ARM: rmobile: Merge prior-stage firmware DT fragment into U-Boot DT on Gen3
[oweals/u-boot.git] / drivers / dfu / dfu_nand.c
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * dfu_nand.c -- DFU for NAND routines.
4  *
5  * Copyright (C) 2012-2013 Texas Instruments, Inc.
6  *
7  * Based on dfu_mmc.c which is:
8  * Copyright (C) 2012 Samsung Electronics
9  * author: Lukasz Majewski <l.majewski@samsung.com>
10  */
11
12 #include <common.h>
13 #include <log.h>
14 #include <malloc.h>
15 #include <errno.h>
16 #include <div64.h>
17 #include <dfu.h>
18 #include <linux/mtd/mtd.h>
19 #include <jffs2/load_kernel.h>
20 #include <nand.h>
21
22 static int nand_block_op(enum dfu_op op, struct dfu_entity *dfu,
23                         u64 offset, void *buf, long *len)
24 {
25         loff_t start, lim;
26         size_t count, actual;
27         int ret;
28         struct mtd_info *mtd;
29
30         /* if buf == NULL return total size of the area */
31         if (buf == NULL) {
32                 *len = dfu->data.nand.size;
33                 return 0;
34         }
35
36         start = dfu->data.nand.start + offset + dfu->bad_skip;
37         lim = dfu->data.nand.start + dfu->data.nand.size - start;
38         count = *len;
39
40         mtd = get_nand_dev_by_index(nand_curr_device);
41
42         if (nand_curr_device < 0 ||
43             nand_curr_device >= CONFIG_SYS_MAX_NAND_DEVICE ||
44             !mtd) {
45                 printf("%s: invalid nand device\n", __func__);
46                 return -1;
47         }
48
49         if (op == DFU_OP_READ) {
50                 ret = nand_read_skip_bad(mtd, start, &count, &actual,
51                                          lim, buf);
52         } else {
53                 nand_erase_options_t opts;
54                 int write_flags = WITH_WR_VERIFY;
55
56                 memset(&opts, 0, sizeof(opts));
57                 opts.offset = start;
58                 opts.length = count;
59                 opts.spread = 1;
60                 opts.quiet = 1;
61                 opts.lim = lim;
62                 /* first erase */
63                 ret = nand_erase_opts(mtd, &opts);
64                 if (ret)
65                         return ret;
66                 /* then write */
67 #ifdef CONFIG_DFU_NAND_TRIMFFS
68                 if (dfu->data.nand.ubi)
69                         write_flags |= WITH_DROP_FFS;
70 #endif
71                 ret = nand_write_skip_bad(mtd, start, &count, &actual,
72                                           lim, buf, write_flags);
73         }
74
75         if (ret != 0) {
76                 printf("%s: nand_%s_skip_bad call failed at %llx!\n",
77                        __func__, op == DFU_OP_READ ? "read" : "write",
78                        start);
79                 return ret;
80         }
81
82         /*
83          * Find out where we stopped writing data.  This can be deeper into
84          * the NAND than we expected due to having to skip bad blocks.  So
85          * we must take this into account for the next write, if any.
86          */
87         if (actual > count)
88                 dfu->bad_skip += actual - count;
89
90         return ret;
91 }
92
93 static inline int nand_block_write(struct dfu_entity *dfu,
94                 u64 offset, void *buf, long *len)
95 {
96         return nand_block_op(DFU_OP_WRITE, dfu, offset, buf, len);
97 }
98
99 static inline int nand_block_read(struct dfu_entity *dfu,
100                 u64 offset, void *buf, long *len)
101 {
102         return nand_block_op(DFU_OP_READ, dfu, offset, buf, len);
103 }
104
105 static int dfu_write_medium_nand(struct dfu_entity *dfu,
106                 u64 offset, void *buf, long *len)
107 {
108         int ret = -1;
109
110         switch (dfu->layout) {
111         case DFU_RAW_ADDR:
112                 ret = nand_block_write(dfu, offset, buf, len);
113                 break;
114         default:
115                 printf("%s: Layout (%s) not (yet) supported!\n", __func__,
116                        dfu_get_layout(dfu->layout));
117         }
118
119         return ret;
120 }
121
122 int dfu_get_medium_size_nand(struct dfu_entity *dfu, u64 *size)
123 {
124         *size = dfu->data.nand.size;
125
126         return 0;
127 }
128
129 static int dfu_read_medium_nand(struct dfu_entity *dfu, u64 offset, void *buf,
130                 long *len)
131 {
132         int ret = -1;
133
