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 #ifndef __ASSEMBLY__ 22 #include <linux/bitops.h> 23 #endif 24 25 #define ARM_PSCI_VER_1_0 (0x00010000) 26 #define ARM_PSCI_VER_0_2 (0x00000002) 27 28 /* PSCI 0.1 interface */ 29 #define ARM_PSCI_FN_BASE 0x95c1ba5e 30 #define ARM_PSCI_FN(n) (ARM_PSCI_FN_BASE + (n)) 31 32 #define ARM_PSCI_FN_CPU_SUSPEND ARM_PSCI_FN(0) 33 #define ARM_PSCI_FN_CPU_OFF ARM_PSCI_FN(1) 34 #define ARM_PSCI_FN_CPU_ON ARM_PSCI_FN(2) 35 #define ARM_PSCI_FN_MIGRATE ARM_PSCI_FN(3) 36 37 #define ARM_PSCI_RET_SUCCESS 0 38 #define ARM_PSCI_RET_NI (-1) 39 #define ARM_PSCI_RET_INVAL (-2) 40 #define ARM_PSCI_RET_DENIED (-3) 41 #define ARM_PSCI_RET_ALREADY_ON (-4) 42 #define ARM_PSCI_RET_ON_PENDING (-5) 43 #define ARM_PSCI_RET_INTERNAL_FAILURE (-6) 44 #define ARM_PSCI_RET_NOT_PRESENT (-7) 45 #define ARM_PSCI_RET_DISABLED (-8) 46 #define ARM_PSCI_RET_INVALID_ADDRESS (-9) 47 48 /* PSCI 0.2 interface */ 49 #define ARM_PSCI_0_2_FN_BASE 0x84000000 50 #define ARM_PSCI_0_2_FN(n) (ARM_PSCI_0_2_FN_BASE + (n)) 51 52 #define ARM_PSCI_0_2_FN64_BASE 0xC4000000 53 #define ARM_PSCI_0_2_FN64(n) (ARM_PSCI_0_2_FN64_BASE + (n)) 54 55 #define ARM_PSCI_0_2_FN_PSCI_VERSION ARM_PSCI_0_2_FN(0) 56 #define ARM_PSCI_0_2_FN_CPU_SUSPEND ARM_PSCI_0_2_FN(1) 57 #define ARM_PSCI_0_2_FN_CPU_OFF ARM_PSCI_0_2_FN(2) 58 #define ARM_PSCI_0_2_FN_CPU_ON ARM_PSCI_0_2_FN(3) 59 #define ARM_PSCI_0_2_FN_AFFINITY_INFO ARM_PSCI_0_2_FN(4) 60 #define ARM_PSCI_0_2_FN_MIGRATE ARM_PSCI_0_2_FN(5) 61 #define ARM_PSCI_0_2_FN_MIGRATE_INFO_TYPE ARM_PSCI_0_2_FN(6) 62 #define ARM_PSCI_0_2_FN_MIGRATE_INFO_UP_CPU ARM_PSCI_0_2_FN(7) 63 #define ARM_PSCI_0_2_FN_SYSTEM_OFF ARM_PSCI_0_2_FN(8) 64 #define ARM_PSCI_0_2_FN_SYSTEM_RESET ARM_PSCI_0_2_FN(9) 65 66 #define ARM_PSCI_0_2_FN64_CPU_SUSPEND ARM_PSCI_0_2_FN64(1) 67 #define ARM_PSCI_0_2_FN64_CPU_ON ARM_PSCI_0_2_FN64(3) 68 #define ARM_PSCI_0_2_FN64_AFFINITY_INFO ARM_PSCI_0_2_FN64(4) 69 #define ARM_PSCI_0_2_FN64_MIGRATE ARM_PSCI_0_2_FN64(5) 70 #define ARM_PSCI_0_2_FN64_MIGRATE_INFO_UP_CPU ARM_PSCI_0_2_FN64(7) 71 #define ARM_PSCI_0_2_FN64_SYSTEM_RESET2 ARM_PSCI_0_2_FN64(18) 72 73 /* PSCI 1.0 interface */ 74 #define ARM_PSCI_1_0_FN_PSCI_FEATURES ARM_PSCI_0_2_FN(10) 75 #define ARM_PSCI_1_0_FN_CPU_FREEZE ARM_PSCI_0_2_FN(11) 76 #define ARM_PSCI_1_0_FN_CPU_DEFAULT_SUSPEND ARM_PSCI_0_2_FN(12) 77 #define ARM_PSCI_1_0_FN_NODE_HW_STATE ARM_PSCI_0_2_FN(13) 78 #define ARM_PSCI_1_0_FN_SYSTEM_SUSPEND ARM_PSCI_0_2_FN(14) 79 #define ARM_PSCI_1_0_FN_SET_SUSPEND_MODE ARM_PSCI_0_2_FN(15) 80 #define ARM_PSCI_1_0_FN_STAT_RESIDENCY ARM_PSCI_0_2_FN(16) 81 #define ARM_PSCI_1_0_FN_STAT_COUNT ARM_PSCI_0_2_FN(17) 82 83 #define ARM_PSCI_1_0_FN64_CPU_DEFAULT_SUSPEND ARM_PSCI_0_2_FN64(12) 84 #define ARM_PSCI_1_0_FN64_NODE_HW_STATE ARM_PSCI_0_2_FN64(13) 85 #define ARM_PSCI_1_0_FN64_SYSTEM_SUSPEND ARM_PSCI_0_2_FN64(14) 86 #define ARM_PSCI_1_0_FN64_STAT_RESIDENCY ARM_PSCI_0_2_FN64(16) 87 #define ARM_PSCI_1_0_FN64_STAT_COUNT ARM_PSCI_0_2_FN64(17) 88 89 /* 1KB stack per core */ 90 #define ARM_PSCI_STACK_SHIFT 10 91 #define ARM_PSCI_STACK_SIZE (1 << ARM_PSCI_STACK_SHIFT) 92 93 /* PSCI affinity level state returned by AFFINITY_INFO */ 94 #define PSCI_AFFINITY_LEVEL_ON 0 95 #define PSCI_AFFINITY_LEVEL_OFF 1 96 #define PSCI_AFFINITY_LEVEL_ON_PENDING 2 97 98 #define PSCI_RESET2_TYPE_VENDOR_SHIFT 31 99 #define PSCI_RESET2_TYPE_VENDOR BIT(PSCI_RESET2_TYPE_VENDOR_SHIFT) 100 101 #ifndef __ASSEMBLY__ 102 #include <asm/types.h> 103 #include <linux/bitops.h> 104 105 /* These 3 helper functions assume cpu < CONFIG_ARMV7_PSCI_NR_CPUS */ 106 u32 psci_get_target_pc(int cpu); 107 u32 psci_get_context_id(int cpu); 108 void psci_save(int cpu, u32 pc, u32 context_id); 109 110 void psci_cpu_entry(void); 111 u32 psci_get_cpu_id(void); 112 void psci_cpu_off_common(void); 113 114 int psci_update_dt(void *fdt); 115 void psci_board_init(void); 116 int fdt_psci(void *fdt); 117 118 void psci_v7_flush_dcache_all(void); 119 #endif /* ! __ASSEMBLY__ */ 120 121 #endif /* __ARM_PSCI_H__ */ 122