/* * This file is part of the coreboot project. * * Copyright (C) 2012 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. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include extern const unsigned char AmlCode[]; #include "thermal.h" static void acpi_update_thermal_table(global_nvs_t *gnvs) { gnvs->f4of = FAN4_THRESHOLD_OFF; gnvs->f4on = FAN4_THRESHOLD_ON; gnvs->f4pw = FAN4_PWM; gnvs->f3of = FAN3_THRESHOLD_OFF; gnvs->f3on = FAN3_THRESHOLD_ON; gnvs->f3pw = FAN3_PWM; gnvs->f2of = FAN2_THRESHOLD_OFF; gnvs->f2on = FAN2_THRESHOLD_ON; gnvs->f2pw = FAN2_PWM; gnvs->f1of = FAN1_THRESHOLD_OFF; gnvs->f1on = FAN1_THRESHOLD_ON; gnvs->f1pw = FAN1_PWM; gnvs->f0of = FAN0_THRESHOLD_OFF; gnvs->f0on = FAN0_THRESHOLD_ON; gnvs->f0pw = FAN0_PWM; gnvs->tcrt = CRITICAL_TEMPERATURE; gnvs->tpsv = PASSIVE_TEMPERATURE; gnvs->tmax = MAX_TEMPERATURE; } static void acpi_create_gnvs(global_nvs_t *gnvs) { gnvs->apic = 1; gnvs->mpen = 1; /* Enable Multi Processing */ gnvs->pcnt = dev_count_cpu(); /* Enable USB ports in S3 */ gnvs->s3u0 = 1; gnvs->s3u1 = 1; /* Disable USB ports in S5 */ gnvs->s5u0 = 0; gnvs->s5u1 = 0; /* CBMEM TOC */ gnvs->cmem = 0; /* TPM Present */ gnvs->tpmp = 1; /* IGD Displays */ gnvs->ndid = 3; gnvs->did[0] = 0x80000100; gnvs->did[1] = 0x80000240; gnvs->did[2] = 0x80000410; gnvs->did[3] = 0x80000410; gnvs->did[4] = 0x00000005; #if CONFIG_CHROMEOS // TODO(reinauer) this could move elsewhere? chromeos_init_vboot(&(gnvs->chromeos)); /* Emerald Lake has no EC (?) */ gnvs->chromeos.vbt2 = ACTIVE_ECFW_RO; #endif /* Update the mem console pointer. */ gnvs->cbmc = (u32)cbmem_find(CBMEM_ID_CONSOLE); acpi_update_thermal_table(gnvs); } unsigned long acpi_fill_madt(unsigned long current) { /* Local APICs */ current = acpi_create_madt_lapics(current); /* IOAPIC */ current += acpi_create_madt_ioapic((acpi_madt_ioapic_t *) current, 2, IO_APIC_ADDR, 0); /* INT_SRC_OVR */ current += acpi_create_madt_irqoverride((acpi_madt_irqoverride_t *) current, 0, 0, 2, 0); current += acpi_create_madt_irqoverride((acpi_madt_irqoverride_t *) current, 0, 9, 9, MP_IRQ_TRIGGER_LEVEL | MP_IRQ_POLARITY_HIGH); return current; } unsigned long acpi_fill_ssdt_generator(unsigned long current, const char *oem_table_id) { generate_cpu_entries(); return (unsigned long) (acpigen_get_current()); } unsigned long acpi_fill_slit(unsigned long current) { // Not implemented return current; } unsigned long acpi_fill_srat(unsigned long current) { /* No NUMA, no SRAT */ return current; } #define ALIGN_CURRENT current = (ALIGN(current, 16)) unsigned long write_acpi_tables(unsigned long start) { unsigned long current; int i; acpi_rsdp_t *rsdp; acpi_rsdt_t *rsdt; acpi_xsdt_t *xsdt; acpi_hpet_t *hpet; acpi_madt_t *madt; acpi_mcfg_t *mcfg; acpi_fadt_t *fadt; acpi_facs_t *facs; acpi_header_t *ssdt; acpi_header_t *dsdt; global_nvs_t *gnvs; current = start; /* Align ACPI tables to 16byte */ ALIGN_CURRENT; printk(BIOS_INFO, "ACPI: Writing ACPI tables at %lx.