kernel-fxtec-pro1x/arch/mips/include/asm/prom.h
Ralf Baechle 7d6168e576 MIPS: Add helper function to allow platforms to point at a DTB.
Add __dt_setup_arch() that can be called to load a builtin DT.
Additionally we add a macro to allow loading a specific symbol
from the __dtb_* section.

Signed-off-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3715/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-05-15 17:49:19 +02:00

54 lines
1.3 KiB
C

/*
* arch/mips/include/asm/prom.h
*
* Copyright (C) 2010 Cisco Systems Inc. <dediao@cisco.com>
*
* 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 __ASM_PROM_H
#define __ASM_PROM_H
#ifdef CONFIG_OF
#include <linux/bug.h>
#include <linux/io.h>
#include <linux/types.h>
#include <asm/bootinfo.h>
extern int early_init_dt_scan_memory_arch(unsigned long node,
const char *uname, int depth, void *data);
extern int reserve_mem_mach(unsigned long addr, unsigned long size);
extern void free_mem_mach(unsigned long addr, unsigned long size);
extern void device_tree_init(void);
static inline unsigned long pci_address_to_pio(phys_addr_t address)
{
/*
* The ioport address can be directly used by inX() / outX()
*/
BUG_ON(address > IO_SPACE_LIMIT);
return (unsigned long) address;
}
#define pci_address_to_pio pci_address_to_pio
struct boot_param_header;
extern void __dt_setup_arch(struct boot_param_header *bph);
#define dt_setup_arch(sym) \
({ \
extern struct boot_param_header __dtb_##sym##_begin; \
\
__dt_setup_arch(&__dtb_##sym##_begin); \
})
#else /* CONFIG_OF */
static inline void device_tree_init(void) { }
#endif /* CONFIG_OF */
#endif /* __ASM_PROM_H */