/* * This file is part of the coreboot project. * * Copyright (C) 2008-2009 coresystems GmbH * Copyright 2013 Google Inc. * * 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. */ #include <console/console.h> #include <device/device.h> #include <device/pci.h> #include <device/pci_ids.h> #include <device/pci_ops.h> #include <pc80/mc146818rtc.h> #include <pc80/isa-dma.h> #include <pc80/i8259.h> #include <arch/io.h> #include <arch/ioapic.h> #include <arch/acpi.h> #include <cpu/cpu.h> #include <cpu/x86/smm.h> #include <elog.h> #include <cbmem.h> #include <string.h> #include "nvs.h" #include "pch.h" #include <arch/acpigen.h> #include <cbmem.h> #include <drivers/intel/gma/i915.h> #define NMI_OFF 0 #define ENABLE_ACPI_MODE_IN_COREBOOT 0 typedef struct southbridge_intel_lynxpoint_config config_t; /** * Set miscellanous static southbridge features. * * @param dev PCI device with I/O APIC control registers */ static void pch_enable_ioapic(struct device *dev) { u32 reg32; /* Assign unique bus/dev/fn for I/O APIC */ pci_write_config16(dev, LPC_IBDF, PCH_IOAPIC_PCI_BUS << 8 | PCH_IOAPIC_PCI_SLOT << 3); /* Enable ACPI I/O range decode */ pci_write_config8(dev, ACPI_CNTL, ACPI_EN); set_ioapic_id(VIO_APIC_VADDR, 0x02); /* affirm full set of redirection table entries ("write once") */ reg32 = io_apic_read(VIO_APIC_VADDR, 0x01); if (pch_is_lp()) { /* PCH-LP has 39 redirection entries */ reg32 &= ~0x00ff0000; reg32 |= 0x00270000; } io_apic_write(VIO_APIC_VADDR, 0x01, reg32); /* * Select Boot Configuration register (0x03) and * use Processor System Bus (0x01) to deliver interrupts. */ io_apic_write(VIO_APIC_VADDR, 0x03, 0x01); } static void pch_enable_serial_irqs(struct device *dev) { /* Set packet length and toggle silent mode bit for one frame. */ pci_write_config8(dev, SERIRQ_CNTL, (1 << 7) | (1 << 6) | ((21 - 17) << 2) | (0 << 0)); #if !IS_ENABLED(CONFIG_SERIRQ_CONTINUOUS_MODE) pci_write_config8(dev, SERIRQ_CNTL, (1 << 7) | (0 << 6) | ((21 - 17) << 2) | (0 << 0)); #endif } /* PIRQ[n]_ROUT[3:0] - PIRQ Routing Control * 0x00 - 0000 = Reserved * 0x01 - 0001 = Reserved * 0x02 - 0010 = Reserved * 0x03 - 0011 = IRQ3 * 0x04 - 0100 = IRQ4 * 0x05 - 0101 = IRQ5 * 0x06 - 0110 = IRQ6 * 0x07 - 0111 = IRQ7 * 0x08 - 1000 = Reserved * 0x09 - 1001 = IRQ9 * 0x0A - 1010 = IRQ10 * 0x0B - 1011 = IRQ11 * 0x0C - 1100 = IRQ12 * 0x0D - 1101 = Reserved * 0x0E - 1110 = IRQ14 * 0x0F - 1111 = IRQ15 * PIRQ[n]_ROUT[7] - PIRQ Routing Control * 0x80 - The PIRQ is not routed. */ static void pch_pirq_init(device_t dev) { device_t irq_dev; /* Get the chip configuration */ config_t *config = dev->chip_info; pci_write_config8(dev, PIRQA_ROUT, config->pirqa_routing); pci_write_config8(dev, PIRQB_ROUT, config->pirqb_routing); pci_write_config8(dev, PIRQC_ROUT, config->pirqc_routing); pci_write_config8(dev, PIRQD_ROUT, config->pirqd_routing); pci_write_config8(dev, PIRQE_ROUT, config->pirqe_routing); pci_write_config8(dev, PIRQF_ROUT, config->pirqf_routing); pci_write_config8(dev, PIRQG_ROUT, config->pirqg_routing); pci_write_config8(dev, PIRQH_ROUT, config->pirqh_routing); /* Eric Biederman once said we should let the OS do this. * I am not so sure anymore he was right. */ for (irq_dev = all_devices; irq_dev; irq_dev = irq_dev->next) { u8 int_pin=0, int_line=0; if (!irq_dev->enabled || irq_dev->path.type != DEVICE_PATH_PCI) continue; int_pin = pci_read_config8(irq_dev, PCI_INTERRUPT_PIN); switch (int_pin) { case 1: /* INTA# */ int_line = config->pirqa_routing; break; case 2: /* INTB# */ int_line = config->pirqb_routing; break; case 3: /* INTC# */ int_line = config->pirqc_routing; break; case 4: /* INTD# */ int_line = config->pirqd_routing; break; } if (!int_line) continue; pci_write_config8(irq_dev, PCI_INTERRUPT_LINE, int_line); } } static void pch_gpi_routing(device_t dev) { /* Get the chip configuration */ config_t *config = dev->chip_info; u32 reg32 = 0; /* An array would be much nicer here, or some * other method of doing this. */ reg32 |= (config->gpi0_routing & 0x03) << 0; reg32 |= (config->gpi1_routing & 0x03) << 2; reg32 |= (config->gpi2_routing & 0x03) << 4; reg32 |= (config->gpi3_routing & 0x03) << 6; reg32 |= (config->gpi4_routing & 0x03) << 8; reg32 |= (config->gpi5_routing & 0x03) << 10; reg32 |= (config->gpi6_routing & 0x03) << 12; reg32 |= (config->gpi7_routing & 0x03) << 14; reg32 |= (config->gpi8_routing & 0x03) << 16; reg32 |= (config->gpi9_routing & 0x03) << 18; reg32 |= (config->gpi10_routing & 0x03) << 20; reg32 |= (config->gpi11_routing & 0x03) << 22; reg32 |= (config->gpi12_routing & 0x03) << 24; reg32 |= (config->gpi13_routing & 0x03) << 26; reg32 |= (config->gpi14_routing & 0x03) << 28; reg32 |= (config->gpi15_routing & 0x03) << 30; pci_write_config32(dev, GPIO_ROUT, reg32); } static void pch_power_options(device_t dev) { u8 reg8; u16 reg16; u32 reg32; const char *state; /* Get the chip configuration */ config_t *config = dev->chip_info; u16 pmbase = get_pmbase(); int pwr_on=CONFIG_MAINBOARD_POWER_ON_AFTER_POWER_FAIL; int nmi_option; /* Which state do we want to goto after g3 (power restored)? * 0 == S0 Full On * 1 == S5 Soft Off * * If the option is not existent (Laptops), use Kconfig setting. */ get_option(&pwr_on, "power_on_after_fail"); pwr_on = MAINBOARD_POWER_KEEP; reg16 = pci_read_config16(dev, GEN_PMCON_3); reg16 &= 0xfffe; switch (pwr_on) { case MAINBOARD_POWER_OFF: reg16 |= 1; state = "off"; break; case MAINBOARD_POWER_ON: reg16 &= ~1; state = "on"; break; case MAINBOARD_POWER_KEEP: reg16 &= ~1; state = "state keep"; break; default: state = "undefined"; } reg16 &= ~(3 << 4); /* SLP_S4# Assertion Stretch 4s */ reg16 |= (1 << 3); /* SLP_S4# Assertion Stretch Enable */ reg16 &= ~(1 << 10); reg16 |= (1 << 11); /* SLP_S3# Min Assertion Width 50ms */ reg16 |= (1 << 12); /* Disable SLP stretch after SUS well */ pci_write_config16(dev, GEN_PMCON_3, reg16); printk(BIOS_INFO, "Set power %s after power failure.