summaryrefslogtreecommitdiff
path: root/src/mainboard/via/epia-m700/acpi_tables.c
blob: fefe7b6520d7a471a03024d7b54cd9c0d0672170 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
/*
 * This file is part of the coreboot project.
 *
 * LinuxBIOS ACPI Table support
 * written by Stefan Reinauer <stepan@openbios.org>
 * ACPI FADT, FACS, and DSDT table support added by
 * Nick Barker <nick.barker9@btinternet.com>, and those portions
 * (C) Copyright 2004 Nick Barker
 * (C) Copyright 2005 Stefan Reinauer
 * (C) Copyright 2009 One Laptop per Child, Association, Inc.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; version 2 of the License.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
 */

/*
 * Most parts of this file copied from asus\a8v-e_se\acpi_tables.c,
 * acpi_is_wakeup() is from Rudolf's S3 patch and SSDT was added.
 */

#include <console/console.h>
#include <string.h>
#include <arch/acpi.h>
#include <device/device.h>
#include <device/pci_ids.h>
#include <../../../northbridge/via/vx800/vx800.h>

extern unsigned char AmlCode_dsdt[];
extern unsigned char AmlCode_ssdt[];

extern u32 wake_vec;
extern u8 acpi_sleep_type;

/*
 * These four macros are copied from <arch/smp/mpspec.h>, I have to do this
 * since the "default CONFIG_HAVE_MP_TABLE = 0" in Options.lb, and also since
 * mainboard/via/... have no mptable.c (so that I can not set
 * CONFIG_HAVE_MP_TABLE = 1) as many other mainboards.
 * So I have to copy these four to here. acpi_fill_madt() needs this.
 */
#define MP_IRQ_POLARITY_HIGH	0x1
#define MP_IRQ_POLARITY_LOW	0x3
#define MP_IRQ_TRIGGER_EDGE	0x4
#define MP_IRQ_TRIGGER_LEVEL	0xc

unsigned long acpi_fill_mcfg(unsigned long current)
{
	/* NO MCFG in VX855, no PCI-E. */
	return current;
}

unsigned long acpi_create_madt_lapic_nmis(unsigned long current, u16 flags,
					  u8 lint)
{
	device_t cpu;
	int cpu_index = 0;

	for (cpu = all_devices; cpu; cpu = cpu->next) {
		if ((cpu->path.type != DEVICE_PATH_APIC) ||
		    (cpu->bus->dev->path.type != DEVICE_PATH_APIC_CLUSTER)) {
			continue;
		}
		if (!cpu->enabled)
			continue;
		current += acpi_create_madt_lapic_nmi((acpi_madt_lapic_nmi_t *)
					      current, cpu_index, flags, lint);
		cpu_index++;
	}
	return current;
}

unsigned long acpi_fill_madt(unsigned long current)
{
	unsigned int gsi_base = 0x18;

	/* Create all subtables for processors. */
	current = acpi_create_madt_lapics(current);

	/* Write SB IOAPIC. */
	current += acpi_create_madt_ioapic((acpi_madt_ioapic_t *) current,
				   VX800SB_APIC_ID, VX800SB_APIC_BASE, 0);

	/* IRQ0 -> APIC IRQ2. */
	current += acpi_create_madt_irqoverride((acpi_madt_irqoverride_t *)
						current, 0, 0, 2, 0x0);

	/* IRQ9 ACPI active low. */
	current += acpi_create_madt_irqoverride((acpi_madt_irqoverride_t *)
		current, 0, 9, 9, MP_IRQ_TRIGGER_LEVEL | MP_IRQ_POLARITY_LOW);

