summaryrefslogtreecommitdiffstats
path: root/flash.h
blob: 9566af99b046e863a22d6585486703045b453540 (plain)
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
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
/*
 * This file is part of the flashrom project.
 *
 * Copyright (C) 2000 Silicon Integrated System Corporation
 * Copyright (C) 2000 Ronald G. Minnich <rminnich@gmail.com>
 * Copyright (C) 2005-2009 coresystems GmbH
 * Copyright (C) 2006-2009 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
 */

#ifndef __FLASH_H__
#define __FLASH_H__ 1

#include <stdint.h>
#include <stddef.h>
#include "hwaccess.h"
#ifdef _WIN32
#include <windows.h>
#undef min
#undef max
#endif

#define ERROR_PTR ((void*)-1)

/* Error codes */
#define TIMEOUT_ERROR	-101

typedef unsigned long chipaddr;

int register_shutdown(void (*function) (void *data), void *data);
void *programmer_map_flash_region(const char *descr, unsigned long phys_addr,
				  size_t len);
void programmer_unmap_flash_region(void *virt_addr, size_t len);
void chip_writeb(uint8_t val, chipaddr addr);
void chip_writew(uint16_t val, chipaddr addr);
void chip_writel(uint32_t val, chipaddr addr);
void chip_writen(uint8_t *buf, chipaddr addr, size_t len);
uint8_t chip_readb(const chipaddr addr);
uint16_t chip_readw(const chipaddr addr);
uint32_t chip_readl(const chipaddr addr);
void chip_readn(uint8_t *buf, const chipaddr addr, size_t len);
void programmer_delay(int usecs);

#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))

enum chipbustype {
	CHIP_BUSTYPE_NONE	= 0,
	CHIP_BUSTYPE_PARALLEL	= 1 << 0,
	CHIP_BUSTYPE_LPC	= 1 << 1,
	CHIP_BUSTYPE_FWH	= 1 << 2,
	CHIP_BUSTYPE_SPI	= 1 << 3,
	CHIP_BUSTYPE_NONSPI	= CHIP_BUSTYPE_PARALLEL | CHIP_BUSTYPE_LPC | CHIP_BUSTYPE_FWH,
	CHIP_BUSTYPE_UNKNOWN	= CHIP_BUSTYPE_PARALLEL | CHIP_BUSTYPE_LPC | CHIP_BUSTYPE_FWH | CHIP_BUSTYPE_SPI,
};

/*
 * How many different contiguous runs of erase blocks with one size each do
 * we have for a given erase function?
 */
#define NUM_ERASEREGIONS 5

/*
 * How many different erase functions do we have per chip?
 * Atmel AT25FS010 has 6 different functions.
 */
#define NUM_ERASEFUNCTIONS 6

#define FEATURE_REGISTERMAP	(1 << 0)
#define FEATURE_BYTEWRITES	(1 << 1)
#define FEATURE_LONG_RESET	(0 << 4)
#define FEATURE_SHORT_RESET	(1 << 4)
#define FEATURE_EITHER_RESET	FEATURE_LONG_RESET
#define FEATURE_ADDR_FULL	(0 << 2)
#define FEATURE_ADDR_MASK	(3 << 2)
#define FEATURE_ADDR_2AA	(1 << 2)
#define FEATURE_ADDR_AAA	(2 << 2)
#define FEATURE_ADDR_SHIFTED	(1 << 5)
#define FEATURE_WRSR_EWSR	(1 << 6)
#define FEATURE_WRSR_WREN	(1 << 7)
#define FEATURE_WRSR_EITHER	(FEATURE_WRSR_EWSR | FEATURE_WRSR_WREN)

struct flashchip {
	const char *vendor;
	const char *name;

	enum chipbustype bustype;

	/*
	 * With 32bit manufacture_id and model_id we can cover IDs up to
	 * (including) the 4th bank of JEDEC JEP106W Standard Manufacturer's
	 * Identification code.
	 */
	uint32_t manufacture_id;
	uint32_t model_id;

	int total_size;
	int page_size;
	int feature_bits;

	/*
	 * Indicate if flashrom has been tested with this flash chip and if
	 * everything worked correctly.
	 */
	uint32_t tested;

	int (*probe) (struct flashchip *flash);

	/* Delay after "enter/exit ID mode" commands in microseconds. */
	int probe_timing;

	/*
	 * Erase blocks and associated erase function. Any chip erase function
	 * is stored as chip-sized virtual block together with said function.
	 */
	struct block_eraser {
		struct eraseblock{
			unsigned int size; /* Eraseblock size */
			unsigned int count; /* Number of contiguous blocks with that size */
		} eraseblocks[NUM_ERASEREGIONS];
		int (*block_erase) (struct flashchip *flash, unsigned int blockaddr, unsigned int blocklen);
	} block_erasers[NUM_ERASEFUNCTIONS];

	int (*printlock) (struct flashchip *flash);
	int (*unlock) (struct flashchip *flash);
	int (*write) (struct flashchip *flash, uint8_t *buf);
	int (*read) (struct flashchip *flash, uint8_t *buf, int start, int len);

	/* Some flash devices have an additional register space. */
	chipaddr virtual_memory;
	chipaddr virtual_registers;
};

