src: Report word-sized access for PM1a_EVT
According to the ACPI specification, version 6.3:
Accesses to the PM1 status registers are done through byte or word
accesses.
The same is said about the PM1 Enable registers. Therefore, reporting
dword-sized access is wrong and means nothing anyway. Since some other
platforms use word-sized access, use word everywhere for consistency.
Tested on Asus P8Z77-V LX2 with Linux 5.7.6 and Windows 10 at the end of
the patch train, both operating systems are able to boot successfully.
Change-Id: I6f85c9a4126f37ab2a193c3ab50a6c8e62cf6515
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/43432
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/southbridge/intel/i82371eb/fadt.c b/src/southbridge/intel/i82371eb/fadt.c
index 05581f4..c302acc 100644
--- a/src/southbridge/intel/i82371eb/fadt.c
+++ b/src/southbridge/intel/i82371eb/fadt.c
@@ -106,7 +106,7 @@
fadt->x_pm1a_evt_blk.space_id = 1;
fadt->x_pm1a_evt_blk.bit_width = fadt->pm1_evt_len * 8;
fadt->x_pm1a_evt_blk.bit_offset = 0;
- fadt->x_pm1a_evt_blk.access_size = ACPI_ACCESS_SIZE_DWORD_ACCESS;
+ fadt->x_pm1a_evt_blk.access_size = ACPI_ACCESS_SIZE_WORD_ACCESS;
fadt->x_pm1a_evt_blk.addrl = fadt->pm1a_evt_blk;
fadt->x_pm1a_evt_blk.addrh = 0x0;