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