| /* |
| * This file is part of the coreboot project. |
| * |
| * |
| * 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; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * 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. |
| */ |
| |
| #include <arch/acpi.h> |
| #include <arch/acpigen.h> |
| #include <console/console.h> |
| #include <device/mmio.h> |
| #include <arch/smp/mpspec.h> |
| #include <assert.h> |
| #include <device/pci_ops.h> |
| #include <cbmem.h> |
| #include <cpu/x86/smm.h> |
| #include <gpio.h> |
| #include <intelblocks/acpi.h> |
| #include <intelblocks/pmclib.h> |
| #include <intelblocks/sgx.h> |
| #include <intelblocks/p2sb.h> |
| #include <soc/iomap.h> |
| #include <soc/pm.h> |
| #include <soc/nvs.h> |
| #include <soc/pci_devs.h> |
| #include <soc/systemagent.h> |
| #include <string.h> |
| |
| #include "chip.h" |
| |
| #define CSTATE_RES(address_space, width, offset, address) \ |
| { \ |
| .space_id = address_space, \ |
| .bit_width = width, \ |
| .bit_offset = offset, \ |
| .addrl = address, \ |
| } |
| |
| static acpi_cstate_t cstate_map[] = { |
| { |
| /* C1 */ |
| .ctype = 1, /* ACPI C1 */ |
| .latency = 1, |
| .power = 1000, |
| .resource = CSTATE_RES(ACPI_ADDRESS_SPACE_FIXED, 0, 0, 0), |
| }, |
| { |
| .ctype = 2, /* ACPI C2 */ |
| .latency = 50, |
| .power = 10, |
| .resource = CSTATE_RES(ACPI_ADDRESS_SPACE_IO, 8, 0, 0x415), |
| }, |
| { |
| .ctype = 3, /* ACPI C3 */ |
| .latency = 150, |
| .power = 10, |
| .resource = CSTATE_RES(ACPI_ADDRESS_SPACE_IO, 8, 0, 0x419), |
| } |
| }; |
| |
| uint32_t soc_read_sci_irq_select(void) |
| { |
| uintptr_t pmc_bar = soc_read_pmc_base(); |
| return read32((void *)pmc_bar + IRQ_REG); |
| } |
| |
| void soc_write_sci_irq_select(uint32_t scis) |
| { |
| uintptr_t pmc_bar = soc_read_pmc_base(); |
| write32((void *)pmc_bar + IRQ_REG, scis); |
| } |
| |
| acpi_cstate_t *soc_get_cstate_map(size_t *entries) |
| { |
| *entries = ARRAY_SIZE(cstate_map); |
| return cstate_map; |
| } |
| |
| void acpi_create_gnvs(struct global_nvs_t *gnvs) |
| { |
| struct soc_intel_apollolake_config *cfg; |
| cfg = config_of_soc(); |
| |
| /* Clear out GNVS. */ |
| memset(gnvs, 0, sizeof(*gnvs)); |
| |
| if (CONFIG(CONSOLE_CBMEM)) |
| gnvs->cbmc = (uintptr_t) cbmem_find(CBMEM_ID_CONSOLE); |
| |
| if (CONFIG(CHROMEOS)) { |
| /* Initialize Verified Boot data */ |
| chromeos_init_chromeos_acpi(&gnvs->chromeos); |
| gnvs->chromeos.vbt2 = ACTIVE_ECFW_RO; |
| } |
| |
| /* Set unknown wake source */ |
| gnvs->pm1i = ~0ULL; |
| |
| /* CPU core count */ |
| gnvs->pcnt = dev_count_cpu(); |
| |
| /* Enable DPTF based on mainboard configuration */ |
| gnvs->dpte = cfg->dptf_enable; |
| |
| /* Assign address of PERST_0 if GPIO is defined in devicetree */ |
| if (cfg->prt0_gpio != GPIO_PRT0_UDEF) |
| gnvs->prt0 = (uintptr_t) gpio_dwx_address(cfg->prt0_gpio); |
| |
| /* Get sdcard cd GPIO portid if GPIO is defined in devicetree. |
| * Get offset of sdcard cd pin. |
| */ |
| if (cfg->sdcard_cd_gpio) { |
| gnvs->scdp = gpio_get_pad_portid(cfg->sdcard_cd_gpio); |
| gnvs->scdo = gpio_acpi_pin(cfg->sdcard_cd_gpio); |
| } |
| |
| if (CONFIG(SOC_INTEL_COMMON_BLOCK_SGX)) |
| sgx_fill_gnvs(gnvs); |
| |
| /* Fill in Above 4GB MMIO resource */ |
| sa_fill_gnvs(gnvs); |
| } |
| |
| uint32_t acpi_fill_soc_wake(uint32_t generic_pm1_en, |
| const struct chipset_power_state *ps) |
| { |
| /* |
| * WAK_STS bit is set when the system is in one of the sleep states |
