From a3e41c089602c58409e8dfd4aceecbdd7d4f4a5b Mon Sep 17 00:00:00 2001 From: Vladimir Serbinenko Date: Thu, 28 May 2015 16:04:17 +0200 Subject: 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 Reviewed-on: http://review.coreboot.org/10351 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin --- 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 +++++----------------- 4 files changed, 45 insertions(+), 182 deletions(-) (limited to 'src/southbridge') diff --git a/src/southbridge/intel/bd82x6x/lpc.c b/src/southbridge/intel/bd82x6x/lpc.c index 19e540738c..842d9d994f 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 3ce5d63bac..950dbc4fd8 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 b60c3648ff..59a9c012e5 100644 --- a/src/southbridge/intel/bd82x6x/smi.c +++ b/src/southbridge/intel/bd82x6x/smi.c @@ -28,10 +28,6 @@ #include #include #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 3593c4753e..d9d63b719d 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 #include #include @@ -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); -- cgit v1.2.3