LXR uboot/drivers/dfu/dfu

   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * Copyright (c) 2014, NVIDIA CORPORATION. All rights reserved.
   4 */
   5
   6#include <common.h>
   7#include <malloc.h>
   8#include <errno.h>
   9#include <div64.h>
  10#include <dfu.h>
  11#include <spi.h>
  12#include <spi_flash.h>
  13
  14static int dfu_get_medium_size_sf(struct dfu_entity *dfu, u64 *size)
  15{
  16        *size = dfu->data.sf.size;
  17
  18        return 0;
  19}
  20
  21static int dfu_read_medium_sf(struct dfu_entity *dfu, u64 offset, void *buf,
  22                long *len)
  23{
  24        return spi_flash_read(dfu->data.sf.dev, dfu->data.sf.start + offset,
  25                *len, buf);
  26}
  27
  28static u64 find_sector(struct dfu_entity *dfu, u64 start, u64 offset)
  29{
  30        return (lldiv((start + offset), dfu->data.sf.dev->sector_size)) *
  31                dfu->data.sf.dev->sector_size;
  32}
  33
  34static int dfu_write_medium_sf(struct dfu_entity *dfu,
  35                u64 offset, void *buf, long *len)
  36{
  37        int ret;
  38
  39        ret = spi_flash_erase(dfu->data.sf.dev,
  40                              find_sector(dfu, dfu->data.sf.start, offset),
  41                              dfu->data.sf.dev->sector_size);
  42        if (ret)
  43                return ret;
  44
  45        ret = spi_flash_write(dfu->data.sf.dev, dfu->data.sf.start + offset,
  46                              *len, buf);
  47        if (ret)
  48                return ret;
  49
  50        return 0;
  51}
  52
  53static int dfu_flush_medium_sf(struct dfu_entity *dfu)
  54{
  55        return 0;
  56}
  57
  58static unsigned int dfu_polltimeout_sf(struct dfu_entity *dfu)
  59{
  60        return DFU_DEFAULT_POLL_TIMEOUT;
  61}
  62
  63static void dfu_free_entity_sf(struct dfu_entity *dfu)
  64{
  65        spi_flash_free(dfu->data.sf.dev);
  66}
  67
  68static struct spi_flash *parse_dev(char *devstr)
  69{
  70        unsigned int bus;
  71        unsigned int cs;
  72        unsigned int speed = CONFIG_SF_DEFAULT_SPEED;
  73        unsigned int mode = CONFIG_SF_DEFAULT_MODE;
  74        char *s, *endp;
  75        struct spi_flash *dev;
  76
  77        s = strsep(&devstr, ":");
  78        if (!s || !*s || (bus = simple_strtoul(s, &endp, 0), *endp)) {
  79                printf("Invalid SPI bus %s\n", s);
  80                return NULL;
  81        }
  82
  83        s = strsep(&devstr, ":");
  84        if (!s || !*s || (cs = simple_strtoul(s, &endp, 0), *endp)) {
  85                printf("Invalid SPI chip-select %s\n", s);
  86                return NULL;
  87        }
  88
  89        s = strsep(&devstr, ":");
  90        if (s && *s) {
  91                speed = simple_strtoul(s, &endp, 0);
  92                if (*endp || !speed) {
  93                        printf("Invalid SPI speed %s\n", s);
  94                        return NULL;
  95                }
  96        }
  97
  98        s = strsep(&devstr, ":");
  99        if (s && *s) {
 100                mode = simple_strtoul(s, &endp, 0);
 101                if (*endp || mode > 3) {
 102                        printf("Invalid SPI mode %s\n", s);
 103                        return NULL;
 104                }
 105        }
 106
 107        dev = spi_flash_probe(bus, cs, speed, mode);
 108        if (!dev) {
 109                printf("Failed to create SPI flash at %d:%d:%d:%d\n",
 110                       bus, cs, speed, mode);
 111                return NULL;
 112        }
 113
 114        return dev;
 115}
 116
 117int dfu_fill_entity_sf(struct dfu_entity *dfu, char *devstr, char *s)
 118{
 119        char *st;
 120        char *devstr_bkup = strdup(devstr);
 121
 122        dfu->data.sf.dev = parse_dev(devstr_bkup);
 123        free(devstr_bkup);
 124        if (!dfu->data.sf.dev)
 125                return -ENODEV;
 126
 127        dfu->dev_type = DFU_DEV_SF;
 128        dfu->max_buf_size = dfu->data.sf.dev->sector_size;
 129
 130        st = strsep(&s, " ");
 131        if (!strcmp(st, "raw")) {
 132                dfu->layout = DFU_RAW_ADDR;
 133                dfu->data.sf.start = simple_strtoul(s, &s, 16);
 134                s++;
 135                dfu->data.sf.size = simple_strtoul(s, &s, 16);
 136        } else {
 137                printf("%s: Memory layout (%s) not supported!\n", __func__, st);
 138                spi_flash_free(dfu->data.sf.dev);
 139                return -1;
 140        }
 141
 142        dfu->get_medium_size = dfu_get_medium_size_sf;
 143        dfu->read_medium = dfu_read_medium_sf;
 144        dfu->write_medium = dfu_write_medium_sf;
 145        dfu->flush_medium = dfu_flush_medium_sf;
 146        dfu->poll_timeout = dfu_polltimeout_sf;
 147        dfu->free_entity = dfu_free_entity_sf;
 148
 149        /* initial state */
 150        dfu->inited = 0;
 151
 152        return 0;
 153}
 154