mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-21 02:33:07 +00:00
90 lines
2.2 KiB
C
90 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright 2008-2015 Freescale Semiconductor, Inc.
|
|
*
|
|
* Command for encapsulating DEK blob
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <command.h>
|
|
#include <log.h>
|
|
#include <malloc.h>
|
|
#include <asm/byteorder.h>
|
|
#include <linux/compiler.h>
|
|
#include <fsl_sec.h>
|
|
#include <asm/arch/clock.h>
|
|
#include <mapmem.h>
|
|
|
|
/**
|
|
* blob_dek() - Encapsulate the DEK as a blob using CAM's Key
|
|
* @src: - Address of data to be encapsulated
|
|
* @dst: - Desination address of encapsulated data
|
|
* @len: - Size of data to be encapsulated
|
|
*
|
|
* Returns zero on success,and negative on error.
|
|
*/
|
|
static int blob_encap_dek(const u8 *src, u8 *dst, u32 len)
|
|
{
|
|
int ret = 0;
|
|
u32 jr_size = 4;
|
|
|
|
u32 out_jr_size = sec_in32(CONFIG_SYS_FSL_JR0_ADDR + 0x102c);
|
|
if (out_jr_size != jr_size) {
|
|
hab_caam_clock_enable(1);
|
|
sec_init();
|
|
}
|
|
|
|
if (!((len == 128) | (len == 192) | (len == 256))) {
|
|
debug("Invalid DEK size. Valid sizes are 128, 192 and 256b\n");
|
|
return -1;
|
|
}
|
|
|
|
len /= 8;
|
|
ret = blob_dek(src, dst, len);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* do_dek_blob() - Handle the "dek_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_dek_blob(struct cmd_tbl *cmdtp, int flag, int argc,
|
|
char *const argv[])
|
|
{
|
|
uint32_t src_addr, dst_addr, len;
|
|
uint8_t *src_ptr, *dst_ptr;
|
|
int ret = 0;
|
|
|
|
if (argc != 4)
|
|
return CMD_RET_USAGE;
|
|
|
|
src_addr = simple_strtoul(argv[1], NULL, 16);
|
|
dst_addr = simple_strtoul(argv[2], NULL, 16);
|
|
len = simple_strtoul(argv[3], NULL, 10);
|
|
|
|
src_ptr = map_sysmem(src_addr, len/8);
|
|
dst_ptr = map_sysmem(dst_addr, BLOB_SIZE(len/8));
|
|
|
|
ret = blob_encap_dek(src_ptr, dst_ptr, len);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/***************************************************/
|
|
static char dek_blob_help_text[] =
|
|
"src dst len - Encapsulate and create blob of data\n"
|
|
" $len bits long at address $src and\n"
|
|
" store the result at address $dst.\n";
|
|
|
|
U_BOOT_CMD(
|
|
dek_blob, 4, 1, do_dek_blob,
|
|
"Data Encryption Key blob encapsulation",
|
|
dek_blob_help_text
|
|
);
|