mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-25 03:18:51 +09:00
![Simon Glass](/assets/img/avatar_default.png)
At some point we may need to distinguish between different types of PCHs, but for existing supported platforms we only need to worry about version 7 and version 9 bridges. Add a driver for the PCH7. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
79 lines
1.8 KiB
C
79 lines
1.8 KiB
C
/*
|
|
* 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
|