Lee Leahy | 5cb9dda | 2015-05-01 10:34:54 -0700 | [diff] [blame] | 1 | /* |
| 2 | * This file is part of the coreboot project. |
| 3 | * |
| 4 | * Copyright (C) 2008-2009 coresystems GmbH |
| 5 | * Copyright (C) 2015 Intel Corp. |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; version 2 of the License. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
Lee Leahy | 5cb9dda | 2015-05-01 10:34:54 -0700 | [diff] [blame] | 15 | */ |
| 16 | |
| 17 | #include <arch/io.h> |
| 18 | #include <console/console.h> |
| 19 | #include <cpu/x86/smm.h> |
| 20 | #include "ec.h" |
| 21 | |
| 22 | #include <ec/google/chromeec/ec.h> |
| 23 | #include <elog.h> |
| 24 | |
| 25 | #include <soc/nvs.h> |
| 26 | #include <soc/pm.h> |
| 27 | #include <soc/gpio.h> |
| 28 | |
| 29 | #include "onboard.h" |
| 30 | |
| 31 | /* The wake gpio is SUS_GPIO[0]. */ |
| 32 | #define WAKE_GPIO_EN SUS_GPIO_EN0 |
| 33 | |
| 34 | int mainboard_io_trap_handler(int smif) |
| 35 | { |
| 36 | switch (smif) { |
| 37 | case 0x99: |
| 38 | printk(BIOS_DEBUG, "Sample\n"); |
| 39 | smm_get_gnvs()->smif = 0; |
| 40 | break; |
| 41 | default: |
| 42 | return 0; |
| 43 | } |
| 44 | |
| 45 | /* |
| 46 | * On success, the IO Trap Handler returns 0 |
| 47 | * On failure, the IO Trap Handler returns a value != 0 |
| 48 | * |
| 49 | * For now, we force the return value to 0 and log all traps to |
| 50 | * see what's going on. |
| 51 | */ |
| 52 | //gnvs->smif = 0; |
| 53 | return 1; |
| 54 | } |
| 55 | |
| 56 | #if IS_ENABLED(CONFIG_EC_GOOGLE_CHROMEEC) |
| 57 | static uint8_t mainboard_smi_ec(void) |
| 58 | { |
| 59 | uint8_t cmd = google_chromeec_get_event(); |
| 60 | uint16_t pmbase = get_pmbase(); |
| 61 | uint32_t pm1_cnt; |
| 62 | |
| 63 | #if IS_ENABLED(CONFIG_ELOG_GSMI) |
| 64 | /* Log this event */ |
| 65 | if (cmd) |
| 66 | elog_add_event_byte(ELOG_TYPE_EC_EVENT, cmd); |
| 67 | #endif |
| 68 | |
| 69 | switch (cmd) { |
| 70 | case EC_HOST_EVENT_LID_CLOSED: |
| 71 | printk(BIOS_DEBUG, "LID CLOSED, SHUTDOWN\n"); |
| 72 | |
| 73 | /* Go to S5 */ |
| 74 | pm1_cnt = inl(pmbase + PM1_CNT); |
| 75 | pm1_cnt |= SLP_EN | (SLP_TYP_S5 << SLP_TYP_SHIFT); |
| 76 | outl(pm1_cnt, pmbase + PM1_CNT); |
| 77 | break; |
| 78 | } |
| 79 | |
| 80 | return cmd; |
| 81 | } |
| 82 | #endif |
| 83 | |
| 84 | /* |
| 85 | * The entire 32-bit ALT_GPIO_SMI register is passed as a parameter. Note, that |
| 86 | * this includes the enable bits in the lower 16 bits. |
| 87 | */ |
| 88 | void mainboard_smi_gpi(uint32_t alt_gpio_smi) |
| 89 | { |
| 90 | #if IS_ENABLED(CONFIG_EC_GOOGLE_CHROMEEC) |
| 91 | if (alt_gpio_smi & (1 << EC_SMI_GPI)) { |
| 92 | /* Process all pending events */ |
