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