3b42119237
Datasheet https://www.exar.com/content/document.ashx?id=21368 Add support for Exar chip used on a custom board that was designed to connect to the Olive Hill Plus development platform. The register dump was verified on the Olive Hill Plus platform. Change-Id: Ibd3e13eefb706bd99b6e5b38634f6855b39848ab Signed-off-by: Derek Waldner <derek.waldner.os@gmail.com> Reviewed-on: https://review.coreboot.org/14367 Tested-by: build bot (Jenkins) Reviewed-by: Martin Roth <martinroth@google.com>
98 lines
2.6 KiB
C
98 lines
2.6 KiB
C
/*
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* This file is part of the superiotool project.
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*
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* Copyright (C) 2016 Derek Waldner
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* Copyright (C) 2016 Sencore Inc <opensource@sencore.com>
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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; either version 2 of the License, or
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* (at your option) any later version.
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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 "superiotool.h"
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#define DEVICE_ID_BYTE1_REG 0x20
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#define DEVICE_ID_BYTE2_REG 0x21
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#define VENDOR_ID_BYTE1_REG 0x23
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#define VENDOR_ID_BYTE2_REG 0x24
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#define EXAR_VENDOR_ID 0xa813
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static const struct superio_registers reg_table[] = {
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{0x8403, "XR28V384", {
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/* We assume reserved bits are read as 0. */
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{NOLDN, NULL,
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{0x02,0x07,0x20,0x21,0x23,0x24,0x25,0x26,0x27,EOT},
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{0x00,0x00,0x03,0x84,0x13,0xa8,0x00,0x00,0x00,EOT}},
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{0x0, "COM1",
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{0x30,0x60,0x61,0x70,0xf0,0xf1,0xf4,0xf5,0xf6,EOT},
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{0x01,0x03,0xf8,0x03,0x00,0x44,0x00,0x00,0x00,EOT}},
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{0x1, "COM2",
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{0x30,0x60,0x61,0x70,0xf0,0xf4,0xf5,0xf6,EOT},
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{0x01,0x02,0xf8,0x04,0x00,0x00,0x00,0x00,EOT}},
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{0x2, "COM3",
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{0x30,0x60,0x61,0x70,0xf0,0xf4,0xf5,0xf6,EOT},
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{0x01,0x03,0xe8,0x05,0x00,0x00,0x00,0x00,EOT}},
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{0x3, "COM4",
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{0x30,0x60,0x61,0x70,0xf0,0xf4,0xf5,0xf6,EOT},
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{0x01,0x02,0xe8,0x09,0x00,0x00,0x00,0x00,EOT}},
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{0x8, "WDT",
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{0x30,0x60,0x61,0x70,0xf0,0xf1,EOT},
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{0x01,0x04,0x42,0x00,0x02,0x0a,EOT}},
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{EOT}}},
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{EOT}
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};
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void enter_conf_mode_exar(uint16_t port)
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{
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OUTB(0x67, port);
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OUTB(0x67, port);
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}
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void exit_conf_mode_exar(uint16_t port)
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{
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OUTB(0xaa, port);
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}
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void probe_idregs_exar(uint16_t port)
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{
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uint16_t vid, did;
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probing_for("Exar", "", port);
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enter_conf_mode_exar(port);
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did = regval(port, DEVICE_ID_BYTE1_REG);
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did |= (regval(port, DEVICE_ID_BYTE2_REG) << 8);
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vid = regval(port, VENDOR_ID_BYTE1_REG);
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vid |= (regval(port, VENDOR_ID_BYTE2_REG) << 8);
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if (vid != EXAR_VENDOR_ID || superio_unknown(reg_table, did)) {
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if (verbose)
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printf(NOTFOUND "vid=0x%04x, id=0x%04x\n", vid, did);
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exit_conf_mode_exar(port);
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return;
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}
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printf("Found Exar %s (vid=0x%04x, id=0x%04x) at 0x%x\n",
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get_superio_name(reg_table, did), vid, did, port);
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chip_found = 1;
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dump_superio("Exar", reg_table, port, did, LDN_SEL);
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exit_conf_mode_exar(port);
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}
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void print_exar_chips(void)
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{
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print_vendor_chips("Exar", reg_table);
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}
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