summaryrefslogtreecommitdiff
path: root/src/drivers/spi/eon.c
blob: 2cdbdbbe8d667508095d09c7c3ed3ae3a9ca67dd (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
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
/*
 * This file is part of the coreboot project.
 *
 * 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 <console/console.h>
#include <commonlib/helpers.h>
#include <spi_flash.h>
#include <spi-generic.h>
#include <string.h>

#include "spi_flash_internal.h"

/* EN25*-specific commands */
#define CMD_EN25_WREN		0x06	/* Write Enable */
#define CMD_EN25_WRDI		0x04	/* Write Disable */
#define CMD_EN25_RDSR		0x05	/* Read Status Register */
#define CMD_EN25_WRSR		0x01	/* Write Status Register */
#define CMD_EN25_READ		0x03	/* Read Data Bytes */
#define CMD_EN25_FAST_READ	0x0b	/* Read Data Bytes at Higher Speed */
#define CMD_EN25_PP		0x02	/* Page Program */
#define CMD_EN25_SE		0x20	/* Sector Erase */
#define CMD_EN25_BE		0xd8	/* Block Erase */
#define CMD_EN25_DP		0xb9	/* Deep Power-down */
#define CMD_EN25_RES		0xab	/* Release from DP, and Read Signature */

#define EON_ID_EN25B80		0x2014
#define EON_ID_EN25B16		0x2015
#define EON_ID_EN25B32		0x2016
#define EON_ID_EN25B64		0x2017
#define EON_ID_EN25F80		0x3114
#define EON_ID_EN25F16		0x3115
#define EON_ID_EN25F32		0x3116
#define EON_ID_EN25F64		0x3117
#define EON_ID_EN25Q80		0x3014
#define EON_ID_EN25Q16		0x3015	/* Same as EN25D16 */
#define EON_ID_EN25Q32		0x3016	/* Same as EN25Q32A and EN25Q32B */
#define EON_ID_EN25Q64		0x3017
#define EON_ID_EN25Q128		0x3018
#define EON_ID_EN25QH16		0x7015
#define EON_ID_EN25QH32		0x7016
#define EON_ID_EN25QH64		0x7017
#define EON_ID_EN25QH128	0x7018
#define EON_ID_EN25S80		0x3814
#define EON_ID_EN25S16		0x3815
#define EON_ID_EN25S32		0x3816
#define EON_ID_EN25S64		0x3817

struct eon_spi_flash_params {
	u16 id;
	u16 page_size;
	u16 pages_per_sector;
	u16 sectors_per_block;
	u16 nr_sectors;
	const char *name;
};

static const struct eon_spi_flash_params eon_spi_flash_table[] = {
	{
		.id = EON_ID_EN25B80,
		.page_size = 256,
		.pages_per_sector = 16,
		.sectors_per_block = 16,
		.nr_sectors = 256,
		.name = "EN25B80",
	},
	{
		.id = EON_ID_EN25B16,
		.page_size = 256,
		.pages_per_sector = 16,
		.sectors_per_block = 16,
		.nr_sectors = 512,
		.name = "EN25B16",
	},
	{
		.id = EON_ID_EN25B32,
		.page_size = 256,
		.pages_per_sector = 16,
		.sectors_per_block = 16,
		.nr_sectors = 1024,
		.name = "EN25B32",
	},
	{
		.id = EON_ID_EN25B64,
		.page_size = 256,
		.pages_per_sector = 16,
		.sectors_per_block = 16,
		.nr_sectors = 2048,
		.name = "EN25B64",
	},
	{
		.id = EON_ID_EN25F80,
		.page_size = 256,
		.pages_per_sector = 16,
		.sectors_per_block = 16,
		.nr_sectors = 256,
		.name = "EN25F80",
	},
	{
		.id = EON_ID_EN25F16,
		.page_size = 256,
		.pages_per_sector = 16,
		.sectors_per_block = 16,
		.nr_sectors = 512,
		.name = "EN25F16",
	},
	{
		.id = EON_ID_EN25F32,
		.page_size = 256,
		.pages_per_sector = 16,
		.sectors_per_block = 16,
		.nr_sectors = 1024,
		.name = "EN25F32",
	},
	{
		.id = EON_ID_EN25F64,
		.page_size = 256,
		.pages_per_sector = 16,
		.sectors_per_block = 16,
		.nr_sectors = 2048,
		.name = "EN25F64",
	},
	{
		.id = EON_ID_EN25Q80,
		.page_size = 256,
		.pages_per_sector = 16,
		.sectors_per_block = 16,
		.nr_sectors = 256,
		.name = "EN25Q80(A)",
	},
	{
		.id = EON_ID_EN25Q16,
		.page_size = 256,
		.pages_per_sector = 16,
		.sectors_per_block = 16,
		.nr_sectors = 512,
		.name = "EN25Q16(D16)",
	},
	{
		.id = EON_ID_EN25Q32,
		.page_size = 256,
		.pages_per_sector = 16,
		.sectors_per_block = 16,
		.nr_sectors = 1024,
		.name = "EN25Q32(A/B)",
	},
	{
		.id = EON_ID_EN25Q64,
		.page_size = 256,
		.pages_per_sector = 16,
		.sectors_per_block = 16,
		.nr_sectors = 2048,
		.name = "EN25Q64",
	},
	{
		.id = EON_ID_EN25Q128,
		.page_size = 256,
		.pages_per_sector = 16,
		.sectors_per_block = 16,
		.nr_sectors = 4096,
		.name = "EN25Q128",
	},
	{
		.id = EON_ID_EN25QH16,
		.page_size = 256,
		.pages_per_sector = 16,
		.sectors_per_block = 16,
		.nr_sectors = 512,
		.name = "EN25QH16",
	},
	{
		.id = EON_ID_EN25QH32,
		.page_size = 256,
		.pages_per_sector = 16,
		.sectors_per_block = 16,
		.nr_sectors = 1024,
		.name = "EN25QH32",
	},
	{
		.id = EON_ID_EN25QH64,
		.page_size = 256,
		.pages_per_sector = 16,
		.sectors_per_block = 16,
		.nr_sectors = 2048,
		.name = "EN25QH64",
	},
	{
		.id = EON_ID_EN25QH128,
		.page_size = 256,
		.pages_per_sector = 16,
		.sectors_per_block = 16,
		.nr_sectors = 4096,
		.name = "EN25QH128",
	},
	{
		.id = EON_ID_EN25S80,
		.page_size = 256,
		.pages_per_sector = 16,
		.sectors_per_block = 16,
		.nr_sectors = 256,
		.name = "EN25S80",
	},
	{
		.id = EON_ID_EN25S16,
		.page_size = 256,
		.pages_per_sector = 16,
		.sectors_per_block = 16,
		.nr_sectors = 512,
		.name = "EN25S16",
	},
	{
		.id = EON_ID_EN25S32,
		.page_size = 256,
		.pages_per_sector = 16,
		.sectors_per_block = 16,
		.nr_sectors = 1024,
		.name = "EN25S32",
	},
	{
		.id = EON_ID_EN25S64,
		.page_size = 256,
		.pages_per_sector = 16,
		.sectors_per_block = 16,
		.nr_sectors = 2048,
		.name = "EN25S64",
	},
};

