Commit a37d5472 authored by Igor Mammedov's avatar Igor Mammedov Committed by Michael S. Tsirkin
Browse files

tests: acpi: add acpi_find_rsdp_address_uefi() helper 



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
  (09a274d8 tests: introduce "uefi-test-tools" with the BiosTablesTest UEFI app)

Signed-off-by: default avatarIgor Mammedov <imammedo@redhat.com>
Reviewed-by: default avatarLaszlo Ersek <lersek@redhat.com>
Reviewed-by: default avatarWei Yang <richardw.yang@linux.intel.com>
Message-Id: <1556808723-226478-9-git-send-email-imammedo@redhat.com>
Reviewed-by: default avatarMichael S. Tsirkin <mst@redhat.com>
Signed-off-by: default avatarMichael S. Tsirkin <mst@redhat.com>
parent d47a5d64

tests/acpi-utils.c

+44 −0
Original line number Diff line number Diff line
@@ -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] = {

       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 = 0; i < TEST_CYCLES; ++i) {

        for (j = 0; j < size / MB; j++) {

            /* look for GUID at every 1Mb block */

            uint64_t addr = 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 = le64_to_cpu(ret.rsdp10);

                ret.rsdp20 = le64_to_cpu(ret.rsdp20);

                return ret.rsdp20 ? ret.rsdp20 : ret.rsdp10;

            }

        }

        g_usleep(TEST_DELAY);

    }

    g_assert_not_reached();

    return 0;

}

tests/acpi-utils.h

+2 −0
Original line number Diff line number Diff line
@@ -46,6 +46,8 @@ typedef struct { 


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_table);

void acpi_fetch_table(QTestState *qts, uint8_t **aml, uint32_t *aml_len,

                      const uint8_t *addr_ptr, int addr_size, const char *sig,