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>
17 static int dfu_get_medium_size_sf(struct dfu_entity *dfu, u64 *size)
19 *size = dfu->data.sf.size;
24 static int dfu_read_medium_sf(struct dfu_entity *dfu, u64 offset, void *buf,
27 return spi_flash_read(dfu->data.sf.dev, dfu->data.sf.start + offset,
31 static u64 find_sector(struct dfu_entity *dfu, u64 start, u64 offset)
33 return (lldiv((start + offset), dfu->data.sf.dev->sector_size)) *
34 dfu->data.sf.dev->sector_size;
37 static int dfu_write_medium_sf(struct dfu_entity *dfu,
38 u64 offset, void *buf, long *len)
42 ret = spi_flash_erase(dfu->data.sf.dev,
43 find_sector(dfu, dfu->data.sf.start, offset),
44 dfu->data.sf.dev->sector_size);
48 ret = spi_flash_write(dfu->data.sf.dev, dfu->data.sf.start + offset,
56 static int dfu_flush_medium_sf(struct dfu_entity *dfu)
60 if (!CONFIG_IS_ENABLED(DFU_SF_PART) || !dfu->data.sf.ubi)
63 /* in case of ubi partition, erase rest of the partition */
64 off = find_sector(dfu, dfu->data.sf.start, dfu->offset);
65 /* last write ended with unaligned length jump to next */
66 if (off != dfu->data.sf.start + dfu->offset)
67 off += dfu->data.sf.dev->sector_size;
68 length = dfu->data.sf.start + dfu->data.sf.size - off;
70 return spi_flash_erase(dfu->data.sf.dev, off, length);
75 static unsigned int dfu_polltimeout_sf(struct dfu_entity *dfu)
78 * Currently, Poll Timeout != 0 is only needed on nand
79 * ubi partition, as sectors which are not used need
82 if (CONFIG_IS_ENABLED(DFU_SF_PART) && dfu->data.sf.ubi)
83 return DFU_MANIFEST_POLL_TIMEOUT;
85 return DFU_DEFAULT_POLL_TIMEOUT;
88 static void dfu_free_entity_sf(struct dfu_entity *dfu)
91 * In the DM case it is not necessary to free the SPI device.
92 * For the non-DM case we must ensure that the the SPI device is only
95 if (!CONFIG_IS_ENABLED(DM_SPI_FLASH)) {
96 struct spi_flash *dev = dfu->data.sf.dev;
100 dfu->data.sf.dev = NULL;
101 list_for_each_entry(dfu, &dfu_list, list) {
102 if (dfu->data.sf.dev == dev)
103 dfu->data.sf.dev = NULL;
109 static struct spi_flash *parse_dev(char *devstr)
113 unsigned int speed = CONFIG_SF_DEFAULT_SPEED;
114 unsigned int mode = CONFIG_SF_DEFAULT_MODE;
116 struct spi_flash *dev;
118 s = strsep(&devstr, ":");
119 if (!s || !*s || (bus = simple_strtoul(s, &endp, 0), *endp)) {
120 printf("Invalid SPI bus %s\n", s);
124 s = strsep(&devstr, ":");
125 if (!s || !*s || (cs = simple_strtoul(s, &endp, 0), *endp)) {
126 printf("Invalid SPI chip-select %s\n", s);
130 s = strsep(&devstr, ":");
132 speed = simple_strtoul(s, &endp, 0);
133 if (*endp || !speed) {
134 printf("Invalid SPI speed %s\n", s);
139 s = strsep(&devstr, ":");
141 mode = simple_strtoul(s, &endp, 0);
142 if (*endp || mode > 3) {
143 printf("Invalid SPI mode %s\n", s);
148 dev = spi_flash_probe(bus, cs, speed, mode);
150 printf("Failed to create SPI flash at %u:%u:%u:%u\n",
151 bus, cs, speed, mode);
158 int dfu_fill_entity_sf(struct dfu_entity *dfu, char *devstr, char *s)
161 char *devstr_bkup = strdup(devstr);
163 dfu->data.sf.dev = parse_dev(devstr_bkup);
165 if (!dfu->data.sf.dev)
168 dfu->dev_type = DFU_DEV_SF;
169 dfu->max_buf_size = dfu->data.sf.dev->sector_size;
171 st = strsep(&s, " ");
172 if (!strcmp(st, "raw")) {
173 dfu->layout = DFU_RAW_ADDR;
174 dfu->data.sf.start = hextoul(s, &s);
176 dfu->data.sf.size = hextoul(s, &s);
177 } else if (CONFIG_IS_ENABLED(DFU_SF_PART) &&
178 (!strcmp(st, "part") || !strcmp(st, "partubi"))) {
180 struct mtd_device *mtd_dev;
182 struct part_info *pi;
185 dfu->layout = DFU_RAW_ADDR;
187 dev = dectoul(s, &s);
189 part = dectoul(s, &s);
191 sprintf(mtd_id, "%s%d,%d", "nor", dev, part - 1);
192 printf("using id '%s'\n", mtd_id);
196 ret = find_dev_and_part(mtd_id, &mtd_dev, &part_num, &pi);
198 printf("Could not locate '%s'\n", mtd_id);
201 dfu->data.sf.start = pi->offset;
202 dfu->data.sf.size = pi->size;
203 if (!strcmp(st, "partubi"))
204 dfu->data.sf.ubi = 1;
206 printf("%s: Memory layout (%s) not supported!\n", __func__, st);
207 spi_flash_free(dfu->data.sf.dev);
211 dfu->get_medium_size = dfu_get_medium_size_sf;
212 dfu->read_medium = dfu_read_medium_sf;
213 dfu->write_medium = dfu_write_medium_sf;
214 dfu->flush_medium = dfu_flush_medium_sf;
215 dfu->poll_timeout = dfu_polltimeout_sf;
216 dfu->free_entity = dfu_free_entity_sf;