void southbridge_smm_clear_state(void)
{
u32 smi_en;
#if CONFIG_ELOG
/* Log events from chipset before clearing */
pch_log_state();
#endif
printk(BIOS_DEBUG, "Initializing Southbridge SMI...");
printk(BIOS_SPEW, " ... pmbase = 0x%04x\n", get_pmbase());
smi_en = inl(get_pmbase() + SMI_EN);
if (smi_en & APMC_EN) {
printk(BIOS_INFO, "SMI# handler already enabled?\n");
return;
}
printk(BIOS_DEBUG, "\n");
/* Dump and clear status registers */
clear_smi_status();
clear_pm1_status();
clear_tco_status();
clear_gpe_status();
}
static void pch_log_gpio_gpe(u32 gpe0_sts_reg, u32 gpe0_en_reg, int start)
{
/* GPE Bank 1 is GPIO 0-31 */
u32 gpe0_en = inl(get_pmbase() + gpe0_en_reg);
u32 gpe0_sts = inl(get_pmbase() + gpe0_sts_reg) & gpe0_en;
int i;
for (i = 0; i <= 31; i++) {
if (gpe0_sts & (1 << i))
elog_add_event_wake(ELOG_WAKE_SOURCE_GPIO, i + start);
}
}
static uint16_t reset_pm1_status(void)
{
uint16_t pmbase = get_pmbase();
uint16_t pm1_sts = inw(pmbase + PM1_STS);
outw(pm1_sts, pmbase + PM1_STS);
return pm1_sts;
}
static uint8_t mainboard_smi_ec(void)
{
uint8_t cmd = google_chromeec_get_event();
uint16_t pmbase = get_pmbase();
uint32_t pm1_cnt;
#if IS_ENABLED(CONFIG_ELOG_GSMI)
/* Log this event */
if (cmd)
elog_add_event_byte(ELOG_TYPE_EC_EVENT, cmd);
#endif
switch (cmd) {
case EC_HOST_EVENT_LID_CLOSED:
printk(BIOS_DEBUG, "LID CLOSED, SHUTDOWN\n");
/* Go to S5 */
pm1_cnt = inl(pmbase + PM1_CNT);
pm1_cnt |= SLP_EN | (SLP_TYP_S5 << SLP_TYP_SHIFT);
outl(pm1_cnt, pmbase + PM1_CNT);
break;
}
return cmd;
}
static uint32_t reset_alt_status(void)
{
uint16_t pmbase = get_pmbase();
uint32_t alt_gpio_smi = inl(pmbase + ALT_GPIO_SMI);
outl(alt_gpio_smi, pmbase + ALT_GPIO_SMI);
return alt_gpio_smi;
}
void generate_cpu_entries(void)
{
int len_pr, core;
int pcontrol_blk = get_pmbase(), plen = 6;
const struct pattrs *pattrs = pattrs_get();
for (core=0; core<pattrs->num_cpus; core++) {
if (core > 0) {
pcontrol_blk = 0;
plen = 0;
}
/* Generate processor \_PR.CPUx */
len_pr = acpigen_write_processor(
core, pcontrol_blk, plen);
/* Generate P-state tables */
len_pr += generate_P_state_entries(
core, pattrs->num_cpus);
/* Generate C-state tables */
len_pr += acpigen_write_CST_package(
cstate_map, ARRAY_SIZE(cstate_map));
/* Generate T-state tables */
len_pr += generate_T_state_entries(
core, pattrs->num_cpus);
len_pr--;
acpigen_patch_len(len_pr);
}
}
void disable_gpe(uint32_t mask)
{
uint16_t pmbase = get_pmbase();
uint32_t gpe0_en = inl(pmbase + GPE0_EN);
gpe0_en &= ~mask;
outl(gpe0_en, pmbase + GPE0_EN);
}
static uint32_t reset_gpe_status(void)
{
uint16_t pmbase = get_pmbase();
uint32_t gpe_sts = inl(pmbase + GPE0_STS);
outl(gpe_sts, pmbase + GPE0_STS);
return gpe_sts;
}
void disable_pm1_control(uint32_t mask)
{
uint16_t pmbase = get_pmbase();
uint32_t pm1_cnt = inl(pmbase + PM1_CNT);
pm1_cnt &= ~mask;
outl(pm1_cnt, pmbase + PM1_CNT);
}
void disable_smi(uint32_t mask)
{
uint16_t pmbase = get_pmbase();
uint32_t smi_en = inl(pmbase + SMI_EN);
