nvidia-cbootimage/context.c

84 lines
2.3 KiB
C

/**
* Copyright (c) 2011 NVIDIA Corporation. All rights reserved.
*
* 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 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 "cbootimage.h"
#include "data_layout.h"
#include "set.h"
static int
query_alloc(build_image_context *context,
nvbct_lib_id size_id,
u_int8_t **dst)
{
u_int32_t size;
/* Note: 3rd argument not used in this particular query. */
if (context->bctlib.get_value(size_id, &size, context->bct) != 0)
return -ENODATA;
*dst = malloc(size);
if (*dst == NULL)
return -ENOMEM;
memset(*dst, 0, size);
return 0;
}
void
cleanup_context(build_image_context *context)
{
destroy_block_list(context->memory);
destroy_addon_list(context->addon_tbl.addon_item_list);
free(context->bct);
}
int
init_context(build_image_context *context)
{
int e = 0;
/* Set defaults */
context->memory = new_block_list();
context->journal_blk = 1; /* Default to 1st block */
/* Allocate space for the bct.
* Note that this is different from the old code which pointed directly
* into a memory image.
*/
e = query_alloc(context, nvbct_lib_id_bct_size, &(context->bct));
if (e != 0)
goto fail;
context_set_value(context, token_page_size, 2048);
context_set_value(context, token_redundancy, 1);
context_set_value(context, token_version, 1);
return 0;
fail:
cleanup_context(context);
return e;
}