diff options
Diffstat (limited to 'src/mainboard/samsung/lumpy/smihandler.c')
| -rw-r--r-- | src/mainboard/samsung/lumpy/smihandler.c | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/src/mainboard/samsung/lumpy/smihandler.c b/src/mainboard/samsung/lumpy/smihandler.c new file mode 100644 index 0000000000..4e73a57938 --- /dev/null +++ b/src/mainboard/samsung/lumpy/smihandler.c @@ -0,0 +1,123 @@ +/* + * 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/bd82x6x/nvs.h> +#include <southbridge/intel/bd82x6x/pch.h> +#include <southbridge/intel/bd82x6x/me.h> +#include <northbridge/intel/sandybridge/sandybridge.h> +#include <cpu/intel/model_206ax/model_206ax.h> +#include <ec/smsc/mec1308/ec.h> +#include "ec.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. + */ + //gnvs->smif = 0; + return 1; +} + +static u8 mainboard_smi_ec(void) +{ + u8 cmd; + u32 pm1_cnt; + + cmd = read_ec_command_byte(EC_GET_SMI_CAUSE); + + switch (cmd) { + case EC_LID_CLOSE: + printk(BIOS_DEBUG, "LID CLOSED, SHUTDOWN\n"); + + /* Go to S5 */ + pm1_cnt = inl(smm_get_pmbase() + PM1_CNT); + pm1_cnt |= (0xf << 10); + outl(pm1_cnt, smm_get_pmbase() + PM1_CNT); + break; + } + + return cmd; +} + +void mainboard_smi_gpi(u16 gpi_sts) +{ + if (gpi_sts & (1 << EC_SMI_GPI)) { + /* Process all pending EC requests */ + ec_set_ports(EC_MAILBOX_PORT, EC_MAILBOX_PORT+1); + while (mainboard_smi_ec() != 0xff); + + /* The EC may keep asserting SMI# for some + * period unless we kick it here. + */ + send_ec_command(EC_SMI_DISABLE); + send_ec_command(EC_SMI_ENABLE); + } +} + +#define APMC_FINALIZE 0xcb + +static int mainboard_finalized = 0; + +int mainboard_smi_apmc(u8 apmc) +{ + ec_set_ports(EC_MAILBOX_PORT, EC_MAILBOX_PORT+1); + + switch (apmc) { + case 0xe1: /* ACPI ENABLE */ + send_ec_command(EC_SMI_DISABLE); + send_ec_command(EC_ACPI_ENABLE); + break; + + case 0x1e: /* ACPI DISABLE */ + send_ec_command(EC_SMI_ENABLE); + send_ec_command(EC_ACPI_DISABLE); + break; + + case APMC_FINALIZE: + if (mainboard_finalized) { + printk(BIOS_DEBUG, "SMI#: Already finalized\n"); + return 0; + } + + intel_me_finalize_smm(); + intel_pch_finalize_smm(); + intel_sandybridge_finalize_smm(); + intel_model_206ax_finalize_smm(); + + mainboard_finalized = 1; + break; + } + return 0; +} |