mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-11 07:34:31 +00:00
38d21b418d
Add functions to access addresses in the device tree. These are brought in from Linux 4.10. Also fix up the header guard for fdtaddr.h to avoid confusion. Signed-off-by: Simon Glass <sjg@chromium.org>
110 lines
3 KiB
C
110 lines
3 KiB
C
/*
|
|
* Copyright (c) 2017 Google, Inc
|
|
*
|
|
* (C) Copyright 2012
|
|
* Pavel Herrmann <morpheus.ibis@gmail.com>
|
|
* Marek Vasut <marex@denx.de>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#ifndef _DM_FDTADDR_H
|
|
#define _DM_FDTADDR_H
|
|
|
|
#include <fdtdec.h>
|
|
|
|
struct udevice;
|
|
|
|
/**
|
|
* devfdt_get_addr() - Get the reg property of a device
|
|
*
|
|
* @dev: Pointer to a device
|
|
*
|
|
* @return addr
|
|
*/
|
|
fdt_addr_t devfdt_get_addr(struct udevice *dev);
|
|
|
|
/**
|
|
* devfdt_get_addr_ptr() - Return pointer to the address of the reg property
|
|
* of a device
|
|
*
|
|
* @dev: Pointer to a device
|
|
*
|
|
* @return Pointer to addr, or NULL if there is no such property
|
|
*/
|
|
void *devfdt_get_addr_ptr(struct udevice *dev);
|
|
|
|
/**
|
|
* devfdt_map_physmem() - Read device address from reg property of the
|
|
* device node and map the address into CPU address
|
|
* space.
|
|
*
|
|
* @dev: Pointer to device
|
|
* @size: size of the memory to map
|
|
*
|
|
* @return mapped address, or NULL if the device does not have reg
|
|
* property.
|
|
*/
|
|
void *devfdt_map_physmem(struct udevice *dev, unsigned long size);
|
|
|
|
/**
|
|
* devfdt_get_addr_index() - Get the indexed reg property of a device
|
|
*
|
|
* @dev: Pointer to a device
|
|
* @index: the 'reg' property can hold a list of <addr, size> pairs
|
|
* and @index is used to select which one is required
|
|
*
|
|
* @return addr
|
|
*/
|
|
fdt_addr_t devfdt_get_addr_index(struct udevice *dev, int index);
|
|
|
|
/**
|
|
* devfdt_get_addr_size_index() - Get the indexed reg property of a device
|
|
*
|
|
* Returns the address and size specified in the 'reg' property of a device.
|
|
*
|
|
* @dev: Pointer to a device
|
|
* @index: the 'reg' property can hold a list of <addr, size> pairs
|
|
* and @index is used to select which one is required
|
|
* @size: Pointer to size varible - this function returns the size
|
|
* specified in the 'reg' property here
|
|
*
|
|
* @return addr
|
|
*/
|
|
fdt_addr_t devfdt_get_addr_size_index(struct udevice *dev, int index,
|
|
fdt_size_t *size);
|
|
|
|
/**
|
|
* devfdt_get_addr_name() - Get the reg property of a device, indexed by name
|
|
*
|
|
* @dev: Pointer to a device
|
|
* @name: the 'reg' property can hold a list of <addr, size> pairs, with the
|
|
* 'reg-names' property providing named-based identification. @index
|
|
* indicates the value to search for in 'reg-names'.
|
|
*
|
|
* @return addr
|
|
*/
|
|
fdt_addr_t devfdt_get_addr_name(struct udevice *dev, const char *name);
|
|
|
|
/**
|
|
* dm_set_translation_offset() - Set translation offset
|
|
* @offs: Translation offset
|
|
*
|
|
* Some platforms need a special address translation. Those
|
|
* platforms (e.g. mvebu in SPL) can configure a translation
|
|
* offset in the DM by calling this function. It will be
|
|
* added to all addresses returned in devfdt_get_addr().
|
|
*/
|
|
void dm_set_translation_offset(fdt_addr_t offs);
|
|
|
|
/**
|
|
* dm_get_translation_offset() - Get translation offset
|
|
*
|
|
* This function returns the translation offset that can
|
|
* be configured by calling dm_set_translation_offset().
|
|
*
|
|
* @return translation offset for the device address (0 as default).
|
|
*/
|
|
fdt_addr_t dm_get_translation_offset(void);
|
|
|
|
#endif
|