diff options
Diffstat (limited to 'src/mainboard/lenovo/t60/mainboard_smi.c')
-rw-r--r-- | src/mainboard/lenovo/t60/mainboard_smi.c | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/src/mainboard/lenovo/t60/mainboard_smi.c b/src/mainboard/lenovo/t60/mainboard_smi.c new file mode 100644 index 0000000000..5e0f6a98b0 --- /dev/null +++ b/src/mainboard/lenovo/t60/mainboard_smi.c @@ -0,0 +1,78 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2008-2009 coresystems GmbH + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, + * MA 02110-1301 USA + */ + +#include <arch/io.h> +#include <arch/romcc_io.h> +#include <console/console.h> +#include <cpu/x86/smm.h> +#include "southbridge/intel/i82801gx/nvs.h" +#include <ec/acpi/ec.h> +#include "dock.h" +#include "smi.h" + +/* The southbridge SMI handler checks whether gnvs has a + * valid pointer before calling the trap handler + */ +extern global_nvs_t *gnvs; + +static void mainboard_smm_init(void) +{ + printk(BIOS_DEBUG, "initializing SMI\n"); + /* Enable 0x1600/0x1600 register pair */ + ec_set_bit(0x00, 0x05); + ec_set_ports(0x1604, 0x1600); +} + +int mainboard_io_trap_handler(int smif) +{ + static int smm_initialized; + + if (!smm_initialized) { + mainboard_smm_init(); + smm_initialized = 1; + } + + switch (smif) { + case SMI_DOCK_CONNECT: + dlpc_init(); + if (!dock_connect()) { + /* set dock LED to indicate status */ + ec_write(0x0c, 0x88); + } else { + /* blink dock LED to indicate failure */ + ec_write(0x0c, 0xc8); + } + break; + + case SMI_DOCK_DISCONNECT: + dock_disconnect(); + ec_write(0x0c, 0x08); + break; + + default: + return 1; + } + + /* On success, the IO Trap Handler returns 0 + * On failure, the IO Trap Handler returns a value != 0 */ + return 0; +} + |