2 * This file is part of the coreboot project.
4 * Copyright (C) 2007-2009 coresystems GmbH
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; version 2 of the License.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 #include <console/console.h>
23 #include <arch/acpi.h>
24 #include <arch/ioapic.h>
25 #include <arch/acpigen.h>
26 #include <arch/smp/mpspec.h>
27 #include <device/device.h>
28 #include <device/pci.h>
29 #include <device/pci_ids.h>
30 #include <cpu/x86/msr.h>
33 extern const unsigned char AmlCode[];
34 #if CONFIG_HAVE_ACPI_SLIC
35 unsigned long acpi_create_slic(unsigned long current);
38 #include "southbridge/intel/i82801gx/nvs.h" // FIXME: our own copy of nvs would be nice
40 static void acpi_create_gnvs(global_nvs_t * gnvs)
42 memset((void *)gnvs, 0, sizeof(*gnvs));
44 gnvs->mpen = 1; /* Enable Multi Processing. */
46 /* Enable both COM ports. */
52 gnvs->did[0] = 0x80000100;
53 gnvs->did[1] = 0x80000240;
54 gnvs->did[2] = 0x80000410;
55 gnvs->did[3] = 0x80000410;
56 gnvs->did[4] = 0x00000005;
59 static void acpi_create_intel_hpet(acpi_hpet_t *hpet)
61 #define HPET_ADDR 0xfed00000ULL
62 acpi_header_t *header = &(hpet->header);
63 acpi_addr_t *addr = &(hpet->addr);
65 memset((void *)hpet, 0, sizeof(acpi_hpet_t));
67 /* Fill out header fields. */
68 memcpy(header->signature, "HPET", 4);
69 memcpy(header->oem_id, OEM_ID, 6);
70 memcpy(header->oem_table_id, "COREBOOT", 8);
71 memcpy(header->asl_compiler_id, ASLC, 4);
73 header->length = sizeof(acpi_hpet_t);
76 /* Fill out HPET address. */
77 addr->space_id = 0; /* Memory */
80 addr->addrl = HPET_ADDR & 0xffffffff;
81 addr->addrh = HPET_ADDR >> 32;
83 hpet->id = 0x8086a201; /* Intel */
85 hpet->min_tick = 0x0080;
87 header->checksum = acpi_checksum((void *)hpet, sizeof(acpi_hpet_t));
90 unsigned long acpi_fill_madt(unsigned long current)
93 current = acpi_create_madt_lapics(current);
96 current += acpi_create_madt_ioapic((acpi_madt_ioapic_t *) current,
100 current += acpi_create_madt_irqoverride((acpi_madt_irqoverride_t *)
101 current, 0, 0, 2, 0);
102 current += acpi_create_madt_irqoverride((acpi_madt_irqoverride_t *)
104 MP_IRQ_TRIGGER_LEVEL |
105 MP_IRQ_POLARITY_HIGH);
110 unsigned long acpi_fill_ssdt_generator(unsigned long current,
111 const char *oem_table_id)
113 generate_cpu_entries();
114 return (unsigned long)(acpigen_get_current());
117 unsigned long acpi_fill_slit(unsigned long current)
119 /* Not implemented. */
123 unsigned long acpi_fill_srat(unsigned long current)
125 /* No NUMA, no SRAT */
129 void smm_setup_structures(void *gnvs, void *tcg, void *smi1);
131 #define ALIGN_CURRENT current = ((current + 0x0f) & -0x10)
132 unsigned long write_acpi_tables(unsigned long start)
134 unsigned long current;
145 #if CONFIG_HAVE_ACPI_SLIC
153 /* Align ACPI tables to 16byte */
156 printk(BIOS_INFO, "ACPI: Writing ACPI tables at %lx.\n", start);