\n", state); /* Set up NMI on errors. */ reg8 = inb(0x61); reg8 &= 0x0f; /* Higher Nibble must be 0 */ reg8 &= ~(1 << 3); /* IOCHK# NMI Enable */ // reg8 &= ~(1 << 2); /* PCI SERR# Enable */ reg8 |= (1 << 2); /* PCI SERR# Disable for now */ outb(reg8, 0x61); reg8 = inb(0x70); nmi_option = NMI_OFF; get_option(&nmi_option, "nmi"); if (nmi_option) { printk(BIOS_INFO, "NMI sources enabled.\n"); reg8 &= ~(1 << 7); /* Set NMI. */ } else { printk(BIOS_INFO, "NMI sources disabled.\n"); reg8 |= (1 << 7); /* Can't mask NMI from PCI-E and NMI_NOW */ } outb(reg8, 0x70); /* Enable CPU_SLP# and Intel Speedstep, set SMI# rate down */ reg16 = pci_read_config16(dev, GEN_PMCON_1); reg16 &= ~(3 << 0); // SMI# rate 1 minute reg16 &= ~(1 << 10); // Disable BIOS_PCI_EXP_EN for native PME pci_write_config16(dev, GEN_PMCON_1, reg16); /* * Set the board's GPI routing on LynxPoint-H. * This is done as part of GPIO configuration on LynxPoint-LP. */ if (pch_is_lp()) pch_gpi_routing(dev); /* GPE setup based on device tree configuration */ enable_all_gpe(config->gpe0_en_1, config->gpe0_en_2, config->gpe0_en_3, config->gpe0_en_4); /* SMI setup based on device tree configuration */ enable_alt_smi(config->alt_gp_smi_en); /* Set up power management block and determine sleep mode */ reg32 = inl(pmbase + 0x04); // PM1_CNT reg32 &= ~(7 << 10); // SLP_TYP reg32 |= (1 << 0); // SCI_EN outl(reg32, pmbase + 0x04); /* Clear magic status bits to prevent unexpected wake */ reg32 = RCBA32(0x3310); reg32 |= (1 << 4)|(1 << 5)|(1 << 0); RCBA32(0x3310) = reg32; reg16 = RCBA16(0x3f02); reg16 &= ~0xf; RCBA16(0x3f02) = reg16; } static void pch_rtc_init(struct device *dev) { int rtc_failed = rtc_failure(); if (rtc_failed) { if (IS_ENABLED(CONFIG_ELOG)) elog_add_event(ELOG_TYPE_RTC_RESET); pci_update_config8(dev, GEN_PMCON_3, ~RTC_BATTERY_DEAD, 0); } printk(BIOS_DEBUG, "rtc_failed = 0x%x\n", rtc_failed); cmos_init(rtc_failed); } /* LynxPoint PCH Power Management init */ static void lpt_pm_init(struct device *dev) { printk(BIOS_DEBUG, "LynxPoint PM init\n"); } const struct rcba_config_instruction lpt_lp_pm_rcba[] = { RCBA_RMW_REG_32(0x232c, ~1, 0x00000000), RCBA_RMW_REG_32(0x1100, ~0xc000, 0xc000), RCBA_RMW_REG_32(0x1100, ~0, 0x00000100), RCBA_RMW_REG_32(0x1100, ~0, 0x0000003f), RCBA_RMW_REG_32(0x2320, ~0x60, 0x10), RCBA_RMW_REG_32(0x3314, 0, 0x00012fff), RCBA_RMW_REG_32(0x3318, 0, 0x0dcf0400), RCBA_RMW_REG_32(0x3324, 0, 0x04000000), RCBA_RMW_REG_32(0x3368, 0, 0x00041400), RCBA_RMW_REG_32(0x3388, 0, 0x3f8ddbff), RCBA_RMW_REG_32(0x33ac, 0, 0x00007001), RCBA_RMW_REG_32(0x33b0, 0, 0x00181900), RCBA_RMW_REG_32(0x33c0, 