| /* |
| * coreboot ACPI Table support |
| * written by Stefan Reinauer <stepan@openbios.org> |
| * ACPI FADT, FACS, and DSDT table support added by |
| * Nick Barker <nick.barker9@btinternet.com>, and those portions |
| * (C) Copyright 2004 Nick Barker |
| * (C) Copyright 2005 Stefan Reinauer |
| * (C) Copyright 2009 Jon Harrison <bothlyn@blueyonder.co.uk> |
| * |
| * 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 via\epia-m\acpi_tables.c, |
| * and via\epia-m700\acpi_tables.c |
| */ |
| |
| #include <console/console.h> |
| #include <string.h> |
| #include <arch/acpi.h> |
| #include <arch/ioapic.h> |
| #include <device/device.h> |
| #include <device/pci.h> |
| #include <device/pci_ids.h> |
| #include "southbridge/via/vt8237r/vt8237r.h" |
| |
| extern const unsigned char AmlCode[]; |
| |
| /* |
| * These 8 macros are copied from <arch/smp/mpspec.h>, I have to do this |
| * since the "CONFIG_GENERATE_MP_TABLE = 0", and also since |
| * mainboard/via/... have no mptable.c (so that I can not set |
| * "CONFIG_GENERATE_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_DEFAULT 0x0 |
| #define MP_IRQ_POLARITY_HIGH 0x1 |
| #define MP_IRQ_POLARITY_LOW 0x3 |
| #define MP_IRQ_POLARITY_MASK 0x3 |
| #define MP_IRQ_TRIGGER_DEFAULT 0x0 |
| #define MP_IRQ_TRIGGER_EDGE 0x4 |
| #define MP_IRQ_TRIGGER_LEVEL 0xc |
| #define MP_IRQ_TRIGGER_MASK 0xc |
| |
| unsigned long acpi_fill_mcfg(unsigned long current) |
| { |
| /* Nothing to do */ |
| return current; |
| } |
| |
| unsigned long acpi_fill_slit(unsigned long current) |
| { |
| // Not implemented |
| 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_CPU_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 = 0x00; |
| |
| /* Create all subtables for processors. */ |
| current = acpi_create_madt_lapics(current); |
| |
| /* Write SB IOAPIC. */ |
| current += acpi_create_madt_ioapic((acpi_madt_ioapic_t *) current, |
| VT8237R_APIC_ID, IO_APIC_ADDR, gsi_base); |
| |
| /* 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_srat(unsigned long current) |
| { |
| /* No NUMA, no SRAT */ |
| return current; |
| } |
| |
| unsigned long write_acpi_tables(unsigned long start) |
| { |
| unsigned long current; |
| acpi_rsdp_t *rsdp; |
| acpi_rsdt_t *rsdt; |
| acpi_madt_t *madt; |
| acpi_fadt_t *fadt; |
| acpi_facs_t *facs; |
| acpi_header_t *dsdt; |
| |
| /* Align ACPI tables to 16byte */ |
| start = ALIGN(start, 16); |
| current = start; |
| |
| 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); |
| 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(BIOS_DEBUG, "ACPI: * FACS\n"); |
| current = ALIGN(current, 64); |
| facs = (acpi_facs_t *) current; |
| current += sizeof(acpi_facs_t); |
| 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); |
| #if 0 |
| dsdt->checksum = 0; // don't trust intel iasl compiler to get this right |
| dsdt->checksum = acpi_checksum(dsdt,dsdt->length); |
| #endif |
| printk(BIOS_DEBUG, "ACPI: * DSDT @ %p Length %x\n",dsdt,dsdt->length); |
| printk(BIOS_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 IOAPIC Support Linux wants it in MADT. */ |
| printk(BIOS_DEBUG, "ACPI: * MADT\n"); |
| madt = (acpi_madt_t *) current; |
| acpi_create_madt(madt); |
| current += madt->header.length; |
| acpi_add_table(rsdp, madt); |
| |
| printk(BIOS_INFO, "ACPI: done.\n"); |
| return current; |
| } |