/* 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__ */
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