0, 0x00060A00), RCBA_RMW_REG_32(0x33d0, 0, 0x06200840), RCBA_RMW_REG_32(0x3a28, 0, 0x01010101), RCBA_RMW_REG_32(0x3a2c, 0, 0x04040404), RCBA_RMW_REG_32(0x2b1c, 0, 0x03808033), RCBA_RMW_REG_32(0x2b34, 0, 0x80000009), RCBA_RMW_REG_32(0x3348, 0, 0x022ddfff), RCBA_RMW_REG_32(0x334c, 0, 0x00000001), RCBA_RMW_REG_32(0x3358, 0, 0x0001c000), RCBA_RMW_REG_32(0x3380, 0, 0x3f8ddbff), RCBA_RMW_REG_32(0x3384, 0, 0x0001c7e1), RCBA_RMW_REG_32(0x338c, 0, 0x0001c7e1), RCBA_RMW_REG_32(0x3398, 0, 0x0001c000), RCBA_RMW_REG_32(0x33a8, 0, 0x00181900), RCBA_RMW_REG_32(0x33dc, 0, 0x00080000), RCBA_RMW_REG_32(0x33e0, 0, 0x00000001), RCBA_RMW_REG_32(0x3a20, 0, 0x00000404), RCBA_RMW_REG_32(0x3a24, 0, 0x01010101), RCBA_RMW_REG_32(0x3a30, 0, 0x01010101), RCBA_RMW_REG_32(0x0410, ~0, 0x00000003), RCBA_RMW_REG_32(0x2618, ~0, 0x08000000), RCBA_RMW_REG_32(0x2300, ~0, 0x00000002), RCBA_RMW_REG_32(0x2600, ~0, 0x00000008), RCBA_RMW_REG_32(0x33b4, 0, 0x00007001), RCBA_RMW_REG_32(0x3350, 0, 0x022ddfff), RCBA_RMW_REG_32(0x3354, 0, 0x00000001), RCBA_RMW_REG_32(0x33d4, ~0, 0x08000000), /* Power Optimizer */ RCBA_RMW_REG_32(0x33c8, ~0, 0x00000080), /* Power Optimizer */ RCBA_RMW_REG_32(0x2b10, 0, 0x0000883c), /* Power Optimizer */ RCBA_RMW_REG_32(0x2b14, 0, 0x1e0a4616), /* Power Optimizer */ RCBA_RMW_REG_32(0x2b24, 0, 0x40000005), /* Power Optimizer */ RCBA_RMW_REG_32(0x2b20, 0, 0x0005db01), /* Power Optimizer */ RCBA_RMW_REG_32(0x3a80, 0, 0x05145005), RCBA_END_CONFIG }; /* LynxPoint LP PCH Power Management init */ static void lpt_lp_pm_init(struct device *dev) { struct southbridge_intel_lynxpoint_config *config = dev->chip_info; u32 data; printk(BIOS_DEBUG, "LynxPoint LP PM init\n"); pci_write_config8(dev, 0xa9, 0x46); pch_config_rcba(lpt_lp_pm_rcba); pci_write_config32(dev, 0xac, pci_read_config32(dev, 0xac) | (1 << 21)); pch_iobp_update(0xED00015C, ~(1 << 11), 0x00003700); pch_iobp_update(0xED000118, ~0UL, 0x00c00000); pch_iobp_update(0xED000120, ~0UL, 0x00240000); pch_iobp_update(0xCA000000, ~0UL, 0x00000009); /* Set RCBA CIR28 0x3A84 based on SATA port enables */ data = 0x00001005; /* Port 3 and 2 disabled */ if ((config->sata_port_map & ((1 << 3)|(1 << 2))) == 0) data |= (1 << 24) | (1 << 26); /* Port 1 and 0 disabled */ if ((config->sata_port_map & ((1 << 1)|(1 << 0))) == 0) data |= (1 << 20) | (1 << 18); RCBA32(0x3a84) = data; /* Set RCBA 0x2b1c[29]=1 if DSP disabled */ if (RCBA32(FD) & PCH_DISABLE_ADSPD) RCBA32_OR(0x2b1c, (1 << 29)); /* Lock */ RCBA32_OR(0x3a6c, 0x00000001); /* Set RCBA 0x33D4 after other setup */ RCBA32_OR(0x33d4, 0x2fff2fb1); /* Set RCBA 0x33C8[15]=1 as last step */ RCBA32_OR(0x33c8, (1 << 15)); } static void enable_hpet(struct device *const dev) { u32 reg32; size_t i; /* Assign unique bus/dev/fn for each HPET */ for (i = 0; i < 8; ++i) pci_write_config16(dev, LPC_HnBDF(i), PCH_HPET_PCI_BUS << 8 | PCH_HPET_PCI_SLOT << 3 | i); /* Move HPET to default address 0xfed00000 and enable it */ reg32 = RCBA32(HPTC); reg32 |= (1 << 7); // HPET Address Enable reg32 &= ~(3 << 0); RCBA32(HPTC) = reg32; /* Read it back to stick. It's affected by posted write syndrome. */ reg32 = RCBA32(HPTC); } static void enable_clock_gating(device_t dev) { /* LynxPoint Mobile */ u32 reg32; u16 reg16; /* DMI */ RCBA32_AND_OR(0x2234, ~0UL, 0xf); reg16 = pci_read_config16(dev, GEN_PMCON_1); reg16 |= (1 << 11) | (1 << 12) | (1 << 14); reg16 |= (1 << 2); // PCI CLKRUN# Enable pci_write_config16(dev, GEN_PMCON_1, reg16); RCBA32_OR(0x900, (1 << 14)); reg32 = RCBA32(CG); reg32 |= (1 << 22); // HDA Dynamic reg32 |= (1UL << 31); // LPC Dynamic reg32 |= (1 << 16); // PCIe Dynamic reg32 |= (1 << 27); // HPET Dynamic reg32 |= (1 << 28); // GPIO Dynamic RCBA32(CG) = reg32; RCBA32_OR(0x38c0, 0x7); // SPI Dynamic } static void enable_lp_clock_gating(device_t dev) { /* LynxPoint LP */ u32 reg32; u16 reg16; /* DMI */ RCBA32_AND_OR(0x2234, ~0UL, 0xf); reg16 = pci_read_config16(dev, GEN_PMCON_1); reg16 &= ~((1 << 11) | (1 << 14)); reg16 |= (1 << 5) | (1 << 6) | (1 << 7) | (1 << 12) | (1 << 13); reg16 |= (1 << 2); // PCI CLKRUN# Enable pci_write_config16(dev, GEN_PMCON_1, reg16); reg32 = pci_read_config32(dev, 0x64); reg32 |= (1 << 6); pci_write_config32(dev, 0x64, reg32); /* * RCBA + 0x2614[27:25,14:13,10,8] = 101,11,1,1 * RCBA + 0x2614[23:16] = 0x20 * RCBA + 0x2614[30:28] = 0x0 * RCBA + 0x2614[26] = 1 (IF 0:2.0@0x08 >= 0x0b) */ RCBA32_AND_OR(0x2614, 0x8bffffff, 0x0a206500); /* Check for LPT-LP B2 stepping and 0:31.0@0xFA > 4 */ if (pci_read_config8(dev_find_slot(0, PCI_DEVFN(2, 0)), 0x8) >= 0x0b) RCBA32_OR(0x2614, (1 << 26)); RCBA32_OR(0x900, 0x0000031f); reg32 = RCBA32(CG); if (RCBA32(0x3454) & (1 << 4)) reg32 &= ~(1 << 29); // LPC Dynamic else reg32 |= (1 << 29); // LPC Dynamic reg32 |= (1UL << 31); // LP LPC reg32 |= (1 << 30); // LP BLA reg32 |= (1 << 28); // GPIO Dynamic reg32 |= (1 << 27); // HPET Dynamic reg32 |= (1 << 26); // Generic Platform Event Clock if (RCBA32(BUC) & PCH_DISABLE_GBE) reg32 |= (1 << 23); // GbE Static reg32 |= (1 << 22); // HDA Dynamic reg32 |= (1 << 16); // PCI Dynamic RCBA32(CG) = reg32; RCBA32_OR(0x3434, 0x7); // LP LPC RCBA32_AND_OR(0x333c, 0xffcfffff, 0x00c00000); // SATA RCBA32_OR(0x38c0, 0x3c07); // SPI Dynamic pch_iobp_update(0xCF000000, ~0UL, 0x00007001); pch_iobp_update(0xCE00C000, ~1UL, 0x00000000); // bit0=0 in BWG 1.4.0 } static void pch_set_acpi_mode(void) { #if IS_ENABLED(CONFIG_HAVE_SMI_HANDLER) if (!acpi_is_wakeup_s3()) { #if ENABLE_ACPI_MODE_IN_COREBOOT printk(BIOS_DEBUG, "Enabling ACPI via APMC:\n"); outb(APM_CNT_ACPI_ENABLE, APM_CNT); printk(BIOS_DEBUG, "done.\n"); #else printk(BIOS_DEBUG, "Disabling ACPI via APMC:\n"); outb(APM_CNT_ACPI_DISABLE, APM_CNT); printk(BIOS_DEBUG, "done.