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
|
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2013 Sage Electronic Engineering, LLC
*
* 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.
*/
#include <device/device.h>
#include <delay.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include <device/pci_ops.h>
#include <arch/io.h>
#include <soc/hudson.h>
static void sd_init(struct device *dev)
{
u32 stepping;
stepping = pci_read_config32(dev_find_slot(0, PCI_DEVFN(0x18, 3)),
0xfc);
struct soc_amd_stoneyridge_config *sd_chip =
(struct soc_amd_stoneyridge_config *)(dev->chip_info);
if (sd_chip->sd_mode == 3) { /* SD 3.0 mode */
pci_write_config32(dev, 0xa4, 0x31fec8b2);
pci_write_config32(dev, 0xa8, 0x00002503);
pci_write_config32(dev, 0xb0, 0x02180c19);
pci_write_config32(dev, 0xd0, 0x0000078b);
} else { /* SD 2.0 mode */
if ((stepping & 0x0000000f) == 0) { /* Stepping A0 */
pci_write_config32(dev, 0xa4, 0x31de32b2);
pci_write_config32(dev, 0xb0, 0x01180c19);
pci_write_config32(dev, 0xd0, 0x0000058b);
} else { /* Stepping >= A1 */
pci_write_config32(dev, 0xa4, 0x31fe3fb2);
pci_write_config32(dev, 0xb0, 0x01180c19);
pci_write_config32(dev, 0xd0, 0x0000078b);
}
}
}
static struct device_operations sd_ops = {
.read_resources = pci_dev_read_resources,
.set_resources = pci_dev_set_resources,
.enable_resources = pci_dev_enable_resources,
.init = sd_init,
.scan_bus = 0,
};
static const struct pci_driver sd_driver __pci_driver = {
.ops = &sd_ops,
.vendor = PCI_VENDOR_ID_AMD,
.device = PCI_DEVICE_ID_AMD_YANGTZE_SD,
};
|
