1 /*
2  * Copyright 2015 Freescale Semiconductor, Inc.
3  *
4  * SPDX-License-Identifier:	GPL-2.0+
5  */
6 
7 #include <common.h>
8 #include <command.h>
9 #include <fsl_validate.h>
10 
11 static int do_esbc_halt(cmd_tbl_t *cmdtp, int flag, int argc,
12 				char * const argv[])
13 {
14 	if (fsl_check_boot_mode_secure() == 0) {
15 		printf("Boot Mode is Non-Secure. Not entering spin loop.\n");
16 		return 0;
17 	}
18 
19 	printf("Core is entering spin loop.\n");
20 loop:
21 	goto loop;
22 
23 	return 0;
24 }
25 
26 static int do_esbc_validate(cmd_tbl_t *cmdtp, int flag, int argc,
27 				char * const argv[])
28 {
29 	char *hash_str = NULL;
30 	uintptr_t haddr;
31 	int ret;
32 
33 	if (argc < 2)
34 		return cmd_usage(cmdtp);
35 	else if (argc > 2)
36 		/* Second arg - Optional - Hash Str*/
37 		hash_str = argv[2];
38 
39 	/* First argument - header address -32/64bit */
40 	haddr = (uintptr_t)simple_strtoul(argv[1], NULL, 16);
41 
42 	/* With esbc_validate command, Image address must be
43 	 * part of header. So, the function is called
44 	 * by passing this argument as 0.
45 	 */
46 	ret = fsl_secboot_validate(haddr, hash_str, 0);
47 	if (ret)
48 		return 1;
49 
50 	printf("esbc_validate command successful\n");
51 	return 0;
52 }
53 
54 /***************************************************/
55 static char esbc_validate_help_text[] =
56 	"esbc_validate hdr_addr <hash_val> - Validates signature using\n"
57 	"                          RSA verification\n"
58 	"                          $hdr_addr Address of header of the image\n"
59 	"                          to be validated.\n"
60 	"                          $hash_val -Optional\n"
61 	"                          It provides Hash of public/srk key to be\n"
62 	"                          used to verify signature.\n";
63 
64 U_BOOT_CMD(
65 	esbc_validate,	3,	0,	do_esbc_validate,
66 	"Validates signature on a given image using RSA verification",
67 	esbc_validate_help_text
68 );
69 
70 U_BOOT_CMD(
71 	esbc_halt,	1,	0,	do_esbc_halt,
72 	"Put the core in spin loop (Secure Boot Only)",
73 	""
74 );
75