diff options
author | Uwe Hermann <uwe@hermann-uwe.de> | 2009-06-05 23:02:43 +0000 |
---|---|---|
committer | Uwe Hermann <uwe@hermann-uwe.de> | 2009-06-05 23:02:43 +0000 |
commit | 20a98c9201a0a3699e64c2c2dc4c6259ae948ade (patch) | |
tree | 9e585e237394fb9ed90be336b1cd67a72bcac2ff /src/mainboard/via/epia-m700/acpi_tables.c | |
parent | 3c45a96138974ffd7bf5a8f54baec8a22def11de (diff) |
Initial untested board code for the VIA EPIA-M700 Mini-ITX board.
The patch has been submitted by bari <bari@onelabs.com> and written
by OLPC.
Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4342 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'src/mainboard/via/epia-m700/acpi_tables.c')
-rw-r--r-- | src/mainboard/via/epia-m700/acpi_tables.c | 227 |
1 files changed, 227 insertions, 0 deletions
diff --git a/src/mainboard/via/epia-m700/acpi_tables.c b/src/mainboard/via/epia-m700/acpi_tables.c new file mode 100644 index 0000000000..cb85be2805 --- /dev/null +++ b/src/mainboard/via/epia-m700/acpi_tables.c @@ -0,0 +1,227 @@ +/* + * 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 src\mainboard\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[]; + +/* +These four macro copied from #include <arch/smp/mpspec.h>, I have to do this since "default HAVE_MP_TABLE = 0" in option.lb, +and also since mainboard/via/*.* have no Mptable.c(so that I can not set HAVE_MP_TABLE = 1) as many other mainboard. +So I have to copy these four to here. acpi_fill_madt() need 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_lapics(unsigned long current) +{ + 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((acpi_madt_lapic_t *)current, cpu_index, cpu->path.apic.apic_id); + cpu_index++; + } + 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; + acpi_header_t *ssdt; + + /* Align ACPI tables to 16byte */ + 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); + 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 intel iasl compiler 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(rsdt,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(rsdt, 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(rsdt, hpet); +/* + 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 intel iasl compiler to get this right + ssdt->checksum = acpi_checksum(ssdt, ssdt->length); + acpi_add_table(rsdt, ssdt); + printk_debug("ACPI: * SSDT @ %08x Length %x\n", ssdt, ssdt->length); +*/ + + printk_info("ACPI: done.\n"); + return current; +} + +extern u32 wake_vec; +extern u8 acpi_sleep_type; + +int acpi_is_wakeup(void) { + return (acpi_sleep_type == 3); +} + |