\n"); #endif } #endif /* CONFIG_HAVE_SMI_HANDLER */ } static void pch_disable_smm_only_flashing(struct device *dev) { u8 reg8; printk(BIOS_SPEW, "Enabling BIOS updates outside of SMM... "); reg8 = pci_read_config8(dev, 0xdc); /* BIOS_CNTL */ reg8 &= ~(1 << 5); pci_write_config8(dev, 0xdc, reg8); } static void pch_fixups(struct device *dev) { u8 gen_pmcon_2; /* Indicate DRAM init done for MRC S3 to know it can resume */ gen_pmcon_2 = pci_read_config8(dev, GEN_PMCON_2); gen_pmcon_2 |= (1 << 7); pci_write_config8(dev, GEN_PMCON_2, gen_pmcon_2); /* * Enable DMI ASPM in the PCH */ RCBA32_AND_OR(0x2304, ~(1 << 10), 0); RCBA32_OR(0x21a4, (1 << 11)|(1 << 10)); RCBA32_OR(0x21a8, 0x3); } static void lpc_init(struct device *dev) { printk(BIOS_DEBUG, "pch: lpc_init\n"); /* Set the value for PCI command register. */ pci_write_config16(dev, PCI_COMMAND, 0x000f); /* IO APIC initialization. */ pch_enable_ioapic(dev); pch_enable_serial_irqs(dev); /* Setup the PIRQ. */ pch_pirq_init(dev); /* Setup power options. */ pch_power_options(dev); /* Initialize power management */ if (pch_is_lp()) { lpt_lp_pm_init(dev); enable_lp_clock_gating(dev); } else { lpt_pm_init(dev); enable_clock_gating(dev); } /* Initialize the real time clock. */ pch_rtc_init(dev); /* Initialize ISA DMA. */ isa_dma_init(); /* Initialize the High Precision Event Timers, if present. */ enable_hpet(dev); setup_i8259(); /* Interrupt 9 should be level triggered (SCI) */ i8259_configure_irq_trigger(9, 1); pch_disable_smm_only_flashing(dev); pch_set_acpi_mode(); pch_fixups(dev); } static void pch_lpc_add_mmio_resources(device_t dev) { u32 reg; struct resource *res; const u32 default_decode_base = IO_APIC_ADDR; /* * Just report all resources from IO-APIC base to 4GiB. Don't mark * them reserved as that may upset the OS if this range is marked * as reserved in the e820. */ res = new_resource(dev, OIC); res->base = default_decode_base; res->size = 0 - default_decode_base; res->flags = IORESOURCE_MEM | IORESOURCE_ASSIGNED | IORESOURCE_FIXED; /* RCBA */ if ((uintptr_t)DEFAULT_RCBA < default_decode_base) { res = new_resource(dev, RCBA); res->base = (resource_t)(uintptr_t)DEFAULT_RCBA; res->size = 16 * 1024; res->flags = IORESOURCE_MEM | IORESOURCE_ASSIGNED | IORESOURCE_FIXED | IORESOURCE_RESERVE; } /* Check LPC Memory Decode register. */ reg = pci_read_config32(dev, LGMR); if (reg & 1) { reg &= ~0xffff; if (reg < default_decode_base) { res = new_resource(dev, LGMR); res->base = reg; res->size = 16 * 1024; res->flags = IORESOURCE_MEM | IORESOURCE_ASSIGNED | IORESOURCE_FIXED | IORESOURCE_RESERVE; } } } /* Default IO range claimed by the LPC device. The upper bound is exclusive. */ #define LPC_DEFAULT_IO_RANGE_LOWER 0 #define LPC_DEFAULT_IO_RANGE_UPPER 0x1000 static inline int pch_io_range_in_default(u16 base, u16 size) { /* Does it start above