7db16ddc88
Add functions to write ACPI SSDT code for entering and leaving the config mode. To be used by ACPI generators. Tested on Linux 5.2 using the Aspeed SSDT generator. Change-Id: I14b55b885f1c384536bafafed39ad399639868e4 Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/37639 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
250 lines
6.3 KiB
C
250 lines
6.3 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2013 Nico Huber <nico.h@gmx.de>
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* Copyright (C) 2017-2018 Eltan B.V.
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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 <arch/io.h>
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#include <device/device.h>
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#include <superio/conf_mode.h>
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#include <arch/acpigen.h>
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/* Common enter/exit implementations */
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void pnp_enter_conf_mode_55(struct device *dev)
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{
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outb(0x55, dev->path.pnp.port);
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}
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void pnp_enter_conf_mode_6767(struct device *dev)
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{
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outb(0x67, dev->path.pnp.port);
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outb(0x67, dev->path.pnp.port);
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}
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void pnp_enter_conf_mode_7777(struct device *dev)
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{
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outb(0x77, dev->path.pnp.port);
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outb(0x77, dev->path.pnp.port);
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}
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void pnp_enter_conf_mode_8787(struct device *dev)
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{
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outb(0x87, dev->path.pnp.port);
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outb(0x87, dev->path.pnp.port);
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}
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void pnp_enter_conf_mode_a0a0(struct device *dev)
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{
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outb(0xa0, dev->path.pnp.port);
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outb(0xa0, dev->path.pnp.port);
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}
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void pnp_enter_conf_mode_a5a5(struct device *dev)
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{
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outb(0xa5, dev->path.pnp.port);
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outb(0xa5, dev->path.pnp.port);
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}
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void pnp_exit_conf_mode_aa(struct device *dev)
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{
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outb(0xaa, dev->path.pnp.port);
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}
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void pnp_enter_conf_mode_870155aa(struct device *dev)
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{
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outb(0x87, dev->path.pnp.port);
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outb(0x01, dev->path.pnp.port);
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outb(0x55, dev->path.pnp.port);
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if (dev->path.pnp.port == 0x4e)
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outb(0xaa, dev->path.pnp.port);
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else
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outb(0x55, dev->path.pnp.port);
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}
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void pnp_exit_conf_mode_0202(struct device *dev)
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{
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pnp_write_config(dev, 0x02, (1 << 1));
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}
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/* Functions for ACPI */
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#if CONFIG(HAVE_ACPI_TABLES)
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static void pnp_ssdt_enter_conf_mode_55(struct device *dev, const char *idx, const char *data)
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{
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acpigen_write_store();
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acpigen_write_byte(0x55);
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acpigen_emit_namestring(idx);
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}
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static void pnp_ssdt_enter_conf_mode_6767(struct device *dev, const char *idx, const char *data)
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{
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acpigen_write_store();
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acpigen_write_byte(0x67);
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acpigen_emit_namestring(idx);
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acpigen_write_store();
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acpigen_write_byte(0x67);
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acpigen_emit_namestring(idx);
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}
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static void pnp_ssdt_enter_conf_mode_7777(struct device *dev, const char *idx, const char *data)
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{
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acpigen_write_store();
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acpigen_write_byte(0x77);
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acpigen_emit_namestring(idx);
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acpigen_write_store();
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acpigen_write_byte(0x77);
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acpigen_emit_namestring(idx);
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}
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static void pnp_ssdt_enter_conf_mode_8787(struct device *dev, const char *idx, const char *data)
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{
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acpigen_write_store();
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acpigen_write_byte(0x87);
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acpigen_emit_namestring(idx);
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acpigen_write_store();
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acpigen_write_byte(0x87);
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acpigen_emit_namestring(idx);
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}
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static void pnp_ssdt_enter_conf_mode_a0a0(struct device *dev, const char *idx, const char *data)
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{
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acpigen_write_store();
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acpigen_write_byte(0xa0);
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acpigen_emit_namestring(idx);
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acpigen_write_store();
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acpigen_write_byte(0xa0);
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acpigen_emit_namestring(idx);
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}
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static void pnp_ssdt_enter_conf_mode_a5a5(struct device *dev, const char *idx, const char *data)
