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qapi/qdev: Tidy up device_add documentation
[qemu/armbru.git] / hw / block / m25p80.c
blobdc5ffbc4ff52b4b037e60b00b5e9266cd25f34fe
1 /*
2 * ST M25P80 emulator. Emulate all SPI flash devices based on the m25p80 command
3 * set. Known devices table current as of Jun/2012 and taken from linux.
4 * See drivers/mtd/devices/m25p80.c.
5 *
6 * Copyright (C) 2011 Edgar E. Iglesias <edgar.iglesias@gmail.com>
7 * Copyright (C) 2012 Peter A. G. Crosthwaite <peter.crosthwaite@petalogix.com>
8 * Copyright (C) 2012 PetaLogix
9 *
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License as
12 * published by the Free Software Foundation; either version 2 or
13 * (at your option) a later version of the License.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License along
21 * with this program; if not, see <http://www.gnu.org/licenses/>.
22 */
23
24 #include "qemu/osdep.h"
25 #include "qemu/units.h"
26 #include "sysemu/block-backend.h"
27 #include "hw/block/block.h"
28 #include "hw/qdev-properties.h"
29 #include "hw/qdev-properties-system.h"
30 #include "hw/ssi/ssi.h"
31 #include "migration/vmstate.h"
32 #include "qemu/bitops.h"
33 #include "qemu/log.h"
34 #include "qemu/module.h"
35 #include "qemu/error-report.h"
36 #include "qapi/error.h"
37 #include "trace.h"
38 #include "qom/object.h"
39 #include "m25p80_sfdp.h"
40
41 /* 16 MiB max in 3 byte address mode */
42 #define MAX_3BYTES_SIZE 0x1000000
43 #define SPI_NOR_MAX_ID_LEN 6
44
45 /* Fields for FlashPartInfo->flags */
46 enum spi_flash_option_flags {
47 ER_4K = BIT(0),
48 ER_32K = BIT(1),
49 EEPROM = BIT(2),
50 HAS_SR_TB = BIT(3),
51 HAS_SR_BP3_BIT6 = BIT(4),
52 };
53
54 typedef struct FlashPartInfo {
55 const char *part_name;
56 /*
57 * This array stores the ID bytes.
58 * The first three bytes are the JEDIC ID.
59 * JEDEC ID zero means "no ID" (mostly older chips).
60 */
61 uint8_t id[SPI_NOR_MAX_ID_LEN];
62 uint8_t id_len;
63 /* there is confusion between manufacturers as to what a sector is. In this
64 * device model, a "sector" is the size that is erased by the ERASE_SECTOR
65 * command (opcode 0xd8).
66 */
67 uint32_t sector_size;
68 uint32_t n_sectors;
69 uint32_t page_size;
70 uint16_t flags;
71 /*
72 * Big sized spi nor are often stacked devices, thus sometime
73 * replace chip erase with die erase.
74 * This field inform how many die is in the chip.
75 */
76 uint8_t die_cnt;
77 uint8_t (*sfdp_read)(uint32_t sfdp_addr);
78 } FlashPartInfo;
79
80 /* adapted from linux */
81 /* Used when the "_ext_id" is two bytes at most */
82 #define INFO(_part_name, _jedec_id, _ext_id, _sector_size, _n_sectors, _flags)\
83 .part_name = _part_name,\
84 .id = {\
85 ((_jedec_id) >> 16) & 0xff,\
86 ((_jedec_id) >> 8) & 0xff,\
87 (_jedec_id) & 0xff,\
88 ((_ext_id) >> 8) & 0xff,\
89 (_ext_id) & 0xff,\
90 },\
91 .id_len = (!(_jedec_id) ? 0 : (3 + ((_ext_id) ? 2 : 0))),\
92 .sector_size = (_sector_size),\
93 .n_sectors = (_n_sectors),\
94 .page_size = 256,\
95 .flags = (_flags),\
96 .die_cnt = 0
97
98 #define INFO6(_part_name, _jedec_id, _ext_id, _sector_size, _n_sectors, _flags)\
99 .part_name = _part_name,\
100 .id = {\
101 ((_jedec_id) >> 16) & 0xff,\
102 ((_jedec_id) >> 8) & 0xff,\
103 (_jedec_id) & 0xff,\
104 ((_ext_id) >> 16) & 0xff,\
105 ((_ext_id) >> 8) & 0xff,\
106 (_ext_id) & 0xff,\
107 },\
108 .id_len = 6,\
109 .sector_size = (_sector_size),\
110 .n_sectors = (_n_sectors),\
111 .page_size = 256,\
112 .flags = (_flags),\
113 .die_cnt = 0
114
115 #define INFO_STACKED(_part_name, _jedec_id, _ext_id, _sector_size, _n_sectors,\
116 _flags, _die_cnt)\
117 .part_name = _part_name,\
118 .id = {\
119 ((_jedec_id) >> 16) & 0xff,\
120 ((_jedec_id) >> 8) & 0xff,\
121 (_jedec_id) & 0xff,\
122 ((_ext_id) >> 8) & 0xff,\
123 (_ext_id) & 0xff,\
124 },\
125 .id_len = (!(_jedec_id) ? 0 : (3 + ((_ext_id) ? 2 : 0))),\
126 .sector_size = (_sector_size),\
127 .n_sectors = (_n_sectors),\
128 .page_size = 256,\
129 .flags = (_flags),\
130 .die_cnt = _die_cnt
131
132 #define JEDEC_NUMONYX 0x20
133 #define JEDEC_WINBOND 0xEF
134 #define JEDEC_SPANSION 0x01
135
136 /* Numonyx (Micron) Configuration register macros */
137 #define VCFG_DUMMY 0x1
138 #define VCFG_WRAP_SEQUENTIAL 0x2
139 #define NVCFG_XIP_MODE_DISABLED (7 << 9)
140 #define NVCFG_XIP_MODE_MASK (7 << 9)
141 #define VCFG_XIP_MODE_DISABLED (1 << 3)
142 #define CFG_DUMMY_CLK_LEN 4
143 #define NVCFG_DUMMY_CLK_POS 12
144 #define VCFG_DUMMY_CLK_POS 4
145 #define EVCFG_OUT_DRIVER_STRENGTH_DEF 7
146 #define EVCFG_VPP_ACCELERATOR (1 << 3)
147 #define EVCFG_RESET_HOLD_ENABLED (1 << 4)
148 #define NVCFG_DUAL_IO_MASK (1 << 2)
149 #define EVCFG_DUAL_IO_DISABLED (1 << 6)
150 #define NVCFG_QUAD_IO_MASK (1 << 3)
151 #define EVCFG_QUAD_IO_DISABLED (1 << 7)
152 #define NVCFG_4BYTE_ADDR_MASK (1 << 0)
153 #define NVCFG_LOWER_SEGMENT_MASK (1 << 1)
154
155 /* Numonyx (Micron) Flag Status Register macros */
156 #define FSR_4BYTE_ADDR_MODE_ENABLED 0x1
157 #define FSR_FLASH_READY (1 << 7)
158
159 /* Spansion configuration registers macros. */
160 #define SPANSION_QUAD_CFG_POS 0
161 #define SPANSION_QUAD_CFG_LEN 1
162 #define SPANSION_DUMMY_CLK_POS 0
163 #define SPANSION_DUMMY_CLK_LEN 4
164 #define SPANSION_ADDR_LEN_POS 7
165 #define SPANSION_ADDR_LEN_LEN 1
166
167 /*
168 * Spansion read mode command length in bytes,
169 * the mode is currently not supported.
170 */
171
172 #define SPANSION_CONTINUOUS_READ_MODE_CMD_LEN 1
173 #define WINBOND_CONTINUOUS_READ_MODE_CMD_LEN 1
174
175 static const FlashPartInfo known_devices[] = {
176 /* Atmel -- some are (confusingly) marketed as "DataFlash" */
177 { INFO("at25fs010", 0x1f6601, 0, 32 << 10, 4, ER_4K) },
178 { INFO("at25fs040", 0x1f6604, 0, 64 << 10, 8, ER_4K) },
179
180 { INFO("at25df041a", 0x1f4401, 0, 64 << 10, 8, ER_4K) },
181 { INFO("at25df321a", 0x1f4701, 0, 64 << 10, 64, ER_4K) },
182 { INFO("at25df641", 0x1f4800, 0, 64 << 10, 128, ER_4K) },
183
184 { INFO("at26f004", 0x1f0400, 0, 64 << 10, 8, ER_4K) },
185 { INFO("at26df081a", 0x1f4501, 0, 64 << 10, 16, ER_4K) },
186 { INFO("at26df161a", 0x1f4601, 0, 64 << 10, 32, ER_4K) },
187 { INFO("at26df321", 0x1f4700, 0, 64 << 10, 64, ER_4K) },
188
189 { INFO("at45db081d", 0x1f2500, 0, 64 << 10, 16, ER_4K) },
190
191 /* Atmel EEPROMS - it is assumed, that don't care bit in command
192 * is set to 0. Block protection is not supported.