	/* Create all subtables for processors. */
	current = acpi_create_madt_lapic_nmis(current,
			      MP_IRQ_TRIGGER_EDGE | MP_IRQ_POLARITY_HIGH, 1);

	return current;
}

unsigned long acpi_fill_slit(unsigned long current)
{
	/* Not implemented. */
	return current;
}

unsigned long acpi_fill_srat(unsigned long current)
{
	/* No NUMA, no SRAT. */
}

#define ALIGN(x,a)              __ALIGN_MASK(x,(typeof(x))(a)-1)
#define __ALIGN_MASK(x,mask)    (((x)+(mask))&~(mask))

unsigned long write_acpi_tables(unsigned long start)
{
	unsigned long current;
	acpi_rsdp_t *rsdp;
	acpi_srat_t *srat;
	acpi_rsdt_t *rsdt;
	acpi_mcfg_t *mcfg;
	acpi_hpet_t *hpet;
	acpi_madt_t *madt;
	acpi_fadt_t *fadt;
	acpi_facs_t *facs;
	acpi_header_t *dsdt, *ssdt;

	/* Align ACPI tables to 16 byte. */
	start = (start + 0x0f) & -0x10;
	current = start;

	printk_info("ACPI: Writing ACPI tables at %lx...\n", start);

	/* We need at least an RSDP and an RSDT table. */
	rsdp = (acpi_rsdp_t *) current;
	current += sizeof(acpi_rsdp_t);
	rsdt = (acpi_rsdt_t *) current;
	current += sizeof(acpi_rsdt_t);

	/* Clear all table memory. */
	memset((void *)start, 0, current - start);

	acpi_write_rsdp(rsdp, rsdt, NULL);
	acpi_write_rsdt(rsdt);

	/* We explicitly add these tables later on: */
	printk_debug("ACPI:     * FACS\n");
	current = ALIGN(current, 64);
	facs = (acpi_facs_t *) current;
	current += sizeof(acpi_facs_t);
	acpi_create_facs(facs);

	printk_debug("ACPI:     * DSDT\n");
	dsdt = (acpi_header_t *) current;
	current += ((acpi_header_t *) AmlCode_dsdt)->length;
	memcpy((void *)dsdt, (void *)AmlCode_dsdt,
	       ((acpi_header_t *) AmlCode_dsdt)->length);
	dsdt->checksum = 0; /* Don't trust iasl to get this right. */
	dsdt->checksum = acpi_checksum(dsdt, dsdt->length);
	printk_debug("ACPI:     * DSDT @ %08x Length %x\n", dsdt, dsdt->length);

	printk_debug("ACPI:     * FADT\n");
	fadt = (acpi_fadt_t *) current;
	current += sizeof(acpi_fadt_t);

	acpi_create_fadt(fadt, facs, dsdt);
	acpi_add_table(rsdp, fadt);

	/* If we want to use HPET timers Linux wants it in MADT. */
	printk_debug("ACPI:    * MADT\n");
	madt = (acpi_madt_t *) current;
	acpi_create_madt(madt);
	current += madt->header.length;
	acpi_add_table(rsdp, madt);

	/* NO MCFG in VX855, no PCI-E. */

	printk_debug("ACPI:    * HPET\n");
	hpet = (acpi_mcfg_t *) current;
	acpi_create_hpet(hpet);
	current += hpet->header.length;
	acpi_add_table(rsdp, hpet);

#if 0
	printk_debug("ACPI:     * SSDT\n");
	ssdt = (acpi_header_t *) current;
	current += ((acpi_header_t *)AmlCode_ssdt)->length;
	memcpy((void *)ssdt,(void *)AmlCode_ssdt, ((acpi_header_t *)AmlCode_ssdt)->length);
	ssdt->checksum = 0; /* Don't trust iasl to get this right. */
	ssdt->checksum = acpi_checksum(ssdt, ssdt->length);
	acpi_add_table(rsdp, ssdt);
	printk_debug("ACPI:     * SSDT @ %08x Length %x\n", ssdt, ssdt->length);
#endif

	printk_info("ACPI: done.\n");
	return current;
}

int acpi_is_wakeup(void)
{
	return (acpi_sleep_type == 3);
}