mirror of
https://github.com/smaeul/u-boot.git
synced 2025-10-31 12:08:19 +00:00
03de305ec4
As part of bringing the master branch back in to next, we need to allow for all of these changes to exist here. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
45 lines
1.0 KiB
C
45 lines
1.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
|
|
/*
|
|
* Copyright (C) 2017, Bin Meng <bmeng.cn@gmail.com>
|
|
*/
|
|
|
|
#ifndef __EARLY_CMOS_H
|
|
#define __EARLY_CMOS_H
|
|
|
|
#include <linux/types.h>
|
|
|
|
/* CMOS actually resides in the RTC SRAM */
|
|
#define CMOS_IO_PORT 0x70
|
|
|
|
/**
|
|
* cmos_read8() - Get 8-bit data stored at the given address
|
|
*
|
|
* This reads from CMOS for the 8-bit data stored at the given address.
|
|
*
|
|
* @addr: RTC SRAM address
|
|
* @return: 8-bit data stored at the given address
|
|
*/
|
|
u8 cmos_read8(u8 addr);
|
|
|
|
/**
|
|
* cmos_read16() - Get 16-bit data stored at the given address
|
|
*
|
|
* This reads from CMOS for the 16-bit data stored at the given address.
|
|
*
|
|
* @addr: RTC SRAM address
|
|
* @return: 16-bit data stored at the given address
|
|
*/
|
|
u16 cmos_read16(u8 addr);
|
|
|
|
/**
|
|
* cmos_read32() - Get 32-bit data stored at the given address
|
|
*
|
|
* This reads from CMOS for the 32-bit data stored at the given address.
|
|
*
|
|
* @addr: RTC SRAM address
|
|
* @return: 32-bit data stored at the given address
|
|
*/
|
|
u32 cmos_read32(u8 addr);
|
|
|
|
#endif /* __EARLY_CMOS_H */
|