| * (via the SLP_EN bit) and an enabled wake event occurs. Upon setting |
| * this bit, the PMC will transition the system to the ON state and |
| * can only be set by hardware and can only be cleared by writing a one |
| * to this bit position. |
| */ |
| |
| generic_pm1_en |= WAK_STS | RTC_EN | PWRBTN_EN; |
| return generic_pm1_en; |
| } |
| |
| int soc_madt_sci_irq_polarity(int sci) |
| { |
| return MP_IRQ_POLARITY_LOW; |
| } |
| |
| void soc_fill_fadt(acpi_fadt_t *fadt) |
| { |
| const struct soc_intel_apollolake_config *cfg; |
| cfg = config_of_soc(); |
| |
| fadt->pm_tmr_blk = ACPI_BASE_ADDRESS + PM1_TMR; |
| |
| fadt->p_lvl2_lat = ACPI_FADT_C2_NOT_SUPPORTED; |
| fadt->p_lvl3_lat = ACPI_FADT_C3_NOT_SUPPORTED; |
| |
| fadt->pm_tmr_len = 4; |
| fadt->duty_width = 3; |
| |
| fadt->iapc_boot_arch = ACPI_FADT_LEGACY_DEVICES | ACPI_FADT_8042; |
| |
| fadt->x_pm_tmr_blk.space_id = 1; |
| fadt->x_pm_tmr_blk.bit_width = fadt->pm_tmr_len * 8; |
| fadt->x_pm_tmr_blk.addrl = ACPI_BASE_ADDRESS + PM1_TMR; |
| fadt->x_pm_tmr_blk.access_size = ACPI_ACCESS_SIZE_DWORD_ACCESS; |
| |
| if (cfg->lpss_s0ix_enable) |
| fadt->flags |= ACPI_FADT_LOW_PWR_IDLE_S0; |
| } |
| |
| static unsigned long soc_fill_dmar(unsigned long current) |
| { |
| struct device *const igfx_dev = pcidev_path_on_root(SA_DEVFN_IGD); |
| uint64_t gfxvtbar = MCHBAR64(GFXVTBAR) & VTBAR_MASK; |
| uint64_t defvtbar = MCHBAR64(DEFVTBAR) & VTBAR_MASK; |
| bool gfxvten = MCHBAR32(GFXVTBAR) & VTBAR_ENABLED; |
| bool defvten = MCHBAR32(DEFVTBAR) & VTBAR_ENABLED; |
| unsigned long tmp; |
| |
| /* IGD has to be enabled, GFXVTBAR set and enabled. */ |
| if (igfx_dev && igfx_dev->enabled && gfxvtbar && gfxvten) { |
| tmp = current; |
| |
| current += acpi_create_dmar_drhd(current, 0, 0, gfxvtbar); |
| current += acpi_create_dmar_ds_pci(current, 0, 2, 0); |
| acpi_dmar_drhd_fixup(tmp, current); |
| |
| /* Add RMRR entry */ |
| tmp = current; |
| current += acpi_create_dmar_rmrr(current, 0, |
| sa_get_gsm_base(), sa_get_tolud_base() - 1); |
| current += acpi_create_dmar_ds_pci(current, 0, 2, 0); |
| acpi_dmar_rmrr_fixup(tmp, current); |
| } |
| |
| /* DEFVTBAR has to be set and enabled. */ |
| if (defvtbar && defvten) { |
| tmp = current; |
| /* |
| * P2SB may already be hidden. There's no clear rule, when. |
| * It is needed to get bus, device and function for IOAPIC and |
| * HPET device which is stored in P2SB device. So unhide it to |
| * get the info and hide it again when done. |
| */ |
| p2sb_unhide(); |
| struct device *p2sb_dev = pcidev_path_on_root(PCH_DEVFN_P2SB); |
| uint16_t ibdf = pci_read_config16(p2sb_dev, PCH_P2SB_IBDF); |
| uint16_t hbdf = pci_read_config16(p2sb_dev, PCH_P2SB_HBDF); |
| p2sb_hide(); |
| |
| current += acpi_create_dmar_drhd(current, |
| DRHD_INCLUDE_PCI_ALL, 0, defvtbar); |
| current += acpi_create_dmar_ds_ioapic(current, |
| 2, ibdf >> 8, PCI_SLOT(ibdf), PCI_FUNC(ibdf)); |
| current += acpi_create_dmar_ds_msi_hpet(current, |
| 0, hbdf >> 8, PCI_SLOT(hbdf), PCI_FUNC(hbdf)); |
| acpi_dmar_drhd_fixup(tmp, current); |
| } |
| |
| return current; |
| } |
| |
| unsigned long sa_write_acpi_tables(struct device *const dev, |
| unsigned long current, |
| struct acpi_rsdp *const rsdp) |
| { |
| acpi_dmar_t *const dmar = (acpi_dmar_t *)current; |
| |
| /* Create DMAR table only if virtualization is enabled. Due to some |
| * constraints on Apollo Lake SoC (some stepping affected), VTD could |
