1 /* 2 * Copyright (C) 2013 - ARM Ltd 3 * Author: Marc Zyngier <marc.zyngier@arm.com> 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License version 2 as 7 * published by the Free Software Foundation. 8 * 9 * This program is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program. If not, see <http://www.gnu.org/licenses/>. 16 */ 17 18 #ifndef __ARM_PSCI_H__ 19 #define __ARM_PSCI_H__ 20 21 /* PSCI 0.1 interface */ 22 #define ARM_PSCI_FN_BASE 0x95c1ba5e 23 #define ARM_PSCI_FN(n) (ARM_PSCI_FN_BASE + (n)) 24 25 #define ARM_PSCI_FN_CPU_SUSPEND ARM_PSCI_FN(0) 26 #define ARM_PSCI_FN_CPU_OFF ARM_PSCI_FN(1) 27 #define ARM_PSCI_FN_CPU_ON ARM_PSCI_FN(2) 28 #define ARM_PSCI_FN_MIGRATE ARM_PSCI_FN(3) 29 30 #define ARM_PSCI_RET_SUCCESS 0 31 #define ARM_PSCI_RET_NI (-1) 32 #define ARM_PSCI_RET_INVAL (-2) 33 #define ARM_PSCI_RET_DENIED (-3) 34 35 /* PSCI 0.2 interface */ 36 #define ARM_PSCI_0_2_FN_BASE 0x84000000 37 #define ARM_PSCI_0_2_FN(n) (ARM_PSCI_0_2_FN_BASE + (n)) 38 39 #define ARM_PSCI_0_2_FN_PSCI_VERSION ARM_PSCI_0_2_FN(0) 40 #define ARM_PSCI_0_2_FN_CPU_SUSPEND ARM_PSCI_0_2_FN(1) 41 #define ARM_PSCI_0_2_FN_CPU_OFF ARM_PSCI_0_2_FN(2) 42 #define ARM_PSCI_0_2_FN_CPU_ON ARM_PSCI_0_2_FN(3) 43 #define ARM_PSCI_0_2_FN_AFFINITY_INFO ARM_PSCI_0_2_FN(4) 44 #define ARM_PSCI_0_2_FN_MIGRATE ARM_PSCI_0_2_FN(5) 45 #define ARM_PSCI_0_2_FN_MIGRATE_INFO_TYPE ARM_PSCI_0_2_FN(6) 46 #define ARM_PSCI_0_2_FN_MIGRATE_INFO_UP_CPU ARM_PSCI_0_2_FN(7) 47 #define ARM_PSCI_0_2_FN_SYSTEM_OFF ARM_PSCI_0_2_FN(8) 48 #define ARM_PSCI_0_2_FN_SYSTEM_RESET ARM_PSCI_0_2_FN(9) 49 50 /* 1KB stack per core */ 51 #define ARM_PSCI_STACK_SHIFT 10 52 #define ARM_PSCI_STACK_SIZE (1 << ARM_PSCI_STACK_SHIFT) 53 54 #ifndef __ASSEMBLY__ 55 #include <asm/types.h> 56 57 /* These 2 helper functions assume cpu < CONFIG_ARMV7_PSCI_NR_CPUS */ 58 u32 psci_get_target_pc(int cpu); 59 void psci_save_target_pc(int cpu, u32 pc); 60 61 void psci_cpu_entry(void); 62 u32 psci_get_cpu_id(void); 63 void psci_cpu_off_common(void); 64 65 int psci_update_dt(void *fdt); 66 void psci_board_init(void); 67 int fdt_psci(void *fdt); 68 #endif /* ! __ASSEMBLY__ */ 69 70 #endif /* __ARM_PSCI_H__ */ 71