d1a00515ff
EVT1 has two board IDs. Use binary first mode of base3 encoding for board ID. BUG=chrome-os-partner:55320 TEST=None. BRANCH=None Change-Id: I1cac1f74207f42616111d39db5c0494b7d1a0fb2 Signed-off-by: Martin Roth <martinroth@chromium.org> Original-Commit-Id: 2b16cc74c4c147315b7db345678bbaf536ab4a7b Original-Change-Id: I6e95c7be4a6d28a0aae38b0838bd2ab71d288ba1 Original-Signed-off-by: Kan Yan <kyan@google.com> Original-Reviewed-on: https://chromium-review.googlesource.com/364623 Original-Reviewed-by: David Hendricks <dhendrix@chromium.org> Original-Reviewed-by: Suresh Rajashekara <sureshraj@chromium.org> Reviewed-on: https://review.coreboot.org/16030 Reviewed-by: Patrick Georgi <pgeorgi@google.com> Tested-by: build bot (Jenkins)
46 lines
1.1 KiB
C
46 lines
1.1 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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#include <boardid.h>
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#include <gpio.h>
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#include <console/console.h>
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#include <stdlib.h>
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/*
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* Gale boards dedicate to the board ID three GPIOs in ternary mode: 64, 65
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* and 66.
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*/
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static int board_id_value = -1;
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static uint8_t get_board_id(void)
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{
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uint8_t bid;
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gpio_t hw_rev_gpios[] = {[2] = 66, [1] = 65, [0] = 64}; /* 64 is LSB */
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bid = gpio_binary_first_base3_value(hw_rev_gpios,
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ARRAY_SIZE(hw_rev_gpios));
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printk(BIOS_INFO, "Board ID %d\n", bid);
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return bid;
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}
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uint8_t board_id(void)
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{
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if (board_id_value < 0)
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board_id_value = get_board_id();
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return board_id_value;
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}
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