2532429b16
This patch enable blob command for mScale platforms. Signed-off-by: Aymen Sghaier <aymen.sghaier@nxp.com> Signed-off-by: Peng Fan <peng.fan@nxp.com>
125 lines
3.6 KiB
C
125 lines
3.6 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
*
|
|
* Command for encapsulating/decapsulating blob of memory.
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <command.h>
|
|
#include <malloc.h>
|
|
#include <asm/byteorder.h>
|
|
#include <linux/compiler.h>
|
|
#if defined(CONFIG_ARCH_MX6) || defined(CONFIG_ARCH_MX7) || \
|
|
defined(CONFIG_ARCH_MX7ULP) || defined(CONFIG_ARCH_IMX8M)
|
|
#include <fsl_sec.h>
|
|
#include <asm/arch/clock.h>
|
|
#endif
|
|
|
|
/**
|
|
* blob_decap() - Decapsulate the data as a blob
|
|
* @key_mod: - Pointer to key modifier/key
|
|
* @src: - Address of data to be decapsulated
|
|
* @dst: - Address of data to be decapsulated
|
|
* @len: - Size of data to be decapsulated
|
|
*
|
|
* Returns zero on success,and negative on error.
|
|
*/
|
|
__weak int blob_decap(u8 *key_mod, u8 *src, u8 *dst, u32 len)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* blob_encap() - Encapsulate the data as a blob
|
|
* @key_mod: - Pointer to key modifier/key
|
|
* @src: - Address of data to be encapsulated
|
|
* @dst: - Address of data to be encapsulated
|
|
* @len: - Size of data to be encapsulated
|
|
*
|
|
* Returns zero on success,and negative on error.
|
|
*/
|
|
__weak int blob_encap(u8 *key_mod, u8 *src, u8 *dst, u32 len)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* do_blob() - Handle the "blob" 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_blob(struct cmd_tbl *cmdtp, int flag, int argc,
|
|
char *const argv[])
|
|
{
|
|
ulong key_addr, src_addr, dst_addr, len;
|
|
uint8_t *km_ptr, *src_ptr, *dst_ptr;
|
|
int enc, ret = 0;
|
|
|
|
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;
|
|
|
|
src_addr = simple_strtoul(argv[2], NULL, 16);
|
|
dst_addr = simple_strtoul(argv[3], NULL, 16);
|
|
len = simple_strtoul(argv[4], NULL, 16);
|
|
key_addr = simple_strtoul(argv[5], NULL, 16);
|
|
|
|
km_ptr = (uint8_t *)(uintptr_t)key_addr;
|
|
src_ptr = (uint8_t *)(uintptr_t)src_addr;
|
|
dst_ptr = (uint8_t *)(uintptr_t)dst_addr;
|
|
|
|
#if defined(CONFIG_ARCH_MX6) || defined(CONFIG_ARCH_MX7) || \
|
|
defined(CONFIG_ARCH_MX7ULP) || defined(CONFIG_ARCH_IMX8M)
|
|
|
|
hab_caam_clock_enable(1);
|
|
|
|
u32 out_jr_size = sec_in32(CONFIG_SYS_FSL_JR0_ADDR +
|
|
FSL_CAAM_ORSR_JRa_OFFSET);
|
|
if (out_jr_size != FSL_CAAM_MAX_JR_SIZE)
|
|
sec_init();
|
|
#endif
|
|
|
|
if (enc)
|
|
ret = blob_encap(km_ptr, src_ptr, dst_ptr, len);
|
|
else
|
|
ret = blob_decap(km_ptr, src_ptr, dst_ptr, len);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/***************************************************/
|
|
static char blob_help_text[] =
|
|
"enc src dst len km - Encapsulate and create blob of data\n"
|
|
" $len bytes long at address $src and\n"
|
|
" store the result at address $dst.\n"
|
|
" $km is the address where the key\n"
|
|
" modifier is stored.\n"
|
|
" The modifier is required for generation\n"
|
|
" /use as key for cryptographic operation.\n"
|
|
" Key modifier should be 16 byte long.\n"
|
|
"blob dec src dst len km - Decapsulate the blob of data at address\n"
|
|
" $src and store result of $len byte at\n"
|
|
" addr $dst.\n"
|
|
" $km is the address where the key\n"
|
|
" modifier is stored.\n"
|
|
" The modifier is required for generation\n"
|
|
" /use as key for cryptographic operation.\n"
|
|
" Key modifier should be 16 byte long.\n";
|
|
|
|
U_BOOT_CMD(
|
|
blob, 6, 1, do_blob,
|
|
"Blob encapsulation/decryption",
|
|
blob_help_text
|
|
);
|