1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
|
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2012 Google Inc.
* Copyright (C) 2016 Damien Zammit <damien@zamaudio.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
/*
* This driver resets the 10ec:8168 NIC then tries to read
* "macaddress" string XX:XX:XX:XX:XX:XX from CBFS.
* If no MAC is found, it programs a default MAC address in the device
* so that if the EEPROM/efuse is unconfigured it still has a default MAC.
*/
#include <cbfs.h>
#include <string.h>
#include <arch/io.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ops.h>
#include <device/pci_def.h>
#include <delay.h>
#include <console/console.h>
#define NIC_TIMEOUT 1000
#define CMD_REG 0x37
#define CMD_REG_RESET 0x10
#define CFG_9346 0x50
#define CFG_9346_LOCK 0x00
#define CFG_9346_UNLOCK 0xc0
static u8 get_hex_digit(const u8 c)
{
u8 ret = 0;
ret = c - '0';
if (ret > 0x09) {
ret = c - 'A' + 0x0a;
if (ret > 0x0f)
ret = c - 'a' + 0x0a;
}
if (ret > 0x0f) {
printk(BIOS_DEBUG, "Error: Invalid hex digit found: "
"%c - 0x%02x\n", (char)c, c);
ret = 0;
}
return ret;
}
static void get_mac_address(u8 *macaddr, const u8 *strbuf)
{
size_t offset = 0;
int i;
if ( (strbuf[2] != ':') || (strbuf[5] != ':') ||
(strbuf[8] != ':') || (strbuf[11] != ':') ||
(strbuf[14] != ':') ) {
printk(BIOS_ERR, "r8168: ignore invalid MAC address in cbfs\n");
return;
}
for (i = 0; i < 6; i++) {
macaddr[i] = 0;
macaddr[i] |= get_hex_digit(strbuf[offset]) << 4;
macaddr[i] |= get_hex_digit(strbuf[offset + 1]);
offset += 3;
}
}
#define MACLEN 17
static void program_mac_address(struct device *dev, u16 io_base)
{
struct cbfsf fh;
uint32_t matchraw = CBFS_TYPE_RAW;
u8 macstrbuf[MACLEN] = { 0 };
int i = 0;
u8 mac[6] = { 0x00, 0xe0, 0x4c, 0x00, 0xc0, 0xb0 };
if (!cbfs_boot_locate(&fh, "rt8168-macaddress", &matchraw)) {
if (rdev_readat(&fh.data, macstrbuf, 0, MACLEN) == MACLEN)
get_mac_address(mac, macstrbuf);
else
printk(BIOS_ERR, "r8168: Error reading MAC from CBFS\n");
} else {
printk(BIOS_ERR, "r8168: 'rt8168-macaddress' not found in CBFS,"
" using default 00:e0:4c:00:c0:b0\n");
}
/* Reset NIC */
printk(BIOS_DEBUG, "r8168: Resetting NIC...");
outb(CMD_REG_RESET, io_base + CMD_REG);
/* Poll for reset, with 1sec timeout */
while (i < NIC_TIMEOUT && (inb(io_base + CMD_REG) & CMD_REG_RESET)) {
udelay(1000);
if (++i >= NIC_TIMEOUT)
printk(BIOS_DEBUG, "timeout waiting for nic to reset\n");
}
if (i < NIC_TIMEOUT)
printk(BIOS_DEBUG, "done\n");
printk(BIOS_DEBUG, "r8168: Programming MAC Address...");
/* Disable register protection */
outb(CFG_9346_UNLOCK, io_base + CFG_9346);
/* Set MAC address: only 4-byte write accesses allowed */
outl(mac[4] | mac[5] << 8, io_base + 4);
inl(io_base + 4);
outl(mac[0] | mac[1] << 8 | mac[2] << 16 | mac[3] << 24,
io_base);
inl(io_base);
/* Lock config regs */
outb(CFG_9346_LOCK, io_base + CFG_9346);
printk(BIOS_DEBUG, "done\n");
}
static void r8168_init(struct device *dev)
{
/* Get the resource of the NIC mmio */
struct resource *nic_res = find_resource(dev, PCI_BASE_ADDRESS_0);
u16 io_base = (u16)nic_res->base;
/* Enable but do not set bus master */
pci_write_config16(dev, PCI_COMMAND,
PCI_COMMAND_MEMORY | PCI_COMMAND_IO);
/* Program MAC address based on CBFS "macaddress" containing
* a string AA:BB:CC:DD:EE:FF */
if (io_base)
program_mac_address(dev, io_base);
else
printk(BIOS_DEBUG, "r8168: Error cant find MMIO resource\n");
}
static struct device_operations r8168_ops = {
.read_resources = pci_dev_read_resources,
.set_resources = pci_dev_set_resources,
.enable_resources = pci_dev_enable_resources,
.init = r8168_init,
.scan_bus = 0,
};
static const struct pci_driver r8168_driver __pci_driver = {
.ops = &r8168_ops,
.vendor = 0x10ec,
.device = 0x8168,
};
|
