1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Copyright 2018
4 * Michalis Pappas <mpappas@fastmail.fm>
5 */
6#include <asm/psci.h>
7#include <common.h>
8#include <command.h>
9#include <linux/arm-smccc.h>
10#include <linux/compiler.h>
11#include <linux/psci.h>
12
13static int do_call(struct cmd_tbl *cmdtp, int flag, int argc,
14		   char *const argv[])
15{
16	struct arm_smccc_res res;
17
18	unsigned long fid;
19
20	unsigned long a1;
21	unsigned long a2;
22	unsigned long a3;
23	unsigned long a4;
24	unsigned long a5;
25	unsigned long a6;
26	unsigned long a7;
27
28	if (argc < 2)
29		return CMD_RET_USAGE;
30
31	fid = hextoul(argv[1], NULL);
32
33	a1 = argc > 2 ? hextoul(argv[2], NULL) : 0;
34	a2 = argc > 3 ? hextoul(argv[3], NULL) : 0;
35	a3 = argc > 4 ? hextoul(argv[4], NULL) : 0;
36	a4 = argc > 5 ? hextoul(argv[5], NULL) : 0;
37	a5 = argc > 6 ? hextoul(argv[6], NULL) : 0;
38	a6 = argc > 7 ? hextoul(argv[7], NULL) : 0;
39	a7 = argc > 8 ? hextoul(argv[8], NULL) : 0;
40
41	if (!strcmp(argv[0], "smc"))
42		arm_smccc_smc(fid, a1, a2, a3, a4, a5, a6, a7, &res);
43	else
44		arm_smccc_hvc(fid, a1, a2, a3, a4, a5, a6, a7, &res);
45
46	printf("Res:  0x%lx 0x%lx 0x%lx 0x%lx\n", res.a0, res.a1, res.a2, res.a3);
47
48	return 0;
49}
50
51#ifdef CONFIG_CMD_SMC
52U_BOOT_CMD(
53	smc,	9,		2,	do_call,
54	"Issue a Secure Monitor Call",
55	"<fid> [arg1 ... arg6] [id]\n"
56	"  - fid Function ID\n"
57	"  - arg SMC arguments, passed to X1-X6 (default to zero)\n"
58	"  - id  Secure OS ID / Session ID, passed to W7 (defaults to zero)\n"
59);
60#endif
61
62#ifdef CONFIG_CMD_HVC
63U_BOOT_CMD(
64	hvc,	9,		2,	do_call,
65	"Issue a Hypervisor Call",
66	"<fid> [arg1...arg6] [id]\n"
67	"  - fid Function ID\n"
68	"  - arg HVC arguments, passed to X1-X6 (default to zero)\n"
69	"  - id  Session ID, passed to W7 (defaults to zero)\n"
70);
71#endif
72