baytrail: fix uninitialized acpi structures

The callers of the following functions assume the storage
area provided by the pointers is initialized. That's not the
case as these were just place holders.
- void acpi_create_intel_hpet(acpi_hpet_t * hpet);
- void acpi_create_serialio_ssdt(acpi_header_t *ssdt);

To fix this properly initialize the hpet entry, and just remove
the serialio_ssdt function entirely.

BUG=chrome-os-partner:23505
BRANCH=None
TEST=Built and booted through depthcharge on rambi. Noted no more
     ACPI errors relating to invalid length.

Change-Id: If56ab033562ef2d755e9c9de42f507c95d291aba
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/174716
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/4917
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>

1 files changed, 0 insertions, 7 deletions

diff --git a/src/mainboard/google/rambi/acpi_tables.c b/src/mainboard/google/rambi/acpi_tables.c
index 3723021284..0b9622807a 100644
--- a/src/mainboard/google/rambi/acpi_tables.c
+++ b/src/mainboard/google/rambi/acpi_tables.c
@@ -274,13 +274,6 @@ unsigned long write_acpi_tables(unsigned long start)
 	acpi_add_table(rsdp, ssdt);
 	ALIGN_CURRENT;
 
-	printk(BIOS_DEBUG, "ACPI:     * SSDT2\n");
-	ssdt = (acpi_header_t *)current;
-	acpi_create_serialio_ssdt(ssdt);
-	current += ssdt->length;
-	acpi_add_table(rsdp, ssdt);
-	ALIGN_CURRENT;
-
 	printk(BIOS_DEBUG, "current = %lx\n", current);
 	printk(BIOS_INFO, "ACPI: done.\n");
 	return current;