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
dfu_get_medium_size_sf(struct dfu_entity * dfu,u64 * size)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
dfu_read_medium_sf(struct dfu_entity * dfu,u64 offset,void * buf,long * len)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
find_sector(struct dfu_entity * dfu,u64 start,u64 offset)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
dfu_write_medium_sf(struct dfu_entity * dfu,u64 offset,void * buf,long * len)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
dfu_flush_medium_sf(struct dfu_entity * dfu)53 static int dfu_flush_medium_sf(struct dfu_entity *dfu)
54 {
55 return 0;
56 }
57
dfu_polltimeout_sf(struct dfu_entity * dfu)58 static unsigned int dfu_polltimeout_sf(struct dfu_entity *dfu)
59 {
60 return DFU_DEFAULT_POLL_TIMEOUT;
61 }
62
dfu_free_entity_sf(struct dfu_entity * dfu)63 static void dfu_free_entity_sf(struct dfu_entity *dfu)
64 {
65 spi_flash_free(dfu->data.sf.dev);
66 }
67
parse_dev(char * devstr)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
dfu_fill_entity_sf(struct dfu_entity * dfu,char * devstr,char * s)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