Archipelago » qemu

static void rtas_display_character(sPAPREnvironment *spapr,

                                   uint32_t token, uint32_t nargs,

                                   target_ulong args,

                                   uint32_t nret, target_ulong rets)

{

    uint8_t c = rtas_ld(args, 0);

    VIOsPAPRDevice *sdev = spapr_vio_find_by_reg(spapr->vio_bus, 0);

    if (!sdev) {

        rtas_st(rets, 0, -1);

    } else {

        vty_putchars(sdev, &c, sizeof(c));

        rtas_st(rets, 0, 0);

    }

}

static void rtas_get_time_of_day(sPAPREnvironment *spapr,

                                 uint32_t token, uint32_t nargs,

                                 target_ulong args,

                                 uint32_t nret, target_ulong rets)

{

    struct tm tm;

    if (nret != 8) {

        rtas_st(rets, 0, -3);

        return;

    }

    qemu_get_timedate(&tm, 0);

    rtas_st(rets, 0, 0); /* Success */

    rtas_st(rets, 1, tm.tm_year + 1900);

    rtas_st(rets, 2, tm.tm_mon + 1);

    rtas_st(rets, 3, tm.tm_mday);

    rtas_st(rets, 4, tm.tm_hour);

    rtas_st(rets, 5, tm.tm_min);

    rtas_st(rets, 6, tm.tm_sec);

    rtas_st(rets, 7, 0); /* we don't do nanoseconds */

}

static void rtas_power_off(sPAPREnvironment *spapr,

                           uint32_t token, uint32_t nargs, target_ulong args,

                           uint32_t nret, target_ulong rets)

{

    if (nargs != 2 || nret != 1) {

        rtas_st(rets, 0, -3);

        return;

    }

    qemu_system_shutdown_request();

    rtas_st(rets, 0, 0);

}

    /* HACK: Some Linux early debug code uses RTAS display-character,

     * but assumes the token value is 0xa (which it is on some real

     * machines) without looking it up in the device tree.  This

     * special case makes this work */

    if (token == 0xa) {

        rtas_display_character(spapr, 0xa, nargs, args, nret, rets);

        return H_SUCCESS;

    }

static void register_core_rtas(void)

{

    spapr_rtas_register("display-character", rtas_display_character);

    spapr_rtas_register("get-time-of-day", rtas_get_time_of_day);

    spapr_rtas_register("power-off", rtas_power_off);

}

device_init(register_core_rtas);