\n", start); /* We need at least an RSDP and an RSDT Table */ rsdp = (acpi_rsdp_t *) current; current += sizeof(acpi_rsdp_t); ALIGN_CURRENT; rsdt = (acpi_rsdt_t *) current; current += sizeof(acpi_rsdt_t); ALIGN_CURRENT; xsdt = (acpi_xsdt_t *) current; current += sizeof(acpi_xsdt_t); ALIGN_CURRENT; /* clear all table memory */ memset((void *) start, 0, current - start); acpi_write_rsdp(rsdp, rsdt, xsdt); acpi_write_rsdt(rsdt); acpi_write_xsdt(xsdt); printk(BIOS_DEBUG, "ACPI: * FACS\n"); facs = (acpi_facs_t *) current; current += sizeof(acpi_facs_t); ALIGN_CURRENT; acpi_create_facs(facs); printk(BIOS_DEBUG, "ACPI: * DSDT\n"); dsdt = (acpi_header_t *) current; memcpy(dsdt, &AmlCode, sizeof(acpi_header_t)); current += dsdt->length; memcpy(dsdt, &AmlCode, dsdt->length); ALIGN_CURRENT; printk(BIOS_DEBUG, "ACPI: * FADT\n"); fadt = (acpi_fadt_t *) current; current += sizeof(acpi_fadt_t); ALIGN_CURRENT; acpi_create_fadt(fadt, facs, dsdt); acpi_add_table(rsdp, fadt); /* * We explicitly add these tables later on: */ printk(BIOS_DEBUG, "ACPI: * HPET\n"); hpet = (acpi_hpet_t *) current; current += sizeof(acpi_hpet_t); ALIGN_CURRENT; acpi_create_intel_hpet(hpet); acpi_add_table(rsdp, hpet); /* If we want to use HPET Timers Linux wants an MADT */ printk(BIOS_DEBUG, "ACPI: * MADT\n"); madt = (acpi_madt_t *) current; acpi_create_madt(madt); current += madt->header.length; ALIGN_CURRENT; acpi_add_table(rsdp, madt); printk(BIOS_DEBUG, "ACPI: * MCFG\n"); mcfg = (acpi_mcfg_t *) current; acpi_create_mcfg(mcfg); current += mcfg->header.length; ALIGN_CURRENT; acpi_add_table(rsdp, mcfg); /* Update GNVS pointer into CBMEM */ gnvs = cbmem_find(CBMEM_ID_ACPI_GNVS); if (!gnvs) { printk(BIOS_DEBUG, "ACPI: Could not find CBMEM GNVS\n"); gnvs = (global_nvs_t *)current; } for (i=0; i < dsdt->length; i++) { if (*(u32*)(((u32)dsdt) + i) == 0xC0DEBABE) { printk(BIOS_DEBUG, "ACPI: Patching up global NVS in " "DSDT at offset 0x%04x -> %p\n", i, gnvs); *(u32*)(((u32)dsdt) + i) = (unsigned long)gnvs; acpi_save_gnvs((unsigned long)gnvs); break; } } /* And fill it */ acpi_create_gnvs(gnvs); /* And tell SMI about it */ smm_setup_structures(gnvs, NULL, NULL); current += sizeof(global_nvs_t); ALIGN_CURRENT; /* We patched up the DSDT, so we need to recalculate the checksum */ dsdt->checksum = 0; dsdt->checksum = acpi_checksum((void *)dsdt, dsdt->length); printk(BIOS_DEBUG, "ACPI: * DSDT @ %p Length %x\n", dsdt, dsdt->length); printk(BIOS_DEBUG, "ACPI: * SSDT\n"); ssdt = (acpi_header_t *)current; acpi_create_ssdt_generator(ssdt, ACPI_TABLE_CREATOR); current += ssdt->length; acpi_add_table(rsdp, ssdt); ALIGN_CURRENT; printk(BIOS_DEBUG, "current = %lx\n", current); printk(BIOS_INFO, "ACPI: done.\n"); return current; }