the range? */ if (base >= LPC_DEFAULT_IO_RANGE_UPPER) return 0; /* Is it entirely contained? */ if (base >= LPC_DEFAULT_IO_RANGE_LOWER && (base + size) < LPC_DEFAULT_IO_RANGE_UPPER) return 1; /* This will return not in range for partial overlaps. */ return 0; } /* * Note: this function assumes there is no overlap with the default LPC device's * claimed range: LPC_DEFAULT_IO_RANGE_LOWER -> LPC_DEFAULT_IO_RANGE_UPPER. */ static void pch_lpc_add_io_resource(device_t dev, u16 base, u16 size, int index) { struct resource *res; if (pch_io_range_in_default(base, size)) return; res = new_resource(dev, index); res->base = base; res->size = size; res->flags = IORESOURCE_IO | IORESOURCE_ASSIGNED | IORESOURCE_FIXED; } static void pch_lpc_add_gen_io_resources(device_t dev, int reg_value, int index) { /* * Check if the register is enabled. If so and the base exceeds the * device's deafult claim range add the resoure. */ if (reg_value & 1) { u16 base = reg_value & 0xfffc; u16 size = (0x3 | ((reg_value >> 16) & 0xfc)) + 1; pch_lpc_add_io_resource(dev, base, size, index); } } static void pch_lpc_add_io_resources(device_t dev) { struct resource *res; config_t *config = dev->chip_info; /* Add the default claimed IO range for the LPC device. */ res = new_resource(dev, 0); res->base = LPC_DEFAULT_IO_RANGE_LOWER; res->size = LPC_DEFAULT_IO_RANGE_UPPER - LPC_DEFAULT_IO_RANGE_LOWER; res->flags = IORESOURCE_IO | IORESOURCE_ASSIGNED | IORESOURCE_FIXED; /* GPIOBASE */ pch_lpc_add_io_resource(dev, get_gpiobase(), DEFAULT_GPIOSIZE, GPIO_BASE); /* PMBASE */ pch_lpc_add_io_resource(dev, get_pmbase(), 256, PMBASE); /* LPC Generic IO Decode range. */ pch_lpc_add_gen_io_resources(dev, config->gen1_dec, LPC_GEN1_DEC); pch_lpc_add_gen_io_resources(dev, config->gen2_dec, LPC_GEN2_DEC); pch_lpc_add_gen_io_resources(dev, config->gen3_dec, LPC_GEN3_DEC); pch_lpc_add_gen_io_resources(dev, config->gen4_dec, LPC_GEN4_DEC); } static void pch_lpc_read_resources(device_t dev) { global_nvs_t *gnvs; /* Get the normal PCI resources of this device. */ pci_dev_read_resources(dev); /* Add non-standard MMIO resources. */ pch_lpc_add_mmio_resources(dev); /* Add IO resources. */ pch_lpc_add_io_resources(dev); /* Allocate ACPI NVS in CBMEM */ gnvs = cbmem_add(CBMEM_ID_ACPI_GNVS, sizeof(global_nvs_t)); if (!acpi_is_wakeup_s3() && gnvs) memset(gnvs, 0, sizeof(global_nvs_t)); } static void pch_lpc_enable(device_t dev) { /* Enable PCH Display Port */ RCBA16(DISPBDF) = 0x0010; RCBA32_OR(FD2, PCH_ENABLE_DBDF); pch_enable(dev); } static void set_subsystem(device_t dev, unsigned vendor, unsigned device) { if (!vendor || !device) { pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID, pci_read_config32(dev, PCI_VENDOR_ID)); } else { pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID, ((device & 0xffff) << 16) | (vendor & 0xffff)); } } static