| /* |
| * Copyright (c) 2014, NVIDIA CORPORATION. All rights reserved. |
| * |
| * SPDX-License-Identifier: GPL-2.0+ |
| */ |
| |
| #include <common.h> |
| #include <malloc.h> |
| #include <errno.h> |
| #include <div64.h> |
| #include <dfu.h> |
| #include <spi.h> |
| #include <spi_flash.h> |
| |
| static long dfu_get_medium_size_sf(struct dfu_entity *dfu) |
| { |
| return dfu->data.sf.size; |
| } |
| |
| static int dfu_read_medium_sf(struct dfu_entity *dfu, u64 offset, void *buf, |
| long *len) |
| { |
| return spi_flash_read(dfu->data.sf.dev, offset, *len, buf); |
| } |
| |
| static int dfu_write_medium_sf(struct dfu_entity *dfu, |
| u64 offset, void *buf, long *len) |
| { |
| int ret; |
| |
| ret = spi_flash_erase(dfu->data.sf.dev, offset, *len); |
| if (ret) |
| return ret; |
| |
| ret = spi_flash_write(dfu->data.sf.dev, offset, *len, buf); |
| if (ret) |
| return ret; |
| |
| return 0; |
| } |
| |
| static int dfu_flush_medium_sf(struct dfu_entity *dfu) |
| { |
| return 0; |
| } |
| |
| static unsigned int dfu_polltimeout_sf(struct dfu_entity *dfu) |
| { |
| return DFU_DEFAULT_POLL_TIMEOUT; |
| } |
| |
| static void dfu_free_entity_sf(struct dfu_entity *dfu) |
| { |
| spi_flash_free(dfu->data.sf.dev); |
| } |
| |
| static struct spi_flash *parse_dev(char *devstr) |
| { |
| unsigned int bus; |
| unsigned int cs; |
| unsigned int speed = CONFIG_SF_DEFAULT_SPEED; |
| unsigned int mode = CONFIG_SF_DEFAULT_MODE; |
| char *s, *endp; |
| struct spi_flash *dev; |
| |
| s = strsep(&devstr, ":"); |
| if (!s || !*s || (bus = simple_strtoul(s, &endp, 0), *endp)) { |
| printf("Invalid SPI bus %s\n", s); |
| return NULL; |
| } |
| |
| s = strsep(&devstr, ":"); |
| if (!s || !*s || (cs = simple_strtoul(s, &endp, 0), *endp)) { |
| printf("Invalid SPI chip-select %s\n", s); |
| return NULL; |
| } |
| |
| s = strsep(&devstr, ":"); |
| if (s && *s) { |
| speed = simple_strtoul(s, &endp, 0); |
| if (*endp || !speed) { |
| printf("Invalid SPI speed %s\n", s); |
| return NULL; |
| } |
| } |
| |
| s = strsep(&devstr, ":"); |
| if (s && *s) { |
| mode = simple_strtoul(s, &endp, 0); |
| if (*endp || mode > 3) { |
| printf("Invalid SPI mode %s\n", s); |
| return NULL; |
| } |
| } |
| |
| dev = spi_flash_probe(bus, cs, speed, mode); |
| if (!dev) { |
| printf("Failed to create SPI flash at %d:%d:%d:%d\n", |
| bus, cs, speed, mode); |
| return NULL; |
| } |
| |
| return dev; |
| } |
| |
| int dfu_fill_entity_sf(struct dfu_entity *dfu, char *devstr, char *s) |
| { |
| char *st; |
| |
| dfu->data.sf.dev = parse_dev(devstr); |
| if (!dfu->data.sf.dev) |
| return -ENODEV; |
| |
| dfu->dev_type = DFU_DEV_SF; |
| dfu->max_buf_size = dfu->data.sf.dev->sector_size; |
| |
| st = strsep(&s, " "); |
| if (!strcmp(st, "raw")) { |
| dfu->layout = DFU_RAW_ADDR; |
| dfu->data.sf.start = simple_strtoul(s, &s, 16); |
| s++; |
| dfu->data.sf.size = simple_strtoul(s, &s, 16); |
| } else { |
| printf("%s: Memory layout (%s) not supported!\n", __func__, st); |
| spi_flash_free(dfu->data.sf.dev); |
| return -1; |
| } |
| |
| dfu->get_medium_size = dfu_get_medium_size_sf; |
| dfu->read_medium = dfu_read_medium_sf; |
| dfu->write_medium = dfu_write_medium_sf; |
| dfu->flush_medium = dfu_flush_medium_sf; |
| dfu->poll_timeout = dfu_polltimeout_sf; |
| dfu->free_entity = dfu_free_entity_sf; |
| |
| /* initial state */ |
| dfu->inited = 0; |
| |
| return 0; |
| } |