/* * This file is part of the coreboot project. * * LinuxBIOS ACPI Table support * written by Stefan Reinauer * ACPI FADT, FACS, and DSDT table support added by * Nick Barker , and those portions * (C) Copyright 2004 Nick Barker * (C) Copyright 2005 Stefan Reinauer * (C) Copyright 2009 One Laptop per Child, Association, 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 */ /* * Most parts of this file copied from asus\a8v-e_se\acpi_tables.c, * acpi_is_wakeup() is from Rudolf's S3 patch and SSDT was added. */ #include #include #include #include #include #include <../../../northbridge/via/vx800/vx800.h> extern unsigned char AmlCode_dsdt[]; extern unsigned char AmlCode_ssdt[]; extern u32 wake_vec; extern u8 acpi_sleep_type; /* * These four macros are copied from , I have to do this * since the "default CONFIG_HAVE_MP_TABLE = 0" in Options.lb, and also since * mainboard/via/... have no mptable.c (so that I can not set * CONFIG_HAVE_MP_TABLE = 1) as many other mainboards. * So I have to copy these four to here. acpi_fill_madt() needs this. */ #define MP_IRQ_POLARITY_HIGH 0x1 #define MP_IRQ_POLARITY_LOW 0x3 #define MP_IRQ_TRIGGER_EDGE 0x4 #define MP_IRQ_TRIGGER_LEVEL 0xc unsigned long acpi_fill_mcfg(unsigned long current) { /* NO MCFG in VX855, no PCI-E. */ return current; } unsigned long acpi_create_madt_lapic_nmis(unsigned long current, u16 flags, u8 lint) { device_t cpu; int cpu_index = 0; for (cpu = all_devices; cpu; cpu = cpu->next) { if ((cpu->path.type != DEVICE_PATH_APIC) || (cpu->bus->dev->path.type != DEVICE_PATH_APIC_CLUSTER)) { continue; } if (!cpu->enabled) continue; current += acpi_create_madt_lapic_nmi((acpi_madt_lapic_nmi_t *) current, cpu_index, flags, lint); cpu_index++; } return current; } unsigned long acpi_fill_madt(unsigned long current) { unsigned int gsi_base = 0x18; /* Create all subtables for processors. */ current = acpi_create_madt_lapics(current); /* Write SB IOAPIC. */ current += acpi_create_madt_ioapic((acpi_madt_ioapic_t *) current, VX800SB_APIC_ID, VX800SB_APIC_BASE, 0); /* IRQ0 -> APIC IRQ2. */ current += acpi_create_madt_irqoverride((acpi_madt_irqoverride_t *) current, 0, 0, 2, 0x0); /* IRQ9 ACPI active low. */ current += acpi_create_madt_irqoverride((acpi_madt_irqoverride_t *) current, 0, 9, 9, MP_IRQ_TRIGGER_LEVEL | MP_IRQ_POLARITY_LOW); /* Create all subtables for processors. */ current = acpi_create_madt_lapic_nmis(current, MP_IRQ_TRIGGER_EDGE | MP_IRQ_POLARITY_HIGH, 1); return 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. */ } #define ALIGN(x,a) __ALIGN_MASK(x,(typeof(x))(a)-1) #define __ALIGN_MASK(x,mask) (((x)+(mask))&~(mask)) unsigned long write_acpi_tables(unsigned long start) { unsigned long current; acpi_rsdp_t *rsdp; acpi_srat_t *srat; acpi_rsdt_t *rsdt; acpi_mcfg_t *mcfg; acpi_hpet_t *hpet; acpi_madt_t *madt; acpi_fadt_t *fadt; acpi_facs_t *facs; acpi_header_t *dsdt, *ssdt; /* Align ACPI tables to 16 byte. */ start = (start + 0x0f) & -0x10; current = start; printk_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); rsdt = (acpi_rsdt_t *) current; current += sizeof(acpi_rsdt_t); /* Clear all table memory. */ memset((void *)start, 0, current - start); acpi_write_rsdp(rsdp, rsdt, NULL); acpi_write_rsdt(rsdt); /* We explicitly add these tables later on: */ printk_debug("ACPI: * FACS\n"); current = ALIGN(current, 64); facs = (acpi_facs_t *) current; current += sizeof(acpi_facs_t); acpi_create_facs(facs); printk_debug("ACPI: * DSDT\n"); dsdt = (acpi_header_t *) current; current += ((acpi_header_t *) AmlCode_dsdt)->length; memcpy((void *)dsdt, (void *)AmlCode_dsdt, ((acpi_header_t *) AmlCode_dsdt)->length); dsdt->checksum = 0; /* Don't trust iasl to get this right. */ dsdt->checksum = acpi_checksum(dsdt, dsdt->length); printk_debug("ACPI: * DSDT @ %08x Length %x\n", dsdt, dsdt->length); printk_debug("ACPI: * FADT\n"); fadt = (acpi_fadt_t *) current; current += sizeof(acpi_fadt_t); acpi_create_fadt(fadt, facs, dsdt); acpi_add_table(rsdp, fadt); /* If we want to use HPET timers Linux wants it in MADT. */ printk_debug("ACPI: * MADT\n"); madt = (acpi_madt_t *) current; acpi_create_madt(madt); current += madt->header.length; acpi_add_table(rsdp, madt); /* NO MCFG in VX855, no PCI-E. */ printk_debug("ACPI: * HPET\n"); hpet = (acpi_mcfg_t *) current; acpi_create_hpet(hpet); current += hpet->header.length; acpi_add_table(rsdp, hpet); #if 0 printk_debug("ACPI: * SSDT\n"); ssdt = (acpi_header_t *) current; current += ((acpi_header_t *)AmlCode_ssdt)->length; memcpy((void *)ssdt,(void *)AmlCode_ssdt, ((acpi_header_t *)AmlCode_ssdt)->length); ssdt->checksum = 0; /* Don't trust iasl to get this right. */ ssdt->checksum = acpi_checksum(ssdt, ssdt->length); acpi_add_table(rsdp, ssdt); printk_debug("ACPI: * SSDT @ %08x Length %x\n", ssdt, ssdt->length); #endif printk_info("ACPI: done.\n"); return current; } int acpi_is_wakeup(void) { return (acpi_sleep_type == 3); }