Felix Held | 4a8cd72 | 2020-04-18 22:26:39 +0200 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
Marc Jones | 2448484 | 2017-05-04 21:17:45 -0600 | [diff] [blame] | 2 | |
Furquan Shaikh | 76cedd2 | 2020-05-02 10:24:23 -0700 | [diff] [blame] | 3 | #include <acpi/acpi.h> |
Marshall Dawson | 4ee83b2 | 2019-05-03 11:44:22 -0600 | [diff] [blame] | 4 | #include <amdblocks/acpi.h> |
Felix Held | e4a7e46 | 2021-03-09 16:42:17 +0100 | [diff] [blame] | 5 | #include <amdblocks/acpimmio.h> |
Felix Held | a5a5295 | 2020-12-01 18:14:01 +0100 | [diff] [blame] | 6 | #include <amdblocks/smi.h> |
Felix Held | a3a66b6 | 2021-02-10 03:29:48 +0100 | [diff] [blame] | 7 | #include <amdblocks/smm.h> |
Felix Held | e4a7e46 | 2021-03-09 16:42:17 +0100 | [diff] [blame] | 8 | #include <arch/hlt.h> |
| 9 | #include <arch/io.h> |
| 10 | #include <console/console.h> |
| 11 | #include <cpu/x86/cache.h> |
| 12 | #include <cpu/x86/smm.h> |
John E. Kabat Jr | 7057a27 | 2017-10-16 20:23:00 -0600 | [diff] [blame] | 13 | #include <elog.h> |
Felix Held | e4a7e46 | 2021-03-09 16:42:17 +0100 | [diff] [blame] | 14 | #include <soc/smi.h> |
| 15 | #include <soc/southbridge.h> |
Felix Held | 2e97897 | 2021-02-10 16:48:23 +0100 | [diff] [blame] | 16 | #include <types.h> |
John E. Kabat Jr | 7057a27 | 2017-10-16 20:23:00 -0600 | [diff] [blame] | 17 | |
Felix Held | a2db88e | 2021-02-10 16:46:11 +0100 | [diff] [blame] | 18 | static void fch_apmc_smi_handler(void) |
Marc Jones | 2448484 | 2017-05-04 21:17:45 -0600 | [diff] [blame] | 19 | { |
Marshall Dawson | 66e62da | 2017-09-27 13:32:38 -0600 | [diff] [blame] | 20 | const uint8_t cmd = inb(pm_acpi_smi_cmd_port()); |
Marc Jones | 2448484 | 2017-05-04 21:17:45 -0600 | [diff] [blame] | 21 | |
| 22 | switch (cmd) { |
Marshall Dawson | e9b862e | 2017-09-22 15:14:46 -0600 | [diff] [blame] | 23 | case APM_CNT_ACPI_ENABLE: |
Raul E Rangel | c7ab9f4 | 2021-12-06 10:53:54 -0700 | [diff] [blame] | 24 | acpi_clear_pm_gpe_status(); |
Marshall Dawson | 4ee83b2 | 2019-05-03 11:44:22 -0600 | [diff] [blame] | 25 | acpi_enable_sci(); |
Marc Jones | 2448484 | 2017-05-04 21:17:45 -0600 | [diff] [blame] | 26 | break; |
Marshall Dawson | e9b862e | 2017-09-22 15:14:46 -0600 | [diff] [blame] | 27 | case APM_CNT_ACPI_DISABLE: |
Marshall Dawson | 4ee83b2 | 2019-05-03 11:44:22 -0600 | [diff] [blame] | 28 | acpi_disable_sci(); |
Marc Jones | 2448484 | 2017-05-04 21:17:45 -0600 | [diff] [blame] | 29 | break; |
Patrick Georgi | d61839c | 2018-12-03 16:10:33 +0100 | [diff] [blame] | 30 | case APM_CNT_ELOG_GSMI: |
Julius Werner | cd49cce | 2019-03-05 16:53:33 -0800 | [diff] [blame] | 31 | if (CONFIG(ELOG_GSMI)) |
Felix Held | 90bcdb4 | 2021-03-08 23:54:18 +0100 | [diff] [blame] | 32 | handle_smi_gsmi(); |
John E. Kabat Jr | 7057a27 | 2017-10-16 20:23:00 -0600 | [diff] [blame] | 33 | break; |
Matt DeVillier | 9cc1603 | 2020-01-19 00:17:29 -0600 | [diff] [blame] | 34 | case APM_CNT_SMMSTORE: |
| 35 | if (CONFIG(SMMSTORE)) |
Felix Held | 90bcdb4 | 2021-03-08 23:54:18 +0100 | [diff] [blame] | 36 | handle_smi_store(); |
Matt DeVillier | 9cc1603 | 2020-01-19 00:17:29 -0600 | [diff] [blame] | 37 | break; |
