTEL_HASWELL
-#include "northbridge/intel/haswell/haswell.h"
-#endif
-
-extern unsigned char _binary_smm_start;
-extern unsigned char _binary_smm_size;
-
/* While we read PMBASE dynamically in case it changed, let's
* initialize it with a sane value
*/
@@ -232,15 +225,17 @@ 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;
@@ -253,10 +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());
@@ -305,7 +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:
@@ -324,78 +318,18 @@ static void smm_relocate(void)
outb(0x00, 0xb2);
}
-static int smm_handler_copied = 0;
-
-static void smm_install(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_size);
-
- /* 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)
+void southbridge_clear_smi_status(void)
{
-#if CONFIG_ELOG
- /* Log events from chipset before clearing */
- pch_log_state();
-#endif
-
- /* Put SMM code to 0xa0000 */
- smm_install();
+ /* Clear SMI status */
+ reset_smi_status();
- /* Put relocation code to 0x38000 and relocate SMBASE */
- smm_relocate();
+ /* Clear PM1 status */
+ reset_pm1_status();
- /* We're done. Make sure SMIs can happen! */
+ /* 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/lynxpoint/smihandler.c b/src/southbridge/intel/lynxpoint/smihandler.c
index 7c982d129a..48dca2c8fd 100644
--- a/src/southbridge/intel/lynxpoint/smihandler.c
+++ b/src/southbridge/intel/lynxpoint/smihandler.c
@@ -33,12 +33,6 @@
#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/haswell/haswell.h>
-
/* While we read PMBASE dynamically in case it changed, let's
* initialize it with a sane value
*/
@@ -53,28 +47,12 @@ 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
-
/**
* @brief read and clear PM1_STS
* @return PM1_STS register
@@ -290,7 +268,7 @@ static void busmaster_disable_on_bus(int bus)
}
}
-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;
@@ -305,8 +283,6 @@ 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;
@@ -318,9 +294,7 @@ static void southbridge_smi_sleep(unsigned int node, smm_state_save_area_t *stat
slp_typ = (reg32 >> 10) & 7;
/* Do any mainboard sleep handling */
- tseg_relocate((void **)&mainboard_sleep);
- if (mainboard_sleep)
- mainboard_sleep(slp_typ-2);
+ mainboard_smi_sleep(slp_typ-2);
#if CONFIG_ELOG_GSMI
/* Log S3, S4, and S5 entry */
@@ -390,17 +364,14 @@ static void southbridge_smi_sleep(unsigned int node, smm_state_save_area_t *stat
* core in case we are not running on the same core that
* initiated the IO transaction.
*/
-/* FIXME: Confirm Haswell's SMM save state area structure. */
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() + 0x8000 + 0x7d00;
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)))
@@ -447,11 +418,10 @@ static void southbridge_smi_gsmi(void)
}
#endif
-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 */
@@ -504,12 +474,10 @@ static void southbridge_smi_apmc(unsigned int node, smm_state_save_area_t *state
#endif
}
- tseg_relocate((void **)&mainboard_apmc);
- if (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;
@@ -530,7 +498,7 @@ 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;
@@ -538,27 +506,20 @@ 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)(u16 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);
- if (mainboard_gpi) {
- mainboard_gpi(reg16);
- } else {
- if (reg16)
- printk(BIOS_DEBUG, "GPI (mask %04x)\n",reg16);
- }
+ mainboard_smi_gpi(reg16);
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;
@@ -573,7 +534,7 @@ 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;
@@ -610,7 +571,7 @@ 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;
@@ -623,7 +584,7 @@ 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;
@@ -677,8 +638,7 @@ 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
@@ -721,7 +681,7 @@ static smi_handler_t southbridge_smi[32] = {
* @param smm_revision revision of the smm state save map
*/
-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;
@@ -738,15 +698,7 @@ 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);
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-05 04:26:06 +0000