#define TEST_UNTESTED	0

#define TEST_OK_PROBE	(1 << 0)
#define TEST_OK_READ	(1 << 1)
#define TEST_OK_ERASE	(1 << 2)
#define TEST_OK_WRITE	(1 << 3)
#define TEST_OK_PR	(TEST_OK_PROBE | TEST_OK_READ)
#define TEST_OK_PRE	(TEST_OK_PROBE | TEST_OK_READ | TEST_OK_ERASE)
#define TEST_OK_PRW	(TEST_OK_PROBE | TEST_OK_READ | TEST_OK_WRITE)
#define TEST_OK_PREW	(TEST_OK_PROBE | TEST_OK_READ | TEST_OK_ERASE | TEST_OK_WRITE)
#define TEST_OK_MASK	0x0f

#define TEST_BAD_PROBE	(1 << 4)
#define TEST_BAD_READ	(1 << 5)
#define TEST_BAD_ERASE	(1 << 6)
#define TEST_BAD_WRITE	(1 << 7)
#define TEST_BAD_PREW	(TEST_BAD_PROBE | TEST_BAD_READ | TEST_BAD_ERASE | TEST_BAD_WRITE)
#define TEST_BAD_MASK	0xf0

/* Timing used in probe routines. ZERO is -2 to differentiate between an unset
 * field and zero delay.
 * 
 * SPI devices will always have zero delay and ignore this field.
 */
#define TIMING_FIXME	-1
/* this is intentionally same value as fixme */
#define TIMING_IGNORED	-1
#define TIMING_ZERO	-2

extern struct flashchip flashchips[];

/* print.c */
char *flashbuses_to_text(enum chipbustype bustype);
void print_supported(void);
void print_supported_wiki(void);

/* flashrom.c */
enum write_granularity {
	write_gran_1bit,
	write_gran_1byte,
	write_gran_256bytes,
};
extern enum chipbustype buses_supported;
extern int verbose;
extern const char * const flashrom_version;
extern char *chip_to_probe;
void map_flash_registers(struct flashchip *flash);
int read_memmapped(struct flashchip *flash, uint8_t *buf, int start, int len);
int erase_flash(struct flashchip *flash);
struct flashchip *probe_flash(struct flashchip *first_flash, int force);
int read_flash_to_file(struct flashchip *flash, char *filename);
int min(int a, int b);
int max(int a, int b);
char *extract_param(char **haystack, char *needle, char *delim);
int check_erased_range(struct flashchip *flash, int start, int len);
int verify_range(struct flashchip *flash, uint8_t *cmpbuf, int start, int len, char *message);
int need_erase(uint8_t *have, uint8_t *want, int len, enum write_granularity gran);
char *strcat_realloc(char *dest, const char *src);
void print_version(void);
void print_banner(void);
void list_programmers_linebreak(int startcol, int cols, int paren);
int selfcheck(void);
int doit(struct flashchip *flash, int force, char *filename, int read_it, int write_it, int erase_it, int verify_it);

#define OK 0
#define NT 1    /* Not tested */

/* Something happened that shouldn't happen, but we can go on */
#define ERROR_NONFATAL 0x100

/* cli_output.c */
/* Let gcc and clang check for correct printf-style format strings. */
int print(int type, const char *fmt, ...) __attribute__((format(printf, 2, 3)));
#define MSG_ERROR	0
#define MSG_INFO	1
#define MSG_DEBUG	2
#define MSG_BARF	3
#define msg_gerr(...)	print(MSG_ERROR, __VA_ARGS__)	/* general errors */
#define msg_perr(...)	print(MSG_ERROR, __VA_ARGS__)	/* programmer errors */
#define msg_cerr(...)	print(MSG_ERROR, __VA_ARGS__)	/* chip errors */
#define msg_ginfo(...)	print(MSG_INFO, __VA_ARGS__)	/* general info */
#define msg_pinfo(...)	print(MSG_INFO, __VA_ARGS__)	/* programmer info */
#define msg_cinfo(...)	print(MSG_INFO, __VA_ARGS__)	/* chip info */
#define msg_gdbg(...)	print(MSG_DEBUG, __VA_ARGS__)	/* general debug */
#define msg_pdbg(...)	print(MSG_DEBUG, __VA_ARGS__)	/* programmer debug */
#define msg_cdbg(...)	print(MSG_DEBUG, __VA_ARGS__)	/* chip debug */
#define msg_gspew(...)	print(MSG_BARF, __VA_ARGS__)	/* general debug barf  */
#define msg_pspew(...)	print(MSG_BARF, __VA_ARGS__)	/* programmer debug barf  */
#define msg_cspew(...)	print(MSG_BARF, __VA_ARGS__)	/* chip debug barf  */

/* cli_classic.c */
int cli_classic(int argc, char *argv[]);

/* layout.c */
int read_romlayout(char *name);
int find_romentry(char *name);
int handle_romentries(uint8_t *buffer, struct flashchip *flash);

/* spi.c */
struct spi_command {
	unsigned int writecnt;
	unsigned int readcnt;
	const unsigned char *writearr;
	unsigned char *readarr;
};
int spi_send_command(unsigned int writecnt, unsigned int readcnt,
		const unsigned char *writearr, unsigned char *readarr);
int spi_send_multicommand(struct spi_command *cmds);
uint32_t spi_get_valid_read_addr(void);

#endif				/* !__FLASH_H__ */