xref: /openbmc/u-boot/arch/arm/include/asm/psci.h (revision e8f80a5a)
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 3 helper functions assume cpu < CONFIG_ARMV7_PSCI_NR_CPUS */
97 u32 psci_get_target_pc(int cpu);
98 u32 psci_get_context_id(int cpu);
99 void psci_save(int cpu, u32 pc, u32 context_id);
100 
101 void psci_cpu_entry(void);
102 u32 psci_get_cpu_id(void);
103 void psci_cpu_off_common(void);
104 
105 int psci_update_dt(void *fdt);
106 void psci_board_init(void);
107 int fdt_psci(void *fdt);
108 
109 void psci_v7_flush_dcache_all(void);
110 #endif /* ! __ASSEMBLY__ */
111 
112 #endif /* __ARM_PSCI_H__ */
113