smccc.c
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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2018
* Michalis Pappas <mpappas@fastmail.fm>
*/
#include <asm/psci.h>
#include <common.h>
#include <command.h>
#include <linux/arm-smccc.h>
#include <linux/compiler.h>
#include <linux/psci.h>
static int do_call(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
struct arm_smccc_res res;
unsigned long fid;
unsigned long a1;
unsigned long a2;
unsigned long a3;
unsigned long a4;
unsigned long a5;
unsigned long a6;
unsigned long a7;
if (argc < 2)
return CMD_RET_USAGE;
fid = hextoul(argv[1], NULL);
a1 = argc > 2 ? hextoul(argv[2], NULL) : 0;
a2 = argc > 3 ? hextoul(argv[3], NULL) : 0;
a3 = argc > 4 ? hextoul(argv[4], NULL) : 0;
a4 = argc > 5 ? hextoul(argv[5], NULL) : 0;
a5 = argc > 6 ? hextoul(argv[6], NULL) : 0;
a6 = argc > 7 ? hextoul(argv[7], NULL) : 0;
a7 = argc > 8 ? hextoul(argv[8], NULL) : 0;
if (!strcmp(argv[0], "smc"))
arm_smccc_smc(fid, a1, a2, a3, a4, a5, a6, a7, &res);
else
arm_smccc_hvc(fid, a1, a2, a3, a4, a5, a6, a7, &res);
printf("Res: %ld %ld %ld %ld\n", res.a0, res.a1, res.a2, res.a3);
return 0;
}
#ifdef CONFIG_CMD_SMC
U_BOOT_CMD(
smc, 9, 2, do_call,
"Issue a Secure Monitor Call",
"<fid> [arg1 ... arg6] [id]\n"
" - fid Function ID\n"
" - arg SMC arguments, passed to X1-X6 (default to zero)\n"
" - id Secure OS ID / Session ID, passed to W7 (defaults to zero)\n"
);
#endif
#ifdef CONFIG_CMD_HVC
U_BOOT_CMD(
hvc, 9, 2, do_call,
"Issue a Hypervisor Call",
"<fid> [arg1...arg6] [id]\n"
" - fid Function ID\n"
" - arg HVC arguments, passed to X1-X6 (default to zero)\n"
" - id Session ID, passed to W7 (defaults to zero)\n"
);
#endif