diff options
Diffstat (limited to 'src/mainboard/intel/cannonlake_rvp/smihandler.c')
| -rw-r--r-- | src/mainboard/intel/cannonlake_rvp/smihandler.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/src/mainboard/intel/cannonlake_rvp/smihandler.c b/src/mainboard/intel/cannonlake_rvp/smihandler.c new file mode 100644 index 0000000000..0f05351bae --- /dev/null +++ b/src/mainboard/intel/cannonlake_rvp/smihandler.c @@ -0,0 +1,42 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2008-2009 coresystems GmbH + * Copyright (C) 2017 Intel Corp. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <arch/acpi.h> +#include <arch/io.h> +#include <console/console.h> +#include <cpu/x86/smm.h> +#include <intelblocks/smihandler.h> +#include <soc/nvs.h> + +int mainboard_io_trap_handler(int smif) +{ + switch (smif) { + case 0x99: + printk(BIOS_DEBUG, "Sample\n"); + smm_get_gnvs()->smif = 0; + break; + default: + return 0; + } + + /* On success, the IO Trap Handler returns 0 + * On failure, the IO Trap Handler returns a value != 0 + * + * For now, we force the return value to 0 and log all traps to + * see what's going on. + */ + return 1; +} |