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
|
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2015 Intel Corp.
*
* 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; either version 2 of the License, or
* (at your option) any later version.
*/
/*
* The sole purpose of this driver is to avoid BAR to be changed during
* resource allocation. Since configuration space is just 32 bytes it
* shouldn't cause any fragmentation.
*/
#include <console/uart.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include <soc/pci_ids.h>
#include <soc/pci_devs.h>
static void aplk_uart_read_resources(struct device *dev)
{
pci_dev_read_resources(dev);
if ((IS_ENABLED(CONFIG_SOC_UART_DEBUG) &&
dev->path.pci.devfn == _LPSS_PCI_DEVFN(UART,
CONFIG_UART_FOR_CONSOLE))) {
/* will override existing resource. */
fixed_mem_resource(dev, PCI_BASE_ADDRESS_0,
CONFIG_CONSOLE_UART_BASE_ADDRESS >> 10, 4, 0);
}
}
static struct device_operations uart_ops = {
.read_resources = aplk_uart_read_resources,
.set_resources = DEVICE_NOOP,
.enable_resources = DEVICE_NOOP,
.init = pci_dev_init,
.enable = DEVICE_NOOP
};
static const unsigned short uart_ids[] = {
PCI_DEVICE_ID_APOLLOLAKE_UART0, PCI_DEVICE_ID_APOLLOLAKE_UART1,
PCI_DEVICE_ID_APOLLOLAKE_UART2, PCI_DEVICE_ID_APOLLOLAKE_UART3,
0
};
static const struct pci_driver uart_driver __pci_driver = {
.ops = &uart_ops,
.vendor = PCI_VENDOR_ID_INTEL,
.devices = uart_ids
};
|
