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7#include <common.h>
8#include <console.h>
9#include <dm.h>
10#include <errno.h>
11#include <fdt_support.h>
12#include <flash.h>
13#include <mtd.h>
14#include <asm/io.h>
15
16DECLARE_GLOBAL_DATA_PTR;
17
18
19#define QUADSPI_SR_BP0 BIT(2)
20#define QUADSPI_SR_BP1 BIT(3)
21#define QUADSPI_SR_BP2 BIT(4)
22#define QUADSPI_SR_BP2_0 GENMASK(4, 2)
23#define QUADSPI_SR_BP3 BIT(6)
24#define QUADSPI_SR_TB BIT(5)
25
26
27
28
29#define QUADSPI_MEM_OP_BULK_ERASE 0x00000001
30#define QUADSPI_MEM_OP_SECTOR_ERASE 0x00000002
31#define QUADSPI_MEM_OP_SECTOR_PROTECT 0x00000003
32
33
34
35
36
37#define QUADSPI_ISR_ILLEGAL_ERASE BIT(0)
38#define QUADSPI_ISR_ILLEGAL_WRITE BIT(1)
39
40struct altera_qspi_regs {
41 u32 rd_status;
42 u32 rd_sid;
43 u32 rd_rdid;
44 u32 mem_op;
45 u32 isr;
46 u32 imr;
47 u32 chip_select;
48};
49
50struct altera_qspi_platdata {
51 struct altera_qspi_regs *regs;
52 void *base;
53 unsigned long size;
54};
55
56static uint flash_verbose;
57flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];
58
59static void altera_qspi_get_locked_range(struct mtd_info *mtd, loff_t *ofs,
60 uint64_t *len);
61
62void flash_print_info(flash_info_t *info)
63{
64 struct mtd_info *mtd = info->mtd;
65 loff_t ofs;
66 u64 len;
67
68 printf("Altera QSPI flash Size: %ld MB in %d Sectors\n",
69 info->size >> 20, info->sector_count);
70 altera_qspi_get_locked_range(mtd, &ofs, &len);
71 printf(" %08lX +%lX", info->start[0], info->size);
72 if (len) {
73 printf(", protected %08llX +%llX",
74 info->start[0] + ofs, len);
75 }
76 putc('\n');
77}
78
79void flash_set_verbose(uint v)
80{
81 flash_verbose = v;
82}
83
84int flash_erase(flash_info_t *info, int s_first, int s_last)
85{
86 struct mtd_info *mtd = info->mtd;
87 struct erase_info instr;
88 int ret;
89
90 memset(&instr, 0, sizeof(instr));
91 instr.mtd = mtd;
92 instr.addr = mtd->erasesize * s_first;
93 instr.len = mtd->erasesize * (s_last + 1 - s_first);
94 flash_set_verbose(1);
95 ret = mtd_erase(mtd, &instr);
96 flash_set_verbose(0);
97 if (ret)
98 return ERR_PROTECTED;
99
100 puts(" done\n");
101 return 0;
102}
103
104int write_buff(flash_info_t *info, uchar *src, ulong addr, ulong cnt)
105{
106 struct mtd_info *mtd = info->mtd;
107 struct udevice *dev = mtd->dev;
108 struct altera_qspi_platdata *pdata = dev_get_platdata(dev);
109 ulong base = (ulong)pdata->base;
110 loff_t to = addr - base;
111 size_t retlen;
112 int ret;
113
114 ret = mtd_write(mtd, to, cnt, &retlen, src);
115 if (ret)
116 return ERR_PROTECTED;
117
118 return 0;
119}
120
121unsigned long flash_init(void)
122{
123 struct udevice *dev;
124
125
126 for (uclass_first_device(UCLASS_MTD, &dev);
127 dev;
128 uclass_next_device(&dev)) {
129 }
130
131 return flash_info[0].size;
132}
133
134static int altera_qspi_erase(struct mtd_info *mtd, struct erase_info *instr)
135{
136 struct udevice *dev = mtd->dev;
137 struct altera_qspi_platdata *pdata = dev_get_platdata(dev);
138 struct altera_qspi_regs *regs = pdata->regs;
139 size_t addr = instr->addr;
140 size_t len = instr->len;
141 size_t end = addr + len;
142 u32 sect;
143 u32 stat;
144 u32 *flash, *last;
145
146 instr->state = MTD_ERASING;
147 addr &= ~(mtd->erasesize - 1);
148 while (addr < end) {
149 if (ctrlc()) {
150 if (flash_verbose)
151 putc('\n');
152 instr->fail_addr = MTD_FAIL_ADDR_UNKNOWN;
