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
|
/*
* Agami Aruma ACPI support
* written by Stefan Reinauer <stepan@openbios.org>
* (C) 2005 Stefan Reinauer
*/
#include <console/console.h>
#include <string.h>
#include <arch/acpi.h>
#include <device/pci.h>
#include <device/pci_ids.h>
extern unsigned char AmlCode[];
#define IO_APIC_ADDR 0xfec00000UL
unsigned long acpi_dump_apics(unsigned long current)
{
unsigned int gsi_base=0x18, ioapic_nr=2;
device_t dev=0;
/* create all subtables for 4p */
current += acpi_create_madt_lapic((acpi_madt_lapic_t *)current, 0, 16);
current += acpi_create_madt_lapic((acpi_madt_lapic_t *)current, 1, 17);
current += acpi_create_madt_lapic((acpi_madt_lapic_t *)current, 2, 18);
current += acpi_create_madt_lapic((acpi_madt_lapic_t *)current, 3, 19);
/* Write 8111 IOAPIC */
current += acpi_create_madt_ioapic((acpi_madt_ioapic_t *)current, 1,
IO_APIC_ADDR, 0);
/* Write all 8131 IOAPICs */
while((dev = dev_find_device(PCI_VENDOR_ID_AMD, 0x7451, dev))) {
ACPI_WRITE_MADT_IOAPIC(dev, ioapic_nr);
ioapic_nr++;
}
current += acpi_create_madt_irqoverride( (acpi_madt_irqoverride_t *)
current, 1, 0, 2, 0 );
current += acpi_create_madt_irqoverride( (acpi_madt_irqoverride_t *)
current, 1, 0, 2, 0 );
return current;
}
/* The next two tables are used by our DSDT and are freely defined
* here. This construct is used because the bus numbers containing
* the 8131 bridges may vary so that we need to pass LinuxBIOS
* knowledge into the DSDT
*/
typedef struct lnxc_busses {
u8 secondary;
u8 subordinate;
} acpi_lnxb_busses_t;
typedef struct acpi_lnxb {
struct acpi_table_header header;
acpi_lnxb_busses_t busses[5];
} acpi_lnxb_t;
/* special linuxbios acpi table */
void acpi_create_lnxb(acpi_lnxb_t *lnxb)
{
device_t dev;
int busidx=0;
acpi_header_t *header=&(lnxb->header);
/* fill out header fields */
memcpy(header->signature, "LNXB", 4);
memcpy(header->oem_id, OEM_ID, 6);
memcpy(header->oem_table_id, "LNXBIOS ", 8);
memcpy(header->asl_compiler_id, ASLC, 4);
header->length = sizeof(acpi_lnxb_t);
header->revision = 1;
/*
* Write external 8131 bus ranges
*/
/* first skip the onboard 8131 */
dev=dev_find_device(PCI_VENDOR_ID_AMD, 0x7450, 0);
dev=dev_find_device(PCI_VENDOR_ID_AMD, 0x7450, dev);
/* now look at the last 8131 in each chain,
* as it contains the valid bus ranges
*/
while((dev = dev_find_device(PCI_VENDOR_ID_AMD, 0x7450, dev))
&& busidx<5 ) {
int subu, fn, slot;
acpi_lnxb_busses_t *busses;
if(PCI_SLOT(dev->path.u.pci.devfn)!=4)
continue;
busses=&(lnxb->busses[busidx]);
lnxb->busses[busidx].secondary = dev->bus->secondary;
lnxb->busses[busidx].subordinate =
pci_read_config8(dev, PCI_SUBORDINATE_BUS);
busidx++;
}
header->checksum = acpi_checksum((void *)lnxb, sizeof(acpi_lnxb_t));
}
unsigned long write_acpi_tables(unsigned long start)
{
unsigned long current;
acpi_rsdp_t *rsdp;
acpi_rsdt_t *rsdt;
acpi_hpet_t *hpet;
acpi_madt_t *madt;
acpi_fadt_t *fadt;
acpi_facs_t *facs;
acpi_lnxb_t *lnxb;
acpi_header_t *dsdt;
/* Align ACPI tables to 16byte */
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);
acpi_write_rsdt(rsdt);
/*
* We explicitly add these tables later on:
*/
printk_debug("ACPI: * HPET\n");
hpet = (acpi_hpet_t *) current;
current += sizeof(acpi_hpet_t);
acpi_create_hpet(hpet);
acpi_add_table(rsdt,hpet);
/* If we want to use HPET Timers Linux wants an MADT */
printk_debug("ACPI: * MADT\n");
madt = (acpi_madt_t *) current;
acpi_create_madt(madt);
current+=madt->header.length;
acpi_add_table(rsdt,madt);
printk_debug("ACPI: * LNXB\n");
lnxb=(acpi_lnxb_t *)current;
current += sizeof(acpi_facs_t);
acpi_create_lnxb(lnxb);
printk_debug("ACPI: * FACS\n");
facs = (acpi_facs_t *) current;
current += sizeof(acpi_facs_t);
acpi_create_facs(facs);
dsdt = (acpi_header_t *)current;
current += ((acpi_header_t *)AmlCode)->length;
memcpy((void *)dsdt,(void *)AmlCode, \
((acpi_header_t *)AmlCode)->length);
/* fix up dsdt */
((u32 *)dsdt)[11]=((u32)lnxb)+sizeof(acpi_header_t);
/* recalculate checksum */
dsdt->checksum = 0;
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(rsdt,fadt);
printk_info("ACPI: done.\n");
return current;
}
|
