target/i386: Use X86Seg enum for segment registers
[qemu/ar7.git] / tests / qtest / acpi-utils.c
blobd2a202efcae46ad58123c06b429748c940be63f1
1 /*
2 * ACPI Utility Functions
4 * Copyright (c) 2013 Red Hat Inc.
5 * Copyright (c) 2017 Skyport Systems
7 * Authors:
8 * Michael S. Tsirkin <mst@redhat.com>,
9 * Ben Warren <ben@skyportsystems.com>
11 * This work is licensed under the terms of the GNU GPL, version 2 or later.
12 * See the COPYING file in the top-level directory.
15 #include "qemu/osdep.h"
16 #include <glib/gstdio.h>
17 #include "qemu-common.h"
18 #include "qemu/bitmap.h"
19 #include "acpi-utils.h"
20 #include "boot-sector.h"
22 uint8_t acpi_calc_checksum(const uint8_t *data, int len)
24 int i;
25 uint8_t sum = 0;
27 for (i = 0; i < len; i++) {
28 sum += data[i];
31 return sum;
34 uint32_t acpi_find_rsdp_address(QTestState *qts)
36 uint32_t off;
38 /* RSDP location can vary across a narrow range */
39 for (off = 0xf0000; off < 0x100000; off += 0x10) {
40 uint8_t sig[] = "RSD PTR ";
41 int i;
43 for (i = 0; i < sizeof sig - 1; ++i) {
44 sig[i] = qtest_readb(qts, off + i);
47 if (!memcmp(sig, "RSD PTR ", sizeof sig)) {
48 break;
51 return off;
54 void acpi_fetch_rsdp_table(QTestState *qts, uint64_t addr, uint8_t *rsdp_table)
56 uint8_t revision;
58 /* Read mandatory revision 0 table data (20 bytes) first */
59 qtest_memread(qts, addr, rsdp_table, 20);
60 revision = rsdp_table[15 /* Revision offset */];
62 switch (revision) {
63 case 0: /* ACPI 1.0 RSDP */
64 break;
65 case 2: /* ACPI 2.0+ RSDP */
66 /* Read the rest of the RSDP table */
67 qtest_memread(qts, addr + 20, rsdp_table + 20, 16);
68 break;
69 default:
70 g_assert_not_reached();
73 ACPI_ASSERT_CMP64(*((uint64_t *)(rsdp_table)), "RSD PTR ");
76 /** acpi_fetch_table
77 * load ACPI table at @addr_ptr offset pointer into buffer and return it in
78 * @aml, its length in @aml_len and check that signature/checksum matches
79 * actual one.
81 void acpi_fetch_table(QTestState *qts, uint8_t **aml, uint32_t *aml_len,
82 const uint8_t *addr_ptr, int addr_size, const char *sig,
83 bool verify_checksum)
85 uint32_t len;
86 uint64_t addr = 0;
88 g_assert(addr_size == 4 || addr_size == 8);
89 memcpy(&addr, addr_ptr , addr_size);
90 addr = le64_to_cpu(addr);
91 qtest_memread(qts, addr + 4, &len, 4); /* Length of ACPI table */
92 *aml_len = le32_to_cpu(len);
93 *aml = g_malloc0(*aml_len);
94 /* get whole table */
95 qtest_memread(qts, addr, *aml, *aml_len);
97 if (sig) {
98 ACPI_ASSERT_CMP(**aml, sig);
100 if (verify_checksum) {
101 g_assert(!acpi_calc_checksum(*aml, *aml_len));
105 #define GUID_SIZE 16
106 static const uint8_t AcpiTestSupportGuid[GUID_SIZE] = {
107 0xb1, 0xa6, 0x87, 0xab,
108 0x34, 0x20,
109 0xa0, 0xbd,
110 0x71, 0xbd, 0x37, 0x50, 0x07, 0x75, 0x77, 0x85 };
112 typedef struct {
113 uint8_t signature_guid[GUID_SIZE];
114 uint64_t rsdp10;
115 uint64_t rsdp20;
116 } __attribute__((packed)) UefiTestSupport;
118 /* Wait at most 600 seconds (test is slow with TCG and --enable-debug) */
119 #define TEST_DELAY (1 * G_USEC_PER_SEC / 10)
120 #define TEST_CYCLES MAX((600 * G_USEC_PER_SEC / TEST_DELAY), 1)
121 #define MB 0x100000ULL
122 uint64_t acpi_find_rsdp_address_uefi(QTestState *qts, uint64_t start,
123 uint64_t size)
125 int i, j;
126 uint8_t data[GUID_SIZE];
128 for (i = 0; i < TEST_CYCLES; ++i) {
129 for (j = 0; j < size / MB; j++) {
130 /* look for GUID at every 1Mb block */
131 uint64_t addr = start + j * MB;
133 qtest_memread(qts, addr, data, sizeof(data));
134 if (!memcmp(AcpiTestSupportGuid, data, sizeof(data))) {
135 UefiTestSupport ret;
137 qtest_memread(qts, addr, &ret, sizeof(ret));
138 ret.rsdp10 = le64_to_cpu(ret.rsdp10);
139 ret.rsdp20 = le64_to_cpu(ret.rsdp20);
140 return ret.rsdp20 ? ret.rsdp20 : ret.rsdp10;
143 g_usleep(TEST_DELAY);
145 g_assert_not_reached();
146 return 0;