smi_en &= ~mask;
outl(smi_en, pmbase + SMI_EN);
}
static uint32_t reset_smi_status(void)
{
uint16_t pmbase = get_pmbase();
uint32_t smi_sts = inl(pmbase + SMI_STS);
outl(smi_sts, pmbase + SMI_STS);
return smi_sts;
}
static void pch_log_standard_gpe(u32 gpe0_sts_reg, u32 gpe0_en_reg)
{
u32 gpe0_en = inl(get_pmbase() + gpe0_en_reg);
u32 gpe0_sts = inl(get_pmbase() + gpe0_sts_reg) & gpe0_en;
/* PME (TODO: determine wake device) */
if (gpe0_sts & (1 << 11))
elog_add_event_wake(ELOG_WAKE_SOURCE_PME, 0);
/* Internal PME (TODO: determine wake device) */
if (gpe0_sts & (1 << 13))
elog_add_event_wake(ELOG_WAKE_SOURCE_PME_INTERNAL, 0);
/* SMBUS Wake */
if (gpe0_sts & (1 << 7))
elog_add_event_wake(ELOG_WAKE_SOURCE_SMBUS, 0);
}
static uint32_t reset_tco_status(void)
{
uint16_t pmbase = get_pmbase();
uint32_t tco_sts = inl(pmbase + TCO_STS);
uint32_t tco_en = inl(pmbase + TCO1_CNT);
outl(tco_sts, pmbase + TCO_STS);
return tco_sts & tco_en;
}
void southbridge_smm_init(void)
{
u32 smi_en;
#if CONFIG_ELOG
/* Log events from chipset before clearing */
pch_log_state();
#endif
printk(BIOS_DEBUG, "Initializing Southbridge SMI...");
printk(BIOS_SPEW, " ... pmbase = 0x%04x\n", get_pmbase());
smi_en = inl(get_pmbase() + SMI_EN);
if (smi_en & APMC_EN) {
printk(BIOS_INFO, "SMI# handler already enabled?\n");
return;
}
printk(BIOS_DEBUG, "\n");
/* Dump and clear status registers */
clear_smi_status();
clear_pm1_status();
clear_tco_status();
clear_gpe_status();
/* Configure events */
enable_pm1(PWRBTN_EN | GBL_EN);
disable_gpe(PME_B0_EN);
/* Enable SMI generation:
* - on TCO events
* - on APMC writes (io 0xb2)
* - on writes to SLP_EN (sleep states)
* - on writes to GBL_RLS (bios commands)
* No SMIs:
* - on microcontroller writes (io 0x62/0x66)
*/
enable_smi(TCO_EN | APMC_EN | SLP_SMI_EN | GBL_SMI_EN | EOS);
}
static u8 mainboard_smi_ec(void)
{
u8 cmd = google_chromeec_get_event();
u32 pm1_cnt;
#if CONFIG_ELOG_GSMI
/* Log this event */
if (cmd)
elog_add_event_byte(ELOG_TYPE_EC_EVENT, cmd);
#endif
switch (cmd) {
case EC_HOST_EVENT_LID_CLOSED:
printk(BIOS_DEBUG, "LID CLOSED, SHUTDOWN\n");
/* Go to S5 */
pm1_cnt = inl(get_pmbase() + PM1_CNT);
pm1_cnt |= (0xf << 10);
outl(pm1_cnt, get_pmbase() + PM1_CNT);
break;
}
return cmd;
}
void southcluster_smm_clear_state(void)
{
uint32_t smi_en;
/* Log events from chipset before clearing */
southcluster_log_state();
printk(BIOS_DEBUG, "Initializing Southbridge SMI...");
printk(BIOS_SPEW, " pmbase = 0x%04x\n", get_pmbase());
smi_en = inl(get_pmbase() + SMI_EN);
if (smi_en & APMC_EN) {
printk(BIOS_INFO, "SMI# handler already enabled?\n");
return;
}
/* Dump and clear status registers */
clear_smi_status();
clear_pm1_status();
clear_tco_status();
clear_gpe_status();
clear_alt_status();
clear_pmc_status();
}
static void pch_log_gpe(void)
{
int i;
u16 pmbase = get_pmbase();
u32 gpe0_sts, gpe0_en;
int gpe0_high_gpios[] = {
[0] = 27,
[24] = 17,
[25] = 19,
[26] = 21,
[27] = 22,
[28] = 43,
[29] = 56,
