/*
* platform specific functions for tem
*/
int
plat_stdout_is_framebuffer(void)
{
if (vbe_available() && VBE_VALID_MODE(vbe_get_mode())) {
return (1);
}
return (0);
}
void do_vesa_int()
{
int err_code = VBE_ERROR_GENERAL_FAIL;
#if 0
v_printf(
"VBE: function 0x%02x, bx = 0x%04x cx = 0x%04x, dx = 0x%04x, es = 0x%04x, di = 0x%04x\n",
(unsigned) _AL, (unsigned) _BX, (unsigned) _CX, (unsigned) _DX, (unsigned) _ES, (unsigned) _DI
);
#endif
switch(_AL) {
case 0x00: /* return VBE controller info */
err_code = vbe_info(SEGOFF2LINEAR(_ES, _DI));
break;
case 0x01: /* return VBE mode info */
err_code = vbe_mode_info(_CX, SEGOFF2LINEAR(_ES, _DI));
break;
case 0x02: /* set VBE mode */
err_code = vbe_set_mode(_BX);
break;
case 0x03: /* get current VBE mode */
err_code = vbe_get_mode();
break;
case 0x04: /* save/restore state */
err_code = vbe_save_restore(_DL, _CX, SEGOFF2LINEAR(_ES, _BX));
break;
case 0x05: /* display window control (aka set/get bank) */
err_code = vbe_display_window(_BH, _BL, _DL /* must be _DX !!!*/);
break;
case 0x06: /* set/get logical scan line length */
err_code = vbe_scan_length(_BL, _CX);
break;
case 0x07: /* set/get display start */
err_code = vbe_display_start(_BL, _CX, _DX);
break;
case 0x08: /* set/get DAC palette format */
err_code = vbe_dac_format(_BL, _BH);
break;
case 0x09: /* set/get palette data */
err_code = vbe_palette_data(_BL, _CX, _DX, SEGOFF2LINEAR(_ES, _DI));
break;
case 0x0a: /* return VBE PM interface */
err_code = vbe_pm_interface(_BL);
break;
case 0x10: /* set/get display power state */
err_code = vbe_power_state(_BL, _BH);
break;
default:
err_code = VBE_ERROR_UNSUP;
#ifdef DEBUG_VBE
v_printf(
"VBE: unsupported function 0x%02x, retval = %d, bx = 0x%04x cx = 0x%04x, dx = 0x%04x, es = 0x%04x, di = 0x%04x\n",
(unsigned) _AL, err_code, (unsigned) _BX, (unsigned) _CX, (unsigned) _DX, (unsigned) _ES, (unsigned) _DI
);
#endif
}
if(err_code >= 0) {
_AL = 0x4f;
_AH = (unsigned char) err_code;
}
}