134         switch (dfu->layout) {
135         case DFU_RAW_ADDR:
136                 ret = nand_block_read(dfu, offset, buf, len);
137                 break;
138         default:
139                 printf("%s: Layout (%s) not (yet) supported!\n", __func__,
140                        dfu_get_layout(dfu->layout));
141         }
142
143         return ret;
144 }
145
146 static int dfu_flush_medium_nand(struct dfu_entity *dfu)
147 {
148         int ret = 0;
149         u64 off;
150
151         /* in case of ubi partition, erase rest of the partition */
152         if (dfu->data.nand.ubi) {
153                 struct mtd_info *mtd = get_nand_dev_by_index(nand_curr_device);
154                 nand_erase_options_t opts;
155
156                 if (nand_curr_device < 0 ||
157                     nand_curr_device >= CONFIG_SYS_MAX_NAND_DEVICE ||
158                     !mtd) {
159                         printf("%s: invalid nand device\n", __func__);
160                         return -1;
161                 }
162
163                 memset(&opts, 0, sizeof(opts));
164                 off = dfu->offset;
165                 if ((off & (mtd->erasesize - 1)) != 0) {
166                         /*
167                          * last write ended with unaligned length
168                          * sector is erased, jump to next
169                          */
170                         off = off & ~((mtd->erasesize - 1));
171                         off += mtd->erasesize;
172                 }
173                 opts.offset = dfu->data.nand.start + off +
174                                 dfu->bad_skip;
175                 opts.length = dfu->data.nand.start +
176                                 dfu->data.nand.size - opts.offset;
177                 ret = nand_erase_opts(mtd, &opts);
178                 if (ret != 0)
179                         printf("Failure erase: %d\n", ret);
180         }
181
182         return ret;
183 }
184
185 unsigned int dfu_polltimeout_nand(struct dfu_entity *dfu)
186 {
187         /*
188          * Currently, Poll Timeout != 0 is only needed on nand
189          * ubi partition, as the not used sectors need an erase
190          */
191         if (dfu->data.nand.ubi)
192                 return DFU_MANIFEST_POLL_TIMEOUT;
193
194         return DFU_DEFAULT_POLL_TIMEOUT;
195 }
196
197 int dfu_fill_entity_nand(struct dfu_entity *dfu, char *devstr, char *s)
198 {
199         char *st;
200         int ret, dev, part;
201
202         dfu->data.nand.ubi = 0;
203         dfu->dev_type = DFU_DEV_NAND;
204         st = strsep(&s, " ");
205         if (!strcmp(st, "raw")) {
206                 dfu->layout = DFU_RAW_ADDR;
207                 dfu->data.nand.start = simple_strtoul(s, &s, 16);
208                 s++;
209                 dfu->data.nand.size = simple_strtoul(s, &s, 16);
210         } else if ((!strcmp(st, "part")) || (!strcmp(st, "partubi"))) {
211                 char mtd_id[32];
212                 struct mtd_device *mtd_dev;
213                 u8 part_num;
214                 struct part_info *pi;
215
216                 dfu->layout = DFU_RAW_ADDR;
217
218                 dev = simple_strtoul(s, &s, 10);
219                 s++;
220                 part = simple_strtoul(s, &s, 10);
221
222                 sprintf(mtd_id, "%s%d,%d", "nand", dev, part - 1);
223                 debug("using id '%s'\n", mtd_id);
224
225                 mtdparts_init();
226
227                 ret = find_dev_and_part(mtd_id, &mtd_dev, &part_num, &pi);
228                 if (ret != 0) {
229                         printf("Could not locate '%s'\n", mtd_id);
230                         return -1;
231                 }
232
233                 dfu->data.nand.start = pi->offset;
234                 dfu->data.nand.size = pi->size;
235                 if (!strcmp(st, "partubi"))
236                         dfu->data.nand.ubi = 1;
237         } else {
238                 printf("%s: Memory layout (%s) not supported!\n", __func__, st);
239                 return -1;
240         }
241
242         dfu->get_medium_size = dfu_get_medium_size_nand;
243         dfu->read_medium = dfu_read_medium_nand;
244         dfu->write_medium = dfu_write_medium_nand;
245         dfu->flush_medium = dfu_flush_medium_nand;
246         dfu->poll_timeout = dfu_polltimeout_nand;
247
248         /* initial state */
249         dfu->inited = 0;
250
251         return 0;
252 }