[30] = 57,
[31] = 60
};
pch_log_standard_gpe(GPE0_EN, GPE0_STS);
/* GPIO 0-15 */
gpe0_en = inw(pmbase + GPE0_EN + 2);
gpe0_sts = inw(pmbase + GPE0_STS + 2) & gpe0_en;
for (i = 0; i <= 15; i++) {
if (gpe0_sts & (1 << i))
elog_add_event_wake(ELOG_WAKE_SOURCE_GPIO, i);
}
/*
* Now check and log upper status bits
*/
gpe0_en = inl(pmbase + GPE0_EN_2);
gpe0_sts = inl(pmbase + GPE0_STS_2) & gpe0_en;
for (i = 0; i <= 31; i++) {
if (!gpe0_high_gpios[i])
continue;
if (gpe0_sts & (1 << i))
elog_add_event_wake(ELOG_WAKE_SOURCE_GPIO,
gpe0_high_gpios[i]);
}
}
void acpi_create_fadt(acpi_fadt_t * fadt, acpi_facs_t * facs, void *dsdt)
{
acpi_header_t *header = &(fadt->header);
u16 pmbase = get_pmbase();
memset((void *) fadt, 0, sizeof(acpi_fadt_t));
memcpy(header->signature, "FACP", 4);
header->length = sizeof(acpi_fadt_t);
header->revision = 3;
memcpy(header->oem_id, OEM_ID, 6);
memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8);
memcpy(header->asl_compiler_id, ASLC, 4);
header->asl_compiler_revision = 1;
fadt->firmware_ctrl = (unsigned long) facs;
fadt->dsdt = (unsigned long) dsdt;
fadt->model = 1;
fadt->preferred_pm_profile = PM_MOBILE;
fadt->sci_int = 0x9;
fadt->smi_cmd = APM_CNT;
fadt->acpi_enable = APM_CNT_ACPI_ENABLE;
fadt->acpi_disable = APM_CNT_ACPI_DISABLE;
fadt->s4bios_req = 0x0;
fadt->pstate_cnt = 0;
fadt->pm1a_evt_blk = pmbase;
fadt->pm1b_evt_blk = 0x0;
fadt->pm1a_cnt_blk = pmbase + 0x4;
fadt->pm1b_cnt_blk = 0x0;
fadt->pm2_cnt_blk = pmbase + 0x50;
fadt->pm_tmr_blk = pmbase + 0x8;
fadt->gpe0_blk = pmbase + 0x80;
fadt->gpe1_blk = 0;
fadt->pm1_evt_len = 4;
fadt->pm1_cnt_len = 2;
fadt->pm2_cnt_len = 1;
fadt->pm_tmr_len = 4;
fadt->gpe0_blk_len = 32;
fadt->gpe1_blk_len = 0;
fadt->gpe1_base = 0;
fadt->cst_cnt = 0;
fadt->p_lvl2_lat = 1;
fadt->p_lvl3_lat = 87;
fadt->flush_size = 1024;
fadt->flush_stride = 16;
fadt->duty_offset = 1;
fadt->duty_width = 0;
fadt->day_alrm = 0xd;
fadt->mon_alrm = 0x00;
fadt->century = 0x00;
fadt->iapc_boot_arch = ACPI_FADT_LEGACY_DEVICES | ACPI_FADT_8042;
fadt->flags = ACPI_FADT_WBINVD | ACPI_FADT_C1_SUPPORTED |
ACPI_FADT_C2_MP_SUPPORTED | ACPI_FADT_SLEEP_BUTTON |
ACPI_FADT_RESET_REGISTER | ACPI_FADT_SEALED_CASE |
ACPI_FADT_S4_RTC_WAKE | ACPI_FADT_PLATFORM_CLOCK;
fadt->reset_reg.space_id = 1;
fadt->reset_reg.bit_width = 8;
fadt->reset_reg.bit_offset = 0;
fadt->reset_reg.resv = 0;
fadt->reset_reg.addrl = 0xcf9;
fadt->reset_reg.addrh = 0;
fadt->reset_value = 6;
fadt->x_firmware_ctl_l = (unsigned long)facs;
fadt->x_firmware_ctl_h = 0;
fadt->x_dsdt_l = (unsigned long)dsdt;
fadt->x_dsdt_h = 0;
fadt->x_pm1a_evt_blk.space_id = 1;
fadt->x_pm1a_evt_blk.bit_width = 32;
fadt->x_pm1a_evt_blk.bit_offset = 0;
fadt->x_pm1a_evt_blk.resv = 0;
fadt->x_pm1a_evt_blk.addrl = pmbase;
fadt->x_pm1a_evt_blk.addrh = 0x0;
fadt->x_pm1b_evt_blk.space_id = 1;
fadt->x_pm1b_evt_blk.bit_width = 0;
fadt->x_pm1b_evt_blk.bit_offset = 0;
fadt->x_pm1b_evt_blk.resv = 0;
fadt->x_pm1b_evt_blk.addrl = 0x0;
fadt->x_pm1b_evt_blk.addrh = 0x0;