153 instr->state = MTD_ERASE_FAILED;
154 mtd_erase_callback(instr);
155 return -EIO;
156 }
157 flash = pdata->base + addr;
158 last = pdata->base + addr + mtd->erasesize;
159
160 while (flash < last) {
161 if (readl(flash) != 0xffffffff)
162 break;
163 flash++;
164 }
165 if (flash < last) {
166 sect = addr / mtd->erasesize;
167 sect <<= 8;
168 sect |= QUADSPI_MEM_OP_SECTOR_ERASE;
169 debug("erase %08x\n", sect);
170 writel(sect, ®s->mem_op);
171 stat = readl(®s->isr);
172 if (stat & QUADSPI_ISR_ILLEGAL_ERASE) {
173
174 debug("erase %08x fail %x\n", sect, stat);
175 writel(stat, ®s->isr);
176 instr->fail_addr = addr;
177 instr->state = MTD_ERASE_FAILED;
178 mtd_erase_callback(instr);
179 return -EIO;
180 }
181 if (flash_verbose)
182 putc('.');
183 } else {
184 if (flash_verbose)
185 putc(',');
186 }
187 addr += mtd->erasesize;
188 }
189 instr->state = MTD_ERASE_DONE;
190 mtd_erase_callback(instr);
191
192 return 0;
193}
194
195static int altera_qspi_read(struct mtd_info *mtd, loff_t from, size_t len,
196 size_t *retlen, u_char *buf)
197{
198 struct udevice *dev = mtd->dev;
199 struct altera_qspi_platdata *pdata = dev_get_platdata(dev);
200
201 memcpy_fromio(buf, pdata->base + from, len);
202 *retlen = len;
203
204 return 0;
205}
206
207static int altera_qspi_write(struct mtd_info *mtd, loff_t to, size_t len,
208 size_t *retlen, const u_char *buf)
209{
210 struct udevice *dev = mtd->dev;
211 struct altera_qspi_platdata *pdata = dev_get_platdata(dev);
212 struct altera_qspi_regs *regs = pdata->regs;
213 u32 stat;
214
215 memcpy_toio(pdata->base + to, buf, len);
216
217 stat = readl(®s->isr);
218 if (stat & QUADSPI_ISR_ILLEGAL_WRITE) {
219
220 debug("write fail %x\n", stat);
221 writel(stat, ®s->isr);
222 return -EIO;
223 }
224 *retlen = len;
225
226 return 0;
227}
228
229static void altera_qspi_sync(struct mtd_info *mtd)
230{
231}
232
233static void altera_qspi_get_locked_range(struct mtd_info *mtd, loff_t *ofs,
234 uint64_t *len)
235{
236 struct udevice *dev = mtd->dev;
237 struct altera_qspi_platdata *pdata = dev_get_platdata(dev);
238 struct altera_qspi_regs *regs = pdata->regs;
239 int shift0 = ffs(QUADSPI_SR_BP2_0) - 1;
240 int shift3 = ffs(QUADSPI_SR_BP3) - 1 - 3;
241 u32 stat = readl(®s->rd_status);
242 unsigned pow = ((stat & QUADSPI_SR_BP2_0) >> shift0) |
243 ((stat & QUADSPI_SR_BP3) >> shift3);
244
245 *ofs = 0;
246 *len = 0;
247 if (pow) {
248 *len = mtd->erasesize << (pow - 1);
249 if (*len > mtd->size)
250 *len = mtd->size;
251 if (!(stat & QUADSPI_SR_TB))
252 *ofs = mtd->size - *len;
253 }
254}
255
256static int altera_qspi_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
257{
258 struct udevice *dev = mtd->dev;
259 struct altera_qspi_platdata *pdata = dev_get_platdata(dev);
260 struct altera_qspi_regs *regs = pdata->regs;
261 u32 sector_start, sector_end;
262 u32 num_sectors;
263 u32 mem_op;
264 u32 sr_bp;
265 u32 sr_tb;
266
267 num_sectors = mtd->size / mtd->erasesize;
268 sector_start = ofs / mtd->erasesize;
269 sector_end = (ofs + len) / mtd->erasesize;
270
271 if (sector_start >= num_sectors / 2) {
272 sr_bp = fls(num_sectors - 1 - sector_start) + 1;
273 sr_tb = 0;
274 } else if (sector_end < num_sectors / 2) {
275 sr_bp = fls(sector_end) + 1;
276 sr_tb = 1;
277 } else {
278 sr_bp = 15;
279 sr_tb = 0;
280 }
281
282 mem_op = (sr_tb << 12) | (sr_bp << 8);
