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ACPICA: Detect FACS in reduced hardware build

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According to Section 5.2.10 of ACPI Specification, FACS is optional
in reduced hardware model. Enable the detection for "Hardware-reduced
ACPI support only" build (CONFIG_ACPI_REDUCED_HARDWARE_ONLY=y) also.

Link: ee53ed6b54
Signed-off-by: Jiaqing Zhao <jiaqing.zhao@linux.intel.com>
Link: https://patch.msgid.link/20240827025821.2099068-2-jiaqing.zhao@linux.intel.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Jiaqing Zhao 2024-08-27 02:58:20 +00:00 committed by Rafael J. Wysocki
parent a524287448
commit 36b531aace
4 changed files with 13 additions and 20 deletions
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6
drivers/acpi/acpica/acglobal.h
View File

@ -29,11 +29,7 @@ ACPI_INIT_GLOBAL(u32, acpi_gbl_dsdt_index, ACPI_INVALID_TABLE_INDEX);
ACPI_INIT_GLOBAL(u32, acpi_gbl_facs_index, ACPI_INVALID_TABLE_INDEX);
ACPI_INIT_GLOBAL(u32, acpi_gbl_xfacs_index, ACPI_INVALID_TABLE_INDEX);
ACPI_INIT_GLOBAL(u32, acpi_gbl_fadt_index, ACPI_INVALID_TABLE_INDEX);
#if (!ACPI_REDUCED_HARDWARE)
ACPI_GLOBAL(struct acpi_table_facs *, acpi_gbl_FACS);
#endif /* !ACPI_REDUCED_HARDWARE */
ACPI_INIT_GLOBAL(struct acpi_table_facs *, acpi_gbl_FACS, NULL);
/* These addresses are calculated from the FADT Event Block addresses */

2
drivers/acpi/acpica/tbutils.c
View File

@ -18,7 +18,6 @@ ACPI_MODULE_NAME("tbutils")
static acpi_physical_address
acpi_tb_get_root_table_entry(u8 *table_entry, u32 table_entry_size);
#if (!ACPI_REDUCED_HARDWARE)
/*******************************************************************************
*
* FUNCTION: acpi_tb_initialize_facs
@ -56,7 +55,6 @@ acpi_status acpi_tb_initialize_facs(void)
return (AE_OK);
}
#endif /* !ACPI_REDUCED_HARDWARE */
/*******************************************************************************
*

24
drivers/acpi/acpica/utxfinit.c
View File

@ -120,6 +120,18 @@ acpi_status ACPI_INIT_FUNCTION acpi_enable_subsystem(u32 flags)
*/
acpi_gbl_early_initialization = FALSE;
/*
* Obtain a permanent mapping for the FACS. This is required for the
* Global Lock and the Firmware Waking Vector
*/
if (!(flags & ACPI_NO_FACS_INIT)) {
status = acpi_tb_initialize_facs();
if (ACPI_FAILURE(status)) {
ACPI_WARNING((AE_INFO, "Could not map the FACS table"));
return_ACPI_STATUS(status);
}
}
#if (!ACPI_REDUCED_HARDWARE)
/* Enable ACPI mode */
@ -137,18 +149,6 @@ acpi_status ACPI_INIT_FUNCTION acpi_enable_subsystem(u32 flags)
}
}
/*
* Obtain a permanent mapping for the FACS. This is required for the
* Global Lock and the Firmware Waking Vector
*/
if (!(flags & ACPI_NO_FACS_INIT)) {
status = acpi_tb_initialize_facs();
if (ACPI_FAILURE(status)) {
ACPI_WARNING((AE_INFO, "Could not map the FACS table"));
return_ACPI_STATUS(status);
}
}
/*
* Initialize ACPI Event handling (Fixed and General Purpose)
*

1
include/acpi/acconfig.h
View File

@ -67,7 +67,6 @@
* General Purpose Events (GPEs)
* Global Lock
* ACPI PM timer
* FACS table (Waking vectors and Global Lock)
*/
#ifndef ACPI_REDUCED_HARDWARE
#define ACPI_REDUCED_HARDWARE FALSE