Marc Jones | 2448484 | 2017-05-04 21:17:45 -0600 | [diff] [blame] | 38 | } |
| 39 | |
| 40 | mainboard_smi_apmc(cmd); |
| 41 | } |
| 42 | |
Felix Held | a2db88e | 2021-02-10 16:46:11 +0100 | [diff] [blame] | 43 | static void fch_slp_typ_handler(void) |
Marshall Dawson | 081851a | 2017-10-02 14:03:57 -0600 | [diff] [blame] | 44 | { |
Marshall Dawson | e1b1ec7 | 2018-10-07 21:45:47 -0600 | [diff] [blame] | 45 | uint32_t pci_ctrl, reg32; |
| 46 | uint16_t pm1cnt, reg16; |
Marshall Dawson | 081851a | 2017-10-02 14:03:57 -0600 | [diff] [blame] | 47 | uint8_t slp_typ, rst_ctrl; |
| 48 | |
| 49 | /* Figure out SLP_TYP */ |
Richard Spiegel | e24d795 | 2018-10-26 13:25:01 -0700 | [diff] [blame] | 50 | pm1cnt = acpi_read16(MMIO_ACPI_PM1_CNT_BLK); |
Marshall Dawson | e1b1ec7 | 2018-10-07 21:45:47 -0600 | [diff] [blame] | 51 | printk(BIOS_SPEW, "SMI#: SLP = 0x%04x\n", pm1cnt); |
Marshall Dawson | 081851a | 2017-10-02 14:03:57 -0600 | [diff] [blame] | 52 | slp_typ = acpi_sleep_from_pm1(pm1cnt); |
| 53 | |
| 54 | /* Do any mainboard sleep handling */ |
| 55 | mainboard_smi_sleep(slp_typ); |
| 56 | |
| 57 | switch (slp_typ) { |
| 58 | case ACPI_S0: |
| 59 | printk(BIOS_DEBUG, "SMI#: Entering S0 (On)\n"); |
| 60 | break; |
| 61 | case ACPI_S3: |
| 62 | printk(BIOS_DEBUG, "SMI#: Entering S3 (Suspend-To-RAM)\n"); |
| 63 | break; |
| 64 | case ACPI_S4: |
| 65 | printk(BIOS_DEBUG, "SMI#: Entering S4 (Suspend-To-Disk)\n"); |
| 66 | break; |
| 67 | case ACPI_S5: |
| 68 | printk(BIOS_DEBUG, "SMI#: Entering S5 (Soft Power off)\n"); |
| 69 | break; |
| 70 | default: |
| 71 | printk(BIOS_DEBUG, "SMI#: ERROR: SLP_TYP reserved\n"); |
| 72 | break; |
| 73 | } |
| 74 | |
| 75 | if (slp_typ >= ACPI_S3) { |
John E. Kabat Jr | 7057a27 | 2017-10-16 20:23:00 -0600 | [diff] [blame] | 76 | /* Sleep Type Elog S3, S4, and S5 entry */ |
Kyösti Mälkki | 9dd1a12 | 2019-11-06 11:04:27 +0200 | [diff] [blame] | 77 | elog_gsmi_add_event_byte(ELOG_TYPE_ACPI_ENTER, slp_typ); |
John E. Kabat Jr | 7057a27 | 2017-10-16 20:23:00 -0600 | [diff] [blame] | 78 | |
Marshall Dawson | 081851a | 2017-10-02 14:03:57 -0600 | [diff] [blame] | 79 | wbinvd(); |
| 80 | |
Felix Held | 4f69ab7 | 2021-02-10 01:26:07 +0100 | [diff] [blame] | 81 | clear_all_smi_status(); |
Marshall Dawson | 081851a | 2017-10-02 14:03:57 -0600 | [diff] [blame] | 82 | |
| 83 | /* Do not send SMI before AcpiPm1CntBlkx00[SlpTyp] */ |
| 84 | pci_ctrl = pm_read32(PM_PCI_CTRL); |
| 85 | pci_ctrl &= ~FORCE_SLPSTATE_RETRY; |
| 86 | pci_ctrl |= FORCE_STPCLK_RETRY; |
| 87 | pm_write32(PM_PCI_CTRL, pci_ctrl); |
| 88 | |
| 89 | /* Enable SlpTyp */ |
| 90 | rst_ctrl = pm_read8(PM_RST_CTRL1); |
| 91 | rst_ctrl |= SLPTYPE_CONTROL_EN; |
| 92 | pm_write8(PM_RST_CTRL1, rst_ctrl); |
| 93 | |
Richard Spiegel | b74e399 | 2018-08-20 13:52:44 -0700 | [diff] [blame] | 94 | /* |
| 95 | * Before the final command, check if there's pending wake |
| 96 | * event. Read enable first, so that reading the actual status |
| 97 | * is as close as possible to entering S3. The idea is to |
| 98 | * minimize the opportunity for a wake event to happen before |