fadt->x_pm1a_cnt_blk.space_id = 1;
fadt->x_pm1a_cnt_blk.bit_width = 16;
fadt->x_pm1a_cnt_blk.bit_offset = 0;
fadt->x_pm1a_cnt_blk.resv = 0;
fadt->x_pm1a_cnt_blk.addrl = pmbase + 0x4;
fadt->x_pm1a_cnt_blk.addrh = 0x0;
fadt->x_pm1b_cnt_blk.space_id = 1;
fadt->x_pm1b_cnt_blk.bit_width = 0;
fadt->x_pm1b_cnt_blk.bit_offset = 0;
fadt->x_pm1b_cnt_blk.resv = 0;
fadt->x_pm1b_cnt_blk.addrl = 0x0;
fadt->x_pm1b_cnt_blk.addrh = 0x0;
fadt->x_pm2_cnt_blk.space_id = 1;
fadt->x_pm2_cnt_blk.bit_width = 8;
fadt->x_pm2_cnt_blk.bit_offset = 0;
fadt->x_pm2_cnt_blk.resv = 0;
fadt->x_pm2_cnt_blk.addrl = pmbase + 0x50;
fadt->x_pm2_cnt_blk.addrh = 0x0;
fadt->x_pm_tmr_blk.space_id = 1;
fadt->x_pm_tmr_blk.bit_width = 32;
fadt->x_pm_tmr_blk.bit_offset = 0;
fadt->x_pm_tmr_blk.resv = 0;
fadt->x_pm_tmr_blk.addrl = pmbase + 0x8;
fadt->x_pm_tmr_blk.addrh = 0x0;
fadt->x_gpe0_blk.space_id = 0;
fadt->x_gpe0_blk.bit_width = 0;
fadt->x_gpe0_blk.bit_offset = 0;
fadt->x_gpe0_blk.resv = 0;
fadt->x_gpe0_blk.addrl = 0;
fadt->x_gpe0_blk.addrh = 0x0;
fadt->x_gpe1_blk.space_id = 1;
fadt->x_gpe1_blk.bit_width = 0;
fadt->x_gpe1_blk.bit_offset = 0;
fadt->x_gpe1_blk.resv = 0;
fadt->x_gpe1_blk.addrl = 0x0;
fadt->x_gpe1_blk.addrh = 0x0;
header->checksum =
acpi_checksum((void *) fadt, header->length);
}
void enable_pm1(uint16_t events)
{
outw(events, get_pmbase() + PM1_EN);
}
void pch_log_state(void)
{
u16 pm1_sts, gen_pmcon_3, tco2_sts;
u8 gen_pmcon_2;
struct device *lpc = dev_find_slot(0, PCI_DEVFN(0x1f, 0));
if (!lpc)
return;
pm1_sts = inw(get_pmbase() + PM1_STS);
tco2_sts = inw(get_pmbase() + TCO2_STS);
gen_pmcon_2 = pci_read_config8(lpc, GEN_PMCON_2);
gen_pmcon_3 = pci_read_config16(lpc, GEN_PMCON_3);
/* PWR_FLR Power Failure */
if (gen_pmcon_2 & (1 << 0))
elog_add_event(ELOG_TYPE_POWER_FAIL);
/* SUS Well Power Failure */
if (gen_pmcon_3 & (1 << 14))
elog_add_event(ELOG_TYPE_SUS_POWER_FAIL);
/* SYS_PWROK Failure */
if (gen_pmcon_2 & (1 << 1))
elog_add_event(ELOG_TYPE_SYS_PWROK_FAIL);
/* PWROK Failure */
if (gen_pmcon_2 & (1 << 0))
elog_add_event(ELOG_TYPE_PWROK_FAIL);
/* Second TCO Timeout */
if (tco2_sts & (1 << 1))
elog_add_event(ELOG_TYPE_TCO_RESET);
/* Power Button Override */
if (pm1_sts & (1 << 11))
elog_add_event(ELOG_TYPE_POWER_BUTTON_OVERRIDE);
/* System Reset Status (reset button pushed) */
if (gen_pmcon_2 & (1 << 4))
elog_add_event(ELOG_TYPE_RESET_BUTTON);
/* General Reset Status */
if (gen_pmcon_3 & (1 << 9))
elog_add_event(ELOG_TYPE_SYSTEM_RESET);
/* ACPI Wake */
if (pm1_sts & (1 << 15))
elog_add_event_byte(ELOG_TYPE_ACPI_WAKE,
acpi_is_wakeup_s3() ? 3 : 5);
/*
* Wake sources
*/
/* Power Button */
if (pm1_sts & (1 << 8))
elog_add_event_wake(ELOG_WAKE_SOURCE_PWRBTN, 0);
/* RTC */
if (pm1_sts & (1 << 10))
elog_add_event_wake(ELOG_WAKE_SOURCE_RTC, 0);
/* PCI Express (TODO: determine wake device) */
if (pm1_sts & (1 << 14))
elog_add_event_wake(ELOG_WAKE_SOURCE_PCIE, 0);
/* GPE */
if (pch_is_lp())
pch_lp_log_gpe();
else
pch_log_gpe();
}