diff options
Diffstat (limited to 'src/mainboard/siemens/chili/ec.c')
| -rw-r--r-- | src/mainboard/siemens/chili/ec.c | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/src/mainboard/siemens/chili/ec.c b/src/mainboard/siemens/chili/ec.c new file mode 100644 index 0000000000..bc0eb7d9ff --- /dev/null +++ b/src/mainboard/siemens/chili/ec.c @@ -0,0 +1,99 @@ +/* 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)); +} |