diff options
Diffstat (limited to 'tests/vmgenid-test.c')
| -rw-r--r-- | tests/vmgenid-test.c | 64 |
1 files changed, 20 insertions, 44 deletions
diff --git a/tests/vmgenid-test.c b/tests/vmgenid-test.c index 1c1d435bbd..52cdd83ec0 100644 --- a/tests/vmgenid-test.c +++ b/tests/vmgenid-test.c @@ -23,26 +23,13 @@ */ #define RSDP_ADDR_INVALID 0x100000 /* RSDP must be below this address */ -typedef struct { - AcpiTableHeader header; - gchar name_op; - gchar vgia[4]; - gchar val_op; - uint32_t vgia_val; -} QEMU_PACKED VgidTable; - static uint32_t acpi_find_vgia(QTestState *qts) { uint32_t rsdp_offset; uint32_t guid_offset = 0; uint8_t rsdp_table[36 /* ACPI 2.0+ RSDP size */]; - uint32_t rsdt, rsdt_table_length; - AcpiRsdtDescriptorRev1 rsdt_table; - size_t tables_nr; - uint32_t *tables; - AcpiTableHeader ssdt_table; - VgidTable vgid_table; - int i; + uint32_t rsdt_len, table_length; + uint8_t *rsdt, *ent; /* Wait for guest firmware to finish and start the payload. */ boot_sector_test(qts); @@ -52,48 +39,37 @@ static uint32_t acpi_find_vgia(QTestState *qts) g_assert_cmphex(rsdp_offset, <, RSDP_ADDR_INVALID); - acpi_parse_rsdp_table(qts, rsdp_offset, rsdp_table); - - rsdt = acpi_get_rsdt_address(rsdp_table); - g_assert(rsdt); - /* read the header */ - ACPI_READ_TABLE_HEADER(qts, &rsdt_table, rsdt); - ACPI_ASSERT_CMP(rsdt_table.signature, "RSDT"); - rsdt_table_length = le32_to_cpu(rsdt_table.length); - - /* compute the table entries in rsdt */ - g_assert_cmpint(rsdt_table_length, >, sizeof(AcpiRsdtDescriptorRev1)); - tables_nr = (rsdt_table_length - sizeof(AcpiRsdtDescriptorRev1)) / - sizeof(uint32_t); + acpi_parse_rsdp_table(qts, rsdp_offset, rsdp_table); + acpi_fetch_table(qts, &rsdt, &rsdt_len, &rsdp_table[16 /* RsdtAddress */], + "RSDT", true); - /* get the addresses of the tables pointed by rsdt */ - tables = g_new0(uint32_t, tables_nr); - ACPI_READ_ARRAY_PTR(qts, tables, tables_nr, rsdt); + ACPI_FOREACH_RSDT_ENTRY(rsdt, rsdt_len, ent, 4 /* Entry size */) { + uint8_t *table_aml; - for (i = 0; i < tables_nr; i++) { - uint32_t addr = le32_to_cpu(tables[i]); - ACPI_READ_TABLE_HEADER(qts, &ssdt_table, addr); - if (!strncmp((char *)ssdt_table.oem_table_id, "VMGENID", 7)) { + acpi_fetch_table(qts, &table_aml, &table_length, ent, NULL, true); + if (!memcmp(table_aml + 16 /* OEM Table ID */, "VMGENID", 7)) { + uint32_t vgia_val; + uint8_t *aml = &table_aml[36 /* AML byte-code start */]; /* the first entry in the table should be VGIA * That's all we need */ - ACPI_READ_FIELD(qts, vgid_table.name_op, addr); - g_assert(vgid_table.name_op == 0x08); /* name */ - ACPI_READ_ARRAY(qts, vgid_table.vgia, addr); - g_assert(memcmp(vgid_table.vgia, "VGIA", 4) == 0); - ACPI_READ_FIELD(qts, vgid_table.val_op, addr); - g_assert(vgid_table.val_op == 0x0C); /* dword */ - ACPI_READ_FIELD(qts, vgid_table.vgia_val, addr); + g_assert(aml[0 /* name_op*/] == 0x08); + g_assert(memcmp(&aml[1 /* name */], "VGIA", 4) == 0); + g_assert(aml[5 /* value op */] == 0x0C /* dword */); + memcpy(&vgia_val, &aml[6 /* value */], 4); + /* The GUID is written at a fixed offset into the fw_cfg file * in order to implement the "OVMF SDT Header probe suppressor" * see docs/specs/vmgenid.txt for more details */ - guid_offset = le32_to_cpu(vgid_table.vgia_val) + VMGENID_GUID_OFFSET; + guid_offset = le32_to_cpu(vgia_val) + VMGENID_GUID_OFFSET; + g_free(table_aml); break; } + g_free(table_aml); } - g_free(tables); + g_free(rsdt); return guid_offset; } |