193 */
194 { INFO("at25128a-nonjedec", 0x0, 0, 1, 131072, EEPROM) },
195 { INFO("at25256a-nonjedec", 0x0, 0, 1, 262144, EEPROM) },
196
197 /* EON -- en25xxx */
198 { INFO("en25f32", 0x1c3116, 0, 64 << 10, 64, ER_4K) },
199 { INFO("en25p32", 0x1c2016, 0, 64 << 10, 64, 0) },
200 { INFO("en25q32b", 0x1c3016, 0, 64 << 10, 64, 0) },
201 { INFO("en25p64", 0x1c2017, 0, 64 << 10, 128, 0) },
202 { INFO("en25q64", 0x1c3017, 0, 64 << 10, 128, ER_4K) },
203
204 /* GigaDevice */
205 { INFO("gd25q32", 0xc84016, 0, 64 << 10, 64, ER_4K) },
206 { INFO("gd25q64", 0xc84017, 0, 64 << 10, 128, ER_4K) },
207
208 /* Intel/Numonyx -- xxxs33b */
209 { INFO("160s33b", 0x898911, 0, 64 << 10, 32, 0) },
210 { INFO("320s33b", 0x898912, 0, 64 << 10, 64, 0) },
211 { INFO("640s33b", 0x898913, 0, 64 << 10, 128, 0) },
212 { INFO("n25q064", 0x20ba17, 0, 64 << 10, 128, 0) },
213
214 /* ISSI */
215 { INFO("is25lq040b", 0x9d4013, 0, 64 << 10, 8, ER_4K) },
216 { INFO("is25lp080d", 0x9d6014, 0, 64 << 10, 16, ER_4K) },
217 { INFO("is25lp016d", 0x9d6015, 0, 64 << 10, 32, ER_4K) },
218 { INFO("is25lp032", 0x9d6016, 0, 64 << 10, 64, ER_4K) },
219 { INFO("is25lp064", 0x9d6017, 0, 64 << 10, 128, ER_4K) },
220 { INFO("is25lp128", 0x9d6018, 0, 64 << 10, 256, ER_4K) },
221 { INFO("is25lp256", 0x9d6019, 0, 64 << 10, 512, ER_4K) },
222 { INFO("is25wp032", 0x9d7016, 0, 64 << 10, 64, ER_4K) },
223 { INFO("is25wp064", 0x9d7017, 0, 64 << 10, 128, ER_4K) },
224 { INFO("is25wp128", 0x9d7018, 0, 64 << 10, 256, ER_4K) },
225 { INFO("is25wp256", 0x9d7019, 0, 64 << 10, 512, ER_4K),
226 .sfdp_read = m25p80_sfdp_is25wp256 },
227
228 /* Macronix */
229 { INFO("mx25l2005a", 0xc22012, 0, 64 << 10, 4, ER_4K) },
230 { INFO("mx25l4005a", 0xc22013, 0, 64 << 10, 8, ER_4K) },
231 { INFO("mx25l8005", 0xc22014, 0, 64 << 10, 16, 0) },
232 { INFO("mx25l1606e", 0xc22015, 0, 64 << 10, 32, ER_4K) },
233 { INFO("mx25l3205d", 0xc22016, 0, 64 << 10, 64, 0) },
234 { INFO("mx25l6405d", 0xc22017, 0, 64 << 10, 128, 0) },
235 { INFO("mx25l12805d", 0xc22018, 0, 64 << 10, 256, 0) },
236 { INFO("mx25l12855e", 0xc22618, 0, 64 << 10, 256, 0) },
237 { INFO6("mx25l25635e", 0xc22019, 0xc22019, 64 << 10, 512,
238 ER_4K | ER_32K), .sfdp_read = m25p80_sfdp_mx25l25635e },
239 { INFO6("mx25l25635f", 0xc22019, 0xc22019, 64 << 10, 512,
240 ER_4K | ER_32K), .sfdp_read = m25p80_sfdp_mx25l25635f },
241 { INFO("mx25l25655e", 0xc22619, 0, 64 << 10, 512, 0) },
242 { INFO("mx66l51235f", 0xc2201a, 0, 64 << 10, 1024, ER_4K | ER_32K) },
243 { INFO("mx66u51235f", 0xc2253a, 0, 64 << 10, 1024, ER_4K | ER_32K) },
244 { INFO("mx66u1g45g", 0xc2253b, 0, 64 << 10, 2048, ER_4K | ER_32K) },
245 { INFO("mx66l1g45g", 0xc2201b, 0, 64 << 10, 2048, ER_4K | ER_32K),
246 .sfdp_read = m25p80_sfdp_mx66l1g45g },
247
248 /* Micron */
249 { INFO("n25q032a11", 0x20bb16, 0, 64 << 10, 64, ER_4K) },
250 { INFO("n25q032a13", 0x20ba16, 0, 64 << 10, 64, ER_4K) },
251 { INFO("n25q064a11", 0x20bb17, 0, 64 << 10, 128, ER_4K) },
252 { INFO("n25q064a13", 0x20ba17, 0, 64 << 10, 128, ER_4K) },
253 { INFO("n25q128a11", 0x20bb18, 0, 64 << 10, 256, ER_4K) },
254 { INFO("n25q128a13", 0x20ba18, 0, 64 << 10, 256, ER_4K) },
255 { INFO("n25q256a11", 0x20bb19, 0, 64 << 10, 512, ER_4K) },
256 { INFO("n25q256a13", 0x20ba19, 0, 64 << 10, 512, ER_4K),
257 .sfdp_read = m25p80_sfdp_n25q256a },
258 { INFO("n25q512a11", 0x20bb20, 0, 64 << 10, 1024, ER_4K) },
259 { INFO("n25q512a13", 0x20ba20, 0, 64 << 10, 1024, ER_4K) },
260 { INFO("n25q128", 0x20ba18, 0, 64 << 10, 256, 0) },
261 { INFO("n25q256a", 0x20ba19, 0, 64 << 10, 512,
262 ER_4K | HAS_SR_BP3_BIT6 | HAS_SR_TB),
263 .sfdp_read = m25p80_sfdp_n25q256a },
264 { INFO("n25q512a", 0x20ba20, 0, 64 << 10, 1024, ER_4K) },
265 { INFO("n25q512ax3", 0x20ba20, 0x1000, 64 << 10, 1024, ER_4K) },
266 { INFO("mt25ql512ab", 0x20ba20, 0x1044, 64 << 10, 1024, ER_4K | ER_32K) },
267 { INFO_STACKED("mt35xu01g", 0x2c5b1b, 0x104100, 128 << 10, 1024,
268 ER_4K | ER_32K, 2) },
269 { INFO_STACKED("n25q00", 0x20ba21, 0x1000, 64 << 10, 2048, ER_4K, 4) },
270 { INFO_STACKED("n25q00a", 0x20bb21, 0x1000, 64 << 10, 2048, ER_4K, 4) },
271 { INFO_STACKED("mt25ql01g", 0x20ba21, 0x1040, 64 << 10, 2048, ER_4K, 2) },
272 { INFO_STACKED("mt25qu01g", 0x20bb21, 0x1040, 64 << 10, 2048, ER_4K, 2) },
273 { INFO_STACKED("mt25ql02g", 0x20ba22, 0x1040, 64 << 10, 4096, ER_4K | ER_32K, 2) },
274 { INFO_STACKED("mt25qu02g", 0x20bb22, 0x1040, 64 << 10, 4096, ER_4K | ER_32K, 2) },
275
276 /* Spansion -- single (large) sector size only, at least
277 * for the chips listed here (without boot sectors).
