Angel Pons | 89ab250 | 2020-04-03 01:22:28 +0200 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
| 2 | /* This file is part of the coreboot project. */ |
Nicolas Reinecke | b165c4a | 2015-07-04 23:37:06 +0200 | [diff] [blame] | 3 | |
| 4 | #include <arch/io.h> |
| 5 | #include <console/console.h> |
| 6 | #include <cpu/x86/smm.h> |
| 7 | #include <southbridge/intel/ibexpeak/nvs.h> |
| 8 | #include <southbridge/intel/common/pmutil.h> |
Angel Pons | 95de231 | 2020-02-17 13:08:53 +0100 | [diff] [blame] | 9 | #include <northbridge/intel/ironlake/ironlake.h> |
Nicolas Reinecke | b165c4a | 2015-07-04 23:37:06 +0200 | [diff] [blame] | 10 | #include <ec/acpi/ec.h> |
| 11 | #include <ec/lenovo/h8/h8.h> |
| 12 | #include <delay.h> |
| 13 | #include "dock.h" |
| 14 | |
| 15 | #define GPE_EC_SCI 1 |
| 16 | #define GPE_EC_WAKE 13 |
| 17 | |
| 18 | static void mainboard_smi_handle_ec_sci(void) |
| 19 | { |
| 20 | u8 status = inb(EC_SC); |
| 21 | u8 event; |
| 22 | |
| 23 | if (!(status & EC_SCI_EVT)) |
| 24 | return; |
| 25 | |
| 26 | event = ec_query(); |
| 27 | printk(BIOS_DEBUG, "EC event %02x\n", event); |
| 28 | |
| 29 | switch (event) { |
| 30 | case 0x18: |
| 31 | /* Fn-F9 key */ |
| 32 | case 0x27: |
| 33 | /* Power loss */ |
| 34 | case 0x50: |
| 35 | /* Undock Key */ |
| 36 | ec_clr_bit(0x03, 2); |
| 37 | dock_disconnect(); |
| 38 | break; |
| 39 | case 0x37: |
| 40 | case 0x58: |
| 41 | /* Dock Event */ |
| 42 | ec_clr_bit(0x03, 2); |
| 43 | mdelay(250); |
| 44 | dock_connect(); |
| 45 | ec_set_bit(0x03, 2); |
| 46 | /* set dock LED to indicate status */ |
| 47 | ec_write(0x0c, 0x09); |
| 48 | ec_write(0x0c, 0x88); |
| 49 | break; |
| 50 | default: |
| 51 | break; |
| 52 | } |
| 53 | } |
| 54 | |
| 55 | void mainboard_smi_gpi(u32 gpi_sts) |
| 56 | { |
| 57 | if (gpi_sts & (1 << GPE_EC_SCI)) |
| 58 | mainboard_smi_handle_ec_sci(); |
| 59 | } |
| 60 | |
| 61 | int mainboard_smi_apmc(u8 data) |
| 62 | { |
| 63 | switch (data) { |
| 64 | case APM_CNT_ACPI_ENABLE: |
| 65 | /* use 0x1600/0x1604 to prevent races with userspace */ |
| 66 | ec_set_ports(0x1604, 0x1600); |
| 67 | /* route H8SCI to SCI */ |
| 68 | gpi_route_interrupt(GPE_EC_SCI, GPI_IS_SCI); |
| 69 | /* discard all events, and enable attention */ |
| 70 | ec_write(0x80, 0x01); |
| 71 | break; |
| 72 | case APM_CNT_ACPI_DISABLE: |
| 73 | /* we have to use port 0x62/0x66, as 0x1600/0x1604 doesn't |
| 74 | provide a EC query function */ |
| 75 | ec_set_ports(0x66, 0x62); |
| 76 | /* route H8SCI# to SMI */ |
| 77 | gpi_route_interrupt(GPE_EC_SCI, GPI_IS_SMI); |
| 78 | /* discard all events, and enable attention */ |
| 79 | ec_write(0x80, 0x01); |
| 80 | break; |
| 81 | default: |
| 82 | break; |
| 83 | } |
| 84 | return 0; |
| 85 | } |
| 86 | |
| 87 | void mainboard_smi_sleep(u8 slp_typ) |
| 88 | { |
| 89 | if (slp_typ == 3) { |
| 90 | u8 ec_wake = ec_read(0x32); |
| 91 | /* If EC wake events are enabled, enable wake on EC WAKE GPE. */ |
| 92 | if (ec_wake & 0x14) { |
| 93 | /* Redirect EC WAKE GPE to SCI. */ |
| 94 | gpi_route_interrupt(GPE_EC_WAKE, GPI_IS_SCI); |
| 95 | } |
| 96 | } |
| 97 | } |