This moves the sandybridge both smm setup and smihandler code to a common place. Tested on Thinkpad X220, still boots, resume to and from S3 is fine so smihandler is still working fine. Change-Id: I28e2e6ad1e95a9e14462a456726a144ccdc63ec9 Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/23427 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Patrick Georgi <pgeorgi@google.com>
87 lines
2.1 KiB
C
87 lines
2.1 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2008-2009 coresystems GmbH
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* Copyright (C) 2016 Patrick Rudolph <siro@das-labor.org>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; version 2 of
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* the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <arch/io.h>
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#include <console/console.h>
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#include <cpu/x86/smm.h>
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#include <ec/acpi/ec.h>
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#include <ec/lenovo/h8/h8.h>
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#include <southbridge/intel/common/pmutil.h>
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#include <southbridge/intel/bd82x6x/pch.h>
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#define GPE_EC_SCI 6
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/* FIXME: check this */
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#define GPE_EC_WAKE 13
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static void mainboard_smi_handle_ec_sci(void)
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{
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u8 status = inb(EC_SC);
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u8 event;
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if (!(status & EC_SCI_EVT))
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return;
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event = ec_query();
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printk(BIOS_DEBUG, "EC event %02x\n", event);
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}
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void mainboard_smi_gpi(u32 gpi_sts)
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{
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if (gpi_sts & (1 << GPE_EC_SCI))
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mainboard_smi_handle_ec_sci();
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}
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int mainboard_smi_apmc(u8 data)
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{
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switch (data) {
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case APM_CNT_ACPI_ENABLE:
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/* use 0x1600/0x1604 to prevent races with userspace */
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ec_set_ports(0x1604, 0x1600);
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/* route EC_SCI to SCI */
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gpi_route_interrupt(GPE_EC_SCI, GPI_IS_SCI);
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/* discard all events, and enable attention */
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ec_write(0x80, 0x01);
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break;
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case APM_CNT_ACPI_DISABLE:
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/* we have to use port 0x62/0x66, as 0x1600/0x1604 doesn't
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provide a EC query function */
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ec_set_ports(0x66, 0x62);
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/* route EC_SCI to SMI */
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gpi_route_interrupt(GPE_EC_SCI, GPI_IS_SMI);
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/* discard all events, and enable attention */
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ec_write(0x80, 0x01);
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break;
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default:
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break;
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}
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return 0;
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}
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void mainboard_smi_sleep(u8 slp_typ)
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{
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h8_usb_always_on();
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if (slp_typ == 3) {
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u8 ec_wake = ec_read(0x32);
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/* If EC wake events are enabled, enable wake on EC WAKE GPE. */
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if (ec_wake & 0x14) {
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/* Redirect EC WAKE GPE to SCI. */
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gpi_route_interrupt(GPE_EC_WAKE, GPI_IS_SCI);
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}
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}
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}
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