1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (c) 2014, NVIDIA CORPORATION. All rights reserved.
13 #include <spi_flash.h>
14 #include <jffs2/load_kernel.h>
15 #include <linux/mtd/mtd.h>
16 #include <linux/ctype.h>
18 static int dfu_get_medium_size_sf(struct dfu_entity *dfu, u64 *size)
20 *size = dfu->data.sf.size;
25 static int dfu_read_medium_sf(struct dfu_entity *dfu, u64 offset, void *buf,
31 if (seglen > (16 << 20))
34 ret = spi_flash_read(dfu->data.sf.dev, dfu->data.sf.start + offset,
42 static u64 find_sector(struct dfu_entity *dfu, u64 start, u64 offset)
44 return (lldiv((start + offset), dfu->data.sf.dev->sector_size)) *
45 dfu->data.sf.dev->sector_size;
48 static int dfu_write_medium_sf(struct dfu_entity *dfu,
49 u64 offset, void *buf, long *len)
53 ret = spi_flash_erase(dfu->data.sf.dev,
54 find_sector(dfu, dfu->data.sf.start, offset),
55 dfu->data.sf.dev->sector_size);
59 ret = spi_flash_write(dfu->data.sf.dev, dfu->data.sf.start + offset,
67 static int dfu_flush_medium_sf(struct dfu_entity *dfu)
71 if (!CONFIG_IS_ENABLED(DFU_SF_PART) || !dfu->data.sf.ubi)
74 /* in case of ubi partition, erase rest of the partition */
75 off = find_sector(dfu, dfu->data.sf.start, dfu->offset);
76 /* last write ended with unaligned length jump to next */
77 if (off != dfu->data.sf.start + dfu->offset)
78 off += dfu->data.sf.dev->sector_size;
79 length = dfu->data.sf.start + dfu->data.sf.size - off;
81 return spi_flash_erase(dfu->data.sf.dev, off, length);
86 static unsigned int dfu_polltimeout_sf(struct dfu_entity *dfu)
89 * Currently, Poll Timeout != 0 is only needed on nand
90 * ubi partition, as sectors which are not used need
93 if (CONFIG_IS_ENABLED(DFU_SF_PART) && dfu->data.sf.ubi)
94 return DFU_MANIFEST_POLL_TIMEOUT;
96 return DFU_DEFAULT_POLL_TIMEOUT;
99 static void dfu_free_entity_sf(struct dfu_entity *dfu)
102 * In the DM case it is not necessary to free the SPI device.
103 * For the non-DM case we must ensure that the the SPI device is only
106 if (!CONFIG_IS_ENABLED(DM_SPI_FLASH)) {
107 struct spi_flash *dev = dfu->data.sf.dev;
111 dfu->data.sf.dev = NULL;
112 list_for_each_entry(dfu, &dfu_list, list) {
113 if (dfu->data.sf.dev == dev)
114 dfu->data.sf.dev = NULL;
120 static struct spi_flash *parse_dev(char *devstr)
124 unsigned int speed = CONFIG_SF_DEFAULT_SPEED;
125 unsigned int mode = CONFIG_SF_DEFAULT_MODE;
127 struct spi_flash *dev;
129 s = strsep(&devstr, ":");
130 if (!s || !*s || (bus = simple_strtoul(s, &endp, 0), *endp)) {
131 printf("Invalid SPI bus %s\n", s);
135 s = strsep(&devstr, ":");
136 if (!s || !*s || (cs = simple_strtoul(s, &endp, 0), *endp)) {
137 printf("Invalid SPI chip-select %s\n", s);
141 s = strsep(&devstr, ":");
143 speed = simple_strtoul(s, &endp, 0);
144 if (*endp || !speed) {
145 printf("Invalid SPI speed %s\n", s);
150 s = strsep(&devstr, ":");
152 mode = simple_strtoul(s, &endp, 0);
153 if (*endp || mode > 3) {
154 printf("Invalid SPI mode %s\n", s);
159 dev = spi_flash_probe(bus, cs, speed, mode);
161 printf("Failed to create SPI flash at %u:%u:%u:%u\n",
162 bus, cs, speed, mode);
169 int dfu_fill_entity_sf(struct dfu_entity *dfu, char *devstr, char **argv, int argc)
172 char *devstr_bkup = strdup(devstr);
174 dfu->data.sf.dev = parse_dev(devstr_bkup);
176 if (!dfu->data.sf.dev)
179 dfu->dev_type = DFU_DEV_SF;
180 dfu->max_buf_size = dfu->data.sf.dev->sector_size;
184 if (!strcmp(argv[0], "raw")) {
185 dfu->layout = DFU_RAW_ADDR;
186 dfu->data.sf.start = hextoul(argv[1], &s);
189 dfu->data.sf.size = hextoul(argv[2], &s);
192 } else if (CONFIG_IS_ENABLED(DFU_SF_PART) &&
193 (!strcmp(argv[0], "part") || !strcmp(argv[0], "partubi"))) {
195 struct mtd_device *mtd_dev;
197 struct part_info *pi;
200 dfu->layout = DFU_RAW_ADDR;
202 dev = dectoul(argv[1], &s);
205 part = dectoul(argv[2], &s);
209 sprintf(mtd_id, "%s%d,%d", "nor", dev, part - 1);
210 printf("using id '%s'\n", mtd_id);
214 ret = find_dev_and_part(mtd_id, &mtd_dev, &part_num, &pi);
216 printf("Could not locate '%s'\n", mtd_id);
219 dfu->data.sf.start = pi->offset;
220 dfu->data.sf.size = pi->size;
221 if (!strcmp(argv[0], "partubi"))
222 dfu->data.sf.ubi = 1;
224 printf("%s: Memory layout (%s) not supported!\n", __func__, argv[0]);
225 spi_flash_free(dfu->data.sf.dev);
229 dfu->get_medium_size = dfu_get_medium_size_sf;
230 dfu->read_medium = dfu_read_medium_sf;
231 dfu->write_medium = dfu_write_medium_sf;
232 dfu->flush_medium = dfu_flush_medium_sf;
233 dfu->poll_timeout = dfu_polltimeout_sf;
234 dfu->free_entity = dfu_free_entity_sf;