coreboot-kgpe-d16/src/mainboard/google/nyan_big/boardid.c
Julius Werner e2f17f782f boardid: Minor clean up and standardization
Merge the different coreboot table strapping ID structures into one
because they're really just all the same, and I want to add more. Make
the signature of the board_id() function return a uint32_t because
that's also what goes in the coreboot table. Add a printk to the generic
code handling strapping IDs in ramstage so that not every individual
mainboard implementation needs its own print. (In turn, remove one such
print from fsp1_1 code because it's in the way of my next patch.)

Change-Id: Ib9563edf07b623a586a4dc168fe357564c5e68b5
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/22741
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2017-12-07 01:18:25 +00:00

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C

/*
* This file is part of the coreboot project.
*
* Copyright 2014 Google Inc.
*
* 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.
*/
#include <boardid.h>
#include <console/console.h>
#include <gpio.h>
#include <stdlib.h>
uint32_t board_id(void)
{
static int id = -1;
gpio_t gpio[] = {[3] = GPIO(X4), [2] = GPIO(X1), /* X4 is MSB */
[1] = GPIO(T1), [0] = GPIO(Q3),}; /* Q3 is LSB */
if (id < 0) {
id = gpio_base3_value(gpio, ARRAY_SIZE(gpio));
printk(BIOS_SPEW, "Board TRISTATE ID: %d.\n", id);
}
return id;
}