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https://github.com/Dasharo/flashrom.git
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9ef8388d36
Change-Id: Id8e00d30b5ce8808838a99bbf3ff9f6d2a45cdc6 Signed-off-by: Michał Iwanicki <michal.iwanicki@3mdeb.com>
65 lines
1.5 KiB
C
65 lines
1.5 KiB
C
/*
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* This file is part of the flashrom project.
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*
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* Copyright (C) 2021, TUXEDO Computers GmbH
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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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#if defined(__i386__) || defined(__x86_64__)
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#include "programmer.h"
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#include "hwaccess_x86_io.h"
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/* Generic Super I/O helper functions */
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uint8_t sio_read(uint16_t port, uint8_t reg)
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{
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OUTB(reg, port);
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return INB(port + 1);
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}
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void sio_write(uint16_t port, uint8_t reg, uint8_t data)
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{
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OUTB(reg, port);
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OUTB(data, port + 1);
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}
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void sio_mask(uint16_t port, uint8_t reg, uint8_t data, uint8_t mask)
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{
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uint8_t tmp;
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OUTB(reg, port);
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tmp = INB(port + 1) & ~mask;
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OUTB(tmp | (data & mask), port + 1);
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}
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void sio_switch_ldn(uint16_t port, uint8_t ldn)
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{
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sio_write(port, 0x07, ldn);
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}
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uint16_t sio_get_iobase(uint16_t port, uint8_t io_bar_number)
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{
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return (sio_read(port, 0x60 + io_bar_number * 2) << 8) |
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sio_read(port, 0x61 + io_bar_number * 2);
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}
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uint16_t sio_read_id(uint16_t port, uint8_t io_bar_number)
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{
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return (sio_read(port, 0x20) << 8) | sio_read(port, 0x21);
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}
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bool sio_is_ldn_enabled(uint16_t port)
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{
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return (sio_read(port, 0x30) & 1) ? true : false;
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}
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#endif
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