Commit ad6423a7 authored by Michael S. Tsirkin's avatar Michael S. Tsirkin
Browse files

acpi-test: basic acpi unit-test 



We run bios, and boot a minimal boot sector that immediately halts.
Then poke at memory to find ACPI tables.

This only checks that RSDP is there.
More will be added later.

Cc: Andreas Färber <afaerber@suse.de>
Cc: Markus Armbruster <armbru@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: default avatarMichael S. Tsirkin <mst@redhat.com>
parent d4fce24f

tests/Makefile

+2 −0
Original line number Diff line number Diff line
@@ -64,6 +64,7 @@ check-qtest-i386-y += tests/ide-test$(EXESUF) 
check-qtest-i386-y += tests/hd-geo-test$(EXESUF)

gcov-files-i386-y += hw/hd-geometry.c

check-qtest-i386-y += tests/boot-order-test$(EXESUF)

check-qtest-i386-y += tests/acpi-test$(EXESUF)

check-qtest-i386-y += tests/rtc-test$(EXESUF)

check-qtest-i386-y += tests/i440fx-test$(EXESUF)

check-qtest-i386-y += tests/fw_cfg-test$(EXESUF)
@@ -198,6 +199,7 @@ tests/fdc-test$(EXESUF): tests/fdc-test.o 
tests/ide-test$(EXESUF): tests/ide-test.o $(libqos-pc-obj-y)

tests/hd-geo-test$(EXESUF): tests/hd-geo-test.o

tests/boot-order-test$(EXESUF): tests/boot-order-test.o $(libqos-obj-y)

tests/acpi-test$(EXESUF): tests/acpi-test.o $(libqos-obj-y)

tests/tmp105-test$(EXESUF): tests/tmp105-test.o $(libqos-omap-obj-y)

tests/i440fx-test$(EXESUF): tests/i440fx-test.o $(libqos-pc-obj-y)

tests/fw_cfg-test$(EXESUF): tests/fw_cfg-test.o $(libqos-pc-obj-y)

tests/acpi-test.c

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+135 −0
Original line number Diff line number Diff line 
/*

 * Boot order test cases.

 *

 * Copyright (c) 2013 Red Hat Inc.

 *

 * Authors:

 *  Michael S. Tsirkin <mst@redhat.com>,

 *

 * This work is licensed under the terms of the GNU GPL, version 2 or later.

 * See the COPYING file in the top-level directory.

 */



#include <string.h>

#include <stdio.h>

#include <glib.h>

#include "libqtest.h"



typedef struct {

    const char *args;

    uint64_t expected_boot;

    uint64_t expected_reboot;

} boot_order_test;



#define LOW(x) ((x) & 0xff)

#define HIGH(x) ((x) >> 8)



#define SIGNATURE 0xdead

#define SIGNATURE_OFFSET 0x10

#define BOOT_SECTOR_ADDRESS 0x7c00



/* Boot sector code: write SIGNATURE into memory,

 * then halt.

 */

static uint8_t boot_sector[0x200] = {

    /* 7c00: mov $0xdead,%ax */

    [0x00] = 0xb8,

    [0x01] = LOW(SIGNATURE),

    [0x02] = HIGH(SIGNATURE),

    /* 7c03:  mov %ax,0x7c10 */

    [0x03] = 0xa3,

    [0x04] = LOW(BOOT_SECTOR_ADDRESS + SIGNATURE_OFFSET),

    [0x05] = HIGH(BOOT_SECTOR_ADDRESS + SIGNATURE_OFFSET),

    /* 7c06: cli */

    [0x06] = 0xfa,

    /* 7c07: hlt */

    [0x07] = 0xf4,

    /* 7c08: jmp 0x7c07=0x7c0a-3 */

    [0x08] = 0xeb,

    [0x09] = LOW(-3),

    /* We mov 0xdead here: set value to make debugging easier */

    [SIGNATURE_OFFSET] = LOW(0xface),

    [SIGNATURE_OFFSET + 1] = HIGH(0xface),

    /* End of boot sector marker */

    [0x1FE] = 0x55,

    [0x1FF] = 0xAA,

};



static const char *disk = "tests/acpi-test-disk.raw";



static void test_acpi_one(const char *params)

{

    char *args;

    uint8_t signature_low;

    uint8_t signature_high;

    uint16_t signature;

    int i;

    uint32_t off;





    args = g_strdup_printf("-net none -display none %s %s",

                           params ? params : "", disk);

    qtest_start(args);



   /* Wait at most 1 minute */

#define TEST_DELAY (1 * G_USEC_PER_SEC / 10)

#define TEST_CYCLES MAX((60 * G_USEC_PER_SEC / TEST_DELAY), 1)



    /* Poll until code has run and modified memory.  Once it has we know BIOS

     * initialization is done.  TODO: check that IP reached the halt

     * instruction.

     */

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

        signature_low = readb(BOOT_SECTOR_ADDRESS + SIGNATURE_OFFSET);

        signature_high = readb(BOOT_SECTOR_ADDRESS + SIGNATURE_OFFSET + 1);

        signature = (signature_high << 8) | signature_low;

        if (signature == SIGNATURE) {

            break;

        }

        g_usleep(TEST_DELAY);

    }

    g_assert_cmphex(signature, ==, SIGNATURE);



    /* OK, now find RSDP */

    for (off = 0xf0000; off < 0x100000; off += 0x10)

    {

        uint8_t sig[] = "RSD PTR ";

        int i;



        for (i = 0; i < sizeof sig - 1; ++i) {

            sig[i] = readb(off + i);

        }



        if (!memcmp(sig, "RSD PTR ", sizeof sig)) {

            break;

        }

    }



    g_assert_cmphex(off, <, 0x100000);



    qtest_quit(global_qtest);

    g_free(args);

}



static void test_acpi_tcg(void)

{

    /* Supplying -machine accel argument overrides the default (qtest).

     * This is to make guest actually run.

     */

    test_acpi_one("-machine accel=tcg");

}



int main(int argc, char *argv[])

{

    const char *arch = qtest_get_arch();

    FILE *f = fopen(disk, "w");

    fwrite(boot_sector, 1, sizeof boot_sector, f);

    fclose(f);



    g_test_init(&argc, &argv, NULL);



    if (strcmp(arch, "i386") == 0 || strcmp(arch, "x86_64") == 0) {

        qtest_add_func("acpi/tcg", test_acpi_tcg);

    }

    return g_test_run();

}