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u-boot/arch/x86/include/asm/mrc_common.h

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SPDX: Convert all of our single license tags to Linux Kernel style When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-06 21:58:06 +00:00
/* SPDX-License-Identifier: GPL-2.0 */
x86: Add common SDRAM-init code The code to call the memory reference code is common to several Intel CPUs. Add common code for performing this init. Intel calls this 'Pre-EFI-Init' (PEI), where EFI stands for Extensible Firmware Interface. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2016-03-16 13:44:37 +00:00
/*
* 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
doc: replace @return by Return: Sphinx expects Return: and not @return to indicate a return value. find . -name '*.c' -exec \ sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \; find . -name '*.h' -exec \ sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \; Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
2022-01-19 17:05:50 +00:00
* Return: 0 if OK, -ve on error
x86: Add common SDRAM-init code The code to call the memory reference code is common to several Intel CPUs. Add common code for performing this init. Intel calls this 'Pre-EFI-Init' (PEI), where EFI stands for Extensible Firmware Interface. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2016-03-16 13:44:37 +00:00
*/
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);
#endif
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