static int eon_write(const struct spi_flash *flash,
		     u32 offset, size_t len, const void *buf)
{
	unsigned long byte_addr;
	unsigned long page_size;
	size_t chunk_len;
	size_t actual;
	int ret = 0;
	u8 cmd[4];

	page_size = flash->page_size;

	for (actual = 0; actual < len; actual += chunk_len) {
		byte_addr = offset % page_size;
		chunk_len = MIN(len - actual, page_size - byte_addr);
		chunk_len = spi_crop_chunk(&flash->spi, sizeof(cmd), chunk_len);

		ret = spi_flash_cmd(&flash->spi, CMD_EN25_WREN, NULL, 0);
		if (ret < 0) {
			printk(BIOS_WARNING, "SF: Enabling Write failed\n");
			goto out;
		}

		cmd[0] = CMD_EN25_PP;
		cmd[1] = (offset >> 16) & 0xff;
		cmd[2] = (offset >> 8) & 0xff;
		cmd[3] = offset & 0xff;

#if CONFIG(DEBUG_SPI_FLASH)
		printk(BIOS_SPEW,
		    "PP: %p => cmd = { 0x%02x 0x%02x%02x%02x } chunk_len = %zu\n",
		     buf + actual, cmd[0], cmd[1], cmd[2], cmd[3], chunk_len);
#endif

		ret = spi_flash_cmd_write(&flash->spi, cmd, sizeof(cmd),
					  buf + actual, chunk_len);
		if (ret < 0) {
			printk(BIOS_WARNING, "SF: EON Page Program failed\n");
			goto out;
		}

		ret = spi_flash_cmd_wait_ready(flash,
				SPI_FLASH_PROG_TIMEOUT_MS);
		if (ret) {
			printk(BIOS_WARNING, "SF: EON Page Program timeout\n");
			goto out;
		}

		offset += chunk_len;
	}

#if CONFIG(DEBUG_SPI_FLASH)
	printk(BIOS_SPEW, "SF: EON: Successfully programmed %zu bytes @ %#x\n",
	       len, (unsigned int)(offset - len));
#endif

out:
	return ret;
}

static const struct spi_flash_ops spi_flash_ops = {
	.write = eon_write,
	.erase = spi_flash_cmd_erase,
	.status = spi_flash_cmd_status,
};

int spi_flash_probe_eon(const struct spi_slave *spi, u8 *idcode,
			struct spi_flash *flash)
{
	const struct eon_spi_flash_params *params;
	unsigned int i;

	for (i = 0; i < ARRAY_SIZE(eon_spi_flash_table); ++i) {
		params = &eon_spi_flash_table[i];
		if (params->id == ((idcode[1] << 8) | idcode[2]))
			break;
	}

	if (i == ARRAY_SIZE(eon_spi_flash_table)) {
		printk(BIOS_WARNING, "SF: Unsupported EON ID %#02x%02x\n",
		       idcode[1], idcode[2]);
		return -1;
	}

	memcpy(&flash->spi, spi, sizeof(*spi));

	flash->name = params->name;
	flash->page_size = params->page_size;
	flash->sector_size = params->page_size * params->pages_per_sector;
	flash->size = flash->sector_size * params->nr_sectors;
	flash->erase_cmd = CMD_EN25_SE;
	flash->status_cmd = CMD_EN25_RDSR;

	flash->ops = &spi_flash_ops;

	return 0;
}