include/pch.h

   1 /*
   2  * Copyright (c) 2015 Google, Inc
   3  * Written by Simon Glass <sjg@chromium.org>
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #ifndef __pch_h
   9 #define __pch_h
  10
  11 #define PCH_RCBA                0xf0
  12
  13 #define BIOS_CTRL_BIOSWE        BIT(0)
  14
  15 /* Operations for the Platform Controller Hub */
  16 struct pch_ops {
  17         /**
  18          * get_sbase() - get the address of SPI base
  19          *
  20          * @dev:        PCH device to check
  21          * @sbasep:     Returns address of SPI base if available, else 0
  22          * @return 0 if OK, -ve on error (e.g. there is no SPI base)
  23          */
  24         int (*get_sbase)(struct udevice *dev, ulong *sbasep);
  25
  26         /**
  27          * set_spi_protect() - set whether SPI flash is protected or not
  28          *
  29          * @dev:        PCH device to adjust
  30          * @protect:    true to protect, false to unprotect
  31          *
  32          * @return 0 on success, -ENOSYS if not implemented
  33          */
  34         int (*set_spi_protect)(struct udevice *dev, bool protect);
  35 };
  36
  37 #define pch_get_ops(dev)        ((struct pch_ops *)(dev)->driver->ops)
  38
  39 /**
  40  * pch_get_sbase() - get the address of SPI base
  41  *
  42  * @dev:        PCH device to check
  43  * @sbasep:     Returns address of SPI base if available, else 0
  44  * @return 0 if OK, -ve on error (e.g. there is no SPI base)
  45  */
  46 int pch_get_sbase(struct udevice *dev, ulong *sbasep);
  47
  48 /**
  49  * set_spi_protect() - set whether SPI flash is protected or not
  50  *
  51  * @dev:        PCH device to adjust
  52  * @protect:    true to protect, false to unprotect
  53  *
  54  * @return 0 on success, -ENOSYS if not implemented
  55  */
  56 int pch_set_spi_protect(struct udevice *dev, bool protect);
  57
  58 #endif