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 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 #ifndef CONFIG_SPL_BUILD
27 static int do_esbc_validate(cmd_tbl_t *cmdtp, int flag, int argc,
28 				char * const argv[])
29 {
30 	char *hash_str = NULL;
31 	uintptr_t haddr;
32 	int ret;
33 	uintptr_t img_addr = 0;
34 	char buf[20];
35 
36 	if (argc < 2)
37 		return cmd_usage(cmdtp);
38 	else if (argc > 2)
39 		/* Second arg - Optional - Hash Str*/
40 		hash_str = argv[2];
41 
42 	/* First argument - header address -32/64bit */
43 	haddr = (uintptr_t)simple_strtoul(argv[1], NULL, 16);
44 
45 	/* With esbc_validate command, Image address must be
46 	 * part of header. So, the function is called
47 	 * by passing this argument as 0.
48 	 */
49 	ret = fsl_secboot_validate(haddr, hash_str, &img_addr);
50 
51 	/* Need to set "img_addr" even if validation failure.
52 	 * Required when SB_EN in RCW set and non-fatal error
53 	 * to continue U-Boot
54 	 */
55 	sprintf(buf, "%lx", img_addr);
56 	env_set("img_addr", buf);
57 
58 	if (ret)
59 		return 1;
60 
61 	printf("esbc_validate command successful\n");
62 	return 0;
63 }
64 
65 /***************************************************/
66 static char esbc_validate_help_text[] =
67 	"esbc_validate hdr_addr <hash_val> - Validates signature using\n"
68 	"                          RSA verification\n"
69 	"                          $hdr_addr Address of header of the image\n"
70 	"                          to be validated.\n"
71 	"                          $hash_val -Optional\n"
72 	"                          It provides Hash of public/srk key to be\n"
73 	"                          used to verify signature.\n";
74 
75 U_BOOT_CMD(
76 	esbc_validate,	3,	0,	do_esbc_validate,
77 	"Validates signature on a given image using RSA verification",
78 	esbc_validate_help_text
79 );
80 
81 U_BOOT_CMD(
82 	esbc_halt,	1,	0,	do_esbc_halt,
83 	"Put the core in spin loop (Secure Boot Only)",
84 	""
85 );
86 #endif
87