File Content: arch.h /* SPDX-License-Identifier: GPL-2.0-only */ /* * arch/arm/include/asm/mach/arch.h * * Copyright (C) 2000 Russell King */ #include <linux/types.h> #ifndef __ASSEMBLY__ #include <linux/reboot.h> struct tag; struct pt_regs; struct smp_operations; #ifdef CONFIG_SMP #define smp_ops(ops) (&(ops)) #define smp_init_ops(ops) (&(ops)) #else #define smp_ops(ops) (struct smp_operations *)NULL #define smp_init_ops(ops) (bool (*)(void))NULL #endif struct machine_desc { unsigned int nr; /* architecture number */ const char *name; /* architecture name */ unsigned long atag_offset; /* tagged list (relative) */ const char *const *dt_compat; /* array of device tree * 'compatible' strings */ unsigned int nr_irqs; /* number of IRQs */ #ifdef CONFIG_ZONE_DMA phys_addr_t dma_zone_size; /* size of DMA-able area */ #endif unsigned int video_start; /* start of video RAM */ unsigned int video_end; /* end of video RAM */ unsigned char reserve_lp0 :1; /* never has lp0 */ unsigned char reserve_lp1 :1; /* never has lp1 */ unsigned char reserve_lp2 :1; /* never has lp2 */ enum reboot_mode reboot_mode; /* default restart mode */ unsigned l2c_aux_val; /* L2 cache aux value */ unsigned l2c_aux_mask; /* L2 cache aux mask */ void (*l2c_write_sec)(unsigned long, unsigned); const struct smp_operations *smp; /* SMP operations */ bool (*smp_init)(void); void (*fixup)(struct tag *, char **); void (*dt_fixup)(void); long long (*pv_fixup)(void); void (*reserve)(void);/* reserve mem blocks */ void (*map_io)(void);/* IO mapping function */ void (*init_early)(void); void (*init_irq)(void); void (*init_time)(void); void (*init_machine)(void); void (*init_late)(void); #ifdef CONFIG_GENERIC_IRQ_MULTI_HANDLER void (*handle_irq)(struct pt_regs *); #endif void (*restart)(enum reboot_mode, const char *); }; /* * Current machine - only accessible during boot. */ extern const struct machine_desc *machine_desc; /* * Machine type table - also only accessible during boot */ extern const struct machine_desc __arch_info_begin[], __arch_info_end[]; #define for_each_machine_desc(p) \ for (p = __arch_info_begin; p < __arch_info_end; p++) /* * Set of macros to define architecture features. This is built into * a table by the linker. */ #define MACHINE_START(_type,_name) \ static const struct machine_desc __mach_desc_##_type \ __used \ __section(".arch.info.init") = { \ .nr = MACH_TYPE_##_type, \ .name = _name, #define MACHINE_END \ }; #define DT_MACHINE_START(_name, _namestr) \ static const struct machine_desc __mach_desc_##_name \ __used \ __section(".arch.info.init") = { \ .nr = ~0, \ .name = _namestr, #endif Submit