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
|
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2019 Google LLC
* Written by Simon Glass <sjg@chromium.org>
*/
#include <common.h>
#include <command.h>
#include <mapmem.h>
#include <acpi/acpi_table.h>
#include <asm/acpi_table.h>
#include <dm/acpi.h>
DECLARE_GLOBAL_DATA_PTR;
/**
* dump_hdr() - Dump an ACPI header
*
* If the header is for FACS then it shows the revision information as well
*
* @hdr: ACPI header to dump
*/
static void dump_hdr(struct acpi_table_header *hdr)
{
bool has_hdr = memcmp(hdr->signature, "FACS", ACPI_NAME_LEN);
printf("%.*s %08lx %06x", ACPI_NAME_LEN, hdr->signature,
(ulong)map_to_sysmem(hdr), hdr->length);
if (has_hdr) {
printf(" (v%02d %.6s %.8s %u %.4s %d)\n", hdr->revision,
hdr->oem_id, hdr->oem_table_id, hdr->oem_revision,
hdr->aslc_id, hdr->aslc_revision);
} else {
printf("\n");
}
}
/**
* find_table() - Look up an ACPI table
*
* @sig: Signature of table (4 characters, upper case)
* @return pointer to table header, or NULL if not found
*/
struct acpi_table_header *find_table(const char *sig)
{
struct acpi_rsdp *rsdp;
struct acpi_rsdt *rsdt;
int len, i, count;
rsdp = map_sysmem(gd->arch.acpi_start, 0);
if (!rsdp)
return NULL;
rsdt = map_sysmem(rsdp->rsdt_address, 0);
len = rsdt->header.length - sizeof(rsdt->header);
count = len / sizeof(u32);
for (i = 0; i < count; i++) {
struct acpi_table_header *hdr;
hdr = map_sysmem(rsdt->entry[i], 0);
if (!memcmp(hdr->signature, sig, ACPI_NAME_LEN))
return hdr;
if (!memcmp(hdr->signature, "FACP", ACPI_NAME_LEN)) {
struct acpi_fadt *fadt = (struct acpi_fadt *)hdr;
if (!memcmp(sig, "DSDT", ACPI_NAME_LEN) && fadt->dsdt)
return map_sysmem(fadt->dsdt, 0);
if (!memcmp(sig, "FACS", ACPI_NAME_LEN) &&
fadt->firmware_ctrl)
return map_sysmem(fadt->firmware_ctrl, 0);
}
}
return NULL;
}
static int dump_table_name(const char *sig)
{
struct acpi_table_header *hdr;
hdr = find_table(sig);
if (!hdr)
return -ENOENT;
printf("%.*s @ %08lx\n", ACPI_NAME_LEN, hdr->signature,
(ulong)map_to_sysmem(hdr));
print_buffer(0, hdr, 1, hdr->length, 0);
return 0;
}
static void list_fadt(struct acpi_fadt *fadt)
{
if (fadt->dsdt)
dump_hdr(map_sysmem(fadt->dsdt, 0));
if (fadt->firmware_ctrl)
dump_hdr(map_sysmem(fadt->firmware_ctrl, 0));
}
static int list_rsdt(struct acpi_rsdt *rsdt, struct acpi_xsdt *xsdt)
{
int len, i, count;
dump_hdr(&rsdt->header);
if (xsdt)
dump_hdr(&xsdt->header);
len = rsdt->header.length - sizeof(rsdt->header);
count = len / sizeof(u32);
for (i = 0; i < count; i++) {
struct acpi_table_header *hdr;
if (!rsdt->entry[i])
break;
hdr = map_sysmem(rsdt->entry[i], 0);
dump_hdr(hdr);
if (!memcmp(hdr->signature, "FACP", ACPI_NAME_LEN))
list_fadt((struct acpi_fadt *)hdr);
if (xsdt) {
if (xsdt->entry[i] != rsdt->entry[i]) {
printf(" (xsdt mismatch %llx)\n",
xsdt->entry[i]);
}
}
}
return 0;
}
static int list_rsdp(struct acpi_rsdp *rsdp)
{
struct acpi_rsdt *rsdt;
struct acpi_xsdt *xsdt;
printf("RSDP %08lx %06x (v%02d %.6s)\n", (ulong)map_to_sysmem(rsdp),
rsdp->length, rsdp->revision, rsdp->oem_id);
rsdt = map_sysmem(rsdp->rsdt_address, 0);
xsdt = map_sysmem(rsdp->xsdt_address, 0);
list_rsdt(rsdt, xsdt);
return 0;
}
static int do_acpi_list(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
struct acpi_rsdp *rsdp;
rsdp = map_sysmem(gd->arch.acpi_start, 0);
if (!rsdp) {
printf("No ACPI tables present\n");
return 0;
}
printf("ACPI tables start at %lx\n", gd->arch.acpi_start);
list_rsdp(rsdp);
return 0;
}
static int do_acpi_dump(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
const char *name;
char sig[ACPI_NAME_LEN];
int ret;
if (argc < 2)
return CMD_RET_USAGE;
name = argv[1];
if (strlen(name) != ACPI_NAME_LEN) {
printf("Table name '%s' must be four characters\n", name);
return CMD_RET_FAILURE;
}
str_to_upper(name, sig, -1);
ret = dump_table_name(sig);
if (ret) {
printf("Table '%.*s' not found\n", ACPI_NAME_LEN, sig);
return CMD_RET_FAILURE;
}
return 0;
}
static char acpi_help_text[] =
"list - list ACPI tables\n"
"acpi dump <name> - Dump ACPI table";
U_BOOT_CMD_WITH_SUBCMDS(acpi, "ACPI tables", acpi_help_text,
U_BOOT_SUBCMD_MKENT(list, 1, 1, do_acpi_list),
U_BOOT_SUBCMD_MKENT(dump, 2, 1, do_acpi_dump));
|
