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
7 * modify it under the terms of the GNU General Public License as
8 * published by 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/acpigen.h>
25 #include <arch/smp/mpspec.h>
26 #include <device/device.h>
27 #include <device/pci.h>
28 #include <device/pci_ids.h>
29 #include <cpu/x86/msr.h>
34 extern unsigned char AmlCode[];
35 #if CONFIG_HAVE_ACPI_SLIC
36 unsigned long acpi_create_slic(unsigned long current);
38 void generate_cpu_entries(void); // from cpu/intel/speedstep
39 unsigned long acpi_fill_mcfg(unsigned long current); // from northbridge/intel/i945
42 typedef struct acpi_oemb {
67 } __attribute__((packed)) acpi_oemb_t;
70 typedef struct acpi_gnvs {
77 } __attribute__((packed)) acpi_gnvs_t;
80 void acpi_create_oemb(acpi_oemb_t *oemb)
82 acpi_header_t *header = &(oemb->header);
85 memset (oemb, 0, sizeof(*oemb));
87 /* fill out header fields */
88 memcpy(header->signature, "OEMB", 4);
89 memcpy(header->oem_id, OEM_ID, 6);
90 memcpy(header->oem_table_id, "COREBOOT", 8);
91 memcpy(header->asl_compiler_id, ASLC, 4);
93 header->length = sizeof(acpi_oemb_t);
96 oemb->ss = 0x09; // ss1 + ss 4
97 oemb->iost = 0x0403; // ??
99 tolud = pci_read_config32(dev_find_slot(0, PCI_DEVFN(2, 0)), 0x5c);
102 oemb->roms = 0xfff00000; // 1M hardcoded
104 oemb->mg1b = 0x000d0000;
105 oemb->mg1l = 0x00010000;
108 oemb->mg2l = 0-tolud;
111 oemb->hpta = 0x000e36c0;
114 acpi_checksum((void *) oemb, sizeof(acpi_oemb_t));
119 void acpi_create_gnvs(acpi_gnvs_t *gnvs)
121 memset((void *)gnvs, 0, sizeof(*gnvs));
125 void acpi_create_intel_hpet(acpi_hpet_t * hpet)
127 #define HPET_ADDR 0xfed00000ULL
128 acpi_header_t *header = &(hpet->header);
129 acpi_addr_t *addr = &(hpet->addr);
131 memset((void *) hpet, 0, sizeof(acpi_hpet_t));
133 /* fill out header fields */
134 memcpy(header->signature, "HPET", 4);
135 memcpy(header->oem_id, OEM_ID, 6);
136 memcpy(header->oem_table_id, "COREBOOT", 8);
137 memcpy(header->asl_compiler_id, ASLC, 4);
139 header->length = sizeof(acpi_hpet_t);
140 header->revision = 1;
142 /* fill out HPET address */
143 addr->space_id = 0; /* Memory */
144 addr->bit_width = 64;
145 addr->bit_offset = 0;
146 addr->addrl = HPET_ADDR & 0xffffffff;
147 addr->addrh = HPET_ADDR >> 32;
149 hpet->id = 0x8086a201; /* Intel */
151 hpet->min_tick = 0x0080;
154 acpi_checksum((void *) hpet, sizeof(acpi_hpet_t));
157 #define IO_APIC_ADDR 0xfec00000UL
159 unsigned long acpi_fill_madt(unsigned long current)
162 current = acpi_create_madt_lapics(current);
165 current += acpi_create_madt_ioapic((acpi_madt_ioapic_t *) current,
169 current += acpi_create_madt_irqoverride((acpi_madt_irqoverride_t *)
170 current, 0, 0, 2, 0);
171 current += acpi_create_madt_irqoverride((acpi_madt_irqoverride_t *)
172 current, 0, 9, 9, MP_IRQ_TRIGGER_LEVEL | MP_IRQ_POLARITY_HIGH);
177 unsigned long acpi_fill_ssdt_generator(unsigned long current, const char *oem_table_id)
179 generate_cpu_entries();
180 return (unsigned long) (acpigen_get_current());
183 unsigned long acpi_fill_slit(unsigned long current)
189 unsigned long acpi_fill_srat(unsigned long current)
191 /* No NUMA, no SRAT */
195 #if CONFIG_HAVE_SMI_HANDLER
196 void smm_setup_structures(void *gnvs, void *tcg, void *smi1);
199 #define ALIGN_CURRENT current = ((current + 0x0f) & -0x10)
