diff options
author | Simon Glass <sjg@chromium.org> | 2016-01-17 20:53:51 -0700 |
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committer | Tom Rini <trini@konsulko.com> | 2016-01-25 10:39:43 -0500 |
commit | 72a8cf8dccf6f8b86d1683205e032a94eaa86938 (patch) | |
tree | b29378eb8af182f0faf2028cb52465a021de40cc /cmd/cmd_aes.c | |
parent | 25d5352c71dcc599030a4a764d8087185ed537d3 (diff) | |
download | u-boot-72a8cf8dccf6f8b86d1683205e032a94eaa86938.tar.gz |
Move all command code into its own directory
There are a lot of unrelated files in common, including all of the commands.
Moving them into their own directory makes them easier to find and is more
logical.
Some commands include non-command code, such as cmd_scsi.c. This should be
sorted out at some point so that the function can be enabled with or without
the associated command.
Unfortunately, with m68k I get this error:
m68k: + M5329AFEE
+arch/m68k/cpu/mcf532x/start.o: In function `_start':
+arch/m68k/cpu/mcf532x/start.S:159:(.text+0x452): relocation truncated to fit: R_68K_PC16 against symbol `board_init_f' defined in .text.board_init_f section in common/built-in.o
I hope someone can shed some light on what this means. I hope it isn't
depending on the position of code in the image.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Acked-by: Stefan Roese <sr@denx.de>
Acked-by: Przemyslaw Marczak <p.marczak@samsung.com>
Diffstat (limited to 'cmd/cmd_aes.c')
-rw-r--r-- | cmd/cmd_aes.c | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/cmd/cmd_aes.c b/cmd/cmd_aes.c new file mode 100644 index 0000000000..76da3efffe --- /dev/null +++ b/cmd/cmd_aes.c @@ -0,0 +1,89 @@ +/* + * Copyright (C) 2014 Marek Vasut <marex@denx.de> + * + * Command for en/de-crypting block of memory with AES-128-CBC cipher. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <command.h> +#include <environment.h> +#include <aes.h> +#include <malloc.h> +#include <asm/byteorder.h> +#include <linux/compiler.h> + +DECLARE_GLOBAL_DATA_PTR; + +/** + * do_aes() - Handle the "aes" command-line command + * @cmdtp: Command data struct pointer + * @flag: Command flag + * @argc: Command-line argument count + * @argv: Array of command-line arguments + * + * Returns zero on success, CMD_RET_USAGE in case of misuse and negative + * on error. + */ +static int do_aes(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]) +{ + uint32_t key_addr, src_addr, dst_addr, len; + uint8_t *key_ptr, *src_ptr, *dst_ptr; + uint8_t key_exp[AES_EXPAND_KEY_LENGTH]; + uint32_t aes_blocks; + int enc; + + if (argc != 6) + return CMD_RET_USAGE; + + if (!strncmp(argv[1], "enc", 3)) + enc = 1; + else if (!strncmp(argv[1], "dec", 3)) + enc = 0; + else + return CMD_RET_USAGE; + + key_addr = simple_strtoul(argv[2], NULL, 16); + src_addr = simple_strtoul(argv[3], NULL, 16); + dst_addr = simple_strtoul(argv[4], NULL, 16); + len = simple_strtoul(argv[5], NULL, 16); + + key_ptr = (uint8_t *)key_addr; + src_ptr = (uint8_t *)src_addr; + dst_ptr = (uint8_t *)dst_addr; + + /* First we expand the key. */ + aes_expand_key(key_ptr, key_exp); + + /* Calculate the number of AES blocks to encrypt. */ + aes_blocks = DIV_ROUND_UP(len, AES_KEY_LENGTH); + + if (enc) + aes_cbc_encrypt_blocks(key_exp, src_ptr, dst_ptr, aes_blocks); + else + aes_cbc_decrypt_blocks(key_exp, src_ptr, dst_ptr, aes_blocks); + + return 0; +} + +/***************************************************/ +#ifdef CONFIG_SYS_LONGHELP +static char aes_help_text[] = + "enc key src dst len - Encrypt block of data $len bytes long\n" + " at address $src using a key at address\n" + " $key and store the result at address\n" + " $dst. The $len size must be multiple of\n" + " 16 bytes and $key must be 16 bytes long.\n" + "aes dec key src dst len - Decrypt block of data $len bytes long\n" + " at address $src using a key at address\n" + " $key and store the result at address\n" + " $dst. The $len size must be multiple of\n" + " 16 bytes and $key must be 16 bytes long."; +#endif + +U_BOOT_CMD( + aes, 6, 1, do_aes, + "AES 128 CBC encryption", + aes_help_text +); |