1 /*
2  * K2HK: secure kernel command file
3  *
4  * (C) Copyright 2012-2014
5  *     Texas Instruments Incorporated, <www.ti.com>
6  *
7  * SPDX-License-Identifier:     GPL-2.0+
8  */
9 
10 #include <common.h>
11 #include <command.h>
12 #include <image.h>
13 #include <mach/mon.h>
14 asm(".arch_extension sec\n\t");
15 
16 static int do_mon_install(cmd_tbl_t *cmdtp, int flag, int argc,
17 			  char * const argv[])
18 {
19 	u32 addr, dpsc_base = 0x1E80000, freq, load_addr, size;
20 	int     rcode = 0;
21 	struct image_header *header;
22 
23 	if (argc < 2)
24 		return CMD_RET_USAGE;
25 
26 	freq = CONFIG_SYS_HZ_CLOCK;
27 
28 	addr = simple_strtoul(argv[1], NULL, 16);
29 
30 	header = (struct image_header *)addr;
31 
32 	if (image_get_magic(header) != IH_MAGIC) {
33 		printf("## Please update monitor image\n");
34 		return -EFAULT;
35 	}
36 
37 	load_addr = image_get_load(header);
38 	size = image_get_data_size(header);
39 	memcpy((void *)load_addr, (void *)(addr + sizeof(struct image_header)),
40 	       size);
41 
42 	rcode = mon_install(load_addr, dpsc_base, freq);
43 	printf("## installed monitor @ 0x%x, freq [%d], status %d\n",
44 	       load_addr, freq, rcode);
45 
46 	return 0;
47 }
48 
49 U_BOOT_CMD(mon_install, 2, 0, do_mon_install,
50 	   "Install boot kernel at 'addr'",
51 	   ""
52 );
53 
54 static void core_spin(void)
55 {
56 	while (1) {
57 		asm volatile (
58 			"dsb\n"
59 			"isb\n"
60 			"wfi\n"
61 		);
62 	}
63 }
64 
65 int do_mon_power(cmd_tbl_t *cmdtp, int flag, int argc,
66 			char * const argv[])
67 {
68 	int     rcode = 0, core_id, on;
69 	void (*fn)(void);
70 
71 	fn = core_spin;
72 
73 	if (argc < 3)
74 		return CMD_RET_USAGE;
75 
76 	core_id = simple_strtoul(argv[1], NULL, 16);
77 	on = simple_strtoul(argv[2], NULL, 16);
78 
79 	if (on)
80 		rcode = mon_power_on(core_id, fn);
81 	else
82 		rcode = mon_power_off(core_id);
83 
84 	if (on) {
85 		if (!rcode)
86 			printf("core %d powered on successfully\n", core_id);
87 		else
88 			printf("core %d power on failure\n", core_id);
89 	} else {
90 		printf("core %d powered off successfully\n", core_id);
91 	}
92 
93 	return 0;
94 }
95 
96 U_BOOT_CMD(mon_power, 3, 0, do_mon_power,
97 	   "Power On/Off secondary core",
98 	   "mon_power <coreid> <oper>\n"
99 	   "- coreid (1-3) and oper (1 - ON, 0 - OFF)\n"
100 	   ""
101 );
102