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Add legacy free setting and override to fadt.c 

The FADT iapc_boot_arch indicates the available information
for accessing legacy devices. By default, the setting supports
legacy. LEGACY_FREE and/or the iapc_boot_arch field may be
customized.

Change-Id: I5679741e1f8db923d3c00b57f6a5d813550f3a5e
Signed-off-by: Marc Jones <marc.jones@se-eng.com>
Reviewed-on: http://review.coreboot.org/1024
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-by: Peter Stuge <peter@stuge.se>
This commit is contained in:
Marc Jones 2012-05-10 11:02:32 -06:00 committed by Peter Stuge
parent b547c4fc99
commit 7c9ef4f52c
1 changed files with 8 additions and 1 deletions
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9
src/southbridge/amd/cimx/sb800/fadt.c
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@ -30,6 +30,13 @@
#include <device/device.h>
#include "SBPLATFORM.h"
#ifndef FADT_BOOT_ARCH
#if LEGACY_FREE
#define FADT_BOOT_ARCH (ACPI_FADT_LEGACY_DEVICES | ACPI_FADT_8042)
#else
#define FADT_BOOT_ARCH ACPI_FADT_LEGACY_FREE
#endif
#endif
/*
* Reference section 5.2.9 Fixed ACPI Description Table (FADT)
@ -115,7 +122,7 @@ void acpi_create_fadt(acpi_fadt_t * fadt, acpi_facs_t * facs, void *dsdt)
fadt->day_alrm = 0; /* 0x7d these have to be */
fadt->mon_alrm = 0; /* 0x7e added to cmos.layout */
fadt->century = 0; /* 0x7f to make rtc alrm work */
fadt->iapc_boot_arch = ACPI_FADT_LEGACY_FREE; /* See table 5-10 */
fadt->iapc_boot_arch = FADT_BOOT_ARCH; /* See table 5-10 */
fadt->res2 = 0; /* reserved, MUST be 0 ACPI 3.0 */
fadt->flags = ACPI_FADT_WBINVD | /* See table 5-10 ACPI 3.0a spec */
ACPI_FADT_C1_SUPPORTED |