| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <acpi/acpi.h> |
| #include <console/console.h> |
| #include <cpu/x86/smm.h> |
| #include <ec/acpi/ec.h> |
| #include <timer.h> |
| |
| #include "ec.h" |
| |
| #define EC_STATUS 0x50 |
| #define EC_RUNNING (1 << 1) |
| #define EC_DEVICE_CONTROL_1 0x80 |
| #define EC_DEVICE_CONTROL_1_PROGAS_ON (1 << 0) |
| #define EC_DEVICE_CONTROL_1_BOOMER_ON (1 << 1) |
| #define EC_DEVICE_CONTROL_1_BT_RF_ON (1 << 2) |
| #define EC_DEVICE_CONTROL_1_TP_ON (1 << 3) |
| #define EC_DEVICE_CONTROL_1_LAN2_RST (1 << 6) |
| #define EC_DEVICE_CONTROL_2 0x81 |
| #define EC_DEVICE_CONTROL_2_LAN_1_ON (1 << 0) |
| #define EC_DEVICE_CONTROL_2_LAN_2_ON (1 << 1) |
| #define EC_DEVICE_CONTROL_2_WLAN_ON (1 << 2) |
| #define EC_DEVICE_CONTROL_2_USB_ON (1 << 3) |
| #define EC_DEVICE_CONTROL_2_IDE1_ON (1 << 4) |
| #define EC_DEVICE_CONTROL_2_IDE2_ON (1 << 5) |
| #define EC_DEVICE_CONTROL_2_COM1_ON (1 << 6) |
| #define EC_DEVICE_CONTROL_2_MPI_ON (1 << 7) |
| |
| #define RUNNING_TIMEOUT_MS 3333 |
| |
| static bool ec_running(void) |
| { |
| struct stopwatch sw; |
| uint8_t ec_status; |
| |
| stopwatch_init_msecs_expire(&sw, RUNNING_TIMEOUT_MS); |
| do |
| ec_status = ec_read(EC_STATUS); |
| while (!(ec_status & EC_RUNNING) && !stopwatch_expired(&sw)); |
| |
| if (!(ec_status & EC_RUNNING)) |
| printk(BIOS_WARNING, "EC not ready after %dms\n", RUNNING_TIMEOUT_MS); |
| |
| return !!(ec_status & EC_RUNNING); |
| } |
| |
| void ec_enable_devices(bool enable_usb) |
| { |
| uint8_t control_1, control_2; |
| |
| if (!ec_running()) |
| return; |
| |
| control_1 = ec_read(EC_DEVICE_CONTROL_1); |
| control_2 = ec_read(EC_DEVICE_CONTROL_2); |
| |
| printk(BIOS_INFO, "EC previous EDC1: 0x%02x\n", control_1); |
| printk(BIOS_INFO, "EC previous EDC2: 0x%02x\n", control_2); |
| |
| control_1 &= ~(EC_DEVICE_CONTROL_1_BT_RF_ON); |
| control_1 |= EC_DEVICE_CONTROL_1_BOOMER_ON; |
| |
| control_2 &= ~(EC_DEVICE_CONTROL_2_WLAN_ON | EC_DEVICE_CONTROL_2_USB_ON); |
| control_2 |= EC_DEVICE_CONTROL_2_MPI_ON; |
| if (enable_usb) |
| control_2 |= EC_DEVICE_CONTROL_2_USB_ON; |
| |
| ec_write(EC_DEVICE_CONTROL_1, control_1); |
| ec_write(EC_DEVICE_CONTROL_2, control_2); |
| |
| printk(BIOS_INFO, "EC current EDC1: 0x%02x\n", ec_read(EC_DEVICE_CONTROL_1)); |
| printk(BIOS_INFO, "EC current EDC2: 0x%02x\n", ec_read(EC_DEVICE_CONTROL_2)); |
| } |
| |
| void mainboard_smi_sleep(const uint8_t slp_typ) |
| { |
| uint8_t control_1, control_2; |
| |
| if (slp_typ != ACPI_S5) |
| return; |
| |
| if (!ec_running()) |
| return; |
| |
| control_1 = ec_read(EC_DEVICE_CONTROL_1); |
| control_2 = ec_read(EC_DEVICE_CONTROL_2); |
| |
| printk(BIOS_INFO, "EC previous EDC1: 0x%02x\n", control_1); |
| printk(BIOS_INFO, "EC previous EDC2: 0x%02x\n", control_2); |
| |
| control_1 &= ~(EC_DEVICE_CONTROL_1_BOOMER_ON); |
| control_2 &= ~(EC_DEVICE_CONTROL_2_USB_ON | EC_DEVICE_CONTROL_2_MPI_ON); |
| |
| ec_write(EC_DEVICE_CONTROL_1, control_1); |
| ec_write(EC_DEVICE_CONTROL_2, control_2); |
| |
| printk(BIOS_INFO, "EC current EDC1: 0x%02x\n", ec_read(EC_DEVICE_CONTROL_1)); |
| printk(BIOS_INFO, "EC current EDC2: 0x%02x\n", ec_read(EC_DEVICE_CONTROL_2)); |
| } |