/* 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__ */