278 */
279 { INFO("s25sl032p", 0x010215, 0x4d00, 64 << 10, 64, ER_4K) },
280 { INFO("s25sl064p", 0x010216, 0x4d00, 64 << 10, 128, ER_4K) },
281 { INFO("s25fl256s0", 0x010219, 0x4d00, 256 << 10, 128, 0) },
282 { INFO("s25fl256s1", 0x010219, 0x4d01, 64 << 10, 512, 0) },
283 { INFO6("s25fl512s", 0x010220, 0x4d0080, 256 << 10, 256, 0) },
284 { INFO6("s70fl01gs", 0x010221, 0x4d0080, 256 << 10, 512, 0) },
285 { INFO("s25sl12800", 0x012018, 0x0300, 256 << 10, 64, 0) },
286 { INFO("s25sl12801", 0x012018, 0x0301, 64 << 10, 256, 0) },
287 { INFO("s25fl129p0", 0x012018, 0x4d00, 256 << 10, 64, 0) },
288 { INFO("s25fl129p1", 0x012018, 0x4d01, 64 << 10, 256, 0) },
289 { INFO("s25sl004a", 0x010212, 0, 64 << 10, 8, 0) },
290 { INFO("s25sl008a", 0x010213, 0, 64 << 10, 16, 0) },
291 { INFO("s25sl016a", 0x010214, 0, 64 << 10, 32, 0) },
292 { INFO("s25sl032a", 0x010215, 0, 64 << 10, 64, 0) },
293 { INFO("s25sl064a", 0x010216, 0, 64 << 10, 128, 0) },
294 { INFO("s25fl016k", 0xef4015, 0, 64 << 10, 32, ER_4K | ER_32K) },
295 { INFO("s25fl064k", 0xef4017, 0, 64 << 10, 128, ER_4K | ER_32K) },
296
297 /* Spansion -- boot sectors support */
298 { INFO6("s25fs512s", 0x010220, 0x4d0081, 256 << 10, 256, 0) },
299 { INFO6("s70fs01gs", 0x010221, 0x4d0081, 256 << 10, 512, 0) },
300
301 /* SST -- large erase sizes are "overlays", "sectors" are 4<< 10 */
302 { INFO("sst25vf040b", 0xbf258d, 0, 64 << 10, 8, ER_4K) },
303 { INFO("sst25vf080b", 0xbf258e, 0, 64 << 10, 16, ER_4K) },
304 { INFO("sst25vf016b", 0xbf2541, 0, 64 << 10, 32, ER_4K) },
305 { INFO("sst25vf032b", 0xbf254a, 0, 64 << 10, 64, ER_4K) },
306 { INFO("sst25wf512", 0xbf2501, 0, 64 << 10, 1, ER_4K) },
307 { INFO("sst25wf010", 0xbf2502, 0, 64 << 10, 2, ER_4K) },
308 { INFO("sst25wf020", 0xbf2503, 0, 64 << 10, 4, ER_4K) },
309 { INFO("sst25wf040", 0xbf2504, 0, 64 << 10, 8, ER_4K) },
310 { INFO("sst25wf080", 0xbf2505, 0, 64 << 10, 16, ER_4K) },
311
312 /* ST Microelectronics -- newer production may have feature updates */
313 { INFO("m25p05", 0x202010, 0, 32 << 10, 2, 0) },
314 { INFO("m25p10", 0x202011, 0, 32 << 10, 4, 0) },
315 { INFO("m25p20", 0x202012, 0, 64 << 10, 4, 0) },
316 { INFO("m25p40", 0x202013, 0, 64 << 10, 8, 0) },
317 { INFO("m25p80", 0x202014, 0, 64 << 10, 16, 0) },
318 { INFO("m25p16", 0x202015, 0, 64 << 10, 32, 0) },
319 { INFO("m25p32", 0x202016, 0, 64 << 10, 64, 0) },
320 { INFO("m25p64", 0x202017, 0, 64 << 10, 128, 0) },
321 { INFO("m25p128", 0x202018, 0, 256 << 10, 64, 0) },
322 { INFO("n25q032", 0x20ba16, 0, 64 << 10, 64, 0) },
323
324 { INFO("m45pe10", 0x204011, 0, 64 << 10, 2, 0) },
325 { INFO("m45pe80", 0x204014, 0, 64 << 10, 16, 0) },
326 { INFO("m45pe16", 0x204015, 0, 64 << 10, 32, 0) },
327
328 { INFO("m25pe20", 0x208012, 0, 64 << 10, 4, 0) },
329 { INFO("m25pe80", 0x208014, 0, 64 << 10, 16, 0) },
330 { INFO("m25pe16", 0x208015, 0, 64 << 10, 32, ER_4K) },
331
332 { INFO("m25px32", 0x207116, 0, 64 << 10, 64, ER_4K) },
333 { INFO("m25px32-s0", 0x207316, 0, 64 << 10, 64, ER_4K) },
334 { INFO("m25px32-s1", 0x206316, 0, 64 << 10, 64, ER_4K) },
335 { INFO("m25px64", 0x207117, 0, 64 << 10, 128, 0) },
336
337 /* Winbond -- w25x "blocks" are 64k, "sectors" are 4KiB */
338 { INFO("w25x10", 0xef3011, 0, 64 << 10, 2, ER_4K) },
339 { INFO("w25x20", 0xef3012, 0, 64 << 10, 4, ER_4K) },
340 { INFO("w25x40", 0xef3013, 0, 64 << 10, 8, ER_4K) },
341 { INFO("w25x80", 0xef3014, 0, 64 << 10, 16, ER_4K) },
342 { INFO("w25x16", 0xef3015, 0, 64 << 10, 32, ER_4K) },
343 { INFO("w25x32", 0xef3016, 0, 64 << 10, 64, ER_4K) },
344 { INFO("w25q32", 0xef4016, 0, 64 << 10, 64, ER_4K) },
345 { INFO("w25q32dw", 0xef6016, 0, 64 << 10, 64, ER_4K) },
346 { INFO("w25x64", 0xef3017, 0, 64 << 10, 128, ER_4K) },
347 { INFO("w25q64", 0xef4017, 0, 64 << 10, 128, ER_4K) },
348 { INFO("w25q80", 0xef5014, 0, 64 << 10, 16, ER_4K) },
349 { INFO("w25q80bl", 0xef4014, 0, 64 << 10, 16, ER_4K) },
350 { INFO("w25q256", 0xef4019, 0, 64 << 10, 512, ER_4K),
351 .sfdp_read = m25p80_sfdp_w25q256 },
352 { INFO("w25q512jv", 0xef4020, 0, 64 << 10, 1024, ER_4K),
353 .sfdp_read = m25p80_sfdp_w25q512jv },
354 { INFO("w25q01jvq", 0xef4021, 0, 64 << 10, 2048, ER_4K),
355 .sfdp_read = m25p80_sfdp_w25q01jvq },
356 };
357
358 typedef enum {
359 NOP = 0,
360 WRSR = 0x1,
361 WRDI = 0x4,
362 RDSR = 0x5,
363 WREN = 0x6,
364 BRRD = 0x16,
365 BRWR = 0x17,
366 JEDEC_READ = 0x9f,
367 BULK_ERASE_60 = 0x60,
368 BULK_ERASE = 0xc7,
369 READ_FSR = 0x70,
370 RDCR = 0x15,
371 RDSFDP = 0x5a,
372
373 READ = 0x03,
374 READ4 = 0x13,
375 FAST_READ = 0x0b,
376 FAST_READ4 = 0x0c,
377 DOR = 0x3b,
378 DOR4 = 0x3c,
379 QOR = 0x6b,
380 QOR4 = 0x6c,
381 DIOR = 0xbb,
382 DIOR4 = 0xbc,
383 QIOR = 0xeb,
384 QIOR4 = 0xec,
385
386 PP = 0x02,
387 PP4 = 0x12,
388 PP4_4 = 0x3e,
389 DPP = 0xa2,
390 QPP = 0x32,
391 QPP_4 = 0x34,
392 RDID_90 = 0x90,
393 RDID_AB = 0xab,
394 AAI_WP = 0xad,
395
396 ERASE_4K = 0x20,
397 ERASE4_4K = 0x21,
398 ERASE_32K = 0x52,
399 ERASE4_32K = 0x5c,
400 ERASE_SECTOR = 0xd8,
401 ERASE4_SECTOR = 0xdc,
402
403 EN_4BYTE_ADDR = 0xB7,
404 EX_4BYTE_ADDR = 0xE9,
405
406 EXTEND_ADDR_READ = 0xC8,
407 EXTEND_ADDR_WRITE = 0xC5,
408
409 RESET_ENABLE = 0x66,
410 RESET_MEMORY = 0x99,
411
412 /*
413 * Micron: 0x35 - enable QPI
414 * Spansion: 0x35 - read control register
415 */
416 RDCR_EQIO = 0x35,
417 RSTQIO = 0xf5,
418
419 RNVCR = 0xB5,
420 WNVCR = 0xB1,
421
422 RVCR = 0x85,
423 WVCR = 0x81,
424
425 REVCR = 0x65,
426 WEVCR = 0x61,
427
428 DIE_ERASE = 0xC4,
429 } FlashCMD;
430
431 typedef enum {
432 STATE_IDLE,
433 STATE_PAGE_PROGRAM,
434 STATE_READ,
435 STATE_COLLECTING_DATA,
436 STATE_COLLECTING_VAR_LEN_DATA,
437 STATE_READING_DATA,
438 STATE_READING_SFDP,
439 } CMDState;
440
441 typedef enum {
442 MAN_SPANSION,
443 MAN_MACRONIX,
444 MAN_NUMONYX,
445 MAN_WINBOND,
446 MAN_SST,
447 MAN_ISSI,
448 MAN_GENERIC,
449 } Manufacturer;
450
451 typedef enum {
452 MODE_STD = 0,
453 MODE_DIO = 1,
454 MODE_QIO = 2
455 } SPIMode;
456
457 #define M25P80_INTERNAL_DATA_BUFFER_SZ 16
458
459 struct Flash {
460 SSIPeripheral parent_obj;
461
462 BlockBackend *blk;
463
464 uint8_t *storage;
465 uint32_t size;
466 int page_size;
467
468 uint8_t state;
469 uint8_t data[M25P80_INTERNAL_DATA_BUFFER_SZ];
470 uint32_t len;
471 uint32_t pos;
472 bool data_read_loop;
473 uint8_t needed_bytes;
474 uint8_t cmd_in_progress;
475 uint32_t cur_addr;
476 uint32_t nonvolatile_cfg;
477 /* Configuration register for Macronix */
478 uint32_t volatile_cfg;
479 uint32_t enh_volatile_cfg;
480 /* Spansion cfg registers. */
481 uint8_t spansion_cr1nv;
482 uint8_t spansion_cr2nv;
483 uint8_t spansion_cr3nv;
484 uint8_t spansion_cr4nv;
485 uint8_t spansion_cr1v;
486 uint8_t spansion_cr2v;
487 uint8_t spansion_cr3v;
488 uint8_t spansion_cr4v;
489 bool wp_level;
490 bool write_enable;
491 bool four_bytes_address_mode;
492 bool reset_enable;
493 bool quad_enable;
494 bool aai_enable;
495 bool block_protect0;
496 bool block_protect1;
497 bool block_protect2;
498 bool block_protect3;
499 bool top_bottom_bit;
500 bool status_register_write_disabled;
501 uint8_t ear;
502
503 int64_t dirty_page;
504
505 const FlashPartInfo *pi;
506
507 };
508
509 struct M25P80Class {
510 SSIPeripheralClass parent_class;
511 FlashPartInfo *pi;
512 };
513
514 #define TYPE_M25P80 "m25p80-generic"
515 OBJECT_DECLARE_TYPE(Flash, M25P80Class, M25P80)
516
517 static inline Manufacturer get_man(Flash *s)
518 {
519 switch (s->pi->id[0]) {
520 case 0x20:
521 return MAN_NUMONYX;
522 case 0xEF:
523 return MAN_WINBOND;
524 case 0x01:
525 return MAN_SPANSION;
526 case 0xC2:
527 return MAN_MACRONIX;
528 case 0xBF:
529 return MAN_SST;
530 case 0x9D:
531 return MAN_ISSI;
532 default:
533 return MAN_GENERIC;
534 }
535 }
536
537 static void blk_sync_complete(void *opaque, int ret)
538 {
539 QEMUIOVector *iov = opaque;
540
541 qemu_iovec_destroy(iov);
542 g_free(iov);
543
544 /* do nothing. Masters do not directly interact with the backing store,
545 * only the working copy so no mutexing required.
