2 * Copyright (C) 2013-2014, Linaro Ltd.
3 * Author: Al Stone <al.stone@linaro.org>
4 * Author: Graeme Gregory <graeme.gregory@linaro.org>
5 * Author: Hanjun Guo <hanjun.guo@linaro.org>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation;
15 #include <linux/memblock.h>
16 #include <linux/psci.h>
18 #include <asm/cputype.h>
19 #include <asm/smp_plat.h>
21 /* Macros for consistency checks of the GICC subtable of MADT */
22 #define ACPI_MADT_GICC_LENGTH \
23 (acpi_gbl_FADT.header.revision < 6 ? 76 : 80)
25 #define BAD_MADT_GICC_ENTRY(entry, end) \
26 (!(entry) || (entry)->header.length != ACPI_MADT_GICC_LENGTH || \
27 (unsigned long)(entry) + ACPI_MADT_GICC_LENGTH > (end))
29 /* Basic configuration for ACPI */
31 /* ACPI table mapping after acpi_gbl_permanent_mmap is set */
32 static inline void __iomem *acpi_os_ioremap(acpi_physical_address phys,
36 * EFI's reserve_regions() call adds memory with the WB attribute
37 * to memblock via early_init_dt_add_memory_arch().
39 if (!memblock_is_memory(phys))
40 return ioremap(phys, size);
42 return ioremap_cache(phys, size);
44 #define acpi_os_ioremap acpi_os_ioremap
46 typedef u64 phys_cpuid_t;
47 #define PHYS_CPUID_INVALID INVALID_HWID
49 #define acpi_strict 1 /* No out-of-spec workarounds on ARM64 */
50 extern int acpi_disabled;
51 extern int acpi_noirq;
52 extern int acpi_pci_disabled;
54 static inline void disable_acpi(void)
57 acpi_pci_disabled = 1;
61 static inline void enable_acpi(void)
64 acpi_pci_disabled = 0;
69 * The ACPI processor driver for ACPI core code needs this macro
70 * to find out this cpu was already mapped (mapping from CPU hardware
71 * ID to CPU logical ID) or not.
73 #define cpu_physical_id(cpu) cpu_logical_map(cpu)
76 * It's used from ACPI core in kdump to boot UP system with SMP kernel,
77 * with this check the ACPI core will not override the CPU index
78 * obtained from GICC with 0 and not print some error message as well.
79 * Since MADT must provide at least one GICC structure for GIC
80 * initialization, CPU will be always available in MADT on ARM64.
82 static inline bool acpi_has_cpu_in_madt(void)
87 static inline void arch_fix_phys_package_id(int num, u32 slot) { }
88 void __init acpi_init_cpus(void);
91 static inline void acpi_init_cpus(void) { }
92 #endif /* CONFIG_ACPI */
94 #ifdef CONFIG_ARM64_ACPI_PARKING_PROTOCOL
95 bool acpi_parking_protocol_valid(int cpu);
97 acpi_set_mailbox_entry(int cpu, struct acpi_madt_generic_interrupt *processor);
99 static inline bool acpi_parking_protocol_valid(int cpu) { return false; }
101 acpi_set_mailbox_entry(int cpu, struct acpi_madt_generic_interrupt *processor)
105 static inline const char *acpi_get_enable_method(int cpu)
107 if (acpi_psci_present())
110 if (acpi_parking_protocol_valid(cpu))
111 return "parking-protocol";
116 #ifdef CONFIG_ACPI_APEI
117 pgprot_t arch_apei_get_mem_attribute(phys_addr_t addr);
120 #ifdef CONFIG_ACPI_NUMA
121 int arm64_acpi_numa_init(void);
122 int acpi_numa_get_nid(unsigned int cpu, u64 hwid);
124 static inline int arm64_acpi_numa_init(void) { return -ENOSYS; }
125 static inline int acpi_numa_get_nid(unsigned int cpu, u64 hwid) { return NUMA_NO_NODE; }
126 #endif /* CONFIG_ACPI_NUMA */
128 #define ACPI_TABLE_UPGRADE_MAX_PHYS MEMBLOCK_ALLOC_ACCESSIBLE
130 #endif /*_ASM_ACPI_H*/