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authorFurquan Shaikh <furquan@chromium.org>2017-06-09 17:57:59 -0700
committerFurquan Shaikh <furquan@google.com>2017-06-14 20:20:21 +0200
commitb2f423578ea93bb5f1e56084ba42f4c7b68c130c (patch)
tree0554cd69893a9418e96dde0733b05ffedf14827f /src/mainboard/google
parent268eea0e4158ab0186710cd8901d42d31df4b19c (diff)
downloadcoreboot-b2f423578ea93bb5f1e56084ba42f4c7b68c130c.tar.xz
mainboard/google/poppy: Disable unused TPM interface dynamically
Based on the config options selected, decide at runtime which TPM interface should be disabled so that ACPI tables are not generated for that interface. TEST=Verified that unused interface does not show up in ACPI tables. Change-Id: Iee8f49e484ed024c549f60c88d874c08873b75cb Signed-off-by: Furquan Shaikh <furquan@chromium.org> Reviewed-on: https://review.coreboot.org/20141 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Philippe Mathieu-Daudé <philippe.mathieu.daude@gmail.com>
Diffstat (limited to 'src/mainboard/google')
-rw-r--r--src/mainboard/google/poppy/mainboard.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/src/mainboard/google/poppy/mainboard.c b/src/mainboard/google/poppy/mainboard.c
index 3ee01467cd..3558ce0c92 100644
--- a/src/mainboard/google/poppy/mainboard.c
+++ b/src/mainboard/google/poppy/mainboard.c
@@ -17,6 +17,7 @@
#include <baseboard/variants.h>
#include <device/device.h>
#include <ec/ec.h>
+#include <soc/pci_devs.h>
#include <soc/nhlt.h>
#include <vendorcode/google/chromeos/chromeos.h>
@@ -56,9 +57,24 @@ static unsigned long mainboard_write_acpi_tables(device_t device,
static void mainboard_enable(device_t dev)
{
+ device_t tpm;
+
dev->ops->init = mainboard_init;
dev->ops->acpi_inject_dsdt_generator = chromeos_dsdt_generator;
dev->ops->write_acpi_tables = mainboard_write_acpi_tables;
+
+ /* Disable unused interface(s) for TPM. */
+ if (!IS_ENABLED(CONFIG_POPPY_USE_SPI_TPM)) {
+ tpm = PCH_DEV_GSPI0;
+ if (tpm)
+ tpm->enabled = 0;
+ }
+
+ if (!IS_ENABLED(CONFIG_POPPY_USE_I2C_TPM)) {
+ tpm = PCH_DEV_I2C1;
+ if (tpm)
+ tpm->enabled = 0;
+ }
}
struct chip_operations mainboard_ops = {