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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2013 Google Inc.
*
* 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; version 2 of the License.
*
* 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.
*/
#include <cbfs.h>
#include <console/console.h>
#include <string.h>
#include <symbols.h>
static int dummy_open(struct cbfs_media *media)
{
return 0;
}
static int dummy_close(struct cbfs_media *media)
{
return 0;
}
static void * on_chip_memory_map(struct cbfs_media *media, size_t offset,
size_t count)
{
return _dram + offset;
}
static void * dummy_unmap(struct cbfs_media *media, const void *address)
{
return NULL;
}
static size_t on_chip_memory_read(struct cbfs_media *media, void *dest,
size_t offset, size_t count)
{
void *ptr = media->map(media, offset, count);
memcpy(dest, ptr, count);
media->unmap(media, ptr);
return count;
}
int init_default_cbfs_media(struct cbfs_media *media)
{
struct cbfs_header *header =
(struct cbfs_header *)(_dram + CONFIG_CBFS_HEADER_ROM_OFFSET);
if (CBFS_HEADER_MAGIC != ntohl(header->magic)) {
printk(BIOS_ERR, "Invalid CBFS master header at %p\n", header);
return -1;
}
media->open = dummy_open;
media->close = dummy_close;
media->map = on_chip_memory_map;
media->unmap = dummy_unmap;
media->read = on_chip_memory_read;
return 0;
}
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