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 #define ARM_PSCI_VER_1_0 (0x00010000) 22 #define ARM_PSCI_VER_0_2 (0x00000002) 23 24 /* PSCI 0.1 interface */ 25 #define ARM_PSCI_FN_BASE 0x95c1ba5e 26 #define ARM_PSCI_FN(n) (ARM_PSCI_FN_BASE + (n)) 27 28 #define ARM_PSCI_FN_CPU_SUSPEND ARM_PSCI_FN(0) 29 #define ARM_PSCI_FN_CPU_OFF ARM_PSCI_FN(1) 30 #define ARM_PSCI_FN_CPU_ON ARM_PSCI_FN(2) 31 #define ARM_PSCI_FN_MIGRATE ARM_PSCI_FN(3) 32 33 #define ARM_PSCI_RET_SUCCESS 0 34 #define ARM_PSCI_RET_NI (-1) 35 #define ARM_PSCI_RET_INVAL (-2) 36 #define ARM_PSCI_RET_DENIED (-3) 37 #define ARM_PSCI_RET_ALREADY_ON (-4) 38 #define ARM_PSCI_RET_ON_PENDING (-5) 39 #define ARM_PSCI_RET_INTERNAL_FAILURE (-6) 40 #define ARM_PSCI_RET_NOT_PRESENT (-7) 41 #define ARM_PSCI_RET_DISABLED (-8) 42 #define ARM_PSCI_RET_INVALID_ADDRESS (-9) 43 44 /* PSCI 0.2 interface */ 45 #define ARM_PSCI_0_2_FN_BASE 0x84000000 46 #define ARM_PSCI_0_2_FN(n) (ARM_PSCI_0_2_FN_BASE + (n)) 47 48 #define ARM_PSCI_0_2_FN64_BASE 0xC4000000 49 #define ARM_PSCI_0_2_FN64(n) (ARM_PSCI_0_2_FN64_BASE + (n)) 50 51 #define ARM_PSCI_0_2_FN_PSCI_VERSION ARM_PSCI_0_2_FN(0) 52 #define ARM_PSCI_0_2_FN_CPU_SUSPEND ARM_PSCI_0_2_FN(1) 53 #define ARM_PSCI_0_2_FN_CPU_OFF ARM_PSCI_0_2_FN(2) 54 #define ARM_PSCI_0_2_FN_CPU_ON ARM_PSCI_0_2_FN(3) 55 #define ARM_PSCI_0_2_FN_AFFINITY_INFO ARM_PSCI_0_2_FN(4) 56 #define ARM_PSCI_0_2_FN_MIGRATE ARM_PSCI_0_2_FN(5) 57 #define ARM_PSCI_0_2_FN_MIGRATE_INFO_TYPE ARM_PSCI_0_2_FN(6) 58 #define ARM_PSCI_0_2_FN_MIGRATE_INFO_UP_CPU ARM_PSCI_0_2_FN(7) 59 #define ARM_PSCI_0_2_FN_SYSTEM_OFF ARM_PSCI_0_2_FN(8) 60 #define ARM_PSCI_0_2_FN_SYSTEM_RESET ARM_PSCI_0_2_FN(9) 61 62 #define ARM_PSCI_0_2_FN64_CPU_SUSPEND ARM_PSCI_0_2_FN64(1) 63 #define ARM_PSCI_0_2_FN64_CPU_ON ARM_PSCI_0_2_FN64(3) 64 #define ARM_PSCI_0_2_FN64_AFFINITY_INFO ARM_PSCI_0_2_FN64(4) 65 #define ARM_PSCI_0_2_FN64_MIGRATE ARM_PSCI_0_2_FN64(5) 66 #define ARM_PSCI_0_2_FN64_MIGRATE_INFO_UP_CPU ARM_PSCI_0_2_FN64(7) 67 68 /* PSCI 1.0 interface */ 69 #define ARM_PSCI_1_0_FN_PSCI_FEATURES ARM_PSCI_0_2_FN(10) 70 #define ARM_PSCI_1_0_FN_CPU_FREEZE ARM_PSCI_0_2_FN(11) 71 #define ARM_PSCI_1_0_FN_CPU_DEFAULT_SUSPEND ARM_PSCI_0_2_FN(12) 72 #define ARM_PSCI_1_0_FN_NODE_HW_STATE ARM_PSCI_0_2_FN(13) 73 #define ARM_PSCI_1_0_FN_SYSTEM_SUSPEND ARM_PSCI_0_2_FN(14) 74 #define ARM_PSCI_1_0_FN_SET_SUSPEND_MODE ARM_PSCI_0_2_FN(15) 75 #define ARM_PSCI_1_0_FN_STAT_RESIDENCY ARM_PSCI_0_2_FN(16) 76 #define ARM_PSCI_1_0_FN_STAT_COUNT ARM_PSCI_0_2_FN(17) 77 78 #define ARM_PSCI_1_0_FN64_CPU_DEFAULT_SUSPEND ARM_PSCI_0_2_FN64(12) 79 #define ARM_PSCI_1_0_FN64_NODE_HW_STATE ARM_PSCI_0_2_FN64(13) 80 #define ARM_PSCI_1_0_FN64_SYSTEM_SUSPEND ARM_PSCI_0_2_FN64(14) 81 #define ARM_PSCI_1_0_FN64_STAT_RESIDENCY ARM_PSCI_0_2_FN64(16) 82 #define ARM_PSCI_1_0_FN64_STAT_COUNT ARM_PSCI_0_2_FN64(17) 83 84 /* 1KB stack per core */ 85 #define ARM_PSCI_STACK_SHIFT 10 86 #define ARM_PSCI_STACK_SIZE (1 << ARM_PSCI_STACK_SHIFT) 87 88 /* PSCI affinity level state returned by AFFINITY_INFO */ 89 #define PSCI_AFFINITY_LEVEL_ON 0 90 #define PSCI_AFFINITY_LEVEL_OFF 1 91 #define PSCI_AFFINITY_LEVEL_ON_PENDING 2 92 93 #ifndef __ASSEMBLY__ 94 #include <asm/types.h> 95 96 /* These 2 helper functions assume cpu < CONFIG_ARMV7_PSCI_NR_CPUS */ 97 u32 psci_get_target_pc(int cpu); 98 void psci_save_target_pc(int cpu, u32 pc); 99 100 void psci_cpu_entry(void); 101 u32 psci_get_cpu_id(void); 102 void psci_cpu_off_common(void); 103 104 int psci_update_dt(void *fdt); 105 void psci_board_init(void); 106 int fdt_psci(void *fdt); 107 108 void psci_v7_flush_dcache_all(void); 109 #endif /* ! __ASSEMBLY__ */ 110 111 #endif /* __ARM_PSCI_H__ */ 112