| /* |
| * This file is part of the coreboot project. |
| * |
| * LinuxBIOS 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 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 <console/console.h> |
| #include <string.h> |
| #include <arch/acpi.h> |
| #include <device/device.h> |
| #include <device/pci_ids.h> |
| #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 <arch/smp/mpspec.h>, 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); |
| } |