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_spi_base() - 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_spi_base)(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 * get_gpio_base() - get the address of GPIO base 38 * 39 * @dev: PCH device to check 40 * @gbasep: Returns address of GPIO base if available, else 0 41 * @return 0 if OK, -ve on error (e.g. there is no GPIO base) 42 */ 43 int (*get_gpio_base)(struct udevice *dev, u32 *gbasep); 44 45 /** 46 * get_io_base() - get the address of IO base 47 * 48 * @dev: PCH device to check 49 * @iobasep: Returns address of IO base if available, else 0 50 * @return 0 if OK, -ve on error (e.g. there is no IO base) 51 */ 52 int (*get_io_base)(struct udevice *dev, u32 *iobasep); 53 }; 54 55 #define pch_get_ops(dev) ((struct pch_ops *)(dev)->driver->ops) 56 57 /** 58 * pch_get_spi_base() - get the address of SPI base 59 * 60 * @dev: PCH device to check 61 * @sbasep: Returns address of SPI base if available, else 0 62 * @return 0 if OK, -ve on error (e.g. there is no SPI base) 63 */ 64 int pch_get_spi_base(struct udevice *dev, ulong *sbasep); 65 66 /** 67 * set_spi_protect() - set whether SPI flash is protected or not 68 * 69 * @dev: PCH device to adjust 70 * @protect: true to protect, false to unprotect 71 * 72 * @return 0 on success, -ENOSYS if not implemented 73 */ 74 int pch_set_spi_protect(struct udevice *dev, bool protect); 75 76 /** 77 * pch_get_gpio_base() - get the address of GPIO base 78 * 79 * @dev: PCH device to check 80 * @gbasep: Returns address of GPIO base if available, else 0 81 * @return 0 if OK, -ve on error (e.g. there is no GPIO base) 82 */ 83 int pch_get_gpio_base(struct udevice *dev, u32 *gbasep); 84 85 /** 86 * pch_get_io_base() - get the address of IO base 87 * 88 * @dev: PCH device to check 89 * @iobasep: Returns address of IO base if available, else 0 90 * @return 0 if OK, -ve on error (e.g. there is no IO base) 91 */ 92 int pch_get_io_base(struct udevice *dev, u32 *iobasep); 93 94 #endif 95