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{
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acpigen_write_store();
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acpigen_write_byte(0xa5);
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acpigen_emit_namestring(idx);
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acpigen_write_store();
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acpigen_write_byte(0xa5);
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acpigen_emit_namestring(idx);
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}
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static void pnp_ssdt_enter_conf_mode_870155aa(struct device *dev,
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const char *idx, const char *data)
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{
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acpigen_write_store();
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acpigen_write_byte(0x87);
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acpigen_emit_namestring(idx);
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acpigen_write_store();
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acpigen_write_byte(0x01);
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acpigen_emit_namestring(idx);
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acpigen_write_store();
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acpigen_write_byte(0x55);
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acpigen_emit_namestring(idx);
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acpigen_write_store();
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if (dev->path.pnp.port == 0x4e)
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acpigen_write_byte(0xaa);
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else
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acpigen_write_byte(0x55);
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acpigen_emit_namestring(idx);
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}
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static void pnp_ssdt_exit_conf_mode_aa(struct device *dev, const char *idx, const char *data)
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{
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acpigen_write_store();
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acpigen_write_byte(0xaa);
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acpigen_emit_namestring(idx);
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}
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static void pnp_ssdt_exit_conf_mode_0202(struct device *dev, const char *idx, const char *data)
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{
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acpigen_write_store();
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acpigen_write_byte(0x02);
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acpigen_emit_namestring(idx);
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acpigen_write_store();
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acpigen_write_byte(0x02);
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acpigen_emit_namestring(data);
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}
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#endif
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const struct pnp_mode_ops pnp_conf_mode_55_aa = {
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.enter_conf_mode = pnp_enter_conf_mode_55,
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.exit_conf_mode = pnp_exit_conf_mode_aa,
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#if CONFIG(HAVE_ACPI_TABLES)
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.ssdt_enter_conf_mode = pnp_ssdt_enter_conf_mode_55,
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.ssdt_exit_conf_mode = pnp_ssdt_exit_conf_mode_aa,
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#endif
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};
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const struct pnp_mode_ops pnp_conf_mode_6767_aa = {
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.enter_conf_mode = pnp_enter_conf_mode_6767,
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.exit_conf_mode = pnp_exit_conf_mode_aa,
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#if CONFIG(HAVE_ACPI_TABLES)
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.ssdt_enter_conf_mode = pnp_ssdt_enter_conf_mode_6767,
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.ssdt_exit_conf_mode = pnp_ssdt_exit_conf_mode_aa,
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#endif
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};
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const struct pnp_mode_ops pnp_conf_mode_7777_aa = {
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.enter_conf_mode = pnp_enter_conf_mode_7777,
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.exit_conf_mode = pnp_exit_conf_mode_aa,
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#if CONFIG(HAVE_ACPI_TABLES)
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.ssdt_enter_conf_mode = pnp_ssdt_enter_conf_mode_7777,
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.ssdt_exit_conf_mode = pnp_ssdt_exit_conf_mode_aa,
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#endif
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};
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const struct pnp_mode_ops pnp_conf_mode_8787_aa = {
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.enter_conf_mode = pnp_enter_conf_mode_8787,
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.exit_conf_mode = pnp_exit_conf_mode_aa,
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#if CONFIG(HAVE_ACPI_TABLES)
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.ssdt_enter_conf_mode = pnp_ssdt_enter_conf_mode_8787,
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.ssdt_exit_conf_mode = pnp_ssdt_exit_conf_mode_aa,
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#endif
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};
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const struct pnp_mode_ops pnp_conf_mode_a0a0_aa = {
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.enter_conf_mode = pnp_enter_conf_mode_a0a0,
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.exit_conf_mode = pnp_exit_conf_mode_aa,
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#if CONFIG(HAVE_ACPI_TABLES)
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.ssdt_enter_conf_mode = pnp_ssdt_enter_conf_mode_a0a0,
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.ssdt_exit_conf_mode = pnp_ssdt_exit_conf_mode_aa,
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#endif
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};
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const struct pnp_mode_ops pnp_conf_mode_a5a5_aa = {
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.enter_conf_mode = pnp_enter_conf_mode_a5a5,
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.exit_conf_mode = pnp_exit_conf_mode_aa,
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#if CONFIG(HAVE_ACPI_TABLES)
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.ssdt_enter_conf_mode = pnp_ssdt_enter_conf_mode_a5a5,
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.ssdt_exit_conf_mode = pnp_ssdt_exit_conf_mode_aa,
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#endif
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};
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const struct pnp_mode_ops pnp_conf_mode_870155_aa = {
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.enter_conf_mode = pnp_enter_conf_mode_870155aa,
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.exit_conf_mode = pnp_exit_conf_mode_0202,
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#if CONFIG(HAVE_ACPI_TABLES)
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.ssdt_enter_conf_mode = pnp_ssdt_enter_conf_mode_870155aa,
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.ssdt_exit_conf_mode = pnp_ssdt_exit_conf_mode_0202,
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#endif
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};
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