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
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
|
/*
* This file is part of the flashrom project.
*
* Copyright (C) 2009,2010,2011 Carl-Daniel Hailfinger
*
* 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.
*
* 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 "flash.h"
#include "programmer.h"
/* Fallback map() for programmers which don't need special handling */
void *fallback_map(const char *descr, uintptr_t phys_addr, size_t len)
{
/* A result of NULL causes mapped addresses to be chip physical
* addresses, assuming only a single region is mapped (the entire flash
* space). Chips with a second region (like a register map) require a
* real memory mapping to distinguish the different ranges. Those chips
* are FWH/LPC, so the bus master provides a real mapping.
*/
return NULL;
}
/* No-op/fallback unmap() for programmers which don't need special handling */
void fallback_unmap(void *virt_addr, size_t len)
{
}
/* Little-endian fallback for drivers not supporting 16 bit accesses */
void fallback_chip_writew(const struct flashctx *flash, uint16_t val,
chipaddr addr)
{
chip_writeb(flash, val & 0xff, addr);
chip_writeb(flash, (val >> 8) & 0xff, addr + 1);
}
/* Little-endian fallback for drivers not supporting 16 bit accesses */
uint16_t fallback_chip_readw(const struct flashctx *flash, const chipaddr addr)
{
uint16_t val;
val = chip_readb(flash, addr);
val |= chip_readb(flash, addr + 1) << 8;
return val;
}
/* Little-endian fallback for drivers not supporting 32 bit accesses */
void fallback_chip_writel(const struct flashctx *flash, uint32_t val,
chipaddr addr)
{
chip_writew(flash, val & 0xffff, addr);
chip_writew(flash, (val >> 16) & 0xffff, addr + 2);
}
/* Little-endian fallback for drivers not supporting 32 bit accesses */
uint32_t fallback_chip_readl(const struct flashctx *flash, const chipaddr addr)
{
uint32_t val;
val = chip_readw(flash, addr);
val |= chip_readw(flash, addr + 2) << 16;
return val;
}
void fallback_chip_writen(const struct flashctx *flash, const uint8_t *buf, chipaddr addr, size_t len)
{
size_t i;
for (i = 0; i < len; i++)
chip_writeb(flash, buf[i], addr + i);
return;
}
void fallback_chip_readn(const struct flashctx *flash, uint8_t *buf,
chipaddr addr, size_t len)
{
size_t i;
for (i = 0; i < len; i++)
buf[i] = chip_readb(flash, addr + i);
return;
}
/* The limit of 4 is totally arbitrary. */
#define MASTERS_MAX 4
struct registered_master registered_masters[MASTERS_MAX];
int registered_master_count = 0;
/* This function copies the struct registered_master parameter. */
int register_master(const struct registered_master *mst)
{
if (registered_master_count >= MASTERS_MAX) {
msg_perr("Tried to register more than %i master "
"interfaces.\n", MASTERS_MAX);
return ERROR_FLASHROM_LIMIT;
}
registered_masters[registered_master_count] = *mst;
registered_master_count++;
return 0;
}
enum chipbustype get_buses_supported(void)
{
int i;
enum chipbustype ret = BUS_NONE;
for (i = 0; i < registered_master_count; i++)
ret |= registered_masters[i].buses_supported;
return ret;
}
|
