/* SPDX-License-Identifier: GPL-2.0-only */ /* This file is part of the coreboot project. */ #include <arch/io.h> #include <console/console.h> #include <cpu/x86/smm.h> #include <southbridge/intel/ibexpeak/nvs.h> #include <southbridge/intel/common/pmutil.h> #include <northbridge/intel/ironlake/ironlake.h> #include <ec/acpi/ec.h> #include <ec/lenovo/h8/h8.h> #include <delay.h> #include "dock.h" #define GPE_EC_SCI 1 #define GPE_EC_WAKE 13 static void mainboard_smi_handle_ec_sci(void) { u8 status = inb(EC_SC); u8 event; if (!(status & EC_SCI_EVT)) return; event = ec_query(); printk(BIOS_DEBUG, "EC event %02x\n", event); switch (event) { case 0x18: /* Fn-F9 key */ case 0x27: /* Power loss */ case 0x50: /* Undock Key */ ec_clr_bit(0x03, 2); dock_disconnect(); break; case 0x37: case 0x58: /* Dock Event */ ec_clr_bit(0x03, 2); mdelay(250); dock_connect(); ec_set_bit(0x03, 2); /* set dock LED to indicate status */ ec_write(0x0c, 0x09); ec_write(0x0c, 0x88); break; default: break; } } void mainboard_smi_gpi(u32 gpi_sts) { if (gpi_sts & (1 << GPE_EC_SCI)) mainboard_smi_handle_ec_sci(); } int mainboard_smi_apmc(u8 data) { switch (data) { case APM_CNT_ACPI_ENABLE: /* use 0x1600/0x1604 to prevent races with userspace */ ec_set_ports(0x1604, 0x1600); /* route H8SCI to SCI */ gpi_route_interrupt(GPE_EC_SCI, GPI_IS_SCI); /* discard all events, and enable attention */ ec_write(0x80, 0x01); break; case APM_CNT_ACPI_DISABLE: /* we have to use port 0x62/0x66, as 0x1600/0x1604 doesn't provide a EC query function */ ec_set_ports(0x66, 0x62); /* route H8SCI# to SMI */ gpi_route_interrupt(GPE_EC_SCI, GPI_IS_SMI); /* discard all events, and enable attention */ ec_write(0x80, 0x01); break; default: break; } return 0; } void mainboard_smi_sleep(u8 slp_typ) { if (slp_typ == 3) { u8 ec_wake = ec_read(0x32); /* If EC wake events are enabled, enable wake on EC WAKE GPE. */ if (ec_wake & 0x14) { /* Redirect EC WAKE GPE to SCI. */ gpi_route_interrupt(GPE_EC_WAKE, GPI_IS_SCI); } } }