283 mem_op |= QUADSPI_MEM_OP_SECTOR_PROTECT;
284 debug("lock %08x\n", mem_op);
285 writel(mem_op, ®s->mem_op);
286
287 return 0;
288}
289
290static int altera_qspi_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
291{
292 struct udevice *dev = mtd->dev;
293 struct altera_qspi_platdata *pdata = dev_get_platdata(dev);
294 struct altera_qspi_regs *regs = pdata->regs;
295 u32 mem_op;
296
297 mem_op = QUADSPI_MEM_OP_SECTOR_PROTECT;
298 debug("unlock %08x\n", mem_op);
299 writel(mem_op, ®s->mem_op);
300
301 return 0;
302}
303
304static int altera_qspi_probe(struct udevice *dev)
305{
306 struct altera_qspi_platdata *pdata = dev_get_platdata(dev);
307 struct altera_qspi_regs *regs = pdata->regs;
308 unsigned long base = (unsigned long)pdata->base;
309 struct mtd_info *mtd;
310 flash_info_t *flash = &flash_info[0];
311 u32 rdid;
312 int i;
313
314 rdid = readl(®s->rd_rdid);
315 debug("rdid %x\n", rdid);
316
317 mtd = dev_get_uclass_priv(dev);
318 mtd->dev = dev;
319 mtd->name = "nor0";
320 mtd->type = MTD_NORFLASH;
321 mtd->flags = MTD_CAP_NORFLASH;
322 mtd->size = 1 << ((rdid & 0xff) - 6);
323 mtd->writesize = 1;
324 mtd->writebufsize = mtd->writesize;
325 mtd->_erase = altera_qspi_erase;
326 mtd->_read = altera_qspi_read;
327 mtd->_write = altera_qspi_write;
328 mtd->_sync = altera_qspi_sync;
329 mtd->_lock = altera_qspi_lock;
330 mtd->_unlock = altera_qspi_unlock;
331 mtd->numeraseregions = 0;
332 mtd->erasesize = 0x10000;
333 if (add_mtd_device(mtd))
334 return -ENOMEM;
335
336 flash->mtd = mtd;
337 flash->size = mtd->size;
338 flash->sector_count = mtd->size / mtd->erasesize;
339 flash->flash_id = rdid;
340 flash->start[0] = base;
341 for (i = 1; i < flash->sector_count; i++)
342 flash->start[i] = flash->start[i - 1] + mtd->erasesize;
343 gd->bd->bi_flashstart = base;
344
345 return 0;
346}
347
348static int altera_qspi_ofdata_to_platdata(struct udevice *dev)
349{
350 struct altera_qspi_platdata *pdata = dev_get_platdata(dev);
351 void *blob = (void *)gd->fdt_blob;
352 int node = dev->of_offset;
353 const char *list, *end;
354 const fdt32_t *cell;
355 void *base;
356 unsigned long addr, size;
357 int parent, addrc, sizec;
358 int len, idx;
359
360
361
362
363
364 parent = fdt_parent_offset(blob, node);
365 of_bus_default_count_cells(blob, parent, &addrc, &sizec);
366 list = fdt_getprop(blob, node, "reg-names", &len);
367 if (!list)
368 return -ENOENT;
369 end = list + len;
370 cell = fdt_getprop(blob, node, "reg", &len);
371 if (!cell)
372 return -ENOENT;
373 idx = 0;
374 while (list < end) {
375 addr = fdt_translate_address((void *)blob,
376 node, cell + idx);
377 size = fdt_addr_to_cpu(cell[idx + addrc]);
378 base = map_physmem(addr, size, MAP_NOCACHE);
379 len = strlen(list);
380 if (strcmp(list, "avl_csr") == 0) {
381 pdata->regs = base;
382 } else if (strcmp(list, "avl_mem") == 0) {
383 pdata->base = base;
384 pdata->size = size;
385 }
386 idx += addrc + sizec;
387 list += (len + 1);
388 }
389
390 return 0;
391}
392
393static const struct udevice_id altera_qspi_ids[] = {
394 { .compatible = "altr,quadspi-1.0" },
395 {}
396};
397
398U_BOOT_DRIVER(altera_qspi) = {
399 .name = "altera_qspi",
400 .id = UCLASS_MTD,
401 .of_match = altera_qspi_ids,
402 .ofdata_to_platdata = altera_qspi_ofdata_to_platdata,
403 .platdata_auto_alloc_size = sizeof(struct altera_qspi_platdata),
404 .probe = altera_qspi_probe,
405};
406
