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git.ipfire.org Git - thirdparty/u-boot.git/blob - cmd/blob.c
1 // SPDX-License-Identifier: GPL-2.0+
4 * Command for encapsulating/decapsulating blob of memory.
9 #include <environment.h>
11 #include <asm/byteorder.h>
12 #include <linux/compiler.h>
15 * blob_decap() - Decapsulate the data as a blob
16 * @key_mod: - Pointer to key modifier/key
17 * @src: - Address of data to be decapsulated
18 * @dst: - Address of data to be decapsulated
19 * @len: - Size of data to be decapsulated
21 * Returns zero on success,and negative on error.
23 __weak
int blob_decap(u8
*key_mod
, u8
*src
, u8
*dst
, u32 len
)
29 * blob_encap() - Encapsulate the data as a blob
30 * @key_mod: - Pointer to key modifier/key
31 * @src: - Address of data to be encapsulated
32 * @dst: - Address of data to be encapsulated
33 * @len: - Size of data to be encapsulated
35 * Returns zero on success,and negative on error.
37 __weak
int blob_encap(u8
*key_mod
, u8
*src
, u8
*dst
, u32 len
)
43 * do_blob() - Handle the "blob" command-line command
44 * @cmdtp: Command data struct pointer
46 * @argc: Command-line argument count
47 * @argv: Array of command-line arguments
49 * Returns zero on success, CMD_RET_USAGE in case of misuse and negative
52 static int do_blob(cmd_tbl_t
*cmdtp
, int flag
, int argc
, char *const argv
[])
54 ulong key_addr
, src_addr
, dst_addr
, len
;
55 uint8_t *km_ptr
, *src_ptr
, *dst_ptr
;
61 if (!strncmp(argv
[1], "enc", 3))
63 else if (!strncmp(argv
[1], "dec", 3))
68 src_addr
= simple_strtoul(argv
[2], NULL
, 16);
69 dst_addr
= simple_strtoul(argv
[3], NULL
, 16);
70 len
= simple_strtoul(argv
[4], NULL
, 16);
71 key_addr
= simple_strtoul(argv
[5], NULL
, 16);
73 km_ptr
= (uint8_t *)(uintptr_t)key_addr
;
74 src_ptr
= (uint8_t *)(uintptr_t)src_addr
;
75 dst_ptr
= (uint8_t *)(uintptr_t)dst_addr
;
78 ret
= blob_encap(km_ptr
, src_ptr
, dst_ptr
, len
);
80 ret
= blob_decap(km_ptr
, src_ptr
, dst_ptr
, len
);
85 /***************************************************/
86 static char blob_help_text
[] =
87 "enc src dst len km - Encapsulate and create blob of data\n"
88 " $len bytes long at address $src and\n"
89 " store the result at address $dst.\n"
90 " $km is the address where the key\n"
91 " modifier is stored.\n"
92 " The modifier is required for generation\n"
93 " /use as key for cryptographic operation.\n"
94 " Key modifier should be 16 byte long.\n"
95 "blob dec src dst len km - Decapsulate the blob of data at address\n"
96 " $src and store result of $len byte at\n"
98 " $km is the address where the key\n"
99 " modifier is stored.\n"
100 " The modifier is required for generation\n"
101 " /use as key for cryptographic operation.\n"
102 " Key modifier should be 16 byte long.\n";
106 "Blob encapsulation/decryption",