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 13 static int do_call(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) 14 { 15 struct arm_smccc_res res; 16 17 unsigned long fid; 18 19 unsigned long a1; 20 unsigned long a2; 21 unsigned long a3; 22 unsigned long a4; 23 unsigned long a5; 24 unsigned long a6; 25 unsigned long a7; 26 27 if (argc < 2) 28 return CMD_RET_USAGE; 29 30 fid = simple_strtoul(argv[1], NULL, 16); 31 32 a1 = argc > 2 ? simple_strtoul(argv[2], NULL, 16) : 0; 33 a2 = argc > 3 ? simple_strtoul(argv[3], NULL, 16) : 0; 34 a3 = argc > 4 ? simple_strtoul(argv[4], NULL, 16) : 0; 35 a4 = argc > 5 ? simple_strtoul(argv[5], NULL, 16) : 0; 36 a5 = argc > 6 ? simple_strtoul(argv[6], NULL, 16) : 0; 37 a6 = argc > 7 ? simple_strtoul(argv[7], NULL, 16) : 0; 38 a7 = argc > 8 ? simple_strtoul(argv[8], NULL, 16) : 0; 39 40 if (!strcmp(argv[0], "smc")) 41 arm_smccc_smc(fid, a1, a2, a3, a4, a5, a6, a7, &res); 42 else 43 arm_smccc_hvc(fid, a1, a2, a3, a4, a5, a6, a7, &res); 44 45 printf("Res: %ld %ld %ld %ld\n", res.a0, res.a1, res.a2, res.a3); 46 47 return 0; 48 } 49 50 #ifdef CONFIG_CMD_SMC 51 U_BOOT_CMD( 52 smc, 8, 2, do_call, 53 "Issue a Secure Monitor Call", 54 "<fid> [arg1 ... arg6] [id]\n" 55 " - fid Function ID\n" 56 " - arg SMC arguments, passed to X1-X6 (default to zero)\n" 57 " - id Secure OS ID / Session ID, passed to W7 (defaults to zero)\n" 58 ); 59 #endif 60 61 #ifdef CONFIG_CMD_HVC 62 U_BOOT_CMD( 63 hvc, 8, 2, do_call, 64 "Issue a Hypervisor Call", 65 "<fid> [arg1...arg7] [id]\n" 66 " - fid Function ID\n" 67 " - arg HVC arguments, passed to X1-X6 (default to zero)\n" 68 " - id Session ID, passed to W7 (defaults to zero)\n" 69 ); 70 #endif 71 72