Stephen Warren | 0280af7 | 2014-06-11 16:03:36 -0600 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2014, NVIDIA CORPORATION. All rights reserved. |
| 3 | * |
| 4 | * SPDX-License-Identifier: GPL-2.0+ |
| 5 | */ |
| 6 | |
| 7 | #include <common.h> |
| 8 | #include <malloc.h> |
| 9 | #include <errno.h> |
| 10 | #include <div64.h> |
| 11 | #include <dfu.h> |
| 12 | #include <spi_flash.h> |
| 13 | |
| 14 | static long dfu_get_medium_size_sf(struct dfu_entity *dfu) |
| 15 | { |
| 16 | return dfu->data.sf.size; |
| 17 | } |
| 18 | |
| 19 | static int dfu_read_medium_sf(struct dfu_entity *dfu, u64 offset, void *buf, |
| 20 | long *len) |
| 21 | { |
| 22 | return spi_flash_read(dfu->data.sf.dev, offset, *len, buf); |
| 23 | } |
| 24 | |
| 25 | static int dfu_write_medium_sf(struct dfu_entity *dfu, |
| 26 | u64 offset, void *buf, long *len) |
| 27 | { |
| 28 | int ret; |
| 29 | |
| 30 | ret = spi_flash_erase(dfu->data.sf.dev, offset, *len); |
| 31 | if (ret) |
| 32 | return ret; |
| 33 | |
| 34 | ret = spi_flash_write(dfu->data.sf.dev, offset, *len, buf); |
| 35 | if (ret) |
| 36 | return ret; |
| 37 | |
| 38 | return 0; |
| 39 | } |
| 40 | |
| 41 | static int dfu_flush_medium_sf(struct dfu_entity *dfu) |
| 42 | { |
| 43 | return 0; |
| 44 | } |
| 45 | |
| 46 | static unsigned int dfu_polltimeout_sf(struct dfu_entity *dfu) |
| 47 | { |
| 48 | return DFU_DEFAULT_POLL_TIMEOUT; |
| 49 | } |
| 50 | |
| 51 | static void dfu_free_entity_sf(struct dfu_entity *dfu) |
| 52 | { |
| 53 | spi_flash_free(dfu->data.sf.dev); |
| 54 | } |
| 55 | |
| 56 | static struct spi_flash *parse_dev(char *devstr) |
| 57 | { |
| 58 | unsigned int bus; |
| 59 | unsigned int cs; |
| 60 | unsigned int speed = CONFIG_SF_DEFAULT_SPEED; |
| 61 | unsigned int mode = CONFIG_SF_DEFAULT_MODE; |
| 62 | char *s, *endp; |
| 63 | struct spi_flash *dev; |
| 64 | |
| 65 | s = strsep(&devstr, ":"); |
| 66 | if (!s || !*s || (bus = simple_strtoul(s, &endp, 0), *endp)) { |
| 67 | printf("Invalid SPI bus %s\n", s); |
| 68 | return NULL; |
| 69 | } |
| 70 | |
| 71 | s = strsep(&devstr, ":"); |
| 72 | if (!s || !*s || (cs = simple_strtoul(s, &endp, 0), *endp)) { |
| 73 | printf("Invalid SPI chip-select %s\n", s); |
| 74 | return NULL; |
| 75 | } |
| 76 | |
| 77 | s = strsep(&devstr, ":"); |
| 78 | if (s && *s) { |
| 79 | speed = simple_strtoul(s, &endp, 0); |
| 80 | if (*endp || !speed) { |
| 81 | printf("Invalid SPI speed %s\n", s); |
| 82 | return NULL; |
| 83 | } |
| 84 | } |
| 85 | |
| 86 | s = strsep(&devstr, ":"); |
| 87 | if (s && *s) { |
| 88 | mode = simple_strtoul(s, &endp, 0); |
| 89 | if (*endp || mode > 3) { |
| 90 | printf("Invalid SPI mode %s\n", s); |
| 91 | return NULL; |
| 92 | } |
| 93 | } |
| 94 | |
| 95 | dev = spi_flash_probe(bus, cs, speed, mode); |
| 96 | if (!dev) { |
| 97 | printf("Failed to create SPI flash at %d:%d:%d:%d\n", |
| 98 | bus, cs, speed, mode); |
| 99 | return NULL; |
| 100 | } |
| 101 | |
| 102 | return dev; |
| 103 | } |
| 104 | |
| 105 | int dfu_fill_entity_sf(struct dfu_entity *dfu, char *devstr, char *s) |
| 106 | { |
| 107 | char *st; |
| 108 | |
| 109 | dfu->data.sf.dev = parse_dev(devstr); |
| 110 | if (!dfu->data.sf.dev) |
| 111 | return -ENODEV; |
| 112 | |
| 113 | dfu->dev_type = DFU_DEV_SF; |
| 114 | dfu->max_buf_size = dfu->data.sf.dev->sector_size; |
| 115 | |
| 116 | st = strsep(&s, " "); |
| 117 | if (!strcmp(st, "raw")) { |
| 118 | dfu->layout = DFU_RAW_ADDR; |
| 119 | dfu->data.sf.start = simple_strtoul(s, &s, 16); |
| 120 | s++; |
| 121 | dfu->data.sf.size = simple_strtoul(s, &s, 16); |
| 122 | } else { |
| 123 | printf("%s: Memory layout (%s) not supported!\n", __func__, st); |
| 124 | spi_flash_free(dfu->data.sf.dev); |
| 125 | return -1; |
| 126 | } |
| 127 | |
| 128 | dfu->get_medium_size = dfu_get_medium_size_sf; |
| 129 | dfu->read_medium = dfu_read_medium_sf; |
| 130 | dfu->write_medium = dfu_write_medium_sf; |
| 131 | dfu->flush_medium = dfu_flush_medium_sf; |
| 132 | dfu->poll_timeout = dfu_polltimeout_sf; |
| 133 | dfu->free_entity = dfu_free_entity_sf; |
| 134 | |
| 135 | /* initial state */ |
| 136 | dfu->inited = 0; |
| 137 | |
| 138 | return 0; |
| 139 | } |