546 */
547 }
548
549 static void flash_sync_page(Flash *s, int page)
550 {
551 QEMUIOVector *iov;
552
553 if (!s->blk || !blk_is_writable(s->blk)) {
554 return;
555 }
556
557 iov = g_new(QEMUIOVector, 1);
558 qemu_iovec_init(iov, 1);
559 qemu_iovec_add(iov, s->storage + page * s->pi->page_size,
560 s->pi->page_size);
561 blk_aio_pwritev(s->blk, page * s->pi->page_size, iov, 0,
562 blk_sync_complete, iov);
563 }
564
565 static inline void flash_sync_area(Flash *s, int64_t off, int64_t len)
566 {
567 QEMUIOVector *iov;
568
569 if (!s->blk || !blk_is_writable(s->blk)) {
570 return;
571 }
572
573 assert(!(len % BDRV_SECTOR_SIZE));
574 iov = g_new(QEMUIOVector, 1);
575 qemu_iovec_init(iov, 1);
576 qemu_iovec_add(iov, s->storage + off, len);
577 blk_aio_pwritev(s->blk, off, iov, 0, blk_sync_complete, iov);
578 }
579
580 static void flash_erase(Flash *s, int offset, FlashCMD cmd)
581 {
582 uint32_t len;
583 uint8_t capa_to_assert = 0;
584
585 switch (cmd) {
586 case ERASE_4K:
587 case ERASE4_4K:
588 len = 4 * KiB;
589 capa_to_assert = ER_4K;
590 break;
591 case ERASE_32K:
592 case ERASE4_32K:
593 len = 32 * KiB;
594 capa_to_assert = ER_32K;
595 break;
596 case ERASE_SECTOR:
597 case ERASE4_SECTOR:
598 len = s->pi->sector_size;
599 break;
600 case BULK_ERASE:
601 len = s->size;
602 break;
603 case DIE_ERASE:
604 if (s->pi->die_cnt) {
605 len = s->size / s->pi->die_cnt;
606 offset = offset & (~(len - 1));
607 } else {
608 qemu_log_mask(LOG_GUEST_ERROR, "M25P80: die erase is not supported"
609 " by device\n");
610 return;
611 }
612 break;
613 default:
614 abort();
615 }
616
617 trace_m25p80_flash_erase(s, offset, len);
618
619 if ((s->pi->flags & capa_to_assert) != capa_to_assert) {
620 qemu_log_mask(LOG_GUEST_ERROR, "M25P80: %d erase size not supported by"
621 " device\n", len);
622 }
623
624 if (!s->write_enable) {
625 qemu_log_mask(LOG_GUEST_ERROR, "M25P80: erase with write protect!\n");
626 return;
627 }
628 memset(s->storage + offset, 0xff, len);
629 flash_sync_area(s, offset, len);
630 }
631
632 static inline void flash_sync_dirty(Flash *s, int64_t newpage)
633 {
634 if (s->dirty_page >= 0 && s->dirty_page != newpage) {
635 flash_sync_page(s, s->dirty_page);
636 s->dirty_page = newpage;
637 }
638 }
639
640 static inline
641 void flash_write8(Flash *s, uint32_t addr, uint8_t data)
642 {
643 uint32_t page = addr / s->pi->page_size;
644 uint8_t prev = s->storage[s->cur_addr];
645 uint32_t block_protect_value = (s->block_protect3 << 3) |
646 (s->block_protect2 << 2) |
647 (s->block_protect1 << 1) |
648 (s->block_protect0 << 0);
649
650 if (!s->write_enable) {
651 qemu_log_mask(LOG_GUEST_ERROR, "M25P80: write with write protect!\n");
652 return;
653 }
654
655 if (block_protect_value > 0) {
656 uint32_t num_protected_sectors = 1 << (block_protect_value - 1);
657 uint32_t sector = addr / s->pi->sector_size;
658
659 /* top_bottom_bit == 0 means TOP */
660 if (!s->top_bottom_bit) {
661 if (s->pi->n_sectors <= sector + num_protected_sectors) {
662 qemu_log_mask(LOG_GUEST_ERROR,
663 "M25P80: write with write protect!\n");
664 return;
665 }
666 } else {
667 if (sector < num_protected_sectors) {
668 qemu_log_mask(LOG_GUEST_ERROR,
669 "M25P80: write with write protect!\n");
670 return;
671 }
672 }
673 }
674
675 if ((prev ^ data) & data) {
676 trace_m25p80_programming_zero_to_one(s, addr, prev, data);
677 }
678
679 if (s->pi->flags & EEPROM) {
680 s->storage[s->cur_addr] = data;
681 } else {
682 s->storage[s->cur_addr] &= data;
683 }
684
685 flash_sync_dirty(s, page);
686 s->dirty_page = page;
687 }
688
689 static inline int get_addr_length(Flash *s)
690 {
691 /* check if eeprom is in use */
692 if (s->pi->flags == EEPROM) {
693 return 2;
694 }
695
696 switch (s->cmd_in_progress) {
697 case RDSFDP:
698 return 3;
699 case PP4:
700 case PP4_4:
701 case QPP_4:
702 case READ4:
703 case QIOR4:
704 case ERASE4_4K:
705 case ERASE4_32K:
706 case ERASE4_SECTOR:
707 case FAST_READ4:
708 case DOR4:
709 case QOR4:
710 case DIOR4:
711 return 4;
712 default:
713 return s->four_bytes_address_mode ? 4 : 3;
714 }
715 }
716
717 static void complete_collecting_data(Flash *s)
718 {
719 int i, n;
720
721 n = get_addr_length(s);
722 s->cur_addr = (n == 3 ? s->ear : 0);
723 for (i = 0; i < n; ++i) {
724 s->cur_addr <<= 8;
725 s->cur_addr |= s->data[i];
726 }
727
728 s->cur_addr &= s->size - 1;
729
730 s->state = STATE_IDLE;
731
732 trace_m25p80_complete_collecting(s, s->cmd_in_progress, n, s->ear,
733 s->cur_addr);
734
735 switch (s->cmd_in_progress) {
736 case DPP:
737 case QPP:
738 case QPP_4:
739 case PP:
740 case PP4:
741 case PP4_4:
742 s->state = STATE_PAGE_PROGRAM;
743 break;
744 case AAI_WP:
745 /* AAI programming starts from the even address */
746 s->cur_addr &= ~BIT(0);
747 s->state = STATE_PAGE_PROGRAM;
748 break;
749 case READ:
750 case READ4:
751 case FAST_READ:
752 case FAST_READ4:
753 case DOR:
754 case DOR4:
755 case QOR:
756 case QOR4:
757 case DIOR:
758 case DIOR4:
759 case QIOR:
760 case QIOR4:
761 s->state = STATE_READ;
762 break;
763 case ERASE_4K:
764 case ERASE4_4K:
765 case ERASE_32K:
766 case ERASE4_32K:
767 case ERASE_SECTOR:
768 case ERASE4_SECTOR:
769 case DIE_ERASE:
770 flash_erase(s, s->cur_addr, s->cmd_in_progress);
771 break;
772 case WRSR:
773 s->status_register_write_disabled = extract32(s->data[0], 7, 1);
774 s->block_protect0 = extract32(s->data[0], 2, 1);
775 s->block_protect1 = extract32(s->data[0], 3, 1);
776 s->block_protect2 = extract32(s->data[0], 4, 1);
777 if (s->pi->flags & HAS_SR_TB) {
778 s->top_bottom_bit = extract32(s->data[0], 5, 1);
779 }
780 if (s->pi->flags & HAS_SR_BP3_BIT6) {
781 s->block_protect3 = extract32(s->data[0], 6, 1);
782 }
783
784 switch (get_man(s)) {
785 case MAN_SPANSION:
786 s->quad_enable = !!(s->data[1] & 0x02);
787 break;
788 case MAN_ISSI:
789 s->quad_enable = extract32(s->data[0], 6, 1);
790 break;
791 case MAN_MACRONIX:
792 s->quad_enable = extract32(s->data[0], 6, 1);
793 if (s->len > 1) {
794 s->volatile_cfg = s->data[1];
795 s->four_bytes_address_mode = extract32(s->data[1], 5, 1);
796 }
797 break;
798 default:
799 break;
800 }
801 if (s->write_enable) {
802 s->write_enable = false;
803 }
804 break;
805 case BRWR:
806 case EXTEND_ADDR_WRITE:
807 s->ear = s->data[0];
808 break;
809 case WNVCR:
810 s->nonvolatile_cfg = s->data[0] | (s->data[1] << 8);
811 break;
812 case WVCR:
813 s->volatile_cfg = s->data[0];
814 break;
815 case WEVCR:
816 s->enh_volatile_cfg = s->data[0];
817 break;
818 case RDID_90:
819 case RDID_AB:
820 if (get_man(s) == MAN_SST) {
821 if (s->cur_addr <= 1) {
822 if (s->cur_addr) {
823 s->data[0] = s->pi->id[2];
824 s->data[1] = s->pi->id[0];
825 } else {
826 s->data[0] = s->pi->id[0];
827 s->data[1] = s->pi->id[2];
828 }
829 s->pos = 0;
830 s->len = 2;
831 s->data_read_loop = true;
832 s->state = STATE_READING_DATA;