| 93 | while (mainboard_smi_ec() != 0) |
| 94 | ; |
| 95 | } |
| 96 | #endif |
| 97 | } |
| 98 | |
| 99 | void mainboard_smi_sleep(uint8_t slp_typ) |
| 100 | { |
| 101 | /* Disable USB charging if required */ |
| 102 | switch (slp_typ) { |
| 103 | case 3: |
| 104 | #if IS_ENABLED(CONFIG_EC_GOOGLE_CHROMEEC) |
| 105 | if (smm_get_gnvs()->s3u0 == 0) |
| 106 | google_chromeec_set_usb_charge_mode( |
| 107 | 0, USB_CHARGE_MODE_DISABLED); |
| 108 | if (smm_get_gnvs()->s3u1 == 0) |
| 109 | google_chromeec_set_usb_charge_mode( |
| 110 | 1, USB_CHARGE_MODE_DISABLED); |
| 111 | |
| 112 | /* Enable wake events */ |
| 113 | google_chromeec_set_wake_mask(MAINBOARD_EC_S3_WAKE_EVENTS); |
| 114 | #endif |
| 115 | /* Enable wake pin in GPE block. */ |
| 116 | enable_gpe(WAKE_GPIO_EN); |
| 117 | break; |
| 118 | case 5: |
| 119 | #if IS_ENABLED(CONFIG_EC_GOOGLE_CHROMEEC) |
| 120 | if (smm_get_gnvs()->s5u0 == 0) |
| 121 | google_chromeec_set_usb_charge_mode( |
| 122 | 0, USB_CHARGE_MODE_DISABLED); |
| 123 | if (smm_get_gnvs()->s5u1 == 0) |
| 124 | google_chromeec_set_usb_charge_mode( |
| 125 | 1, USB_CHARGE_MODE_DISABLED); |
| 126 | |
| 127 | /* Enable wake events */ |
| 128 | google_chromeec_set_wake_mask(MAINBOARD_EC_S5_WAKE_EVENTS); |
| 129 | #endif |
| 130 | break; |
| 131 | } |
| 132 | |
| 133 | #if IS_ENABLED(CONFIG_EC_GOOGLE_CHROMEEC) |
| 134 | /* Disable SCI and SMI events */ |
| 135 | google_chromeec_set_smi_mask(0); |
| 136 | google_chromeec_set_sci_mask(0); |
| 137 | |
| 138 | /* Clear pending events that may trigger immediate wake */ |
| 139 | while (google_chromeec_get_event() != 0) |
| 140 | ; |
| 141 | |
| 142 | if (smm_get_gnvs()->bdid == BOARD_DVT) { |
| 143 | /* Set LPC lines to low power in S3/S5. */ |
| 144 | if ((slp_typ == SLEEP_STATE_S3) || (slp_typ == SLEEP_STATE_S5)) |
| 145 | lpc_set_low_power(); |
| 146 | } |
| 147 | #endif |
| 148 | } |
| 149 | |
| 150 | int mainboard_smi_apmc(uint8_t apmc) |
| 151 | { |
| 152 | switch (apmc) { |
| 153 | case APM_CNT_ACPI_ENABLE: |
| 154 | #if IS_ENABLED(CONFIG_EC_GOOGLE_CHROMEEC) |
| 155 | google_chromeec_set_smi_mask(0); |
| 156 | /* Clear all pending events */ |
| 157 | while (google_chromeec_get_event() != 0) |
| 158 | ; |
| 159 | google_chromeec_set_sci_mask(MAINBOARD_EC_SCI_EVENTS); |
| 160 | #endif |
| 161 | break; |
| 162 | case APM_CNT_ACPI_DISABLE: |
| 163 | #if IS_ENABLED(CONFIG_EC_GOOGLE_CHROMEEC) |
| 164 | google_chromeec_set_sci_mask(0); |
| 165 | /* Clear all pending events */ |
| 166 | while (google_chromeec_get_event() != 0) |
| 167 | ; |
| 168 | google_chromeec_set_smi_mask(MAINBOARD_EC_SMI_EVENTS); |
| 169 | #endif |
| 170 | break; |
| 171 | } |
| 172 | return 0; |
| 173 | } |