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>
32 extern const unsigned char AmlCode[];
33 #if CONFIG_HAVE_ACPI_SLIC
34 unsigned long acpi_create_slic(unsigned long current);
37 #include "southbridge/intel/i82801gx/nvs.h"
38 static void acpi_create_gnvs(global_nvs_t *gnvs)
40 memset((void *)gnvs, 0, sizeof(*gnvs));
42 gnvs->mpen = 1; /* Enable Multi Processing */
44 /* Enable both COM ports */
50 gnvs->did[0] = 0x80000100;
51 gnvs->did[1] = 0x80000240;
52 gnvs->did[2] = 0x80000410;
53 gnvs->did[3] = 0x80000410;
54 gnvs->did[4] = 0x00000005;
57 static void acpi_create_intel_hpet(acpi_hpet_t * hpet)
59 #define HPET_ADDR 0xfed00000ULL
60 acpi_header_t *header = &(hpet->header);
61 acpi_addr_t *addr = &(hpet->addr);
63 memset((void *) hpet, 0, sizeof(acpi_hpet_t));
65 /* fill out header fields */
66 memcpy(header->signature, "HPET", 4);
67 memcpy(header->oem_id, OEM_ID, 6);
68 memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8);
69 memcpy(header->asl_compiler_id, ASLC, 4);
71 header->length = sizeof(acpi_hpet_t);
74 /* fill out HPET address */
75 addr->space_id = 0; /* Memory */
78 addr->addrl = HPET_ADDR & 0xffffffff;
79 addr->addrh = HPET_ADDR >> 32;
81 hpet->id = 0x8086a201; /* Intel */
83 hpet->min_tick = 0x0080;
86 acpi_checksum((void *) hpet, sizeof(acpi_hpet_t));
89 unsigned long acpi_fill_madt(unsigned long current)
92 current = acpi_create_madt_lapics(current);
95 current += acpi_create_madt_ioapic((acpi_madt_ioapic_t *) current,
99 current += acpi_create_madt_irqoverride((acpi_madt_irqoverride_t *)
100 current, 0, 0, 2, 0);
101 current += acpi_create_madt_irqoverride((acpi_madt_irqoverride_t *)
102 current, 0, 9, 9, MP_IRQ_TRIGGER_LEVEL | MP_IRQ_POLARITY_HIGH);
107 unsigned long acpi_fill_ssdt_generator(unsigned long current, const char *oem_table_id)
109 generate_cpu_entries();
110 return (unsigned long) (acpigen_get_current());
113 unsigned long acpi_fill_slit(unsigned long current)
119 unsigned long acpi_fill_srat(unsigned long current)
121 /* No NUMA, no SRAT */
125 void smm_setup_structures(void *gnvs, void *tcg, void *smi1);
127 #define ALIGN_CURRENT current = ((current + 0x0f) & -0x10)
128 unsigned long write_acpi_tables(unsigned long start)
130 unsigned long current;
140 #if CONFIG_HAVE_ACPI_SLIC
148 /* Align ACPI tables to 16byte */
151 printk(BIOS_INFO, "ACPI: Writing ACPI tables at %lx.\n", start);
153 /* We need at least an RSDP and an RSDT Table */
154 rsdp = (acpi_rsdp_t *) current;
155 current += sizeof(acpi_rsdp_t);
157 rsdt = (acpi_rsdt_t *) current;
158 current += sizeof(acpi_rsdt_t);
160 xsdt = (acpi_xsdt_t *) current;
161 current += sizeof(acpi_xsdt_t);
164 /* clear all table memory */
165 memset((void *) start, 0, current - start);
167 acpi_write_rsdp(rsdp, rsdt, xsdt);
168 acpi_write_rsdt(rsdt);
169 acpi_write_xsdt(xsdt);
172 * We explicitly add these tables later on:
174 printk(BIOS_DEBUG, "ACPI: * HPET\n");
176 hpet = (acpi_hpet_t *) current;
177 current += sizeof(acpi_hpet_t);
179 acpi_create_intel_hpet(hpet);
180 acpi_add_table(rsdp, hpet);
182 /* If we want to use HPET Timers Linux wants an MADT */
183 printk(BIOS_DEBUG, "ACPI: * MADT\n");
185 madt = (acpi_madt_t *) current;
186 acpi_create_madt(madt);
187 current += madt->header.length;
189 acpi_add_table(rsdp, madt);
191 printk(BIOS_DEBUG, "ACPI: * MCFG\n");
192 mcfg = (acpi_mcfg_t *) current;
193 acpi_create_mcfg(mcfg);
194 current += mcfg->header.length;
196 acpi_add_table(rsdp, mcfg);
198 printk(BIOS_DEBUG, "ACPI: * FACS\n");
199 facs = (acpi_facs_t *) current;
200 current += sizeof(acpi_facs_t);
202 acpi_create_facs(facs);
204 dsdt = (acpi_header_t *) current;
205 memcpy(dsdt, &AmlCode, sizeof(acpi_header_t));
206 current += dsdt->length;
207 memcpy(dsdt, &AmlCode, dsdt->length);
211 /* Pack GNVS into the ACPI table area */
212 for (i=0; i < dsdt->length; i++) {
213 if (*(u32*)(((u32)dsdt) + i) == 0xC0DEBABE) {
214 printk(BIOS_DEBUG, "ACPI: Patching up global NVS in DSDT at offset 0x%04x -> 0x%08lx\n", i, current);
215 *(u32*)(((u32)dsdt) + i) = current; // 0x92 bytes
221 acpi_create_gnvs((global_nvs_t *)current);
226 /* And tell SMI about it */
227 smm_setup_structures((void *)current, NULL, NULL);
229 /* We patched up the DSDT, so we need to recalculate the checksum */
231 dsdt->checksum = acpi_checksum((void *)dsdt, dsdt->length);
233 printk(BIOS_DEBUG, "ACPI: * DSDT @ %p Length %x\n", dsdt,
236 #if CONFIG_HAVE_ACPI_SLIC
237 printk(BIOS_DEBUG, "ACPI: * SLIC\n");
238 slic = (acpi_header_t *)current;
239 current += acpi_create_slic(current);
241 acpi_add_table(rsdp, slic);
244 printk(BIOS_DEBUG, "ACPI: * FADT\n");
245 fadt = (acpi_fadt_t *) current;
246 current += sizeof(acpi_fadt_t);
249 acpi_create_fadt(fadt, facs, dsdt);
250 acpi_add_table(rsdp, fadt);
252 printk(BIOS_DEBUG, "ACPI: * SSDT\n");
253 ssdt = (acpi_header_t *)current;
254 acpi_create_ssdt_generator(ssdt, ACPI_TABLE_CREATOR);
255 current += ssdt->length;
256 acpi_add_table(rsdp, ssdt);
259 printk(BIOS_DEBUG, "current = %lx\n", current);
260 printk(BIOS_INFO, "ACPI: done.\n");