833 } else {
834 qemu_log_mask(LOG_GUEST_ERROR,
835 "M25P80: Invalid read id address\n");
836 }
837 } else {
838 qemu_log_mask(LOG_GUEST_ERROR,
839 "M25P80: Read id (command 0x90/0xAB) is not supported"
840 " by device\n");
841 }
842 break;
843
844 case RDSFDP:
845 s->state = STATE_READING_SFDP;
846 break;
847
848 default:
849 break;
850 }
851 }
852
853 static void reset_memory(Flash *s)
854 {
855 s->cmd_in_progress = NOP;
856 s->cur_addr = 0;
857 s->ear = 0;
858 s->four_bytes_address_mode = false;
859 s->len = 0;
860 s->needed_bytes = 0;
861 s->pos = 0;
862 s->state = STATE_IDLE;
863 s->write_enable = false;
864 s->reset_enable = false;
865 s->quad_enable = false;
866 s->aai_enable = false;
867
868 switch (get_man(s)) {
869 case MAN_NUMONYX:
870 s->volatile_cfg = 0;
871 s->volatile_cfg |= VCFG_DUMMY;
872 s->volatile_cfg |= VCFG_WRAP_SEQUENTIAL;
873 if ((s->nonvolatile_cfg & NVCFG_XIP_MODE_MASK)
874 == NVCFG_XIP_MODE_DISABLED) {
875 s->volatile_cfg |= VCFG_XIP_MODE_DISABLED;
876 }
877 s->volatile_cfg |= deposit32(s->volatile_cfg,
878 VCFG_DUMMY_CLK_POS,
879 CFG_DUMMY_CLK_LEN,
880 extract32(s->nonvolatile_cfg,
881 NVCFG_DUMMY_CLK_POS,
882 CFG_DUMMY_CLK_LEN)
883 );
884
885 s->enh_volatile_cfg = 0;
886 s->enh_volatile_cfg |= EVCFG_OUT_DRIVER_STRENGTH_DEF;
887 s->enh_volatile_cfg |= EVCFG_VPP_ACCELERATOR;
888 s->enh_volatile_cfg |= EVCFG_RESET_HOLD_ENABLED;
889 if (s->nonvolatile_cfg & NVCFG_DUAL_IO_MASK) {
890 s->enh_volatile_cfg |= EVCFG_DUAL_IO_DISABLED;
891 }
892 if (s->nonvolatile_cfg & NVCFG_QUAD_IO_MASK) {
893 s->enh_volatile_cfg |= EVCFG_QUAD_IO_DISABLED;
894 }
895 if (!(s->nonvolatile_cfg & NVCFG_4BYTE_ADDR_MASK)) {
896 s->four_bytes_address_mode = true;
897 }
898 if (!(s->nonvolatile_cfg & NVCFG_LOWER_SEGMENT_MASK)) {
899 s->ear = s->size / MAX_3BYTES_SIZE - 1;
900 }
901 break;
902 case MAN_MACRONIX:
903 s->volatile_cfg = 0x7;
904 break;
905 case MAN_SPANSION:
906 s->spansion_cr1v = s->spansion_cr1nv;
907 s->spansion_cr2v = s->spansion_cr2nv;
908 s->spansion_cr3v = s->spansion_cr3nv;
909 s->spansion_cr4v = s->spansion_cr4nv;
910 s->quad_enable = extract32(s->spansion_cr1v,
911 SPANSION_QUAD_CFG_POS,
912 SPANSION_QUAD_CFG_LEN
913 );
914 s->four_bytes_address_mode = extract32(s->spansion_cr2v,
915 SPANSION_ADDR_LEN_POS,
916 SPANSION_ADDR_LEN_LEN
917 );
918 break;
919 default:
920 break;
921 }
922
923 trace_m25p80_reset_done(s);
924 }
925
926 static uint8_t numonyx_mode(Flash *s)
927 {
928 if (!(s->enh_volatile_cfg & EVCFG_QUAD_IO_DISABLED)) {
929 return MODE_QIO;
930 } else if (!(s->enh_volatile_cfg & EVCFG_DUAL_IO_DISABLED)) {
931 return MODE_DIO;
932 } else {
933 return MODE_STD;
934 }
935 }
936
937 static uint8_t numonyx_extract_cfg_num_dummies(Flash *s)
938 {
939 uint8_t num_dummies;
940 uint8_t mode;
941 assert(get_man(s) == MAN_NUMONYX);
942
943 mode = numonyx_mode(s);
944 num_dummies = extract32(s->volatile_cfg, 4, 4);
945
946 if (num_dummies == 0x0 || num_dummies == 0xf) {
947 switch (s->cmd_in_progress) {
948 case QIOR:
949 case QIOR4:
950 num_dummies = 10;
951 break;
952 default:
953 num_dummies = (mode == MODE_QIO) ? 10 : 8;
954 break;
955 }
956 }
957
958 return num_dummies;
959 }
960
961 static void decode_fast_read_cmd(Flash *s)
962 {
963 s->needed_bytes = get_addr_length(s);
964 switch (get_man(s)) {
965 /* Dummy cycles - modeled with bytes writes instead of bits */
966 case MAN_SST:
967 s->needed_bytes += 1;
968 break;
969 case MAN_WINBOND:
970 s->needed_bytes += 8;
971 break;
972 case MAN_NUMONYX:
973 s->needed_bytes += numonyx_extract_cfg_num_dummies(s);
974 break;
975 case MAN_MACRONIX:
976 if (extract32(s->volatile_cfg, 6, 2) == 1) {
977 s->needed_bytes += 6;
978 } else {
979 s->needed_bytes += 8;
980 }
981 break;
982 case MAN_SPANSION:
983 s->needed_bytes += extract32(s->spansion_cr2v,
984 SPANSION_DUMMY_CLK_POS,
985 SPANSION_DUMMY_CLK_LEN
986 );
987 break;
988 case MAN_ISSI:
989 /*
990 * The Fast Read instruction code is followed by address bytes and
991 * dummy cycles, transmitted via the SI line.
992 *
993 * The number of dummy cycles is configurable but this is currently
994 * unmodeled, hence the default value 8 is used.
995 *
996 * QPI (Quad Peripheral Interface) mode has different default value
997 * of dummy cycles, but this is unsupported at the time being.
998 */
999 s->needed_bytes += 1;
1000 break;
1001 default:
1002 break;
1003 }
1004 s->pos = 0;
1005 s->len = 0;
1006 s->state = STATE_COLLECTING_DATA;
1007 }
1008
1009 static void decode_dio_read_cmd(Flash *s)
1010 {
1011 s->needed_bytes = get_addr_length(s);
1012 /* Dummy cycles modeled with bytes writes instead of bits */
1013 switch (get_man(s)) {
1014 case MAN_WINBOND:
1015 s->needed_bytes += WINBOND_CONTINUOUS_READ_MODE_CMD_LEN;
1016 break;
1017 case MAN_SPANSION:
1018 s->needed_bytes += SPANSION_CONTINUOUS_READ_MODE_CMD_LEN;
1019 s->needed_bytes += extract32(s->spansion_cr2v,
1020 SPANSION_DUMMY_CLK_POS,
1021 SPANSION_DUMMY_CLK_LEN
1022 );
1023 break;
1024 case MAN_NUMONYX:
1025 s->needed_bytes += numonyx_extract_cfg_num_dummies(s);
1026 break;
1027 case MAN_MACRONIX:
1028 switch (extract32(s->volatile_cfg, 6, 2)) {
1029 case 1:
1030 s->needed_bytes += 6;
1031 break;
1032 case 2:
1033 s->needed_bytes += 8;
1034 break;
1035 default:
1036 s->needed_bytes += 4;
1037 break;
1038 }
1039 break;
1040 case MAN_ISSI:
1041 /*
1042 * The Fast Read Dual I/O instruction code is followed by address bytes
1043 * and dummy cycles, transmitted via the IO1 and IO0 line.
1044 *
1045 * The number of dummy cycles is configurable but this is currently
1046 * unmodeled, hence the default value 4 is used.
1047 */
1048 s->needed_bytes += 1;
1049 break;
1050 default:
1051 break;
1052 }
1053 s->pos = 0;
1054 s->len = 0;
1055 s->state = STATE_COLLECTING_DATA;
1056 }
1057
1058 static void decode_qio_read_cmd(Flash *s)
1059 {
1060 s->needed_bytes = get_addr_length(s);
1061 /* Dummy cycles modeled with bytes writes instead of bits */
1062 switch (get_man(s)) {
1063 case MAN_WINBOND:
1064 s->needed_bytes += WINBOND_CONTINUOUS_READ_MODE_CMD_LEN;
1065 s->needed_bytes += 4;
1066 break;
1067 case MAN_SPANSION:
1068 s->needed_bytes += SPANSION_CONTINUOUS_READ_MODE_CMD_LEN;
1069 s->needed_bytes += extract32(s->spansion_cr2v,
1070 SPANSION_DUMMY_CLK_POS,
1071 SPANSION_DUMMY_CLK_LEN
1072 );
1073 break;
1074 case MAN_NUMONYX:
1075 s->needed_bytes += numonyx_extract_cfg_num_dummies(s);
1076 break;
1077 case MAN_MACRONIX:
1078 switch (extract32(s->volatile_cfg, 6, 2)) {
1079 case 1:
1080 s->needed_bytes += 4;
1081 break;
1082 case 2:
1083 s->needed_bytes += 8;
1084 break;
1085 default:
1086 s->needed_bytes += 6;
1087 break;
1088 }
1089 break;
1090 case MAN_ISSI:
1091 /*
1092 * The Fast Read Quad I/O instruction code is followed by address bytes
1093 * and dummy cycles, transmitted via the IO3, IO2, IO1 and IO0 line.