200 unsigned long write_acpi_tables(unsigned long start)
202 unsigned long current;
211 #if CONFIG_HAVE_ACPI_SLIC
223 /* Align ACPI tables to 16byte */
226 printk_info("ACPI: Writing ACPI tables at %lx.\n", start);
228 /* We need at least an RSDP and an RSDT Table */
229 rsdp = (acpi_rsdp_t *) current;
230 current += sizeof(acpi_rsdp_t);
232 rsdt = (acpi_rsdt_t *) current;
233 current += sizeof(acpi_rsdt_t);
236 /* clear all table memory */
237 memset((void *) start, 0, current - start);
239 acpi_write_rsdp(rsdp, rsdt, NULL);
240 acpi_write_rsdt(rsdt);
243 * We explicitly add these tables later on:
245 printk_debug("ACPI: * HPET\n");
247 hpet = (acpi_hpet_t *) current;
248 current += sizeof(acpi_hpet_t);
250 acpi_create_intel_hpet(hpet);
251 acpi_add_table(rsdp, hpet);
253 /* If we want to use HPET Timers Linux wants an MADT */
254 printk_debug("ACPI: * MADT\n");
256 madt = (acpi_madt_t *) current;
257 acpi_create_madt(madt);
258 current += madt->header.length;
260 acpi_add_table(rsdp, madt);
262 printk_debug("ACPI: * MCFG\n");
263 mcfg = (acpi_mcfg_t *) current;
264 acpi_create_mcfg(mcfg);
265 current += mcfg->header.length;
267 acpi_add_table(rsdp, mcfg);
270 printk_debug("ACPI: * OEMB\n");
271 oemb=(acpi_oemb_t *)current;
272 current += sizeof(acpi_oemb_t);
274 acpi_create_oemb(oemb);
275 acpi_add_table(rsdp, oemb);
278 printk_debug("ACPI: * FACS\n");
279 facs = (acpi_facs_t *) current;
280 current += sizeof(acpi_facs_t);
282 acpi_create_facs(facs);
284 dsdt = (acpi_header_t *) current;
285 current += ((acpi_header_t *) AmlCode)->length;
286 memcpy((void *) dsdt, (void *) AmlCode,
287 ((acpi_header_t *) AmlCode)->length);
290 for (i=0; i < dsdt->length; i++) {
291 if (*(u32*)(((u32)dsdt) + i) == 0xC0DEBEEF) {
292 printk_debug("ACPI: Patching up DSDT at offset 0x%04x -> 0x%08x\n", i, 0x24 + (u32)oemb);
293 *(u32*)(((u32)dsdt) + i) = 0x24 + (u32)oemb;
301 /* Pack GNVS into the ACPI table area */
302 for (i=0; i < dsdt->length; i++) {
303 if (*(u32*)(((u32)dsdt) + i) == 0xC0DEBABE) {
304 printk_debug("ACPI: Patching up global NVS in DSDT at offset 0x%04x -> 0x%08x\n", i, current);
305 *(u32*)(((u32)dsdt) + i) = current; // 0x92 bytes
311 acpi_create_gnvs(current);
316 #if CONFIG_HAVE_SMI_HANDLER
317 /* And tell SMI about it */
318 smm_setup_structures((void *)current, NULL, NULL);
321 /* We patched up the DSDT, so we need to recalculate the checksum */
323 dsdt->checksum = acpi_checksum((void *)dsdt, dsdt->length);
325 printk_debug("ACPI: * DSDT @ %p Length %x\n", dsdt,
328 #if CONFIG_HAVE_ACPI_SLIC
329 printk_debug("ACPI: * SLIC\n");
330 slic = (acpi_header_t *)current;
331 current += acpi_create_slic(current);
333 acpi_add_table(rsdp, slic);
336 printk_debug("ACPI: * FADT\n");
337 fadt = (acpi_fadt_t *) current;
338 current += sizeof(acpi_fadt_t);
341 acpi_create_fadt(fadt, facs, dsdt);
342 acpi_add_table(rsdp, fadt);
344 printk_debug("ACPI: * SSDT\n");
345 ssdt = (acpi_header_t *)current;
346 acpi_create_ssdt_generator(ssdt, "DYNADATA");
347 current += ssdt->length;
348 acpi_add_table(rsdp, ssdt);
350 printk_debug("current = %lx\n", current);
352 printk_debug("ACPI: * DMI (Linux workaround)\n");
353 memcpy((void *)0xfff80, dmi_table, DMI_TABLE_SIZE);
354 #if CONFIG_WRITE_HIGH_TABLES == 1
355 memcpy((void *)current, dmi_table, DMI_TABLE_SIZE);
356 current += DMI_TABLE_SIZE;
360 printk_info("ACPI: done.\n");