| /* 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. |
| */ |
| phys_size_t mrc_common_board_get_usable_ram_top(phys_size_t total_size); |
| |
| void mrc_common_dram_init_banksize(void); |
| |
| #endif |