1094 *
1095 * The number of dummy cycles is configurable but this is currently
1096 * unmodeled, hence the default value 6 is used.
1097 *
1098 * QPI (Quad Peripheral Interface) mode has different default value
1099 * of dummy cycles, but this is unsupported at the time being.
1100 */
1101 s->needed_bytes += 3;
1102 break;
1103 default:
1104 break;
1105 }
1106 s->pos = 0;
1107 s->len = 0;
1108 s->state = STATE_COLLECTING_DATA;
1109 }
1110
1111 static bool is_valid_aai_cmd(uint32_t cmd)
1112 {
1113 return cmd == AAI_WP || cmd == WRDI || cmd == RDSR;
1114 }
1115
1116 static void decode_new_cmd(Flash *s, uint32_t value)
1117 {
1118 int i;
1119
1120 s->cmd_in_progress = value;
1121 trace_m25p80_command_decoded(s, value);
1122
1123 if (value != RESET_MEMORY) {
1124 s->reset_enable = false;
1125 }
1126
1127 if (get_man(s) == MAN_SST && s->aai_enable && !is_valid_aai_cmd(value)) {
1128 qemu_log_mask(LOG_GUEST_ERROR,
1129 "M25P80: Invalid cmd within AAI programming sequence");
1130 }
1131
1132 switch (value) {
1133
1134 case ERASE_4K:
1135 case ERASE4_4K:
1136 case ERASE_32K:
1137 case ERASE4_32K:
1138 case ERASE_SECTOR:
1139 case ERASE4_SECTOR:
1140 case PP:
1141 case PP4:
1142 case DIE_ERASE:
1143 case RDID_90:
1144 case RDID_AB:
1145 s->needed_bytes = get_addr_length(s);
1146 s->pos = 0;
1147 s->len = 0;
1148 s->state = STATE_COLLECTING_DATA;
1149 break;
1150 case READ:
1151 case READ4:
1152 if (get_man(s) != MAN_NUMONYX || numonyx_mode(s) == MODE_STD) {
1153 s->needed_bytes = get_addr_length(s);
1154 s->pos = 0;
1155 s->len = 0;
1156 s->state = STATE_COLLECTING_DATA;
1157 } else {
1158 qemu_log_mask(LOG_GUEST_ERROR, "M25P80: Cannot execute cmd %x in "
1159 "DIO or QIO mode\n", s->cmd_in_progress);
1160 }
1161 break;
1162 case DPP:
1163 if (get_man(s) != MAN_NUMONYX || numonyx_mode(s) != MODE_QIO) {
1164 s->needed_bytes = get_addr_length(s);
1165 s->pos = 0;
1166 s->len = 0;
1167 s->state = STATE_COLLECTING_DATA;
1168 } else {
1169 qemu_log_mask(LOG_GUEST_ERROR, "M25P80: Cannot execute cmd %x in "
1170 "QIO mode\n", s->cmd_in_progress);
1171 }
1172 break;
1173 case QPP:
1174 case QPP_4:
1175 case PP4_4:
1176 if (get_man(s) != MAN_NUMONYX || numonyx_mode(s) != MODE_DIO) {
1177 s->needed_bytes = get_addr_length(s);
1178 s->pos = 0;
1179 s->len = 0;
1180 s->state = STATE_COLLECTING_DATA;
1181 } else {
1182 qemu_log_mask(LOG_GUEST_ERROR, "M25P80: Cannot execute cmd %x in "
1183 "DIO mode\n", s->cmd_in_progress);
1184 }
1185 break;
1186
1187 case FAST_READ:
1188 case FAST_READ4:
1189 decode_fast_read_cmd(s);
1190 break;
1191 case DOR:
1192 case DOR4:
1193 if (get_man(s) != MAN_NUMONYX || numonyx_mode(s) != MODE_QIO) {
1194 decode_fast_read_cmd(s);
1195 } else {
1196 qemu_log_mask(LOG_GUEST_ERROR, "M25P80: Cannot execute cmd %x in "
1197 "QIO mode\n", s->cmd_in_progress);
1198 }
1199 break;
1200 case QOR:
1201 case QOR4:
1202 if (get_man(s) != MAN_NUMONYX || numonyx_mode(s) != MODE_DIO) {
1203 decode_fast_read_cmd(s);
1204 } else {
1205 qemu_log_mask(LOG_GUEST_ERROR, "M25P80: Cannot execute cmd %x in "
1206 "DIO mode\n", s->cmd_in_progress);
1207 }
1208 break;
1209
1210 case DIOR:
1211 case DIOR4:
1212 if (get_man(s) != MAN_NUMONYX || numonyx_mode(s) != MODE_QIO) {
1213 decode_dio_read_cmd(s);
1214 } else {
1215 qemu_log_mask(LOG_GUEST_ERROR, "M25P80: Cannot execute cmd %x in "
1216 "QIO mode\n", s->cmd_in_progress);
1217 }
1218 break;
1219
1220 case QIOR:
1221 case QIOR4:
1222 if (get_man(s) != MAN_NUMONYX || numonyx_mode(s) != MODE_DIO) {
1223 decode_qio_read_cmd(s);
1224 } else {
1225 qemu_log_mask(LOG_GUEST_ERROR, "M25P80: Cannot execute cmd %x in "
1226 "DIO mode\n", s->cmd_in_progress);
1227 }
1228 break;
1229
1230 case WRSR:
1231 /*
1232 * If WP# is low and status_register_write_disabled is high,
1233 * status register writes are disabled.
1234 * This is also called "hardware protected mode" (HPM). All other
1235 * combinations of the two states are called "software protected mode"
1236 * (SPM), and status register writes are permitted.
1237 */
1238 if ((s->wp_level == 0 && s->status_register_write_disabled)
1239 || !s->write_enable) {
1240 qemu_log_mask(LOG_GUEST_ERROR,
1241 "M25P80: Status register write is disabled!\n");
1242 break;
1243 }
1244
1245 switch (get_man(s)) {
1246 case MAN_SPANSION:
1247 s->needed_bytes = 2;
1248 s->state = STATE_COLLECTING_DATA;
1249 break;
1250 case MAN_MACRONIX:
1251 s->needed_bytes = 2;
1252 s->state = STATE_COLLECTING_VAR_LEN_DATA;
1253 break;
1254 default:
1255 s->needed_bytes = 1;
1256 s->state = STATE_COLLECTING_DATA;
1257 }
1258 s->pos = 0;
1259 break;
1260
1261 case WRDI:
1262 s->write_enable = false;
1263 if (get_man(s) == MAN_SST) {
1264 s->aai_enable = false;
1265 }
1266 break;
1267 case WREN:
1268 s->write_enable = true;
1269 break;
1270
1271 case RDSR:
1272 s->data[0] = (!!s->write_enable) << 1;
1273 s->data[0] |= (!!s->status_register_write_disabled) << 7;
1274 s->data[0] |= (!!s->block_protect0) << 2;
1275 s->data[0] |= (!!s->block_protect1) << 3;
1276 s->data[0] |= (!!s->block_protect2) << 4;
1277 if (s->pi->flags & HAS_SR_TB) {
1278 s->data[0] |= (!!s->top_bottom_bit) << 5;
1279 }
1280 if (s->pi->flags & HAS_SR_BP3_BIT6) {
1281 s->data[0] |= (!!s->block_protect3) << 6;
1282 }
1283
1284 if (get_man(s) == MAN_MACRONIX || get_man(s) == MAN_ISSI) {
1285 s->data[0] |= (!!s->quad_enable) << 6;
1286 }
1287 if (get_man(s) == MAN_SST) {
1288 s->data[0] |= (!!s->aai_enable) << 6;
1289 }
1290
1291 s->pos = 0;
1292 s->len = 1;
1293 s->data_read_loop = true;
1294 s->state = STATE_READING_DATA;
1295 break;
1296
1297 case READ_FSR:
1298 s->data[0] = FSR_FLASH_READY;
1299 if (s->four_bytes_address_mode) {
1300 s->data[0] |= FSR_4BYTE_ADDR_MODE_ENABLED;
1301 }
1302 s->pos = 0;
1303 s->len = 1;
1304 s->data_read_loop = true;
1305 s->state = STATE_READING_DATA;
1306 break;
1307
1308 case JEDEC_READ:
1309 if (get_man(s) != MAN_NUMONYX || numonyx_mode(s) == MODE_STD) {
1310 trace_m25p80_populated_jedec(s);
1311 for (i = 0; i < s->pi->id_len; i++) {
1312 s->data[i] = s->pi->id[i];
1313 }
1314 for (; i < SPI_NOR_MAX_ID_LEN; i++) {
1315 s->data[i] = 0;
1316 }
1317
1318 s->len = SPI_NOR_MAX_ID_LEN;
1319 s->pos = 0;
1320 s->state = STATE_READING_DATA;
1321 } else {
1322 qemu_log_mask(LOG_GUEST_ERROR, "M25P80: Cannot execute JEDEC read "
1323 "in DIO or QIO mode\n");
1324 }
1325 break;
1326
1327 case RDCR:
1328 s->data[0] = s->volatile_cfg & 0xFF;
1329 s->data[0] |= (!!s->four_bytes_address_mode) << 5;
1330 s->pos = 0;
1331 s->len = 1;
1332 s->state = STATE_READING_DATA;
1333 break;
1334
1335 case BULK_ERASE_60:
1336 case BULK_ERASE:
1337 if (s->write_enable) {
