mirror of
https://github.com/u-boot/u-boot.git
synced 2024-12-27 05:33:27 +08:00
c20ee0ed07
When using 32-bit addresses dtoc works correctly. For 64-bit addresses it does not since it ignores the #address-cells and #size-cells properties. Update the tool to use fdt64_t as the element type for reg properties when either the address or size is larger than one cell. Use the correct value so that C code can obtain the information from the device tree easily. Alos create a new type, fdt_val_t, which is defined to either fdt32_t or fdt64_t depending on the word size of the machine. This type corresponds to fdt_addr_t and fdt_size_t. Unfortunately we cannot just use those types since they are defined to phys_addr_t and phys_size_t which use 'unsigned long' in the 32-bit case, rather than 'unsigned int'. Add tests for the four combinations of address and size values (32/32, 64/64, 32/64, 64/32). Also update existing uses for rk3399 and rk3368 which now need to use the new fdt_val_t type. Signed-off-by: Simon Glass <sjg@chromium.org> Suggested-by: Heiko Stuebner <heiko@sntech.de> Reported-by: Kever Yang <kever.yang@rock-chips.com> Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com> Tested-by: Kever Yang <kever.yang@rock-chips.com>
89 lines
2.3 KiB
C
89 lines
2.3 KiB
C
/*
|
|
* Copyright (c) 2015 Google, Inc
|
|
* Written by Simon Glass <sjg@chromium.org>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#ifndef __REGMAP_H
|
|
#define __REGMAP_H
|
|
|
|
/**
|
|
* struct regmap_range - a register map range
|
|
*
|
|
* @start: Start address
|
|
* @size: Size in bytes
|
|
*/
|
|
struct regmap_range {
|
|
ulong start;
|
|
ulong size;
|
|
};
|
|
|
|
/**
|
|
* struct regmap - a way of accessing hardware/bus registers
|
|
*
|
|
* @base: Base address of register map
|
|
* @range_count: Number of ranges available within the map
|
|
* @range: Pointer to the list of ranges, allocated if @range_count > 1
|
|
* @base_range: If @range_count is <= 1, @range points here
|
|
*/
|
|
struct regmap {
|
|
phys_addr_t base;
|
|
int range_count;
|
|
struct regmap_range *range, base_range;
|
|
};
|
|
|
|
/*
|
|
* Interface to provide access to registers either through a direct memory
|
|
* bus or through a peripheral bus like I2C, SPI.
|
|
*/
|
|
int regmap_write(struct regmap *map, uint offset, uint val);
|
|
int regmap_read(struct regmap *map, uint offset, uint *valp);
|
|
|
|
#define regmap_write32(map, ptr, member, val) \
|
|
regmap_write(map, (uint32_t *)(ptr)->member - (uint32_t *)(ptr), val)
|
|
|
|
#define regmap_read32(map, ptr, member, valp) \
|
|
regmap_read(map, (uint32_t *)(ptr)->member - (uint32_t *)(ptr), valp)
|
|
|
|
/**
|
|
* regmap_init_mem() - Set up a new register map that uses memory access
|
|
*
|
|
* Use regmap_uninit() to free it.
|
|
*
|
|
* @dev: Device that uses this map
|
|
* @mapp: Returns allocated map
|
|
*/
|
|
int regmap_init_mem(struct udevice *dev, struct regmap **mapp);
|
|
|
|
/**
|
|
* regmap_init_mem_platdata() - Set up a new memory register map for of-platdata
|
|
*
|
|
* This creates a new regmap with a list of regions passed in, rather than
|
|
* using the device tree. It only supports 32-bit machines.
|
|
*
|
|
* Use regmap_uninit() to free it.
|
|
*
|
|
* @dev: Device that uses this map
|
|
* @reg: List of address, size pairs
|
|
* @count: Number of pairs (e.g. 1 if the regmap has a single entry)
|
|
* @mapp: Returns allocated map
|
|
*/
|
|
int regmap_init_mem_platdata(struct udevice *dev, fdt_val_t *reg, int count,
|
|
struct regmap **mapp);
|
|
|
|
/**
|
|
* regmap_get_range() - Obtain the base memory address of a regmap range
|
|
*
|
|
* @map: Regmap to query
|
|
* @range_num: Range to look up
|
|
*/
|
|
void *regmap_get_range(struct regmap *map, unsigned int range_num);
|
|
|
|
/**
|
|
* regmap_uninit() - free a previously inited regmap
|
|
*/
|
|
int regmap_uninit(struct regmap *map);
|
|
|
|
#endif
|