mirror of https://gitee.com/openkylin/linux.git
61 lines
1.7 KiB
C
61 lines
1.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
|
/*
|
|
* Copyright (C) 2016 Imagination Technologies
|
|
* Author: Paul Burton <paul.burton@mips.com>
|
|
*/
|
|
|
|
#ifndef __MIPS_ASM_YAMON_DT_H__
|
|
#define __MIPS_ASM_YAMON_DT_H__
|
|
|
|
#include <linux/types.h>
|
|
|
|
/**
|
|
* struct yamon_mem_region - Represents a contiguous range of physical RAM.
|
|
* @start: Start physical address.
|
|
* @size: Maximum size of region.
|
|
* @discard: Length of additional memory to discard after the region.
|
|
*/
|
|
struct yamon_mem_region {
|
|
phys_addr_t start;
|
|
phys_addr_t size;
|
|
phys_addr_t discard;
|
|
};
|
|
|
|
/**
|
|
* yamon_dt_append_cmdline() - Append YAMON-provided command line to /chosen
|
|
* @fdt: the FDT blob
|
|
*
|
|
* Write the YAMON-provided command line to the bootargs property of the
|
|
* /chosen node in @fdt.
|
|
*
|
|
* Return: 0 on success, else -errno
|
|
*/
|
|
extern __init int yamon_dt_append_cmdline(void *fdt);
|
|
|
|
/**
|
|
* yamon_dt_append_memory() - Append YAMON-provided memory info to /memory
|
|
* @fdt: the FDT blob
|
|
* @regions: zero size terminated array of physical memory regions
|
|
*
|
|
* Generate a /memory node in @fdt based upon memory size information provided
|
|
* by YAMON in its environment and the @regions array.
|
|
*
|
|
* Return: 0 on success, else -errno
|
|
*/
|
|
extern __init int yamon_dt_append_memory(void *fdt,
|
|
const struct yamon_mem_region *regions);
|
|
|
|
/**
|
|
* yamon_dt_serial_config() - Append YAMON-provided serial config to /chosen
|
|
* @fdt: the FDT blob
|
|
*
|
|
* Generate a stdout-path property in the /chosen node of @fdt, based upon
|
|
* information provided in the YAMON environment about the UART configuration
|
|
* of the system.
|
|
*
|
|
* Return: 0 on success, else -errno
|
|
*/
|
|
extern __init int yamon_dt_serial_config(void *fdt);
|
|
|
|
#endif /* __MIPS_ASM_YAMON_DT_H__ */
|