158 /* We need at least an RSDP and an RSDT Table */
159 rsdp = (acpi_rsdp_t *) current;
160 current += sizeof(acpi_rsdp_t);
162 rsdt = (acpi_rsdt_t *) current;
163 current += sizeof(acpi_rsdt_t);
165 xsdt = (acpi_xsdt_t *) current;
166 current += sizeof(acpi_xsdt_t);
169 /* clear all table memory */
170 memset((void *)start, 0, current - start);
172 acpi_write_rsdp(rsdp, rsdt, xsdt);
173 acpi_write_rsdt(rsdt);
174 acpi_write_xsdt(xsdt);
177 * We explicitly add these tables later on:
179 printk(BIOS_DEBUG, "ACPI: * HPET\n");
181 hpet = (acpi_hpet_t *) current;
182 current += sizeof(acpi_hpet_t);
184 acpi_create_intel_hpet(hpet);
185 acpi_add_table(rsdp, hpet);
187 /* If we want to use HPET Timers Linux wants an MADT */
188 printk(BIOS_DEBUG, "ACPI: * MADT\n");
190 madt = (acpi_madt_t *) current;
191 acpi_create_madt(madt);
192 current += madt->header.length;
194 acpi_add_table(rsdp, madt);
196 printk(BIOS_DEBUG, "ACPI: * MCFG\n");
197 mcfg = (acpi_mcfg_t *) current;
198 acpi_create_mcfg(mcfg);
199 current += mcfg->header.length;
201 acpi_add_table(rsdp, mcfg);
203 printk(BIOS_DEBUG, "ACPI: * FACS\n");
204 facs = (acpi_facs_t *) current;
205 current += sizeof(acpi_facs_t);
207 acpi_create_facs(facs);
209 dsdt = (acpi_header_t *) current;
210 memcpy(dsdt, &AmlCode, sizeof(acpi_header_t));
211 current += dsdt->length;
212 memcpy(dsdt, &AmlCode, dsdt->length);
216 /* Pack GNVS into the ACPI table area */
217 for (i = 0; i < dsdt->length; i++) {
218 if (*(u32 *) (((u32) dsdt) + i) == 0xC0DEBABE) {
219 printk(BIOS_DEBUG, "ACPI: Patching up global NVS in "
220 "DSDT at offset 0x%04x -> 0x%08lx\n",
222 *(u32 *) (((u32) dsdt) + i) = current; // 0x92 bytes
228 acpi_create_gnvs((global_nvs_t *) current);
233 /* And tell SMI about it */
234 smm_setup_structures((void *)current, NULL, NULL);
236 /* We patched up the DSDT, so we need to recalculate the checksum */
238 dsdt->checksum = acpi_checksum((void *)dsdt, dsdt->length);
240 printk(BIOS_DEBUG, "ACPI: * DSDT @ %p Length %x\n", dsdt,
243 #if CONFIG_HAVE_ACPI_SLIC
244 printk(BIOS_DEBUG, "ACPI: * SLIC\n");
245 slic = (acpi_header_t *) current;
246 current += acpi_create_slic(current);
248 acpi_add_table(rsdp, slic);
251 printk(BIOS_DEBUG, "ACPI: * FADT\n");
252 fadt = (acpi_fadt_t *) current;
253 current += sizeof(acpi_fadt_t);
256 acpi_create_fadt(fadt, facs, dsdt);
257 acpi_add_table(rsdp, fadt);
259 printk(BIOS_DEBUG, "ACPI: * SSDT\n");
260 ssdt = (acpi_header_t *) current;
261 acpi_create_ssdt_generator(ssdt, "COREBOOT");
262 current += ssdt->length;
263 acpi_add_table(rsdp, ssdt);
266 printk(BIOS_DEBUG, "current = %lx\n", current);
268 printk(BIOS_DEBUG, "ACPI: * DMI (Linux workaround)\n");
269 memcpy((void *)0xfff80, dmi_table, DMI_TABLE_SIZE);
270 #if CONFIG_WRITE_HIGH_TABLES == 1
271 memcpy((void *)current, dmi_table, DMI_TABLE_SIZE);
272 current += DMI_TABLE_SIZE;
276 printk(BIOS_INFO, "ACPI: done.\n");