2 * This file is part of the coreboot project.
4 * Copyright (C) 2007-2008 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
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
23 #include <console/console.h>
24 #include <arch/acpi.h>
25 #include <device/device.h>
26 #include <device/pci.h>
27 #include <device/pci_ids.h>
30 extern unsigned char AmlCode[];
32 typedef struct acpi_oemb {
57 } __attribute__((packed)) acpi_oemb_t;
59 void acpi_create_oemb(acpi_oemb_t *oemb)
61 acpi_header_t *header = &(oemb->header);
64 memset (oemb, 0, sizeof(oemb));
66 /* fill out header fields */
67 memcpy(header->signature, "OEMB", 4);
68 memcpy(header->oem_id, OEM_ID, 6);
69 memcpy(header->oem_table_id, "COREBOOT", 8);
70 memcpy(header->asl_compiler_id, ASLC, 4);
72 header->length = sizeof(acpi_oemb_t);
75 oemb->ss = 0x09; // ss1 + ss 4
76 oemb->iost = 0x0403; // ??
78 tolud = pci_read_config32(dev_find_slot(0, PCI_DEVFN(2, 0)), 0x5c);
81 oemb->roms = 0xfff00000; // 1M hardcoded
83 oemb->mg1b = 0x000d0000;
84 oemb->mg1l = 0x00010000;
90 oemb->hpta = 0x000e36c0;
93 acpi_checksum((void *) oemb, sizeof(acpi_oemb_t));
97 unsigned long acpi_fill_mcfg(unsigned long current)
104 dev = dev_find_device(0x8086, 0x27a0, 0);
108 // MMCFG not supported or not enabled.
109 pciexbar_reg=pci_read_config32(dev, 0x48);
111 if (!(pciexbar_reg & (1 << 0)))
114 switch ((pciexbar_reg >> 1) & 3) {
116 pciexbar = pciexbar_reg & ((1 << 31)|(1 << 30)|(1 << 29)|(1 << 28));
120 pciexbar = pciexbar_reg & ((1 << 31)|(1 << 30)|(1 << 29)|(1 << 28)|(1 << 27));
124 pciexbar = pciexbar_reg & ((1 << 31)|(1 << 30)|(1 << 29)|(1 << 28)|(1 << 27)|(1 << 26));
134 current += acpi_create_mcfg_mmconfig((acpi_mcfg_mmconfig_t *) current,
135 pciexbar, 0x0, 0x0, max_buses - 1);
140 void acpi_create_intel_hpet(acpi_hpet_t * hpet)
142 #define HPET_ADDR 0xfed00000ULL
143 acpi_header_t *header = &(hpet->header);
144 acpi_addr_t *addr = &(hpet->addr);
146 memset((void *) hpet, 0, sizeof(acpi_hpet_t));
148 /* fill out header fields */
149 memcpy(header->signature, HPET_NAME, 4);
150 memcpy(header->oem_id, OEM_ID, 6);
151 memcpy(header->oem_table_id, "COREBOOT", 8);
152 memcpy(header->asl_compiler_id, ASLC, 4);
154 header->length = sizeof(acpi_hpet_t);
155 header->revision = 1;
157 /* fill out HPET address */
158 addr->space_id = 0; /* Memory */
159 addr->bit_width = 64;
160 addr->bit_offset = 0;
161 addr->addrl = HPET_ADDR & 0xffffffff;
162 addr->addrh = HPET_ADDR >> 32;
164 hpet->id = 0x8086a201; /* Intel */
166 hpet->min_tick = 0x0080;
169 acpi_checksum((void *) hpet, sizeof(acpi_hpet_t));
174 #define IO_APIC_ADDR 0xfec00000UL
176 unsigned long acpi_fill_madt(unsigned long current)
179 current += acpi_create_madt_lapic((acpi_madt_lapic_t *) current, 1, 0);
180 // This one is for the second core... Will it hurt?
181 current += acpi_create_madt_lapic((acpi_madt_lapic_t *) current, 2, 1);
184 current += acpi_create_madt_ioapic((acpi_madt_ioapic_t *) current, 2, IO_APIC_ADDR, 0);
187 current += acpi_create_madt_irqoverride((acpi_madt_irqoverride_t *) current, 0, 0, 2, 0);
188 current += acpi_create_madt_irqoverride((acpi_madt_irqoverride_t *) current, 0, 9, 9, 0x000d); // high/level
193 unsigned long acpi_fill_slit(unsigned long current)
199 unsigned long acpi_fill_srat(unsigned long current)
201 /* No NUMA, no SRAT */
206 #define ALIGN_CURRENT current = ((current + 0x0f) & -0x10)
207 unsigned long write_acpi_tables(unsigned long start)
209 unsigned long current;
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);
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(rsdt, 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(rsdt, 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(rsdt, mcfg);
269 printk_debug("ACPI: * OEMB\n");
270 oemb=(acpi_oemb_t *)current;
271 current += sizeof(acpi_oemb_t);
273 acpi_create_oemb(oemb);
274 acpi_add_table(rsdt, oemb);
276 printk_debug("ACPI: * FACS\n");
277 facs = (acpi_facs_t *) current;
278 current += sizeof(acpi_facs_t);
280 acpi_create_facs(facs);
282 dsdt = (acpi_header_t *) current;
283 current += ((acpi_header_t *) AmlCode)->length;
285 memcpy((void *) dsdt, (void *) AmlCode,
286 ((acpi_header_t *) AmlCode)->length);
289 for (i=0; i < dsdt->length; i++) {
290 if (*(u32*)(((u32)dsdt) + i) == 0xC0DEBABE) {
291 printk_debug("ACPI: Patching up DSDT at offset 0x%04x -> 0x%08x\n", i, 0x24 + (u32)oemb);
292 *(u32*)(((u32)dsdt) + i) = 0x24 + (u32)oemb;
297 /* We patched up the DSDT, so we need to recalculate the checksum */
299 dsdt->checksum = acpi_checksum((void *)dsdt, dsdt->length);
302 printk_debug("ACPI: * DSDT @ %p Length %x\n", dsdt,
305 printk_debug("ACPI: * FADT\n");
306 fadt = (acpi_fadt_t *) current;
307 current += sizeof(acpi_fadt_t);
310 acpi_create_fadt(fadt, facs, dsdt);
311 acpi_add_table(rsdt, fadt);
312 printk_debug("current = %lx\n", current);
314 printk_debug("ACPI: * DMI (Linux workaround)\n");
315 memcpy((void *)0xfff80, dmi_table, DMI_TABLE_SIZE);
316 #if CONFIG_HAVE_HIGH_TABLES == 1
317 memcpy((void *)current, dmi_table, DMI_TABLE_SIZE);
318 current += DMI_TABLE_SIZE;
322 printk_info("ACPI: done.\n");