| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2004 Stefan Reinauer <stepan@openbios.org> |
| * Copyright (C) 2005 Nick Barker <nick.barker9@btinternet.com> |
| * Copyright (C) 2007 Rudolf Marek <r.marek@assembler.cz> |
| * |
| * 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 <console/console.h> |
| #include <string.h> |
| #include <arch/acpi.h> |
| #include <arch/acpigen.h> |
| #include <arch/smp/mpspec.h> |
| #include <device/device.h> |
| #include <device/pci_ids.h> |
| #include "i82371eb.h" |
| |
| extern const unsigned char AmlCode[]; |
| |
| static int determine_total_number_of_cores(void) |
| { |
| device_t cpu; |
| int count = 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; |
| } |
| count++; |
| } |
| return count; |
| } |
| |
| void generate_cpu_entries(void) |
| { |
| int len; |
| int len_pr; |
| int cpu, pcontrol_blk=DEFAULT_PMBASE+PCNTRL, plen=6; |
| int numcpus = determine_total_number_of_cores(); |
| printk(BIOS_DEBUG, "Found %d CPU(s).\n", numcpus); |
| |
| /* without the outer scope, furhter ssdt addition will end up |
| * within the processor statement */ |
| len = acpigen_write_scope("\\_PR"); |
| for (cpu=0; cpu < numcpus; cpu++) { |
| len_pr = acpigen_write_processor(cpu, pcontrol_blk, plen); |
| acpigen_patch_len(len_pr - 1); |
| len += len_pr; |
| } |
| acpigen_patch_len(len - 1); |
| } |
| |
| unsigned long __attribute__((weak)) acpi_fill_slit(unsigned long current) |
| { |
| // Not implemented |
| return current; |
| } |
| |
| unsigned long __attribute__((weak)) acpi_fill_srat(unsigned long current) |
| { |
| // Not implemented |
| return current; |
| } |
| |
| unsigned long __attribute__((weak)) acpi_fill_madt(unsigned long current) |
| { |
| /* mainboard has no ioapic */ |
| return current; |
| } |
| |
| unsigned long __attribute__((weak)) acpi_fill_mcfg(unsigned long current) |
| { |
| /* chipset doesn't have mmconfig */ |
| return current; |
| } |
| |
| unsigned long __attribute__((weak)) acpi_fill_ssdt_generator(unsigned long current, |
| const char *oem_table_id) |
| { |
| acpigen_write_mainboard_resources("\\_SB.PCI0.MBRS", "_CRS"); |
| /* generate_cpu_entries() generates weird bytecode and has to come |
| * last or else the following entries will end up inside the |
| * processor scope */ |
| generate_cpu_entries(); |
| return (unsigned long) acpigen_get_current(); |
| } |
| |
| unsigned long __attribute__((weak)) write_acpi_tables(unsigned long start) |
| { |
| unsigned long current; |
| acpi_rsdp_t *rsdp; |
| acpi_rsdt_t *rsdt; |
| acpi_fadt_t *fadt; |
| acpi_facs_t *facs; |
| acpi_madt_t *madt; |
| acpi_header_t *ssdt; |
| acpi_header_t *dsdt; |
| |
| /* Align ACPI tables to 16 byte. */ |
| 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"); |
| |
| /* we should align FACS to 64B as per ACPI specs */ |
| current = ALIGN(current, 64); |
| facs = (acpi_facs_t *) current; |
| current += sizeof(acpi_facs_t); |
| acpi_create_facs(facs); |
| |
| dsdt = (acpi_header_t *)current; |
| memcpy(dsdt, &AmlCode, sizeof(acpi_header_t)); |
| current += dsdt->length; |
| memcpy(dsdt, &AmlCode, dsdt->length); |
| /* Don't trust iasl to get checksum right. */ |
| dsdt->checksum = 0; /* needs to be set to 0 first (part of csum) */ |
| dsdt->checksum = acpi_checksum((u8*)dsdt, dsdt->length); |
| 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); |
| |
| printk(BIOS_DEBUG, "ACPI: * MADT\n"); |
| madt = (acpi_madt_t *) current; |
| acpi_create_madt(madt); |
| if (madt->header.length > sizeof(acpi_madt_t)) { |
| current += madt->header.length; |
| acpi_add_table(rsdp, madt); |
| } else { |
| /* don't add empty madt */ |
| current = (unsigned long)madt; |
| } |
| |
| 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); |
| |
| printk(BIOS_INFO, "ACPI: done.\n"); |
| return current; |
| } |