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review.coreboot.org / coreboot / 2751d2922f7c87a6acf901a0008ac131bf7245db / . / util / superiotool / amd.c
blob: 1656f0b3145d821868144ca0945e5d4f0bcf8be9 [file] [log] [blame]
Patrick Georgi7333a112020-05-08 20:48:04 +0200[diff] [blame]1/* SPDX-License-Identifier: GPL-2.0-or-later */
Rudolf Marek113c3492011-10-27 20:42:11 +0200[diff] [blame]2
3#include "superiotool.h"
4
5#define DEVICE_ID_REG 0x20
6#define DEVICE_REV_REG 0x21
7
8static const struct superio_registers reg_table[] = {
9 {0xb7, "SB7xx", {
10 {NOLDN, NULL,
11 {0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x28,0x29,0x2a,
12 0x2b,0x2c,0x2e, 0x2f, EOT},
13 {NANA,NANA,NANA,NANA,NANA,NANA,NANA,NANA,NANA,NANA,NANA,NANA,NANA,NANA,EOT}},
14 {0x3, "EC channel 0",
15 {0x30,0x60,0x61, EOT},
16 {NANA,NANA,NANA,EOT}},
17 {0x5, "Irda",
18 {0x30,0x60,0x61,0x70, EOT},
19 {NANA,NANA,NANA,NANA,EOT}},
20 {0x7, "Keyboard Controller",
21 {0x30, EOT},
22 {NANA,EOT}},
23 {0x9, "Mailbox",
24 {0x30,0x60,0x61, EOT},
25 {NANA,NANA,NANA,EOT}},
26 {EOT}}},
27 {0xb8, "SB8xx", {
28 {NOLDN, NULL,
29 {0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x28,0x29,0x2a,
30 0x2b,0x2c,0x2e, 0x2f, EOT},
31 {NANA,NANA,NANA,NANA,NANA,NANA,NANA,NANA,NANA,NANA,NANA,NANA,NANA,NANA,EOT}},
32 {0x3, "EC channel 0",
33 {0x30,0x60,0x61, EOT},
34 {NANA,NANA,NANA,EOT}},
35 {0x5, "Irda",
36 {0x30,0x60,0x61,0x70, EOT},
37 {NANA,NANA,NANA,NANA,EOT}},
38 {0x7, "Keyboard Controller",
39 {0x30, EOT},
40 {NANA,EOT}},
41 {0x9, "Mailbox",
42 {0x30,0x60,0x61, EOT},
43 {NANA,NANA,NANA,EOT}},
44 {EOT}}},
45 {EOT}
46};
47
48/* same as serverengines */
49static void enter_conf_mode_ec(uint16_t port)
50{
51 OUTB(0x5a, port);
52}
53
54static void exit_conf_mode_ec(uint16_t port)
55{
56 OUTB(0xa5, port);
57}
58
59uint16_t detect_ec(void)
60{
61 uint16_t ec_port;
62 struct pci_dev *dev;
63
64 dev = pci_dev_find(0x1002, 0x439d);
65
66 if (!dev) {
67 return 0;
68 }
69
70 /* is EC disabled ? */
71 if (!(pci_read_byte(dev, 0x40) & (1 << 7)))
72 return 0;
73
74 ec_port = pci_read_word(dev, 0xa4);
Stefan Reinauer5ff7c132011-10-31 12:56:45 -0700[diff] [blame]75
Rudolf Marek113c3492011-10-27 20:42:11 +0200[diff] [blame]76 if (!(ec_port & 0x1))
77 return 0;
78
79 ec_port &= ~0x1;
80
81 return ec_port;
82}
83
84void probe_idregs_amd(uint16_t port)
85{
86 uint8_t rev, devid;
87
88 probing_for("AMD EC", "", port);
89
90 if (!(port = detect_ec()))
91 return;
92
93 enter_conf_mode_ec(port);
94
95 devid = regval(port, DEVICE_ID_REG);
96 rev = regval(port, DEVICE_REV_REG);
97
98 if (superio_unknown(reg_table, devid)) {
99 if (verbose)
100 printf(NOTFOUND "id=0x%02x, rev=0x%02x\n", devid, rev);
101 exit_conf_mode_ec(port);
102 return;
103 }
104
105 printf("Found AMD EC %s (id=0x%02x, rev=0x%02x) at 0x%x\n",
106 get_superio_name(reg_table, devid), devid, rev, port);
107 chip_found = 1;
108
109 dump_superio("AMD EC", reg_table, port, devid, LDN_SEL);
110
111 exit_conf_mode_ec(port);
112}
113
114void print_amd_chips(void)
115{
116 print_vendor_chips("AMD EC", reg_table);
117}