diff options
Diffstat (limited to 'src/southbridge/intel/common/gpio.h')
| -rw-r--r-- | src/southbridge/intel/common/gpio.h | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/src/southbridge/intel/common/gpio.h b/src/southbridge/intel/common/gpio.h new file mode 100644 index 0000000000..7b42b0680f --- /dev/null +++ b/src/southbridge/intel/common/gpio.h @@ -0,0 +1,188 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2011-2016 The Chromium OS Authors. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef INTEL_COMMON_GPIO_H +#define INTEL_COMMON_GPIO_H + +#include <stdint.h> + +/* LPC GPIO Base Address Register */ +#define GPIO_BASE 0x48 +/* PCI Configuration Space (D31:F0): LPC */ +#define PCH_LPC_DEV PCI_DEV(0, 0x1f, 0) + +/* ICH7 GPIOBASE */ +#define GPIO_USE_SEL 0x00 +#define GP_IO_SEL 0x04 +#define GP_LVL 0x0c +#define GPO_BLINK 0x18 +#define GPI_INV 0x2c +#define GPIO_USE_SEL2 0x30 +#define GP_IO_SEL2 0x34 +#define GP_LVL2 0x38 +#define GPIO_USE_SEL3 0x40 +#define GP_IO_SEL3 0x44 +#define GP_LVL3 0x48 +#define GP_RST_SEL1 0x60 +#define GP_RST_SEL2 0x64 +#define GP_RST_SEL3 0x68 + +#define GPIO_MODE_NATIVE 0 +#define GPIO_MODE_GPIO 1 +#define GPIO_MODE_NONE 1 + +#define GPIO_DIR_OUTPUT 0 +#define GPIO_DIR_INPUT 1 + +#define GPIO_NO_INVERT 0 +#define GPIO_INVERT 1 + +#define GPIO_LEVEL_LOW 0 +#define GPIO_LEVEL_HIGH 1 + +#define GPIO_NO_BLINK 0 +#define GPIO_BLINK 1 + +#define GPIO_RESET_PWROK 0 +#define GPIO_RESET_RSMRST 1 + +struct pch_gpio_set1 { + u32 gpio0 : 1; + u32 gpio1 : 1; + u32 gpio2 : 1; + u32 gpio3 : 1; + u32 gpio4 : 1; + u32 gpio5 : 1; + u32 gpio6 : 1; + u32 gpio7 : 1; + u32 gpio8 : 1; + u32 gpio9 : 1; + u32 gpio10 : 1; + u32 gpio11 : 1; + u32 gpio12 : 1; + u32 gpio13 : 1; + u32 gpio14 : 1; + u32 gpio15 : 1; + u32 gpio16 : 1; + u32 gpio17 : 1; + u32 gpio18 : 1; + u32 gpio19 : 1; + u32 gpio20 : 1; + u32 gpio21 : 1; + u32 gpio22 : 1; + u32 gpio23 : 1; + u32 gpio24 : 1; + u32 gpio25 : 1; + u32 gpio26 : 1; + u32 gpio27 : 1; + u32 gpio28 : 1; + u32 gpio29 : 1; + u32 gpio30 : 1; + u32 gpio31 : 1; +} __attribute__ ((packed)); + +struct pch_gpio_set2 { + u32 gpio32 : 1; + u32 gpio33 : 1; + u32 gpio34 : 1; + u32 gpio35 : 1; + u32 gpio36 : 1; + u32 gpio37 : 1; + u32 gpio38 : 1; + u32 gpio39 : 1; + u32 gpio40 : 1; + u32 gpio41 : 1; + u32 gpio42 : 1; + u32 gpio43 : 1; + u32 gpio44 : 1; + u32 gpio45 : 1; + u32 gpio46 : 1; + u32 gpio47 : 1; + u32 gpio48 : 1; + u32 gpio49 : 1; + u32 gpio50 : 1; + u32 gpio51 : 1; + u32 gpio52 : 1; + u32 gpio53 : 1; + u32 gpio54 : 1; + u32 gpio55 : 1; + u32 gpio56 : 1; + u32 gpio57 : 1; + u32 gpio58 : 1; + u32 gpio59 : 1; + u32 gpio60 : 1; + u32 gpio61 : 1; + u32 gpio62 : 1; + u32 gpio63 : 1; +} __attribute__ ((packed)); + +struct pch_gpio_set3 { + u32 gpio64 : 1; + u32 gpio65 : 1; + u32 gpio66 : 1; + u32 gpio67 : 1; + u32 gpio68 : 1; + u32 gpio69 : 1; + u32 gpio70 : 1; + u32 gpio71 : 1; + u32 gpio72 : 1; + u32 gpio73 : 1; + u32 gpio74 : 1; + u32 gpio75 : 1; +} __attribute__ ((packed)); + +struct pch_gpio_map { + struct { + const struct pch_gpio_set1 *mode; + const struct pch_gpio_set1 *direction; + const struct pch_gpio_set1 *level; + const struct pch_gpio_set1 *reset; + const struct pch_gpio_set1 *invert; + const struct pch_gpio_set1 *blink; + } set1; + struct { + const struct pch_gpio_set2 *mode; + const struct pch_gpio_set2 *direction; + const struct pch_gpio_set2 *level; + const struct pch_gpio_set2 *reset; + } set2; + struct { + const struct pch_gpio_set3 *mode; + const struct pch_gpio_set3 *direction; + const struct pch_gpio_set3 *level; + const struct pch_gpio_set3 *reset; + } set3; +}; + +extern const struct pch_gpio_map mainboard_gpio_map; + +/* Configure GPIOs with mainboard provided settings */ +void setup_pch_gpios(const struct pch_gpio_map *gpio); + +/* get GPIO pin value */ +int get_gpio(int gpio_num); +/* + * get a number comprised of multiple GPIO values. gpio_num_array points to + * the array of gpio pin numbers to scan, terminated by -1. + */ +unsigned get_gpios(const int *gpio_num_array); + +void set_gpio(int gpio_num, int value); + +void clear_gpio(int gpio_num); + +int gpio_is_native(int gpio_num); + +#endif |