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review.coreboot.org / coreboot / e8774933d39fab2cb4eb443f69a583d1fa5bd238 / . / src / mainboard / siemens / chili / ec.c
blob: 7d9b6f249542ac5c8ac63a29ce145b5eb7d898b6 [file] [log] [blame]
Thomas Heijligen819d8722019-03-18 11:32:34 +0100[diff] [blame]1/* SPDX-License-Identifier: GPL-2.0-only */
2
3#include <acpi/acpi.h>
4#include <console/console.h>
5#include <cpu/x86/smm.h>
6#include <ec/acpi/ec.h>
Felix Singere8774932020-11-24 19:27:47 +0000[diff] [blame^]7#include <mainboard/ec.h>
Thomas Heijligen819d8722019-03-18 11:32:34 +0100[diff] [blame]8#include <timer.h>
9
Thomas Heijligen819d8722019-03-18 11:32:34 +0100[diff] [blame]10#define EC_STATUS 0x50
11#define EC_RUNNING (1 << 1)
12#define EC_DEVICE_CONTROL_1 0x80
13#define EC_DEVICE_CONTROL_1_PROGAS_ON (1 << 0)
14#define EC_DEVICE_CONTROL_1_BOOMER_ON (1 << 1)
15#define EC_DEVICE_CONTROL_1_BT_RF_ON (1 << 2)
16#define EC_DEVICE_CONTROL_1_TP_ON (1 << 3)
17#define EC_DEVICE_CONTROL_1_LAN2_RST (1 << 6)
18#define EC_DEVICE_CONTROL_2 0x81
19#define EC_DEVICE_CONTROL_2_LAN_1_ON (1 << 0)
20#define EC_DEVICE_CONTROL_2_LAN_2_ON (1 << 1)
21#define EC_DEVICE_CONTROL_2_WLAN_ON (1 << 2)
22#define EC_DEVICE_CONTROL_2_USB_ON (1 << 3)
23#define EC_DEVICE_CONTROL_2_IDE1_ON (1 << 4)
24#define EC_DEVICE_CONTROL_2_IDE2_ON (1 << 5)
25#define EC_DEVICE_CONTROL_2_COM1_ON (1 << 6)
26#define EC_DEVICE_CONTROL_2_MPI_ON (1 << 7)
27
28#define RUNNING_TIMEOUT_MS 3333
29
30static bool ec_running(void)
31{
32 struct stopwatch sw;
33 uint8_t ec_status;
34
35 stopwatch_init_msecs_expire(&sw, RUNNING_TIMEOUT_MS);
36 do
37 ec_status = ec_read(EC_STATUS);
38 while (!(ec_status & EC_RUNNING) && !stopwatch_expired(&sw));
39
40 if (!(ec_status & EC_RUNNING))
41 printk(BIOS_WARNING, "EC not ready after %dms\n", RUNNING_TIMEOUT_MS);
42
43 return !!(ec_status & EC_RUNNING);
44}
45
46void ec_enable_devices(bool enable_usb)
47{
48 uint8_t control_1, control_2;
49
50 if (!ec_running())
51 return;
52
53 control_1 = ec_read(EC_DEVICE_CONTROL_1);
54 control_2 = ec_read(EC_DEVICE_CONTROL_2);
55
56 printk(BIOS_INFO, "EC previous EDC1: 0x%02x\n", control_1);
57 printk(BIOS_INFO, "EC previous EDC2: 0x%02x\n", control_2);
58
59 control_1 &= ~(EC_DEVICE_CONTROL_1_BT_RF_ON);
60 control_1 |= EC_DEVICE_CONTROL_1_BOOMER_ON;
61
62 control_2 &= ~(EC_DEVICE_CONTROL_2_WLAN_ON | EC_DEVICE_CONTROL_2_USB_ON);
63 control_2 |= EC_DEVICE_CONTROL_2_MPI_ON;
64 if (enable_usb)
65 control_2 |= EC_DEVICE_CONTROL_2_USB_ON;
66
67 ec_write(EC_DEVICE_CONTROL_1, control_1);
68 ec_write(EC_DEVICE_CONTROL_2, control_2);
69
70 printk(BIOS_INFO, "EC current EDC1: 0x%02x\n", ec_read(EC_DEVICE_CONTROL_1));
71 printk(BIOS_INFO, "EC current EDC2: 0x%02x\n", ec_read(EC_DEVICE_CONTROL_2));
72}
73
74void mainboard_smi_sleep(const uint8_t slp_typ)
75{
76 uint8_t control_1, control_2;
77
78 if (slp_typ != ACPI_S5)
79 return;
80
81 if (!ec_running())
82 return;
83
84 control_1 = ec_read(EC_DEVICE_CONTROL_1);
85 control_2 = ec_read(EC_DEVICE_CONTROL_2);
86
87 printk(BIOS_INFO, "EC previous EDC1: 0x%02x\n", control_1);
88 printk(BIOS_INFO, "EC previous EDC2: 0x%02x\n", control_2);
89
90 control_1 &= ~(EC_DEVICE_CONTROL_1_BOOMER_ON);
91 control_2 &= ~(EC_DEVICE_CONTROL_2_USB_ON | EC_DEVICE_CONTROL_2_MPI_ON);
92
93 ec_write(EC_DEVICE_CONTROL_1, control_1);
94 ec_write(EC_DEVICE_CONTROL_2, control_2);
95
96 printk(BIOS_INFO, "EC current EDC1: 0x%02x\n", ec_read(EC_DEVICE_CONTROL_1));
97 printk(BIOS_INFO, "EC current EDC2: 0x%02x\n", ec_read(EC_DEVICE_CONTROL_2));
98}