1 /* SPDX-License-Identifier: GPL-2.0-only */
2
3 #include <device/device.h>
4 #include <console/console.h>
5 #include <drivers/intel/gma/int15.h>
6 #include <ec/acpi/ec.h>
7 #include <southbridge/intel/common/gpio.h>
8 #include <stdio.h>
9 #include <string.h>
10 #include <smbios.h>
11 #include "ec.h"
12
13 #include <acpi/acpi.h>
14
mainboard_fill_ec_version(char * buf,u8 buf_len)15 static u8 mainboard_fill_ec_version(char *buf, u8 buf_len)
16 {
17 u8 i, c;
18 char str[16 + 1]; /* 16 ASCII chars + \0 */
19
20 /* Build ID */
21 for (i = 0; i < 8; i++) {
22 c = ec_mm_read(0xf0 + i);
23 if (c < 0x20 || c > 0x7f) {
24 i = snprintf(str, sizeof(str), "*INVALID");
25 break;
26 }
27 str[i] = c;
28 }
29
30 i = MIN(buf_len, i);
31 memcpy(buf, str, i);
32
33 return i;
34 }
35
mainboard_smbios_strings(struct device * dev,struct smbios_type11 * t)36 static void mainboard_smbios_strings(
37 struct device *dev, struct smbios_type11 *t)
38 {
39 char tpec[] = "IBM ThinkPad Embedded Controller -[ ]-";
40 u16 fwvh, fwvl;
41
42 mainboard_fill_ec_version(tpec + 35, 17);
43 t->count = smbios_add_string(t->eos, tpec);
44
45 /* Apparently byteswapped compared to H8 */
46 fwvh = ec_mm_read(0xe8);
47 fwvl = ec_mm_read(0xe9);
48
49 printk(BIOS_INFO, "EC Firmware ID %.54s, Version %d.%d%d%c\n", tpec,
50 fwvh >> 4, fwvh & 0x0f, fwvl >> 4, 0x41 + (fwvl & 0xf));
51 }
52
mainboard_enable(struct device * dev)53 static void mainboard_enable(struct device *dev)
54 {
55 dev->ops->get_smbios_strings = mainboard_smbios_strings;
56
57 install_intel_vga_int15_handler(
58 GMA_INT15_ACTIVE_LFP_INT_LVDS,
59 GMA_INT15_PANEL_FIT_DEFAULT,
60 GMA_INT15_BOOT_DISPLAY_DEFAULT,
61 0);
62
63 if (!acpi_is_wakeup_s3())
64 lenovo_s230u_ec_init();
65 }
66
67 struct chip_operations mainboard_ops = {
68 .enable_dev = mainboard_enable,
69 };
70