| /* |
| * arch/metag/include/asm/mach/arch.h |
| * |
| * Copyright (C) 2012 Imagination Technologies Ltd. |
| * |
| * based on the ARM version: |
| * Copyright (C) 2000 Russell King |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| */ |
| |
| #ifndef _METAG_MACH_ARCH_H_ |
| #define _METAG_MACH_ARCH_H_ |
| |
| #include <linux/stddef.h> |
| |
| #include <asm/clock.h> |
| |
| /** |
| * struct machine_desc - Describes a board controlled by a Meta. |
| * @name: Board/SoC name. |
| * @dt_compat: Array of device tree 'compatible' strings. |
| * @clocks: Clock callbacks. |
| * |
| * @nr_irqs: Maximum number of IRQs. |
| * If 0, defaults to NR_IRQS in asm-generic/irq.h. |
| * |
| * @init_early: Early init callback. |
| * @init_irq: IRQ init callback for setting up IRQ controllers. |
| * @init_machine: Arch init callback for setting up devices. |
| * @init_late: Late init callback. |
| * |
| * This structure is provided by each board which can be controlled by a Meta. |
| * It is chosen by matching the compatible strings in the device tree provided |
| * by the bootloader with the strings in @dt_compat, and sets up any aspects of |
| * the machine that aren't configured with device tree (yet). |
| */ |
| struct machine_desc { |
| const char *name; |
| const char **dt_compat; |
| struct meta_clock_desc *clocks; |
| |
| unsigned int nr_irqs; |
| |
| void (*init_early)(void); |
| void (*init_irq)(void); |
| void (*init_machine)(void); |
| void (*init_late)(void); |
| }; |
| |
| /* |
| * Current machine - only accessible during boot. |
| */ |
| extern const struct machine_desc *machine_desc; |
| |
| /* |
| * Machine type table - also only accessible during boot |
| */ |
| extern 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++) |
| |
| static inline struct machine_desc *default_machine_desc(void) |
| { |
| /* the default machine is the last one linked in */ |
| if (__arch_info_end - 1 < __arch_info_begin) |
| return NULL; |
| return __arch_info_end - 1; |
| } |
| |
| /* |
| * 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 \ |
| __attribute__((__section__(".arch.info.init"))) = { \ |
| .name = _name, |
| |
| #define MACHINE_END \ |
| }; |
| |
| #endif /* _METAG_MACH_ARCH_H_ */ |