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Tsirkin" , Laszlo Ersek , linuxarm@huawei.com, Shameer Kolothum , Shannon Zhao , Gonglei , Wei Yang , xuwei5@huawei.com, xuwei5@hisilicon.com, =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" introduce UEFI specific counterpart to acpi_find_rsdp_address() that will help to find RSDP address when [OA]VMF is used as firmware. It requires guest firmware or other guest app to place 1Mb aligned UefiTestSupport structure (defined in this patch) in RAM with UefiTestSupport::signature_guid set to AB87A6B1-2034-BDA0-71BD-375007757785 For test app details see commit (09a274d82f tests: introduce "uefi-test-tools" with the BiosTablesTest UE= FI app) Signed-off-by: Igor Mammedov Reviewed-by: Laszlo Ersek Reviewed-by: Wei Yang --- v4: * update commit message to point to commit which introduced signature_guid value. v3: * fix checkpatch error (separate opening brace from values in AcpiTestSup= portGuid initializer) v2: * Laszlo Ersek - s/uefi_find_rsdp_addr/acpi_find_rsdp_address_uefi/ - use GUID_SIZE instead of opencodding size - make AcpiTestSupportGuid const - s/TCI/TCG/ --- tests/acpi-utils.h | 2 ++ tests/acpi-utils.c | 44 ++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 46 insertions(+) diff --git a/tests/acpi-utils.h b/tests/acpi-utils.h index 1da6c10..52c529e 100644 --- a/tests/acpi-utils.h +++ b/tests/acpi-utils.h @@ -46,6 +46,8 @@ typedef struct { =20 uint8_t acpi_calc_checksum(const uint8_t *data, int len); uint32_t acpi_find_rsdp_address(QTestState *qts); +uint64_t acpi_find_rsdp_address_uefi(QTestState *qts, uint64_t start, + uint64_t size); void acpi_fetch_rsdp_table(QTestState *qts, uint64_t addr, uint8_t *rsdp_t= able); void acpi_fetch_table(QTestState *qts, uint8_t **aml, uint32_t *aml_len, const uint8_t *addr_ptr, int addr_size, const char *= sig, diff --git a/tests/acpi-utils.c b/tests/acpi-utils.c index c216b9e..d2a202e 100644 --- a/tests/acpi-utils.c +++ b/tests/acpi-utils.c @@ -101,3 +101,47 @@ void acpi_fetch_table(QTestState *qts, uint8_t **aml, = uint32_t *aml_len, g_assert(!acpi_calc_checksum(*aml, *aml_len)); } } + +#define GUID_SIZE 16 +static const uint8_t AcpiTestSupportGuid[GUID_SIZE] =3D { + 0xb1, 0xa6, 0x87, 0xab, + 0x34, 0x20, + 0xa0, 0xbd, + 0x71, 0xbd, 0x37, 0x50, 0x07, 0x75, 0x77, 0x85 }; + +typedef struct { + uint8_t signature_guid[GUID_SIZE]; + uint64_t rsdp10; + uint64_t rsdp20; +} __attribute__((packed)) UefiTestSupport; + +/* Wait at most 600 seconds (test is slow with TCG and --enable-debug) */ +#define TEST_DELAY (1 * G_USEC_PER_SEC / 10) +#define TEST_CYCLES MAX((600 * G_USEC_PER_SEC / TEST_DELAY), 1) +#define MB 0x100000ULL +uint64_t acpi_find_rsdp_address_uefi(QTestState *qts, uint64_t start, + uint64_t size) +{ + int i, j; + uint8_t data[GUID_SIZE]; + + for (i =3D 0; i < TEST_CYCLES; ++i) { + for (j =3D 0; j < size / MB; j++) { + /* look for GUID at every 1Mb block */ + uint64_t addr =3D start + j * MB; + + qtest_memread(qts, addr, data, sizeof(data)); + if (!memcmp(AcpiTestSupportGuid, data, sizeof(data))) { + UefiTestSupport ret; + + qtest_memread(qts, addr, &ret, sizeof(ret)); + ret.rsdp10 =3D le64_to_cpu(ret.rsdp10); + ret.rsdp20 =3D le64_to_cpu(ret.rsdp20); + return ret.rsdp20 ? ret.rsdp20 : ret.rsdp10; + } + } + g_usleep(TEST_DELAY); + } + g_assert_not_reached(); + return 0; +} --=20 2.7.4