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cmd: aes: use map_sysmem when accessing memory

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The aes command used to segfault when accessing memory in sandbox.
The pointer accesses should be mapped.

Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>
This commit is contained in:
Philippe Reynes 2019-09-24 11:32:29 +02:00 committed by Simon Glass
parent 5fff9b3bc9
commit ed7ea058a9
1 changed files with 10 additions and 4 deletions
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14
cmd/aes.c
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@ -11,6 +11,7 @@
#include <malloc.h>
#include <asm/byteorder.h>
#include <linux/compiler.h>
#include <mapmem.h>
/**
* do_aes() - Handle the "aes" command-line command
@ -46,10 +47,10 @@ static int do_aes(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
dst_addr = simple_strtoul(argv[5], NULL, 16);
len = simple_strtoul(argv[6], NULL, 16);
key_ptr = (uint8_t *)key_addr;
iv_ptr = (uint8_t *)iv_addr;
src_ptr = (uint8_t *)src_addr;
dst_ptr = (uint8_t *)dst_addr;
key_ptr = (uint8_t *)map_sysmem(key_addr, 128 / 8);
iv_ptr = (uint8_t *)map_sysmem(iv_addr, 128 / 8);
src_ptr = (uint8_t *)map_sysmem(src_addr, len);
dst_ptr = (uint8_t *)map_sysmem(dst_addr, len);
/* First we expand the key. */
aes_expand_key(key_ptr, key_exp);
@ -64,6 +65,11 @@ static int do_aes(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
aes_cbc_decrypt_blocks(key_exp, iv_ptr, src_ptr, dst_ptr,
aes_blocks);
unmap_sysmem(key_ptr);
unmap_sysmem(iv_ptr);
unmap_sysmem(src_ptr);
unmap_sysmem(dst_ptr);
return 0;
}