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
|
/* SPDX-License-Identifier: GPL-2.0-only */
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ops.h>
#include <pc80/keyboard.h>
#include <cpu/x86/smm.h>
#include "q35.h"
static const unsigned char qemu_q35_irqs[] = {
10, 10, 11, 11,
10, 10, 11, 11,
};
static void qemu_nb_init(struct device *dev)
{
/* Map memory at 0xc0000 - 0xfffff */
int i;
uint8_t v = pci_read_config8(dev, D0F0_PAM(0));
v |= 0x30;
pci_write_config8(dev, D0F0_PAM(0), v);
pci_write_config8(dev, D0F0_PAM(1), 0x33);
pci_write_config8(dev, D0F0_PAM(2), 0x33);
pci_write_config8(dev, D0F0_PAM(3), 0x33);
pci_write_config8(dev, D0F0_PAM(4), 0x33);
pci_write_config8(dev, D0F0_PAM(5), 0x33);
pci_write_config8(dev, D0F0_PAM(6), 0x33);
/* This sneaked in here, because Qemu does not emulate a SuperIO chip. */
pc_keyboard_init(NO_AUX_DEVICE);
/* setup IRQ routing for pci slots */
for (i = 0; i < 25; i++) {
struct device *d = pcidev_on_root(i, 0);
if (d)
pci_assign_irqs(d, qemu_q35_irqs + (i % 4));
}
/* setup IRQ routing southbridge devices */
for (i = 25; i < 32; i++) {
struct device *d = pcidev_on_root(i, 0);
if (d)
pci_assign_irqs(d, qemu_q35_irqs);
}
}
static void qemu_nb_read_resources(struct device *dev)
{
size_t tseg_size;
uintptr_t tseg_base;
pci_dev_read_resources(dev);
mmconf_resource(dev, 2);
if (CONFIG(ARCH_RAMSTAGE_X86_64)) {
/* Reserve page tables in DRAM. FIXME: Remove once x86_64 page tables reside in CBMEM */
reserved_ram_resource(dev, 0, CONFIG_ARCH_X86_64_PGTBL_LOC / KiB,
(6 * 0x1000) / KiB);
}
smm_region(&tseg_base, &tseg_size);
reserved_ram_resource(dev, ESMRAMC, tseg_base / 1024, tseg_size / 1024);
}
static struct device_operations nb_operations = {
.read_resources = qemu_nb_read_resources,
.set_resources = pci_dev_set_resources,
.enable_resources = pci_dev_enable_resources,
.init = qemu_nb_init,
};
static const struct pci_driver nb_driver __pci_driver = {
.ops = &nb_operations,
.vendor = 0x8086,
.device = 0x29c0,
};
|
