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