1338 trace_m25p80_chip_erase(s);
1339 flash_erase(s, 0, BULK_ERASE);
1340 } else {
1341 qemu_log_mask(LOG_GUEST_ERROR, "M25P80: chip erase with write "
1342 "protect!\n");
1343 }
1344 break;
1345 case NOP:
1346 break;
1347 case EN_4BYTE_ADDR:
1348 s->four_bytes_address_mode = true;
1349 break;
1350 case EX_4BYTE_ADDR:
1351 s->four_bytes_address_mode = false;
1352 break;
1353 case BRRD:
1354 case EXTEND_ADDR_READ:
1355 s->data[0] = s->ear;
1356 s->pos = 0;
1357 s->len = 1;
1358 s->state = STATE_READING_DATA;
1359 break;
1360 case BRWR:
1361 case EXTEND_ADDR_WRITE:
1362 if (s->write_enable) {
1363 s->needed_bytes = 1;
1364 s->pos = 0;
1365 s->len = 0;
1366 s->state = STATE_COLLECTING_DATA;
1367 }
1368 break;
1369 case RNVCR:
1370 s->data[0] = s->nonvolatile_cfg & 0xFF;
1371 s->data[1] = (s->nonvolatile_cfg >> 8) & 0xFF;
1372 s->pos = 0;
1373 s->len = 2;
1374 s->state = STATE_READING_DATA;
1375 break;
1376 case WNVCR:
1377 if (s->write_enable && get_man(s) == MAN_NUMONYX) {
1378 s->needed_bytes = 2;
1379 s->pos = 0;
1380 s->len = 0;
1381 s->state = STATE_COLLECTING_DATA;
1382 }
1383 break;
1384 case RVCR:
1385 s->data[0] = s->volatile_cfg & 0xFF;
1386 s->pos = 0;
1387 s->len = 1;
1388 s->state = STATE_READING_DATA;
1389 break;
1390 case WVCR:
1391 if (s->write_enable) {
1392 s->needed_bytes = 1;
1393 s->pos = 0;
1394 s->len = 0;
1395 s->state = STATE_COLLECTING_DATA;
1396 }
1397 break;
1398 case REVCR:
1399 s->data[0] = s->enh_volatile_cfg & 0xFF;
1400 s->pos = 0;
1401 s->len = 1;
1402 s->state = STATE_READING_DATA;
1403 break;
1404 case WEVCR:
1405 if (s->write_enable) {
1406 s->needed_bytes = 1;
1407 s->pos = 0;
1408 s->len = 0;
1409 s->state = STATE_COLLECTING_DATA;
1410 }
1411 break;
1412 case RESET_ENABLE:
1413 s->reset_enable = true;
1414 break;
1415 case RESET_MEMORY:
1416 if (s->reset_enable) {
1417 reset_memory(s);
1418 }
1419 break;
1420 case RDCR_EQIO:
1421 switch (get_man(s)) {
1422 case MAN_SPANSION:
1423 s->data[0] = (!!s->quad_enable) << 1;
1424 s->pos = 0;
1425 s->len = 1;
1426 s->state = STATE_READING_DATA;
1427 break;
1428 case MAN_MACRONIX:
1429 s->quad_enable = true;
1430 break;
1431 default:
1432 break;
1433 }
1434 break;
1435 case RSTQIO:
1436 s->quad_enable = false;
1437 break;
1438 case AAI_WP:
1439 if (get_man(s) == MAN_SST) {
1440 if (s->write_enable) {
1441 if (s->aai_enable) {
1442 s->state = STATE_PAGE_PROGRAM;
1443 } else {
1444 s->aai_enable = true;
1445 s->needed_bytes = get_addr_length(s);
1446 s->state = STATE_COLLECTING_DATA;
1447 }
1448 } else {
1449 qemu_log_mask(LOG_GUEST_ERROR,
1450 "M25P80: AAI_WP with write protect\n");
1451 }
1452 } else {
1453 qemu_log_mask(LOG_GUEST_ERROR, "M25P80: Unknown cmd %x\n", value);
1454 }
1455 break;
1456 case RDSFDP:
1457 if (s->pi->sfdp_read) {
1458 s->needed_bytes = get_addr_length(s) + 1; /* SFDP addr + dummy */
1459 s->pos = 0;
1460 s->len = 0;
1461 s->state = STATE_COLLECTING_DATA;
1462 break;
1463 }
1464 /* Fallthrough */
1465
1466 default:
1467 s->pos = 0;
1468 s->len = 1;
1469 s->state = STATE_READING_DATA;
1470 s->data_read_loop = true;
1471 s->data[0] = 0;
1472 qemu_log_mask(LOG_GUEST_ERROR, "M25P80: Unknown cmd %x\n", value);
1473 break;
1474 }
1475 }
1476
1477 static int m25p80_cs(SSIPeripheral *ss, bool select)
1478 {
1479 Flash *s = M25P80(ss);
1480
1481 if (select) {
1482 if (s->state == STATE_COLLECTING_VAR_LEN_DATA) {
1483 complete_collecting_data(s);
1484 }
1485 s->len = 0;
1486 s->pos = 0;
1487 s->state = STATE_IDLE;
1488 flash_sync_dirty(s, -1);
1489 s->data_read_loop = false;
1490 }
1491
1492 trace_m25p80_select(s, select ? "de" : "");
1493
1494 return 0;
1495 }
1496
1497 static uint32_t m25p80_transfer8(SSIPeripheral *ss, uint32_t tx)
1498 {
1499 Flash *s = M25P80(ss);
1500 uint32_t r = 0;
1501
1502 trace_m25p80_transfer(s, s->state, s->len, s->needed_bytes, s->pos,
1503 s->cur_addr, (uint8_t)tx);
1504
1505 switch (s->state) {
1506
1507 case STATE_PAGE_PROGRAM:
1508 trace_m25p80_page_program(s, s->cur_addr, (uint8_t)tx);
1509 flash_write8(s, s->cur_addr, (uint8_t)tx);
1510 s->cur_addr = (s->cur_addr + 1) & (s->size - 1);
1511
1512 if (get_man(s) == MAN_SST && s->aai_enable && s->cur_addr == 0) {
1513 /*
1514 * There is no wrap mode during AAI programming once the highest
1515 * unprotected memory address is reached. The Write-Enable-Latch
1516 * bit is automatically reset, and AAI programming mode aborts.
1517 */
1518 s->write_enable = false;
1519 s->aai_enable = false;
1520 }
1521
1522 break;
1523
1524 case STATE_READ:
1525 r = s->storage[s->cur_addr];
1526 trace_m25p80_read_byte(s, s->cur_addr, (uint8_t)r);
1527 s->cur_addr = (s->cur_addr + 1) & (s->size - 1);
1528 break;
1529
1530 case STATE_COLLECTING_DATA:
1531 case STATE_COLLECTING_VAR_LEN_DATA:
1532
1533 if (s->len >= M25P80_INTERNAL_DATA_BUFFER_SZ) {
1534 qemu_log_mask(LOG_GUEST_ERROR,
1535 "M25P80: Write overrun internal data buffer. "
1536 "SPI controller (QEMU emulator or guest driver) "
1537 "is misbehaving\n");
1538 s->len = s->pos = 0;
1539 s->state = STATE_IDLE;
1540 break;
1541 }
1542
1543 s->data[s->len] = (uint8_t)tx;
1544 s->len++;
1545
1546 if (s->len == s->needed_bytes) {
1547 complete_collecting_data(s);
1548 }
1549 break;
1550
1551 case STATE_READING_DATA:
1552
1553 if (s->pos >= M25P80_INTERNAL_DATA_BUFFER_SZ) {
1554 qemu_log_mask(LOG_GUEST_ERROR,
1555 "M25P80: Read overrun internal data buffer. "
1556 "SPI controller (QEMU emulator or guest driver) "
1557 "is misbehaving\n");
1558 s->len = s->pos = 0;
1559 s->state = STATE_IDLE;
1560 break;
1561 }
1562
1563 r = s->data[s->pos];
1564 trace_m25p80_read_data(s, s->pos, (uint8_t)r);
1565 s->pos++;
1566 if (s->pos == s->len) {
1567 s->pos = 0;
1568 if (!s->data_read_loop) {
1569 s->state = STATE_IDLE;
1570 }
1571 }
1572 break;
1573 case STATE_READING_SFDP:
1574 assert(s->pi->sfdp_read);
1575 r = s->pi->sfdp_read(s->cur_addr);
1576 trace_m25p80_read_sfdp(s, s->cur_addr, (uint8_t)r);
1577 s->cur_addr = (s->cur_addr + 1) & (M25P80_SFDP_MAX_SIZE - 1);
1578 break;
1579
1580 default:
1581 case STATE_IDLE:
1582 decode_new_cmd(s, (uint8_t)tx);
1583 break;
1584 }
1585
1586 return r;
1587 }
1588
1589 static void m25p80_write_protect_pin_irq_handler(void *opaque, int n, int level)
1590 {
1591 Flash *s = M25P80(opaque);
1592 /* WP# is just a single pin. */
1593 assert(n == 0);
1594 s->wp_level = !!level;
1595 }
1596
1597 static void m25p80_realize(SSIPeripheral *ss, Error **errp)
1598 {
1599 Flash *s = M25P80(ss);
1600 M25P80Class *mc = M25P80_GET_CLASS(s);
1601 int ret;
1602
1603 s->pi = mc->pi;
1604
1605 s->size = s->pi->sector_size * s->pi->n_sectors;
1606 s->dirty_page = -1;
1607
