573e21132f
nyan blaze fails to boot because tristates of the board id are interpreted in the reverse order. this change fixes it. BUG=none TEST=Booted Blaze to Linux. Built firmware for Storm. Branch=none Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org> Change-Id: I4ff8a15cf62869cea22931b5255c3a408a778ed2 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: 3f59b13d615a8985edf2029d89af05e95aefad33 Original-Change-Id: I6d81092becb60d12e1cd2a92fc2c261da42c60f5 Original-Reviewed-on: https://chromium-review.googlesource.com/211700 Original-Reviewed-by: Vadim Bendebury <vbendeb@chromium.org> Original-Tested-by: Daisuke Nojiri <dnojiri@chromium.org> Original-Reviewed-by: David Hendricks <dhendrix@chromium.org> Original-Reviewed-by: Julius Werner <jwerner@chromium.org> Original-Commit-Queue: Daisuke Nojiri <dnojiri@chromium.org> Reviewed-on: http://review.coreboot.org/8980 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
51 lines
1.9 KiB
C
51 lines
1.9 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright 2014 Google Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef __SRC_INCLUDE_GPIOLIB_H__
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#define __SRC_INCLUDE_GPIOLIB_H__
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/* A generic type, use accessor macros to actually access the hardware. */
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typedef unsigned gpio_t;
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/*
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* Read the value presented by the set of GPIOs, when each pin is interpreted
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* as a number in 0..2 range depending on the external pullup situation.
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*
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* Depending on the third parameter, the return value is either a set of two
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* bit fields, each representing one GPIO value, or a number where each GPIO is
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* included multiplied by 3^gpio_num, resulting in a true tertiary value.
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*
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* gpio[]: pin positions to read. little-endian (less significant value first).
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* num_gpio: number of pins to read.
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* tertiary: 1: pins are interpreted as a quad coded tertiary.
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* 0: pins are interpreted as a set of two bit fields.
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*/
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int gpio_get_in_tristate_values(gpio_t gpio[], int num_gpio, int tertiary);
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/*
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* The following functions are not provided by the common library, but must be
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* implemented by the appropriate SOC/board instead.
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*/
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int gpio_get_in_value(gpio_t gpio);
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void gpio_set_out_value(gpio_t gpio, int value);
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void gpio_input_pulldown(gpio_t gpio);
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void gpio_input_pullup(gpio_t gpio);
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void gpio_input(gpio_t gpio);
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#endif
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