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
|
// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2013
* Afzal Mohammed <afzal.mohd.ma@gmail.com>
*
* Reference: dfu_mmc.c
* Copyright (C) 2012 Samsung Electronics
* author: Lukasz Majewski <l.majewski@samsung.com>
*/
#include <malloc.h>
#include <mapmem.h>
#include <errno.h>
#include <dfu.h>
#include <linux/printk.h>
static int dfu_transfer_medium_ram(enum dfu_op op, struct dfu_entity *dfu,
u64 offset, void *buf, long *len)
{
if (dfu->layout != DFU_RAM_ADDR) {
pr_err("unsupported layout: %s\n", dfu_get_layout(dfu->layout));
return -EINVAL;
}
if (offset > dfu->data.ram.size) {
pr_err("request exceeds allowed area\n");
return -EINVAL;
}
if (op == DFU_OP_WRITE)
memcpy(map_sysmem(dfu->data.ram.start + offset, 0), buf, *len);
else
memcpy(buf, map_sysmem(dfu->data.ram.start + offset, 0), *len);
return 0;
}
static int dfu_write_medium_ram(struct dfu_entity *dfu, u64 offset,
void *buf, long *len)
{
return dfu_transfer_medium_ram(DFU_OP_WRITE, dfu, offset, buf, len);
}
int dfu_get_medium_size_ram(struct dfu_entity *dfu, u64 *size)
{
*size = dfu->data.ram.size;
return 0;
}
static int dfu_read_medium_ram(struct dfu_entity *dfu, u64 offset,
void *buf, long *len)
{
return dfu_transfer_medium_ram(DFU_OP_READ, dfu, offset, buf, len);
}
int dfu_fill_entity_ram(struct dfu_entity *dfu, char *devstr, char **argv, int argc)
{
char *s;
if (argc != 3) {
pr_err("Invalid number of arguments.\n");
return -EINVAL;
}
dfu->dev_type = DFU_DEV_RAM;
if (strcmp(argv[0], "ram")) {
pr_err("unsupported device: %s\n", argv[0]);
return -ENODEV;
}
dfu->layout = DFU_RAM_ADDR;
dfu->data.ram.start = hextoul(argv[1], &s);
if (*s)
return -EINVAL;
dfu->data.ram.size = hextoul(argv[2], &s);
if (*s)
return -EINVAL;
dfu->write_medium = dfu_write_medium_ram;
dfu->get_medium_size = dfu_get_medium_size_ram;
dfu->read_medium = dfu_read_medium_ram;
dfu->inited = 0;
return 0;
}
|
