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/* SPDX-License-Identifier: GPL-2.0 */
* Copyright (c) 2016 Google, Inc
#ifndef __ASM_MRC_COMMON_H
#define __ASM_MRC_COMMON_H
#include <linux/linkage.h>
* mrc_common_init() - Set up SDRAM
* This calls the memory reference code (MRC) to set up SDRAM
* @dev: Northbridge device
* @pei_data: Platform-specific data required by the MRC
* @use_asm_linkage: true if the call to MRC requires asmlinkage, false if it
* uses normal U-Boot calling
* @return 0 if OK, -ve on error
int mrc_common_init(struct udevice *dev, void *pei_data, bool use_asm_linkage);
asmlinkage void sdram_console_tx_byte(unsigned char byte);
int mrc_locate_spd(struct udevice *dev, int size, const void **spd_datap);
void report_memory_config(void);
* mrc_add_memory_area() - Add a new usable memory area to our list
* Note: @start and @end must not span the first 4GB boundary
* @info: Place to store memory info
* @start: Start of this memory area
* @end: End of this memory area + 1
int mrc_add_memory_area(struct memory_info *info, uint64_t start,
uint64_t end);
* This function looks for the highest region of memory lower than 4GB which
* has enough space for U-Boot where U-Boot is aligned on a page boundary.
* It overrides the default implementation found elsewhere which simply
* picks the end of ram, wherever that may be. The location of the stack,
* the relocation address, and how far U-Boot is moved by relocation are
* set in the global data structure.
ulong mrc_common_board_get_usable_ram_top(ulong total_size);
void mrc_common_dram_init_banksize(void);