| 99 | * actually entering S3. If there's a pending wake event, log |
| 100 | * it and continue normal path. S3 will fail and the wake event |
| 101 | * becomes a SCI. |
| 102 | */ |
Julius Werner | cd49cce | 2019-03-05 16:53:33 -0800 | [diff] [blame] | 103 | if (CONFIG(ELOG_GSMI)) { |
Richard Spiegel | e24d795 | 2018-10-26 13:25:01 -0700 | [diff] [blame] | 104 | reg16 = acpi_read16(MMIO_ACPI_PM1_EN); |
| 105 | reg16 &= acpi_read16(MMIO_ACPI_PM1_STS); |
Richard Spiegel | b74e399 | 2018-08-20 13:52:44 -0700 | [diff] [blame] | 106 | if (reg16) |
| 107 | elog_add_extended_event( |
| 108 | ELOG_SLEEP_PENDING_PM1_WAKE, |
| 109 | (u32)reg16); |
| 110 | |
Richard Spiegel | e24d795 | 2018-10-26 13:25:01 -0700 | [diff] [blame] | 111 | reg32 = acpi_read32(MMIO_ACPI_GPE0_EN); |
| 112 | reg32 &= acpi_read32(MMIO_ACPI_GPE0_STS); |
Richard Spiegel | b74e399 | 2018-08-20 13:52:44 -0700 | [diff] [blame] | 113 | if (reg32) |
| 114 | elog_add_extended_event( |
| 115 | ELOG_SLEEP_PENDING_GPE0_WAKE, |
| 116 | reg32); |
Julius Werner | cd49cce | 2019-03-05 16:53:33 -0800 | [diff] [blame] | 117 | } /* if (CONFIG(ELOG_GSMI)) */ |
Richard Spiegel | b74e399 | 2018-08-20 13:52:44 -0700 | [diff] [blame] | 118 | |
Richard Spiegel | e24d795 | 2018-10-26 13:25:01 -0700 | [diff] [blame] | 119 | /* |
| 120 | * An IO cycle is required to trigger the STPCLK/STPGNT |
| 121 | * handshake when the Pm1 write is reissued. |
| 122 | */ |
Marshall Dawson | 19cae7c | 2019-05-03 13:06:55 -0600 | [diff] [blame] | 123 | outw(pm1cnt | SLP_EN, pm_read16(PM1_CNT_BLK)); |
Marshall Dawson | 081851a | 2017-10-02 14:03:57 -0600 | [diff] [blame] | 124 | hlt(); |
| 125 | } |
| 126 | } |
| 127 | |
Marc Jones | 2448484 | 2017-05-04 21:17:45 -0600 | [diff] [blame] | 128 | int southbridge_io_trap_handler(int smif) |
| 129 | { |
| 130 | return 0; |
| 131 | } |
| 132 | |
Marshall Dawson | 36a2356 | 2017-09-28 17:21:09 -0600 | [diff] [blame] | 133 | /* |
| 134 | * Table of functions supported in the SMI handler. Note that SMI source setup |
| 135 | * in southbridge.c is unrelated to this list. |
| 136 | */ |
Daniel Kurtz | 963419a | 2018-04-17 17:45:01 -0600 | [diff] [blame] | 137 | static const struct smi_sources_t smi_sources[] = { |
Felix Held | a2db88e | 2021-02-10 16:46:11 +0100 | [diff] [blame] | 138 | { .type = SMITYPE_SMI_CMD_PORT, .handler = fch_apmc_smi_handler }, |
| 139 | { .type = SMITYPE_SLP_TYP, .handler = fch_slp_typ_handler}, |
Marshall Dawson | 36a2356 | 2017-09-28 17:21:09 -0600 | [diff] [blame] | 140 | }; |
| 141 | |
Felix Held | a3a66b6 | 2021-02-10 03:29:48 +0100 | [diff] [blame] | 142 | void *get_smi_source_handler(int source) |
Marc Jones | 2448484 | 2017-05-04 21:17:45 -0600 | [diff] [blame] | 143 | { |
Felix Held | 2e97897 | 2021-02-10 16:48:23 +0100 | [diff] [blame] | 144 | size_t i; |
Marc Jones | 2448484 | 2017-05-04 21:17:45 -0600 | [diff] [blame] | 145 | |
Marshall Dawson | 36a2356 | 2017-09-28 17:21:09 -0600 | [diff] [blame] | 146 | for (i = 0 ; i < ARRAY_SIZE(smi_sources) ; i++) |
| 147 | if (smi_sources[i].type == source) |
| 148 | return smi_sources[i].handler; |
| 149 | |
| 150 | return NULL; |
| 151 | } |