GNUBoot
/
coreboot-kgpe-d16
2
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

arch/x86/acpigen_dsm: Add support for DSM types 

Currently, the only supported DSM type is I2C
HID(3CDFF6F7-4267-4555-AD05-B30A3D8938DE). This provides the required
callbacks for generating ACPI AML codes for different function
identifiers for I2C HID.

BUG=chrome-os-partner:57846

Change-Id: Ia403e11f7ce4824956e3c879547ec927478db7b1
Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://review.coreboot.org/17091
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
This commit is contained in:
Furquan Shaikh 2016-10-21 16:40:17 -07:00 committed by Furquan Shaikh
parent c00bd18b13
commit 4a2cfad13b
3 changed files with 93 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
src/arch/x86/Makefile.inc
View File

@ -313,6 +313,7 @@ ifeq ($(CONFIG_ARCH_RAMSTAGE_X86_32)$(CONFIG_ARCH_RAMSTAGE_X86_64),y)
ramstage-$(CONFIG_HAVE_ACPI_TABLES) += acpi.c
ramstage-$(CONFIG_HAVE_ACPI_TABLES) += acpigen.c
ramstage-$(CONFIG_HAVE_ACPI_TABLES) += acpigen_dsm.c
ramstage-$(CONFIG_HAVE_ACPI_TABLES) += acpi_device.c
ramstage-$(CONFIG_HAVE_ACPI_RESUME) += acpi_s3.c
ramstage-y += boot.c

65
src/arch/x86/acpigen_dsm.c Normal file
View File

@ -0,0 +1,65 @@
/*
* This file is part of the coreboot project.
*
* Copyright 2016 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 <arch/acpigen.h>
#include <arch/acpigen_dsm.h>
#include <stdlib.h>
/* ------------------- I2C HID DSM ---------------------------- */
#define ACPI_DSM_I2C_HID_UUID "3CDFF6F7-4267-4555-AD05-B30A3D8938DE"
static void i2c_hid_func0_cb(void *arg)
{
/* ToInteger (Arg1, Local2) */
acpigen_write_to_integer(ARG1_OP, LOCAL2_OP);
/* If (LEqual (Local2, 0x0)) */
acpigen_write_if_lequal(LOCAL2_OP, 0x0);
/* Return (Buffer (One) { 0x1f }) */
acpigen_write_return_singleton_buffer(0x1f);
acpigen_pop_len(); /* Pop : If */
/* Else */
acpigen_write_else();
/* If (LEqual (Local2, 0x1)) */
acpigen_write_if_lequal(LOCAL2_OP, 0x1);
/* Return (Buffer (One) { 0x3f }) */
acpigen_write_return_singleton_buffer(0x3f);
acpigen_pop_len(); /* Pop : If */
/* Else */
acpigen_write_else();
/* Return (Buffer (One) { 0x0 }) */
acpigen_write_return_singleton_buffer(0x0);
acpigen_pop_len(); /* Pop : Else */
acpigen_pop_len(); /* Pop : Else */
}
static void i2c_hid_func1_cb(void *arg)
{
struct dsm_i2c_hid_config *config = arg;
acpigen_write_return_byte(config->hid_desc_reg_offset);
}
static void (*i2c_hid_callbacks[2])(void *) = {
i2c_hid_func0_cb,
i2c_hid_func1_cb,
};
void acpigen_write_dsm_i2c_hid(struct dsm_i2c_hid_config *config)
{
acpigen_write_dsm(ACPI_DSM_I2C_HID_UUID, i2c_hid_callbacks,
ARRAY_SIZE(i2c_hid_callbacks), config);
}
/* ------------------- End: I2C HID DSM ------------------------- */

27
src/arch/x86/include/arch/acpigen_dsm.h Normal file
View File

@ -0,0 +1,27 @@
/*
* This file is part of the coreboot project.
*
* Copyright 2016 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.
*/
#ifndef __ARCH_ACPIGEN_DSM_H__
#define __ARCH_ACPIGEN_DSM_H__
#include <stdint.h>
struct dsm_i2c_hid_config {
uint8_t hid_desc_reg_offset;
};
void acpigen_write_dsm_i2c_hid(struct dsm_i2c_hid_config *config);
#endif /* __ARCH_ACPIGEN_DSM_H__ */