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 14 static 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 21 static 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 28 static 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 34 static 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 53 static int dfu_flush_medium_sf(struct dfu_entity *dfu) 54 { 55 return 0; 56 } 57 58 static unsigned int dfu_polltimeout_sf(struct dfu_entity *dfu) 59 { 60 return DFU_DEFAULT_POLL_TIMEOUT; 61 } 62 63 static void dfu_free_entity_sf(struct dfu_entity *dfu) 64 { 65 spi_flash_free(dfu->data.sf.dev); 66 } 67 68 static 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 } 116 117 int 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