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git.ipfire.org Git - thirdparty/u-boot.git/blob - fs/semihostingfs.c
1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) 2022, Sean Anderson <sean.anderson@seco.com>
4 * Copyright (c) 2012, Google Inc.
11 #include <semihosting.h>
12 #include <semihostingfs.h>
14 int smh_fs_set_blk_dev(struct blk_desc
*rbdd
, struct disk_partition
*info
)
17 * Only accept a NULL struct blk_desc for the semihosting, which is when
18 * hostfs interface is used
23 static int smh_fs_read_at(const char *filename
, loff_t pos
, void *buffer
,
24 loff_t maxsize
, loff_t
*actread
)
28 fd
= smh_open(filename
, MODE_READ
| MODE_BINARY
);
31 ret
= smh_seek(fd
, pos
);
46 size
= smh_read(fd
, buffer
, maxsize
);
55 static int smh_fs_write_at(const char *filename
, loff_t pos
, void *buffer
,
56 loff_t towrite
, loff_t
*actwrite
)
60 /* Try to open existing file */
61 fd
= smh_open(filename
, MODE_READ
| MODE_BINARY
| MODE_PLUS
);
64 fd
= smh_open(filename
, MODE_WRITE
| MODE_BINARY
);
67 ret
= smh_seek(fd
, pos
);
73 ret
= smh_write(fd
, buffer
, towrite
, &size
);
79 int smh_fs_size(const char *filename
, loff_t
*result
)
83 fd
= smh_open(filename
, MODE_READ
| MODE_BINARY
);
97 int smh_fs_read(const char *filename
, void *buf
, loff_t offset
, loff_t len
,
102 ret
= smh_fs_read_at(filename
, offset
, buf
, len
, actread
);
104 printf("** Unable to read file %s **\n", filename
);
109 int smh_fs_write(const char *filename
, void *buf
, loff_t offset
,
110 loff_t len
, loff_t
*actwrite
)
114 ret
= smh_fs_write_at(filename
, offset
, buf
, len
, actwrite
);
116 printf("** Unable to write file %s **\n", filename
);