| * not be enabled together with IPU. Doing so will override and disable |
| * VTD while leaving CAPID0_A still reporting that VTD is available. |
| * As in this case FSP will lock VTD to disabled state, we need to make |
| * sure that DMAR table generation only happens when at least DEFVTBAR |
| * is enabled. Otherwise the DMAR header will be generated while the |
| * content of the table will be missing. |
| */ |
| |
| if ((pci_read_config32(dev, CAPID0_A) & VTD_DISABLE) || |
| !(MCHBAR32(DEFVTBAR) & VTBAR_ENABLED)) |
| return current; |
| |
| printk(BIOS_DEBUG, "ACPI: * DMAR\n"); |
| acpi_create_dmar(dmar, DMAR_INTR_REMAP, soc_fill_dmar); |
| current += dmar->header.length; |
| current = acpi_align_current(current); |
| acpi_add_table(rsdp, dmar); |
| current = acpi_align_current(current); |
| |
| return current; |
| } |
| |
| void soc_power_states_generation(int core_id, int cores_per_package) |
| { |
| /* Generate P-state tables */ |
| generate_p_state_entries(core_id, cores_per_package); |
| |
| /* Generate T-state tables */ |
| generate_t_state_entries(core_id, cores_per_package); |
| } |
| |
| static void acpigen_soc_get_dw0_in_local5(uintptr_t addr) |
| { |
| /* |
| * Store (\_SB.GPC0 (addr), Local5) |
| * \_SB.GPC0 is used to read cfg0 value from dw0. It is defined in |
| * gpiolib.asl. |
| */ |
| acpigen_write_store(); |
| acpigen_emit_namestring("\\_SB.GPC0"); |
| acpigen_write_integer(addr); |
| acpigen_emit_byte(LOCAL5_OP); |
| } |
| |
| static int acpigen_soc_get_gpio_val(unsigned int gpio_num, uint32_t mask) |
| { |
| assert(gpio_num < TOTAL_PADS); |
| uintptr_t addr = (uintptr_t) gpio_dwx_address(gpio_num); |
| |
| acpigen_soc_get_dw0_in_local5(addr); |
| |
| /* If (And (Local5, mask)) */ |
| acpigen_write_if_and(LOCAL5_OP, mask); |
| |
| /* Store (One, Local0) */ |
| acpigen_write_store_ops(ONE_OP, LOCAL0_OP); |
| |
| acpigen_pop_len(); /* If */ |
| |
| /* Else */ |
| acpigen_write_else(); |
| |
| /* Store (Zero, Local0) */ |
| acpigen_write_store_ops(ZERO_OP, LOCAL0_OP); |
| |
| acpigen_pop_len(); /* Else */ |
| |
| return 0; |
| } |
| |
| static int acpigen_soc_set_gpio_val(unsigned int gpio_num, uint32_t val) |
| { |
| assert(gpio_num < TOTAL_PADS); |
| uintptr_t addr = (uintptr_t) gpio_dwx_address(gpio_num); |
| |
| acpigen_soc_get_dw0_in_local5(addr); |
| |
| if (val) { |
| /* Or (Local5, PAD_CFG0_TX_STATE, Local5) */ |
| acpigen_write_or(LOCAL5_OP, PAD_CFG0_TX_STATE, LOCAL5_OP); |
| } else { |
| /* Not (PAD_CFG0_TX_STATE, Local6) */ |
| acpigen_write_not(PAD_CFG0_TX_STATE, LOCAL6_OP); |
| |
| /* And (Local5, Local6, Local5) */ |
| acpigen_write_and(LOCAL5_OP, LOCAL6_OP, LOCAL5_OP); |
| } |
| |
| /* |
| * \_SB.SPC0 (addr, Local5) |
| * \_SB.SPC0 is used to write cfg0 value in dw0. It is defined in |
| * gpiolib.asl. |
| */ |
| acpigen_emit_namestring("\\_SB.SPC0"); |
| acpigen_write_integer(addr); |
| acpigen_emit_byte(LOCAL5_OP); |
| |
| return 0; |
| } |
| |
| int acpigen_soc_read_rx_gpio(unsigned int gpio_num) |
| { |
| return acpigen_soc_get_gpio_val(gpio_num, PAD_CFG0_RX_STATE); |
| } |
| |
| int acpigen_soc_get_tx_gpio(unsigned int gpio_num) |
| { |
| return acpigen_soc_get_gpio_val(gpio_num, PAD_CFG0_TX_STATE); |
| } |
| |
| int acpigen_soc_set_tx_gpio(unsigned int gpio_num) |
| { |
| return acpigen_soc_set_gpio_val(gpio_num, 1); |
| } |
| |
| int acpigen_soc_clear_tx_gpio(unsigned int gpio_num) |
| { |
| return acpigen_soc_set_gpio_val(gpio_num, 0); |
| } |