1
2
3
4
5
6#include <common.h>
7#include <command.h>
8#include <mapmem.h>
9#include <acpi/acpi_table.h>
10#include <asm/acpi_table.h>
11#include <asm/global_data.h>
12#include <dm/acpi.h>
13
14DECLARE_GLOBAL_DATA_PTR;
15
16
17
18
19
20
21
22
23static void dump_hdr(struct acpi_table_header *hdr)
24{
25 bool has_hdr = memcmp(hdr->signature, "FACS", ACPI_NAME_LEN);
26
27 printf("%.*s %08lx %06x", ACPI_NAME_LEN, hdr->signature,
28 (ulong)map_to_sysmem(hdr), hdr->length);
29 if (has_hdr) {
30 printf(" (v%02d %.6s %.8s %x %.4s %x)\n", hdr->revision,
31 hdr->oem_id, hdr->oem_table_id, hdr->oem_revision,
32 hdr->aslc_id, hdr->aslc_revision);
33 } else {
34 printf("\n");
35 }
36}
37
38
39
40
41
42
43
44struct acpi_table_header *find_table(const char *sig)
45{
46 struct acpi_rsdp *rsdp;
47 struct acpi_rsdt *rsdt;
48 int len, i, count;
49
50 rsdp = map_sysmem(gd->arch.acpi_start, 0);
51 if (!rsdp)
52 return NULL;
53 rsdt = map_sysmem(rsdp->rsdt_address, 0);
54 len = rsdt->header.length - sizeof(rsdt->header);
55 count = len / sizeof(u32);
56 for (i = 0; i < count; i++) {
57 struct acpi_table_header *hdr;
58
59 hdr = map_sysmem(rsdt->entry[i], 0);
60 if (!memcmp(hdr->signature, sig, ACPI_NAME_LEN))
61 return hdr;
62 if (!memcmp(hdr->signature, "FACP", ACPI_NAME_LEN)) {
63 struct acpi_fadt *fadt = (struct acpi_fadt *)hdr;
64
65 if (!memcmp(sig, "DSDT", ACPI_NAME_LEN) && fadt->dsdt)
66 return map_sysmem(fadt->dsdt, 0);
67 if (!memcmp(sig, "FACS", ACPI_NAME_LEN) &&
68 fadt->firmware_ctrl)
69 return map_sysmem(fadt->firmware_ctrl, 0);
70 }
71 }
72
73 return NULL;
74}
75
76static int dump_table_name(const char *sig)
77{
78 struct acpi_table_header *hdr;
79
80 hdr = find_table(sig);
81 if (!hdr)
82 return -ENOENT;
83 printf("%.*s @ %08lx\n", ACPI_NAME_LEN, hdr->signature,
84 (ulong)map_to_sysmem(hdr));
85 print_buffer(0, hdr, 1, hdr->length, 0);
86
87 return 0;
88}
89
90static void list_fadt(struct acpi_fadt *fadt)
91{
92 if (fadt->dsdt)
93 dump_hdr(map_sysmem(fadt->dsdt, 0));
94 if (fadt->firmware_ctrl)
95 dump_hdr(map_sysmem(fadt->firmware_ctrl, 0));
96}
97
98static int list_rsdt(struct acpi_rsdt *rsdt, struct acpi_xsdt *xsdt)
99{
100 int len, i, count;
101
102 dump_hdr(&rsdt->header);
103 if (xsdt)
104 dump_hdr(&xsdt->header);
105 len = rsdt->header.length - sizeof(rsdt->header);
106 count = len / sizeof(u32);
107 for (i = 0; i < count; i++) {
108 struct acpi_table_header *hdr;
109
110 if (!rsdt->entry[i])
111 break;
112 hdr = map_sysmem(rsdt->entry[i], 0);
113 dump_hdr(hdr);
114 if (!memcmp(hdr->signature, "FACP", ACPI_NAME_LEN))
115 list_fadt((struct acpi_fadt *)hdr);
116 if (xsdt) {
117 if (xsdt->entry[i] != rsdt->entry[i]) {
118 printf(" (xsdt mismatch %llx)\n",
119 xsdt->entry[i]);
120 }
121 }
122 }
123
124 return 0;
125}
126
127static int list_rsdp(struct acpi_rsdp *rsdp)
128{
129 struct acpi_rsdt *rsdt;
130 struct acpi_xsdt *xsdt;
131
132 printf("RSDP %08lx %06x (v%02d %.6s)\n", (ulong)map_to_sysmem(rsdp),
133 rsdp->length, rsdp->revision, rsdp->oem_id);
134 rsdt = map_sysmem(rsdp->rsdt_address, 0);
135 xsdt = map_sysmem(rsdp->xsdt_address, 0);
136 list_rsdt(rsdt, xsdt);
137
138 return 0;
139}
140
141static int do_acpi_list(struct cmd_tbl *cmdtp, int flag, int argc,
142 char *const argv[])
143{
144 struct acpi_rsdp *rsdp;
145
146 rsdp = map_sysmem(gd->arch.acpi_start, 0);
147 if (!rsdp) {
148 printf("No ACPI tables present\n");
149 return 0;
150 }
151 printf("ACPI tables start at %lx\n", gd->arch.acpi_start);
152 list_rsdp(rsdp);
153
154 return 0;
155}
156
157static int do_acpi_items(struct cmd_tbl *cmdtp, int flag, int argc,
158 char *const argv[])
159{
160 bool dump_contents;
161
162 dump_contents = argc >= 2 && !strcmp("-d", argv[1]);
163 acpi_dump_items(dump_contents ? ACPI_DUMP_CONTENTS : ACPI_DUMP_LIST);
164
165 return 0;
166}
167
168static int do_acpi_dump(struct cmd_tbl *cmdtp, int flag, int argc,
169 char *const argv[])
170{
171 const char *name;
172 char sig[ACPI_NAME_LEN];
173 int ret;
174
175 name = argv[1];
176 if (strlen(name) != ACPI_NAME_LEN) {
177 printf("Table name '%s' must be four characters\n", name);
178 return CMD_RET_FAILURE;
179 }
180 str_to_upper(name, sig, -1);
181 ret = dump_table_name(sig);
182 if (ret) {
183 printf("Table '%.*s' not found\n", ACPI_NAME_LEN, sig);
184 return CMD_RET_FAILURE;
185 }
186
187 return 0;
188}
189
190#ifdef CONFIG_SYS_LONGHELP
191static char acpi_help_text[] =
192 "list - list ACPI tables\n"
193 "acpi items [-d] - List/dump each piece of ACPI data from devices\n"
194 "acpi dump <name> - Dump ACPI table";
195#endif
196
197U_BOOT_CMD_WITH_SUBCMDS(acpi, "ACPI tables", acpi_help_text,
198 U_BOOT_SUBCMD_MKENT(list, 1, 1, do_acpi_list),
199 U_BOOT_SUBCMD_MKENT(items, 2, 1, do_acpi_items),
200 U_BOOT_SUBCMD_MKENT(dump, 2, 1, do_acpi_dump));
201
