x86: edison: Bring minimal ACPI support to the board

This board is based on Intel Tangier SoC (Intel Merrifield platform)
and may utilize ACPI powerfulness.

Bring minimum support by appending initial DSDT table for it.

Note, the addresses for generated tables are carefully chosen to avoid
any conflicts with existing shadowed BIOS data. The user have somewhat
like ~31 kB available for compiled ACPI tables that ought to be enough.

Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
This commit is contained in:
Andy Shevchenko 2017-10-03 14:55:08 +03:00 committed by Bin Meng
parent 39665beed6
commit 256df1e1c6
5 changed files with 26 additions and 0 deletions

3
board/intel/edison/.gitignore vendored Normal file
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@ -0,0 +1,3 @@
dsdt.aml
dsdt.asl.tmp
dsdt.c

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@ -15,6 +15,12 @@ config SYS_CONFIG_NAME
config SYS_TEXT_BASE
default 0x01101000
config ROM_TABLE_ADDR
default 0x0e4500
config ROM_TABLE_SIZE
default 0x007b00
config BOARD_SPECIFIC_OPTIONS # dummy
def_bool y
select X86_LOAD_FROM_32_BIT

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@ -5,3 +5,4 @@
#
obj-y += start.o edison.o
obj-$(CONFIG_GENERATE_ACPI_TABLE) += dsdt.o

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@ -0,0 +1,13 @@
/*
* Copyright (c) 2017 Intel Corporation
*
* Partially based on dsdt.asl for other x86 boards
*
* SPDX-License-Identifier: GPL-2.0+
*/
DefinitionBlock("dsdt.aml", "DSDT", 2, "U-BOOT", "U-BOOTBL", 0x00010000)
{
/* platform specific */
#include <asm/arch/acpi/platform.asl>
}

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@ -9,6 +9,9 @@
#include <asm/ibmpc.h>
/* ACPI */
#define CONFIG_LAST_STAGE_INIT
/* Boot */
#define CONFIG_BOOTCOMMAND "run bootcmd"