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/*
* dfu.c -- DFU back-end routines
*
* Copyright (C) 2012 Samsung Electronics
* author: Lukasz Majewski <l.majewski@samsung.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <common.h>
#include <malloc.h>
#include <mmc.h>
#include <fat.h>
#include <dfu.h>
#include <linux/list.h>
#include <linux/compiler.h>
static LIST_HEAD(dfu_list);
static int dfu_alt_num;
static int dfu_find_alt_num(const char *s)
{
int i = 0;
for (; *s; s++)
if (*s == ';')
i++;
return ++i;
}
static unsigned char __aligned(CONFIG_SYS_CACHELINE_SIZE)
dfu_buf[DFU_DATA_BUF_SIZE];
int dfu_write(struct dfu_entity *dfu, void *buf, int size, int blk_seq_num)
{
static unsigned char *i_buf;
static int i_blk_seq_num;
long w_size = 0;
int ret = 0;
debug("%s: name: %s buf: 0x%p size: 0x%x p_num: 0x%x i_buf: 0x%p\n",
__func__, dfu->name, buf, size, blk_seq_num, i_buf);
if (blk_seq_num == 0) {
i_buf = dfu_buf;
i_blk_seq_num = 0;
}
if (i_blk_seq_num++ != blk_seq_num) {
printf("%s: Wrong sequence number! [%d] [%d]\n",
__func__, i_blk_seq_num, blk_seq_num);
return -1;
}
memcpy(i_buf, buf, size);
i_buf += size;
if (size == 0) {
/* Integrity check (if needed) */
debug("%s: %s %d [B] CRC32: 0x%x\n", __func__, dfu->name,
i_buf - dfu_buf, crc32(0, dfu_buf, i_buf - dfu_buf));
w_size = i_buf - dfu_buf;
ret = dfu->write_medium(dfu, dfu_buf, &w_size);
if (ret)
debug("%s: Write error!\n", __func__);
i_blk_seq_num = 0;
i_buf = NULL;
return ret;
}
return ret;
}
int dfu_read(struct dfu_entity *dfu, void *buf, int size, int blk_seq_num)
{
static unsigned char *i_buf;
static int i_blk_seq_num;
static long r_size;
static u32 crc;
int ret = 0;
debug("%s: name: %s buf: 0x%p size: 0x%x p_num: 0x%x i_buf: 0x%p\n",
__func__, dfu->name, buf, size, blk_seq_num, i_buf);
if (blk_seq_num == 0) {
i_buf = dfu_buf;
ret = dfu->read_medium(dfu, i_buf, &r_size);
debug("%s: %s %ld [B]\n", __func__, dfu->name, r_size);
i_blk_seq_num = 0;
/* Integrity check (if needed) */
crc = crc32(0, dfu_buf, r_size);
}
if (i_blk_seq_num++ != blk_seq_num) {
printf("%s: Wrong sequence number! [%d] [%d]\n",
__func__, i_blk_seq_num, blk_seq_num);
return -1;
}
if (r_size >= size) {
memcpy(buf, i_buf, size);
i_buf += size;
r_size -= size;
return size;
} else {
memcpy(buf, i_buf, r_size);
i_buf += r_size;
debug("%s: %s CRC32: 0x%x\n", __func__, dfu->name, crc);
puts("UPLOAD ... done\nCtrl+C to exit ...\n");
i_buf = NULL;
i_blk_seq_num = 0;
crc = 0;
return r_size;
}
return ret;
}
static int dfu_fill_entity(struct dfu_entity *dfu, char *s, int alt,
char *interface, int num)
{
char *st;
debug("%s: %s interface: %s num: %d\n", __func__, s, interface, num);
st = strsep(&s, " ");
strcpy(dfu->name, st);
dfu->dev_num = num;
dfu->alt = alt;
/* Specific for mmc device */
if (strcmp(interface, "mmc") == 0) {
if (dfu_fill_entity_mmc(dfu, s))
return -1;
} else {
printf("%s: Device %s not (yet) supported!\n",
__func__, interface);
return -1;
}
return 0;
}
void dfu_free_entities(void)
{
struct dfu_entity *dfu, *p, *t = NULL;
list_for_each_entry_safe_reverse(dfu, p, &dfu_list, list) {
list_del(&dfu->list);
t = dfu;
}
if (t)
free(t);
INIT_LIST_HEAD(&dfu_list);
}
int dfu_config_entities(char *env, char *interface, int num)
{
struct dfu_entity *dfu;
int i, ret;
char *s;
dfu_alt_num = dfu_find_alt_num(env);
debug("%s: dfu_alt_num=%d\n", __func__, dfu_alt_num);
dfu = calloc(sizeof(*dfu), dfu_alt_num);
if (!dfu)
return -1;
for (i = 0; i < dfu_alt_num; i++) {
s = strsep(&env, ";");
ret = dfu_fill_entity(&dfu[i], s, i, interface, num);
if (ret)
return -1;
list_add_tail(&dfu[i].list, &dfu_list);
}
return 0;
}
const char *dfu_get_dev_type(enum dfu_device_type t)
{
const char *dev_t[] = {NULL, "eMMC", "OneNAND", "NAND" };
return dev_t[t];
}
const char *dfu_get_layout(enum dfu_layout l)
{
const char *dfu_layout[] = {NULL, "RAW_ADDR", "FAT", "EXT2",
"EXT3", "EXT4" };
return dfu_layout[l];
}
void dfu_show_entities(void)
{
struct dfu_entity *dfu;
puts("DFU alt settings list:\n");
list_for_each_entry(dfu, &dfu_list, list) {
printf("dev: %s alt: %d name: %s layout: %s\n",
dfu_get_dev_type(dfu->dev_type), dfu->alt,
dfu->name, dfu_get_layout(dfu->layout));
}
}
int dfu_get_alt_number(void)
{
return dfu_alt_num;
}
struct dfu_entity *dfu_get_entity(int alt)
{
struct dfu_entity *dfu;
list_for_each_entry(dfu, &dfu_list, list) {
if (dfu->alt == alt)
return dfu;
}
return NULL;
}
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