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/*
* Copyright (c) 2015 Google, Inc
* Written by Simon Glass <sjg@chromium.org>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef __pch_h
#define __pch_h
enum pch_version {
PCHV_UNKNOWN,
PCHV_7,
PCHV_9,
};
#define PCH_RCBA 0xf0
#define BIOS_CTRL_BIOSWE BIT(0)
/* Operations for the Platform Controller Hub */
struct pch_ops {
/**
* get_sbase() - get the address of SPI base
*
* @dev: PCH device to check
* @sbasep: Returns address of SPI base if available, else 0
* @return 0 if OK, -ve on error (e.g. there is no SPI base)
*/
int (*get_sbase)(struct udevice *dev, ulong *sbasep);
/**
* get_version() - get the PCH version
*
* @return version, or -ENOSYS if unknown
*/
enum pch_version (*get_version)(struct udevice *dev);
/**
* set_spi_protect() - set whether SPI flash is protected or not
*
* @dev: PCH device to adjust
* @protect: true to protect, false to unprotect
*
* @return 0 on success, -ENOSYS if not implemented
*/
int (*set_spi_protect)(struct udevice *dev, bool protect);
};
#define pch_get_ops(dev) ((struct pch_ops *)(dev)->driver->ops)
/**
* pch_get_sbase() - get the address of SPI base
*
* @dev: PCH device to check
* @sbasep: Returns address of SPI base if available, else 0
* @return 0 if OK, -ve on error (e.g. there is no SPI base)
*/
int pch_get_sbase(struct udevice *dev, ulong *sbasep);
/**
* pch_get_version() - get the PCH version
*
* @return version, or -ENOSYS if unknown
*/
enum pch_version pch_get_version(struct udevice *dev);
/**
* set_spi_protect() - set whether SPI flash is protected or not
*
* @dev: PCH device to adjust
* @protect: true to protect, false to unprotect
*
* @return 0 on success, -ENOSYS if not implemented
*/
int pch_set_spi_protect(struct udevice *dev, bool protect);
#endif
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