1608 if (s->blk) {
1609 uint64_t perm = BLK_PERM_CONSISTENT_READ |
1610 (blk_supports_write_perm(s->blk) ? BLK_PERM_WRITE : 0);
1611 ret = blk_set_perm(s->blk, perm, BLK_PERM_ALL, errp);
1612 if (ret < 0) {
1613 return;
1614 }
1615
1616 trace_m25p80_binding(s);
1617 s->storage = blk_blockalign(s->blk, s->size);
1618
1619 if (!blk_check_size_and_read_all(s->blk, s->storage, s->size, errp)) {
1620 return;
1621 }
1622 } else {
1623 trace_m25p80_binding_no_bdrv(s);
1624 s->storage = blk_blockalign(NULL, s->size);
1625 memset(s->storage, 0xFF, s->size);
1626 }
1627
1628 qdev_init_gpio_in_named(DEVICE(s),
1629 m25p80_write_protect_pin_irq_handler, "WP#", 1);
1630 }
1631
1632 static void m25p80_reset(DeviceState *d)
1633 {
1634 Flash *s = M25P80(d);
1635
1636 s->wp_level = true;
1637 s->status_register_write_disabled = false;
1638 s->block_protect0 = false;
1639 s->block_protect1 = false;
1640 s->block_protect2 = false;
1641 s->block_protect3 = false;
1642 s->top_bottom_bit = false;
1643
1644 reset_memory(s);
1645 }
1646
1647 static int m25p80_pre_save(void *opaque)
1648 {
1649 flash_sync_dirty((Flash *)opaque, -1);
1650
1651 return 0;
1652 }
1653
1654 static Property m25p80_properties[] = {
1655 /* This is default value for Micron flash */
1656 DEFINE_PROP_BOOL("write-enable", Flash, write_enable, false),
1657 DEFINE_PROP_UINT32("nonvolatile-cfg", Flash, nonvolatile_cfg, 0x8FFF),
1658 DEFINE_PROP_UINT8("spansion-cr1nv", Flash, spansion_cr1nv, 0x0),
1659 DEFINE_PROP_UINT8("spansion-cr2nv", Flash, spansion_cr2nv, 0x8),
1660 DEFINE_PROP_UINT8("spansion-cr3nv", Flash, spansion_cr3nv, 0x2),
1661 DEFINE_PROP_UINT8("spansion-cr4nv", Flash, spansion_cr4nv, 0x10),
1662 DEFINE_PROP_DRIVE("drive", Flash, blk),
1663 DEFINE_PROP_END_OF_LIST(),
1664 };
1665
1666 static int m25p80_pre_load(void *opaque)
1667 {
1668 Flash *s = (Flash *)opaque;
1669
1670 s->data_read_loop = false;
1671 return 0;
1672 }
1673
1674 static bool m25p80_data_read_loop_needed(void *opaque)
1675 {
1676 Flash *s = (Flash *)opaque;
1677
1678 return s->data_read_loop;
1679 }
1680
1681 static const VMStateDescription vmstate_m25p80_data_read_loop = {
1682 .name = "m25p80/data_read_loop",
1683 .version_id = 1,
1684 .minimum_version_id = 1,
1685 .needed = m25p80_data_read_loop_needed,
1686 .fields = (VMStateField[]) {
1687 VMSTATE_BOOL(data_read_loop, Flash),
1688 VMSTATE_END_OF_LIST()
1689 }
1690 };
1691
1692 static bool m25p80_aai_enable_needed(void *opaque)
1693 {
1694 Flash *s = (Flash *)opaque;
1695
1696 return s->aai_enable;
1697 }
1698
1699 static const VMStateDescription vmstate_m25p80_aai_enable = {
1700 .name = "m25p80/aai_enable",
1701 .version_id = 1,
1702 .minimum_version_id = 1,
1703 .needed = m25p80_aai_enable_needed,
1704 .fields = (VMStateField[]) {
1705 VMSTATE_BOOL(aai_enable, Flash),
1706 VMSTATE_END_OF_LIST()
1707 }
1708 };
1709
1710 static bool m25p80_wp_level_srwd_needed(void *opaque)
1711 {
1712 Flash *s = (Flash *)opaque;
1713
1714 return !s->wp_level || s->status_register_write_disabled;
1715 }
1716
1717 static const VMStateDescription vmstate_m25p80_write_protect = {
1718 .name = "m25p80/write_protect",
1719 .version_id = 1,
1720 .minimum_version_id = 1,
1721 .needed = m25p80_wp_level_srwd_needed,
1722 .fields = (VMStateField[]) {
1723 VMSTATE_BOOL(wp_level, Flash),
1724 VMSTATE_BOOL(status_register_write_disabled, Flash),
1725 VMSTATE_END_OF_LIST()
1726 }
1727 };
1728
1729 static bool m25p80_block_protect_needed(void *opaque)
1730 {
1731 Flash *s = (Flash *)opaque;
1732
1733 return s->block_protect0 ||
1734 s->block_protect1 ||
1735 s->block_protect2 ||
1736 s->block_protect3 ||
1737 s->top_bottom_bit;
1738 }
1739
1740 static const VMStateDescription vmstate_m25p80_block_protect = {
1741 .name = "m25p80/block_protect",
1742 .version_id = 1,
1743 .minimum_version_id = 1,
1744 .needed = m25p80_block_protect_needed,
1745 .fields = (VMStateField[]) {
1746 VMSTATE_BOOL(block_protect0, Flash),
1747 VMSTATE_BOOL(block_protect1, Flash),
1748 VMSTATE_BOOL(block_protect2, Flash),
1749 VMSTATE_BOOL(block_protect3, Flash),
1750 VMSTATE_BOOL(top_bottom_bit, Flash),
1751 VMSTATE_END_OF_LIST()
1752 }
1753 };
1754
1755 static const VMStateDescription vmstate_m25p80 = {
1756 .name = "m25p80",
1757 .version_id = 0,
1758 .minimum_version_id = 0,
1759 .pre_save = m25p80_pre_save,
1760 .pre_load = m25p80_pre_load,
1761 .fields = (VMStateField[]) {
1762 VMSTATE_UINT8(state, Flash),
1763 VMSTATE_UINT8_ARRAY(data, Flash, M25P80_INTERNAL_DATA_BUFFER_SZ),
1764 VMSTATE_UINT32(len, Flash),
1765 VMSTATE_UINT32(pos, Flash),
1766 VMSTATE_UINT8(needed_bytes, Flash),
1767 VMSTATE_UINT8(cmd_in_progress, Flash),
1768 VMSTATE_UINT32(cur_addr, Flash),
1769 VMSTATE_BOOL(write_enable, Flash),
1770 VMSTATE_BOOL(reset_enable, Flash),
1771 VMSTATE_UINT8(ear, Flash),
1772 VMSTATE_BOOL(four_bytes_address_mode, Flash),
1773 VMSTATE_UINT32(nonvolatile_cfg, Flash),
1774 VMSTATE_UINT32(volatile_cfg, Flash),
1775 VMSTATE_UINT32(enh_volatile_cfg, Flash),
1776 VMSTATE_BOOL(quad_enable, Flash),
1777 VMSTATE_UINT8(spansion_cr1nv, Flash),
1778 VMSTATE_UINT8(spansion_cr2nv, Flash),
1779 VMSTATE_UINT8(spansion_cr3nv, Flash),
1780 VMSTATE_UINT8(spansion_cr4nv, Flash),
1781 VMSTATE_END_OF_LIST()
1782 },
1783 .subsections = (const VMStateDescription * []) {
1784 &vmstate_m25p80_data_read_loop,
1785 &vmstate_m25p80_aai_enable,
1786 &vmstate_m25p80_write_protect,
1787 &vmstate_m25p80_block_protect,
1788 NULL
1789 }
1790 };
1791
1792 static void m25p80_class_init(ObjectClass *klass, void *data)
1793 {
1794 DeviceClass *dc = DEVICE_CLASS(klass);
1795 SSIPeripheralClass *k = SSI_PERIPHERAL_CLASS(klass);
1796 M25P80Class *mc = M25P80_CLASS(klass);
1797
1798 k->realize = m25p80_realize;
1799 k->transfer = m25p80_transfer8;
1800 k->set_cs = m25p80_cs;
1801 k->cs_polarity = SSI_CS_LOW;
1802 dc->vmsd = &vmstate_m25p80;
1803 device_class_set_props(dc, m25p80_properties);
1804 dc->reset = m25p80_reset;
1805 mc->pi = data;
1806 }
1807
1808 static const TypeInfo m25p80_info = {
1809 .name = TYPE_M25P80,
1810 .parent = TYPE_SSI_PERIPHERAL,
1811 .instance_size = sizeof(Flash),
1812 .class_size = sizeof(M25P80Class),
1813 .abstract = true,
1814 };
1815
1816 static void m25p80_register_types(void)
1817 {
1818 int i;
1819
1820 type_register_static(&m25p80_info);
1821 for (i = 0; i < ARRAY_SIZE(known_devices); ++i) {
1822 TypeInfo ti = {
1823 .name = known_devices[i].part_name,
1824 .parent = TYPE_M25P80,
1825 .class_init = m25p80_class_init,
1826 .class_data = (void *)&known_devices[i],
1827 };
1828 type_register(&ti);
1829 }
1830 }
1831
1832 type_init(m25p80_register_types)
armbru's QEMU hackery