2 * This file is part of the coreboot project.
4 * Written by Stefan Reinauer <stepan@openbios.org>.
5 * ACPI FADT, FACS, and DSDT table support added by
7 * Copyright (C) 2004 Stefan Reinauer <stepan@openbios.org>
8 * Copyright (C) 2005 Nick Barker <nick.barker9@btinternet.com>
9 * Copyright (C) 2007, 2008 Rudolf Marek <r.marek@assembler.cz>
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License v2 as published by
13 * the Free Software Foundation.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
25 #include <console/console.h>
27 #include <arch/acpi.h>
28 #include <arch/smp/mpspec.h>
29 #include <device/device.h>
30 #include <device/pci_ids.h>
31 #include <../../../southbridge/via/vt8237r/vt8237r.h>
32 #include <../../../southbridge/via/k8t890/k8t890.h>
34 extern unsigned char AmlCode[];
35 extern unsigned char AmlCode_ssdt[];
37 unsigned long acpi_fill_mcfg(unsigned long current)
42 dev = dev_find_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_K8T890CE_5, 0);
46 res = find_resource(dev, K8T890_MMCONFIG_MBAR);
48 current += acpi_create_mcfg_mmconfig((acpi_mcfg_mmconfig_t *)
49 current, res->base, 0x0, 0x0, 0xff);
54 unsigned long acpi_fill_madt(unsigned long current)
56 unsigned int gsi_base = 0x18;
58 /* Create all subtables for processors. */
59 current = acpi_create_madt_lapics(current);
61 /* Write SB IOAPIC. */
62 current += acpi_create_madt_ioapic((acpi_madt_ioapic_t *) current,
63 VT8237R_APIC_ID, VT8237R_APIC_BASE, 0);
65 /* Write NB IOAPIC. */
66 current += acpi_create_madt_ioapic((acpi_madt_ioapic_t *) current,
67 K8T890_APIC_ID, K8T890_APIC_BASE, gsi_base);
69 /* IRQ9 ACPI active low. */
70 current += acpi_create_madt_irqoverride((acpi_madt_irqoverride_t *)
71 current, 0, 9, 9, MP_IRQ_TRIGGER_LEVEL | MP_IRQ_POLARITY_LOW);
73 /* IRQ0 -> APIC IRQ2. */
74 current += acpi_create_madt_irqoverride((acpi_madt_irqoverride_t *)
75 current, 0, 0, 2, 0x0);
77 /* Create all subtables for processors. */
78 current = acpi_create_madt_lapic_nmis(current,
79 MP_IRQ_TRIGGER_EDGE | MP_IRQ_POLARITY_HIGH, 1);
84 unsigned long write_acpi_tables(unsigned long start)
86 unsigned long current;
99 /* Align ACPI tables to 16 byte. */
100 start = (start + 0x0f) & -0x10;
103 printk_info("ACPI: Writing ACPI tables at %lx...\n", start);
105 /* We need at least an RSDP and an RSDT table. */
106 rsdp = (acpi_rsdp_t *) current;
107 current += sizeof(acpi_rsdp_t);
108 rsdt = (acpi_rsdt_t *) current;
109 current += sizeof(acpi_rsdt_t);
111 /* Clear all table memory. */
112 memset((void *) start, 0, current - start);
114 acpi_write_rsdp(rsdp, rsdt);
115 acpi_write_rsdt(rsdt);
117 /* We explicitly add these tables later on: */
118 printk_debug("ACPI: * FACS\n");
120 /* we should align FACS to 64B as per ACPI specs */
122 current = ALIGN(current, 64);
123 facs = (acpi_facs_t *) current;
124 current += sizeof(acpi_facs_t);
125 acpi_create_facs(facs);
127 dsdt = (acpi_header_t *) current;
128 current += ((acpi_header_t *) AmlCode)->length;
129 memcpy((void *) dsdt, (void *) AmlCode,
130 ((acpi_header_t *) AmlCode)->length);
131 dsdt->checksum = 0; /* Don't trust iasl to get this right. */
132 dsdt->checksum = acpi_checksum(dsdt, dsdt->length);
133 printk_debug("ACPI: * DSDT @ %08x Length %x\n", dsdt,
135 printk_debug("ACPI: * FADT\n");
137 fadt = (acpi_fadt_t *) current;
138 current += sizeof(acpi_fadt_t);
140 acpi_create_fadt(fadt, facs, dsdt);
141 acpi_add_table(rsdt, fadt);
143 printk_debug("ACPI: * HPET\n");
144 hpet = (acpi_hpet_t *) current;
145 current += sizeof(acpi_hpet_t);
146 acpi_create_hpet(hpet);
147 acpi_add_table(rsdt, hpet);
149 /* If we want to use HPET timers Linux wants an MADT. */
150 printk_debug("ACPI: * MADT\n");
151 madt = (acpi_madt_t *) current;
152 acpi_create_madt(madt);
153 current += madt->header.length;
154 acpi_add_table(rsdt, madt);
156 printk_debug("ACPI: * MCFG\n");
157 mcfg = (acpi_mcfg_t *) current;
158 acpi_create_mcfg(mcfg);
159 current += mcfg->header.length;
160 acpi_add_table(rsdt, mcfg);
162 printk_debug("ACPI: * SRAT\n");
163 srat = (acpi_srat_t *) current;
164 acpi_create_srat(srat);
165 current += srat->header.length;
166 acpi_add_table(rsdt, srat);
169 printk_debug("ACPI: * SLIT\n");
170 slit = (acpi_slit_t *) current;
171 acpi_create_slit(slit);
172 current+=slit->header.length;
173 acpi_add_table(rsdt,slit);
176 printk_debug("ACPI: * SSDT\n");
177 ssdt = (acpi_header_t *)current;
178 current += ((acpi_header_t *)AmlCode_ssdt)->length;
179 memcpy((void *)ssdt, (void *)AmlCode_ssdt, ((acpi_header_t *)AmlCode_ssdt)->length);
180 update_ssdt((void*)ssdt);
181 /* recalculate checksum */
183 ssdt->checksum = acpi_checksum((unsigned char *)ssdt,ssdt->length);
184 acpi_add_table(rsdt,ssdt);
186 printk_info("ACPI: done.\n");