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/*
* bbu.c - barebox update functions
*
* Copyright (c) 2012 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation.
*
* 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.
*/
#include <common.h>
#include <bbu.h>
#include <linux/list.h>
#include <errno.h>
#include <readkey.h>
static LIST_HEAD(bbu_image_handlers);
int bbu_force(struct bbu_data *data, const char *fmt, ...)
{
va_list args;
printf("UPDATE: ");
va_start(args, fmt);
vprintf(fmt, args);
va_end(args);
if (!(data->flags & BBU_FLAG_FORCE))
goto out;
if (!data->force)
goto out;
data->force--;
printf(" (forced)\n");
return 1;
out:
printf("\n");
return 0;
}
int bbu_confirm(struct bbu_data *data)
{
int key;
if (data->flags & BBU_FLAG_YES)
return 0;
printf("update barebox from %s using handler %s to %s (y/n)?\n",
data->imagefile, data->handler_name,
data->devicefile);
key = read_key();
if (key == 'y') {
printf("updating barebox...\n");
return 0;
}
return -EINTR;
}
static struct bbu_handler *bbu_find_handler(const char *name)
{
struct bbu_handler *handler;
list_for_each_entry(handler, &bbu_image_handlers, list) {
if (!name) {
if (handler->flags & BBU_HANDLER_FLAG_DEFAULT)
return handler;
continue;
}
if (!strcmp(handler->name, name))
return handler;
}
return NULL;
}
/*
* do a barebox update with data from *data
*/
int barebox_update(struct bbu_data *data)
{
struct bbu_handler *handler;
int ret;
handler = bbu_find_handler(data->handler_name);
if (!handler)
return -ENODEV;
if (!data->handler_name)
data->handler_name = handler->name;
if (!data->devicefile)
data->devicefile = handler->devicefile;
ret = handler->handler(handler, data);
if (ret == -EINTR)
printf("update aborted\n");
if (!ret)
printf("update succeeded\n");
return ret;
}
/*
* print a list of all registered update handlers
*/
void bbu_handlers_list(void)
{
struct bbu_handler *handler;
if (list_empty(&bbu_image_handlers))
printf("(none)\n");
list_for_each_entry(handler, &bbu_image_handlers, list)
printf("%s%-11s -> %-10s\n",
handler->flags & BBU_HANDLER_FLAG_DEFAULT ?
"* " : " ",
handler->name,
handler->devicefile);
}
/*
* register a new update handler
*/
int bbu_register_handler(struct bbu_handler *handler)
{
if (bbu_find_handler(handler->name))
return -EBUSY;
if (handler->flags & BBU_HANDLER_FLAG_DEFAULT &&
bbu_find_handler(NULL))
return -EBUSY;
list_add_tail(&handler->list, &bbu_image_handlers);
return 0;
}
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