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
|
#include <common.h>
#include <driver.h>
#include <malloc.h>
#include <asm/arch/linux.h>
#include <init.h>
#include <errno.h>
#include <asm/arch/hostfile.h>
#include <xfuncs.h>
ssize_t hf_read(struct device_d *dev, void *buf, size_t count, ulong offset, ulong flags)
{
struct hf_platform_data *hf = dev->platform_data;
int fd = hf->fd;
if (linux_lseek(fd, offset) != offset)
return -EINVAL;
return linux_read(fd, buf, count);
}
ssize_t hf_write(struct device_d *dev, const void *buf, size_t count, ulong offset, ulong flags)
{
struct hf_platform_data *hf = dev->platform_data;
int fd = hf->fd;
if (linux_lseek(fd, offset) != offset)
return -EINVAL;
return linux_write(fd, buf, count);
}
static void hf_info(struct device_d *dev)
{
struct hf_platform_data *hf = dev->platform_data;
printf("file: %s\n", hf->filename);
}
static struct driver_d hf_drv = {
.name = "hostfile",
.probe = dummy_probe,
.read = hf_read,
.write = hf_write,
.info = hf_info,
.type = DEVICE_TYPE_BLOCK,
};
static int hf_init(void)
{
return register_driver(&hf_drv);
}
device_initcall(hf_init);
int u_boot_register_filedev(struct hf_platform_data *hf, char *name_template)
{
struct device_d *dev;
dev = xzalloc(sizeof(struct device_d));
dev->platform_data = hf;
hf = dev->platform_data;
strcpy(dev->name,"hostfile");
get_free_deviceid(dev->id, name_template);
dev->size = hf->size;
dev->map_base = hf->map_base;
dev->type = DEVICE_TYPE_BLOCK;
return register_device(dev);
}
|