void southbridge_inject_dsdt(device_t dev) { global_nvs_t *gnvs; gnvs = cbmem_find(CBMEM_ID_ACPI_GNVS); if (!gnvs) { gnvs = cbmem_add(CBMEM_ID_ACPI_GNVS, sizeof(*gnvs)); if (gnvs) memset(gnvs, 0, sizeof(*gnvs)); } if (gnvs) { const struct i915_gpu_controller_info *gfx = intel_gma_get_controller_info(); acpi_create_gnvs(gnvs); gnvs->apic = 1; gnvs->mpen = 1; /* Enable Multi Processing */ gnvs->pcnt = dev_count_cpu(); #if IS_ENABLED(CONFIG_CHROMEOS) chromeos_init_vboot(&(gnvs->chromeos)); #endif /* Update the mem console pointer. */ gnvs->cbmc = (u32)cbmem_find(CBMEM_ID_CONSOLE); gnvs->ndid = gfx->ndid; memcpy(gnvs->did, gfx->did, sizeof(gnvs->did)); acpi_save_gnvs((unsigned long)gnvs); /* And tell SMI about it */ smm_setup_structures(gnvs, NULL, NULL); /* Add it to DSDT. */ acpigen_write_scope("\\"); acpigen_write_name_dword("NVSA", (u32) gnvs); acpigen_pop_len(); } } static unsigned long southbridge_write_acpi_tables(device_t device, unsigned long start, struct acpi_rsdp *rsdp) { unsigned long current; acpi_hpet_t *hpet; acpi_header_t *ssdt; current = start; /* Align ACPI tables to 16byte */ current = acpi_align_current(current); /* * We explicitly add these tables later on: */ printk(BIOS_DEBUG, "ACPI: * HPET\n"); hpet = (acpi_hpet_t *) current; current += sizeof(acpi_hpet_t); current = acpi_align_current(current); acpi_create_intel_hpet(hpet); acpi_add_table(rsdp, hpet); current = acpi_align_current(current); printk(BIOS_DEBUG, "ACPI: * SSDT2\n"); ssdt = (acpi_header_t *)current; acpi_create_serialio_ssdt(ssdt); current += ssdt->length; acpi_add_table(rsdp, ssdt); current = acpi_align_current(current); printk(BIOS_DEBUG, "current = %lx\n", current); return current; } static struct pci_operations pci_ops = { .set_subsystem = set_subsystem, }; static struct device_operations device_ops = { .read_resources = pch_lpc_read_resources, .set_resources = pci_dev_set_resources, .enable_resources = pci_dev_enable_resources, .acpi_inject_dsdt_generator = southbridge_inject_dsdt, .write_acpi_tables = southbridge_write_acpi_tables, .init = lpc_init, .enable = pch_lpc_enable, .scan_bus = scan_lpc_bus, .ops_pci = &pci_ops, }; /* IDs for LPC device of Intel 8 Series Chipset (Lynx Point) */ static const unsigned short pci_device_ids[] = { 0x8c41, /* Mobile Full Featured Engineering Sample. */ 0x8c42, /* Desktop Full Featured Engineering Sample. */ 0x8c44, /* Z87 SKU */ 0x8c46, /* Z85 SKU */ 0x8c49, /* HM86 SKU */ 0x8c4a, /* H87 SKU */ 0x8c4b, /* HM87 SKU */ 0x8c4c, /* Q85 SKU */ 0x8c4e, /* Q87 SKU */ 0x8c4f, /* QM87 SKU */ 0x9c41, /* LP Full Featured Engineering Sample */ 0x9c43, /* LP Premium SKU */ 0x9c45, /* LP Mainstream SKU */ 0x9c47, /* LP Value SKU */ 0 }; static const struct pci_driver pch_lpc __pci_driver = { .ops = &device_ops, .vendor = PCI_VENDOR_ID_INTEL, .devices = pci_device_ids, };