diff options
Diffstat (limited to 'arch/arm/include/asm/mach/arch.h')
-rw-r--r-- | arch/arm/include/asm/mach/arch.h | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/arch/arm/include/asm/mach/arch.h b/arch/arm/include/asm/mach/arch.h new file mode 100644 index 0000000000..2b18a25820 --- /dev/null +++ b/arch/arm/include/asm/mach/arch.h @@ -0,0 +1,95 @@ +/* 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); + 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 |