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adam.huang
Arm Trusted Firmware
Commits
f9455cea
Commit
f9455cea
authored
Jun 13, 2016
by
danh-arm
Committed by
GitHub
Jun 13, 2016
Browse files
Merge pull request #629 from ljerry/tf_issue_398
Bring IO storage dummy driver
parents
d0ddf80c
3385f412
Changes
3
Show whitespace changes
Inline
Side-by-side
drivers/io/io_dummy.c
0 → 100644
View file @
f9455cea
/*
* Copyright (c) 2016, ARM Limited and Contributors. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of ARM nor the names of its contributors may be used
* to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <assert.h>
#include <debug.h>
#include <io_driver.h>
#include <io_storage.h>
#include <string.h>
struct
file_state
{
int
in_use
;
size_t
size
;
};
static
struct
file_state
current_file
=
{
0
};
/* Identify the device type as dummy */
io_type_t
device_type_dummy
(
void
)
{
return
IO_TYPE_DUMMY
;
}
/* Dummy device functions */
static
int
dummy_dev_open
(
const
uintptr_t
dev_spec
,
io_dev_info_t
**
dev_info
);
static
int
dummy_block_open
(
io_dev_info_t
*
dev_info
,
const
uintptr_t
spec
,
io_entity_t
*
entity
);
static
int
dummy_block_len
(
io_entity_t
*
entity
,
size_t
*
length
);
static
int
dummy_block_read
(
io_entity_t
*
entity
,
uintptr_t
buffer
,
size_t
length
,
size_t
*
length_read
);
static
int
dummy_block_close
(
io_entity_t
*
entity
);
static
int
dummy_dev_close
(
io_dev_info_t
*
dev_info
);
static
const
io_dev_connector_t
dummy_dev_connector
=
{
.
dev_open
=
dummy_dev_open
};
static
const
io_dev_funcs_t
dummy_dev_funcs
=
{
.
type
=
device_type_dummy
,
.
open
=
dummy_block_open
,
.
seek
=
NULL
,
.
size
=
dummy_block_len
,
.
read
=
dummy_block_read
,
.
write
=
NULL
,
.
close
=
dummy_block_close
,
.
dev_init
=
NULL
,
.
dev_close
=
dummy_dev_close
,
};
static
const
io_dev_info_t
dummy_dev_info
=
{
.
funcs
=
&
dummy_dev_funcs
,
.
info
=
(
uintptr_t
)
NULL
};
/* Open a connection to the dummy device */
static
int
dummy_dev_open
(
const
uintptr_t
dev_spec
__attribute__
((
unused
)),
io_dev_info_t
**
dev_info
)
{
assert
(
dev_info
!=
NULL
);
*
dev_info
=
(
io_dev_info_t
*
)
&
dummy_dev_info
;
return
0
;
}
/* Close a connection to the dummy device */
static
int
dummy_dev_close
(
io_dev_info_t
*
dev_info
)
{
return
0
;
}
/* Open a file on the dummy device */
static
int
dummy_block_open
(
io_dev_info_t
*
dev_info
,
const
uintptr_t
spec
,
io_entity_t
*
entity
)
{
int
result
;
const
io_block_spec_t
*
block_spec
=
(
io_block_spec_t
*
)
spec
;
if
(
current_file
.
in_use
==
0
)
{
assert
(
block_spec
!=
NULL
);
assert
(
entity
!=
NULL
);
current_file
.
in_use
=
1
;
current_file
.
size
=
block_spec
->
length
;
entity
->
info
=
(
uintptr_t
)
&
current_file
;
result
=
0
;
}
else
{
WARN
(
"A Dummy device is already active. Close first.
\n
"
);
result
=
-
ENOMEM
;
}
return
result
;
}
/* Return the size of a file on the dummy device */
static
int
dummy_block_len
(
io_entity_t
*
entity
,
size_t
*
length
)
{
assert
(
entity
!=
NULL
);
assert
(
length
!=
NULL
);
*
length
=
((
struct
file_state
*
)
entity
->
info
)
->
size
;
return
0
;
}
/* Read data from a file on the dummy device */
static
int
dummy_block_read
(
io_entity_t
*
entity
,
uintptr_t
buffer
,
size_t
length
,
size_t
*
length_read
)
{
assert
(
length_read
!=
NULL
);
*
length_read
=
length
;
return
0
;
}
/* Close a file on the dummy device */
static
int
dummy_block_close
(
io_entity_t
*
entity
)
{
assert
(
entity
!=
NULL
);
entity
->
info
=
0
;
current_file
.
in_use
=
0
;
return
0
;
}
/* Exported functions */
/* Register the dummy driver with the IO abstraction */
int
register_io_dev_dummy
(
const
io_dev_connector_t
**
dev_con
)
{
int
result
;
assert
(
dev_con
!=
NULL
);
result
=
io_register_device
(
&
dummy_dev_info
);
if
(
result
==
0
)
*
dev_con
=
&
dummy_dev_connector
;
return
result
;
}
include/drivers/io/io_dummy.h
0 → 100644
View file @
f9455cea
/*
* Copyright (c) 2016, ARM Limited and Contributors. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of ARM nor the names of its contributors may be used
* to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef __IO_DUMMY_H__
#define __IO_DUMMY_H__
int
register_io_dev_dummy
(
const
struct
io_dev_connector
**
dev_con
);
#endif
/* __IO_DUMMY_H__ */
include/drivers/io/io_storage.h
View file @
f9455cea
...
...
@@ -43,6 +43,7 @@ typedef enum {
IO_TYPE_INVALID
,
IO_TYPE_SEMIHOSTING
,
IO_TYPE_MEMMAP
,
IO_TYPE_DUMMY
,
IO_TYPE_FIRMWARE_IMAGE_PACKAGE
,
IO_TYPE_BLOCK
,
IO_TYPE_MAX
...
...
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